The 1st International theoretical and practical online-conference «Application of nanotechnologies in construction industry»


Scientific Internet-journal «Nanotechnologies in construction» (www.nanobuild.ru) together with Internet-portal NanoNewsNet (www.nanonewsnet.ru) held the 1st International theoretical and practical online-conference «Application of nanotechnologies in construction industry». Russian leading scientists and specialists of Russian Academy of Engineering, Russian Academy of Architecture and Construction Sciences, Russian corporation on nanotechnologies, Moscow State University of Civil Engineering, Perm State Technical University, Samara State University of Architecture and Engineering, Rostov State Construction University, Voronezh State University of Architecture and Civil Engineering, Scientific and technical center of «Applied nanotechnologies» (Saint Petersburg), International Academy of Engineering, International union of experts and laboratories on testing of construction materials, systems and structures (RILEM), company «Optim Consult» (Guangzhou, The People's Republic of China), Research center «Nanoscience and nanotechnology» of National Autonomous University of Mexico, Belorussia State Agricultural Technical University and others participated in this event.
The 1st International theoretical and practical online-conference «Application of nanotechnologies in construction industry» was carried out in the following way. Organizers launched online-conference. The visitors of the web sites (www.nanonewsnet.ru and www.nanobuild.ru) could ask participants questions directly at the web site www.nanonewsnet.ru and also by email (info@nanobuild.ru and empirv@mail.ru). Organizing committee had summarized and sent the questions to participants to answer.

Participants:


Gusev.jpg GUSEV Boris Vladimirovich, co-chairman of conference committee, president of Russian and International Academies of Engineering, corresponding member of RAS, expert of SC «Rosnanotech», Doctor of engineering, professor
Telichenko.jpg TELICHENKO Valerij Ivanovich, co-chairman of conference committee, rector of MSUCE, Acad RAASN, Doctor of Engineering, professor

Kolesov.jpg KOLESOV E., the director general of the company «Optim Consult» (Guangzhou, The People's Republic of China)
POnomarev.jpg PONOMAREV A.N., director general of Scientific and technological center of «Applied nanotechnologies», Ph.D. in engineering, professor, full member of International AS of Ecology, professor of Technology, Organisation and Economy of Construction Department of Saint Petersburg State Polytechnical University, member of Central administration of Nanotechnological Society of Russia

Foto_Korenkova_S.F..jpg KOREN’KOVA S.F., Doctor of engineering, professor of Construction materials Department of Samara State University of Architecture and Engineering
new_0.jpg KALIUZHNIY S.V., Director of Scientific and technical commission of experts, board member of SC «Rosnanotech», Doctor of Chemistry, Professor

KETOV A.A., Doctor of engineering, professor, Perm State Technical University
FALIKMAN V.R., full-member of REA, professor of MSUCE, member of International union of experts and laboratories on testing of constructional materials, systems and structures (RILEM)

KOROTKIKH D.N., Ph. D. in Engineering, Assoc. Prof. of Building Products and Structures Technology Department, Voronezh State University of Architecture and Civil Engineering

— This conference was closed at 20-12-2009
#1

What kinds of building materials are likely to be nanostructured?

Y.V. Sidorenko, Ph.D. in engineering, assistant professor of Construction Materials Department of Samara SU of Architecture and Engineering — 18.12.2009 16:38

Boris Vladimirovich GUSEV, 18.12.2009 17:32:

It is desirable to nanostructure mass application materials such as concrete, metal, composite materials on the basis of fibres (carbonic, aramid, basalt and other). Although now it is difficult, but this problem has to be developed.
Today the most effective direction is accumulation of knowledge and experience in obtaining nanodispersed emulsions and suspensions. This will allow to develop the principles of nanodispersion in order to obtain nanodispersed coatings and homogeneous noncreaming emulsions which could become initial component for lacquers, paints and a wide variety of protective materials (fire-proofing, radiation-proofing, etc.).

#2

What kinds of nanotechnologies according to your opinion can be used to produce constructional materials?

Eugene — 18.12.2009 16:40

Boris Vladimirovich GUSEV, 18.12.2009 17:33:

Vacuum, laser, cryogenic technologies can be used but they are expensive especially if we consider the need to employ cheap products for mass construction.
At the moment it is of great importance to focus on chemical processes of «ash-gel» type and technologies using mechanical principles and microexplosion methods.

S.F. KOREN’KOVA, 18.12.2009 17:50:

The development of nanotechnologies is accompanied by the creation of theoretical and practical bases and their implementation into materials. I consider that the most real field is application of nanomodifiers in concrete compositions, ceramic and silicate materials, as some scientific experience has been already kept in this field.

#3

What concrete strength characteristics can be obtained due to nanotechnologies?

N.I. Pashintsev — 18.12.2009 16:45

Boris Vladimirovich GUSEV, 18.12.2009 17:33:

I think that in the nearest 5 years the strength of approximately 300 MPa can be achieved. This is nearly 10 times more then average strength of structural concretes. As for durability, frost resistance characteristics are supposed to be more then 300 freezing and melting cycles. These types of concrete with minimal porosity even in sea water could serve more then 100 years.

#4

What should be changed in educational process to implement nanotechnologies in construction industry successfully?

S. Puzanov, post-graduate student of Perm State Technical University — 18.12.2009 16:46

V.I. TELICHENKO, 18.12.2009 17:38:

The main condition providing the successful implementation of nanotechnologies in construction industry is modernization of educational process in construction sphere. The application of nanotechnologies in building production demands for highly skilled personnel. Interdisciplinary characteristic of nanotechnologies and their rapid development determine new approaches to the education and first of all assume its continuous availability which, taking into consideration Russian vast territory is impossible to be accomplished without foundation of open network of distance educational technologies.
New approaches require also new educational standards, educational programmes and techniques primarily aimed at system interdisciplinary approach development. Fulfilment of these ideas should lead us to eliminate the educational limits between full-time, evening and postal tutition and provide any Russian student regardless of his residence with free access to studies with the best lecturers. This form of distance education system is being realized effectively on the basis of MSUCE open network including numerous universities – partners of Association of Construction Universities (ACU).

#5

What educational programmes are the most advanced and perspective for the training of the professional nanotechnologists in construction industry?

I. Sechin — 18.12.2009 16:47

V.I. TELICHENKO, 18.12.2009 17:38:

In MSUCE material and technical basis has been formed in order to provide scientific and educatioal process in the field of nanotechnologies and nanomaterials. Educational and methodical complex on discipline «Fundamentals of nanotechnologies in construction» was elaborated. Work programmes on specializations «Technology of construction nanomaterials» for speciality 270106 and «Safety of construction objects of nanoindustry» for speciality 270102 have been prepared. Some departments of following institutes and faculties took the part in this work: Institute of fundamental education, Builing and Technology Department, Department of Civil and Industrial Engineering, Water supply and water removal Department.

#6

I would like to know more about safety and health protection of nanotechnological product consumers. How should it be provided according to experts?

Eugene — 18.12.2009 16:48

V.I. TELICHENKO, 18.12.2009 17:39:

One of MSUCE central line of investigation and development in the field of nanotechnologies is solving of fundamental industrial problems of nanosafety and room nanoecology and investigations of earlier by-way processes of nanodefect effect on softening of constructional materials and on accelerated deterioration of constructional structures.
Particular acuteness and complexity of this problem lies in the possibility to solve it only under uncommon integration of the results of fundamental and applied investigations in a number of latest scientific branches, including the field of physics and chemistry of nanometric processes, mechanics of solid body, quantum molecular dynamics, nanometric defects of surface softening, refined methods of experimental investigations and measurements, nanobioecology and a whole series of other adjacent fields.

#7

New cement plant is to be constructed in Saint Petersburg, its contractors will be the representitives of China (http://www.regnum.ru/…1227292.html). Are nanotechnologies planned to be implemented in manufacture at the new plant?

DevelopMen — 18.12.2009 16:49

A.N PONOMAREV, 18.12.2009 17:39:

I don’t have any information about that. It’s probably something quite different is meant – not cement plant (ecologically complex manufacture, hardly it would be located in urban area, especially within limits of new requirements to sanitary-hygienic zones) but concrete plant, i.e. ready-mix concrete plant. Such plants are constructed in large quantities and they are always situated closely to the place of marketable concrete application and then they are moved to the new site. It is what Chinese contractors are going to do in the context of construction of «Baltik pearl» blocks and definitely that is not contrary to the possible need to obtain, for example, nanostructured marketable concretes of different brands, if this is provided by documentation.

#8

The nanoconcretes have been talked about for a long time. What other alternative constructional materials are created and exist?

Anton — 18.12.2009 16:50

A.N PONOMAREV, 18.12.2009 17:40:

Dear Anton! The term ‘nanoconcrete’ is a sort of purely philological things, but not technical at all. It is better to call these concretes nanostructured (the dimension of concrete products isn’t measured by nanometers, is it?) but the more suitable definition is: compositions for constructional materials on the basis of nanomodified mineral astringents. These are such compositions which mineral astringents contain some nanodimensional additives – nanomodifiers. There is a great variety of such nanomodified concretes as well as nanomodifiers. That’s why we can talk about alternative only in the sense of composite materials on the basis of polymer binding but not mineral astrigent. There is a wide range of bindig materials too, just as many nanodimensional additives nanomodifying this binding components.

S.V. KALIUZHNIY, 18.12.2009 17:42:

The subject of creation of new structural materials for construction industry needs is very important and acute task. Certainly it is not confined only to creation of modifiers for concretes and astringents. Modern construction industry uses a great variety of materials part of which is made by means of nanotechnologies. These are heat insulation materials, new paints, lacquers, enamels and many others. Structural composites deserve special attention. Today this is a very wide range of structural materials with polymer, metal, intermetalloid or ceramic matrix. In contrast to metal alloys which crack-resistance is determined by plastic yielding, composite crack-resistance is determined by formation of numerous microcracks in matrix, fiber and on the division surface. This allows to use highly modular substances with potentially high strength (boron, carbon in different forms), compounds with covalent and ionic bonds as the main components of structural materials. The typical example of composites is coal plastitics – composites with friable polymer matrix and friable carbon fibers.

#9

Does anybody watch how nanoconcrete newly-erected buildings and bridges behave themselves?

Kret — 18.12.2009 16:50

A.N PONOMAREV, 18.12.2009 17:40:

There is an engineering supervision service in organizing system of transport construction and civil and industrial engineering both. This service functions effectively as the objects are very important. The first highway bridge which road slab was made of light nanostructured concrete was set in operation in the end of 2007. This is the bridge across Volga river in Kymry city, Tver region. Road slab condition is controled regularly by the specialists of MO-90, which implemented the modernization of this bridge. Over the some period of time no disfunction in slab condition was revealed.

#10

Many research centers consider the opportunity to use carbonic nanotubes to reinforce composite materials including building ones. However the high cost of nanotubes makes it difficult to implement them in construction mass application products. Are the processes of cost price decrease of carbonic nanotubes and large-capacity manufacture considered in order to implement them widely in building materials?

Andrey Simakov — 18.12.2009 16:51

A.N PONOMAREV, 18.12.2009 17:40:

Dear Andrey Simakov! The matter is that the issue on carbonic nanotubes and carbonic nanoparticles of various kinds and also on perspective of their application in different composites has been one of the most important line of our work for the last decade. I can definitely tell you that to talk about carbonic nanotubes is in some sense incorrect in general. There are four main kinds of carbonic nanotubes technologies, thirty nine types of forming tube chirality of graphen surface, many types of different defects and depending on them nanotubes may be conductors, dielectrics and semiconductors. Nanotubes transverse sizes may vary from 1 nm up to 10000 nm. In the latter case we can’t even mention nanotubes. It’s natural that the results being gained from introducing of these different materials in composites will vary greatly.
However dispite of I’ve told earlier I can also claim that one more type or carbonic particles exists and interaction of these particles with polymer composite matrix or with mineral astringent may has effusive extreme character. I mean astralen particles – multilayer carbonic particles of fulleroid type of toroidal form. For such particle topology the possibility of gigantic resonance of field gain factor on their surface was discovered. This leads to unusually high levels of dispersed forces and to the possibility to modify composite materials with high-performance giving them nonlinearity to all groups of their properties – phisicomechanical, electrophysical, optical and thermophisical. There are quite many publications on this issue. You can acquaint with some of them on our website www.nanoteh.ru.
In view of the aforesaid, the quantity of astralen particles being introduced in composite may be immensely small and the issues on the proplems of their cost and mass production either fall away or are solved automatically. If we talk about other carbonic nanomaterials which are also very effective regarding compositions on the basis of mineral astrigent, it’s possible their large-scale production in simplified variant. There is only one problem – preparation of construction market for wide consumption of new nanostructured concretes.

A.A. KETOV, 18.12.2009 17:46:

It’s true that today there is a number of technologies allowing to produce carbonic nanotubes with high structural and mechanical characteristics. But you were right when marked that the main problem of mass application nanotubes in composite building materials still lied in their high cost price. Nanotube manufacture is complicated by the slow rates of growth and high power consumption.
The researches on catalytic pyrolysis of carbon under using transition metal nanoparticles as pyrolysis catalyst carried out in our laboratory let us to obtain carbonic nanotubes at relatively low temperature but with the high performance. Reinforcement by obtained composite nanotubes on the basis of portland cement and polymers gives us hope of economic practicability in manufacture of such filler for mass production.

#11

Are the new developments easily implemented in established manufactures?

Sergey Tel’tsov — 18.12.2009 16:52

S.V. KALIUZHNIY, 18.12.2009 17:42:

That is difficult and not only in our country.
As for construction industry, all we want to live in warm, comfortable, safe houses consuming minimum of energy and so on. It is not wise to suppose that the builders don’t realize that and ignore the appearance of new materials. The key word in the list mentioned above is “safe”. Let me present you one example. Many people probably remember that when Metromost was being constructed salt was used to acccelerate concrete hardening in winter period. Very soon the station which had been built within 15 months started falling to ruin under train vibration and moisture of river flowing under it. When heavy raining or snow melting water flows run along the station itself. Salt added in concrete was excellent water absorber and that caused rapid corrosion of reinforcement. Thus, by the 1984, twenty six years later after the station had been opened, Moscow lost «Leninskie gory».
Every material employed in construction and not only in construction should pass the number of tests. In some countries, for example in Germany, for this aim pretty good conditions are created, that’s why Germany is one of the world leaders in the field of innovations of new materials implementation in manufacture and not only for construction. We can’t boast of that yet, obsolete building code to be reconsidered provides additional obstacles. We realize this problem and tackle it.

#12

I read a lot about different kinds of paints: heat insulation paint which one layer equals several centimeters of traditional heat insulator, self-repair paint which «cures itself» when scratching and keeps its characteristics for many years, so called fire resistant paint, which not only is incombustible but also can extinguish burning due to microcapsules with special substance included in her composition.
I would like to know how far from reality these developments are. What other possible paint characteristics do you know? And the most important thing, is it possible to create the single paint type which would combine all the properties mentioned above?

Aleksey Karpenko , NanoNewsNet — 18.12.2009 16:52

S.V. KALIUZHNIY, 18.12.2009 17:43:

These developments are absolutely real and many of them are being actively used. There are many uncertainties in your question. Only several paints mentioned above concern with nanotechnologies. Modern coatings may provide all properties listed above. Is it possible to collect all of them together? It’s likely ‘yes’, it is the matter of cost and necessity.

E. KOLESOV, 18.12.2009 17:44:

One of the examples of how construction nanotechnologies are used in China is nanoporous wall coating keeping the warm inside the room in winter and conditioned coolness in summer. The invention is translucent layer with high isolating characteristics and ability to provide so called «thermos effect». According to creator design this coating is planned to be used in large-scale construction as well. In this way, for example, almost 3000 square meters of the walls of Shangai Science and Technology Museum are covered by similar material. These methods are planned to be used in exhibition hall of German national pavilion too. Specialists believe that very soon nanoinsulating coatings «will occupy» residential areas providing the additional savings of energy and environmental protection.
Invention of special coating which is able to resist to water and oil drop pollution effect for building materials by means of nanotechnologies is should be noted too. As the result ‘lotos effect’ is achieved, when the drops slide down the leaf surface due to its particular structure like mercury balls washing off at once all the dirt, never leaving traces and keeping it always clean and dry. The largest sphere of invention application – National Grand Theatre in Beijing.

#13

What do participants say about road construction? Does Russia have a chance to solve at least one of its problems?

Georgiy — 18.12.2009 16:53

S.V. KALIUZHNIY, 18.12.2009 17:43:

Recently we launched the project on the setup of additive production for asphalt and concrete pavings «Unirem». The additive is composite material on the basis of active descrete devulcanite powder, being obtained by the method of used rubber high-temperature shift grinding. The use of this additive allows to increase road paving durability, to improve sliding resistance under icing and crack resistance, to increase resistance to alternate temperature swings, coating shockproofness and to decrease noiseness. Application of used tire-cover rubber crumb to gain this object is expedient measure both from the point of view of considerable improvement of asphalt characteristics and asphalt and concrete paving and from the point of view of heavy tire-cover rubber wastes utilization.
Of course that doesn’t solve the quality problems of all roads in our country but I believe we shall manage to change the situation somewhere.

#14

I would like to know what country has the most advanced works in the sphere of nanotechnology implementation in construction industry.

Nikolay Stepanov , NanoNewsNet — 18.12.2009 16:55

E. KOLESOV, 18.12.2009 17:44:

For the last years China pays great attention to the nanotechnology elaboration, considering it as the most priority-driven tends for science and state development. Moreover today the PRC has approached to the stage when scientific investigation and nanoindustry development are followed by mass implementation and its product application. According to the Chinese association of nanotechnologies forecast, by 2012 the cost of the products manufactured in China by means of nanomethods will amount to $2,2 milliard and by 2014 the country will control 15% of international market in this field.

Talking about successful experience of nanotechnology application in producing of chinese building materials being manufactured under the interest, participation and support of the government we can point out many achievements. For example, one of them is creation of antibacterial ceramic products on basis of nanoparticles antibacterial function with infrared light. The investigations carried out by the chinese scientists have proved that ceramic products being manufactured in this way favour improvement of bloodcirculation and immunity and even stop premature aging that makes the invention to be considered as something incredible and promises a wide scientific and social acknowledgement in the nearest future.

#15

Today mass media often announces news about energy-efficient houses, houses where at the roofs solar panels are installed and so on. Is it likely that everything is going to so-called «smart house» with autonomous energy supply?

Sergey Ivanovich — 18.12.2009 16:56

E. KOLESOV, 18.12.2009 17:44:

As the example of how the energy efficiency problem is solved we can name some achievements of chinese nanoindustry: the ability of special nanocoating to accumulate solar energy during the day and to radiate the light for a long time after power dump. This discovery may be succesfully applied in traditional flats. Moreover the windows of the rooms can play the role of solar batteries.
One of the important advantages of this technology is the lower price in comparison with expensive «ordinary solar batteries».

#16

In October the last International forum on nanotechnologies saw the project on heat insulation material manufacture on basis of foamed glass which was mentioned by A.Chubais as a breakthrough in construction material production. But the foamed glass technology has been known for a long time. What is nanotechnological constituent of the project and in general what for does one «discover» well-known material again?

V.N. Gusarenko, lecturer, Orenburg — 18.12.2009 16:58

A.A. KETOV, 18.12.2009 17:46:

In fact foamed glass as a material is known since as early as 30s of the last century. Since then the technology practically hasn’t changed, it became functionally obsolete. This to my mind caused all the foamed glass plants at the territory of Russia to stop their production.
The technology developed by us differs from the well-known classical one in a following way: the glass particle surface is applied by the reagent layer which thickness is tens (approximatly up to 100 − 120 nm) nanometers. This layer produce setting, powder mass hardening − as it happens in cement mass. In obtained monolithic mass the layer between glass particles not only retains them as if they were in rigid framework but also evolves gaseous components under heating forming foamed glass. Thus the layer with nanodimensional size gives the material two new properties – capability for hardening and gassing under high temperatures. This let us to made a real breakthrough in foamed glass technology – considerably to improve technology economic indicators, to develop a number of new products and to use traditional unassorted cullet as a raw material.

#17

The theme of foamed glass as one of the most universal and effective heat insulational construction materials has been of great interest for a long time. There is a manufacture of such material in Belorussia, too. For the last several years we could hear a lot about many projects on creating works in many Russian cities. We knew that RUSNANO backed the development from Perm. In what way does this proposal differ from other ones?

V.M. Kapzevich and A.N. Leonov, Belorussia state agricultural technical university — 18.12.2009 16:59

A.A. KETOV, 18.12.2009 17:46:

Earlier I have already answered the question on the pincipal distinctions between our technology and classical powder one, and also on nanocomponent of proposed process. But it would be impossible to solve this problem without rich scientific and technological experience of our collective. By the time when we filed the application to Rusnano we had not only tens of publications, patents and several defended theses but also founded functioning manufacture. That’s why we were solving the problem of development of effective foamed glass technology sistemically– proceeding from component physicochemical properties and optimization of engineering decisions and not as it often happens by trial and error. At the same time I disagree with the head of State Corporation RUSNANO, that lecturer should be able to create business (http://irk.kp.ru/…news/577719/). To my mind from the very beginning our project had the high potential because in formed collective the lecturers of Perm State Technical University could determine and solve commerial tasks within the limits of their specialty (for example, improving heat exchange of billet in order to decrease the product cost price) and the businessmen in their turn understood ‘boundary conditions’ in scientific issues but didn’t try to solve them.

#18

The theme of nanotechnologies became very popular nowdays – you can hear about nanopaints, nanomedcine, and even about nanoair. But from atomic and molecular structure of the world point of view many structures have nanodimensional sizes – one can find «nanocomponent» nearly in every process or product. So, for the major part of technical crystalline materials the elementary cell edge length is 0,3 – 0,5 nm, the length of polymer molecules equals tens nanometers, the average size of micelles is 1 – 100 nm. Thus nearly every process can be referred to nanotechnologies. What principles do you follow when determine process as nanotechnology?

A.L. Zholobov, Ph.D. in engineering, professor assistant of Construction technology Department, Rostov state construction university — 18.12.2009 17:00

A.A. KETOV, 18.12.2009 17:47:

To my mind nanotechnology is not determined even by the size divisible by nanometers or angstrom. The main thing is to understand how one should control the matter transformation processes from the level of molecules and clasters and right up to macrosize, it is microcosm structures (ions, molecules, clusters) that determine technologial characteristics of the final product. In this sense the difinition of nanotechnologies given at the SC RUSNANO website (http://www.rusnano.com/…wnload/14846) is completely correct to my mind only at the point where it says that nanoscale size structures certainly effect on macroproperties of the products – «obtaining products with new chemical, physical, biological characteristics». Nanoscaled size structures (clusters, pores, phase includings and so on) can be found practically in any material object. At the same time few matter transformation technologies can be found when nanodimensional structures control would make it possible to obtain directly macroobjects with specified properties. And only the last case concerns nanotechnologies.

#19

Do according to online-conference participants researchers of materials and technologists have sufficient scientific potential in the field of constructional materials to consider nanotechnological problems in their spheres?

E.M. Chernyshov, member of Russian Academy of Architecture and Construction Sciences, Doctor of Engineering, Professor, Voronezh State University — 18.12.2009 17:01

V.R. FALIKMAN, 18.12.2009 17:48:

This question is very important but it’s rather abstract too.
Theoretically, they definitely have such potential. This is proved for examle by the materials from three workshops on the problems of nanomaterials and nanotechnologies implementation in construction – NICOM 1 (Paisley, Scotland, 2003), NICOM 2 (Bilbao, Spain, 2005) and NICOM 3 (Prague, 2009). The core technical committees of International organizations worked and are still working very hard (ТС 197-ТСМ RILEM, subcommittee 236D ACI and others). Intensive investigations are being carried out in 28 specialized scientific centers of the world. The European project PICADA was accomplished successfully; its aim was to develop megapolis pollution control methods on the basis of constructional materials with introduced photocatalystic dioxide of titanium. «Road maps» of European community, the USA, China, Japan and other countries have been developed and are operating succesfully.
At the same time complicated situation in the field of similar projects development in Russia has formed. It hasn’t yet worked to draw up the integral ecomomic mechanism tieing together science, industry and education. The attemps to create single elements of innovative system (state funds of scientific investigations and innovations support, industrial parks, venture funds, special economic zones) without connection with main participants of innovative activity and out of the contact with «market economy» working under real conditions didn’t give any considerable result. Generally for nanotechnologies such ground is engineering sites and small technological firms. Formers have disappeared in Russia in the late 90es and the latters are developing with the great difficulties. That’s why we clearly understand that research system in our country is needed not only in motivation but also in certain reforms. To this we should add usually obsolete material base, by the way far from being cheap, great complexities in training, recruitment and hiring of young specialists and personnel for the work in different spheres of nanotechnologies and nanomaterials and also in raising the level of their qualification.

#20

Doesn’t it seem to on-line conference participants that now there is fetishism, some kind of religious service, when nanotechnologies are given some supernatural magic force?

E.M. Chernyshov, member of Russian Academy of Architecture and Construction Sciences, Doctor of Engineering, Professor, Voronezh State University — 18.12.2009 17:02

V.R. FALIKMAN, 18.12.2009 17:49:

It can't altogether be denied. Of course this is growing sector of ecomomy. According to analytical agency forecast, only in the USA the sales volume of nanomaterials and nanotechnologies will have achieved 100 millions of dollars in 2011, and by 2025 it will has increased up to 1,75 mlrd of dollars generally due to implementation of coatings, composites, adhesives, nanoadditives for concretes and cements, paints, glasses and so on. Development indicators of 23 leading industrial and financial groups including Bayer, Cabot, DuPont, Elementis, Nanocor, Pilkington and others prove this tendency. However it’s certainly difficult to expect that «nanotechnological revolution» will take place in construction – construction industry considerably differs itself from other spheres of human activity and to a certain extent it’s conservative.

#21

Don’t colleagues think that some kind of vulgarization exists in terminology concerning nanotechnologies?

E.M. Chernyshov, member of Russian Academy of Architecture and Construction Sciences, Doctor of Engineering, Professor, Voronezh State University — 18.12.2009 17:03

V.R. FALIKMAN, 18.12.2009 17:49:

Definitely yes. That’s why one should back and greet the establishment of Technical committee on standartization «Nanotechnologies and nanomaterials» TC441 attached to Rostechregulirovanie and initiative of Research center for the study of surface properties which took the trouble to prepare the first edition of national standart «Nanotechnologies. Terms and definitions». TC465 «Construction» was involved in this intensive work too.

#22

What publications in specialized (construction, constructional materials) editions can you recommend to read in order to form a system of views on the problem «Nanotechnologies in construction»?

E.M. Chernyshov, member of Russian Academy of Architecture and Construction Sciences, Doctor of Engineering, Professor, Voronezh State University — 18.12.2009 17:03

V.R. FALIKMAN, 18.12.2009 17:49:

The volume of these editions is constantly increasing from year to year. I can mark interesting monograph of Peter J.M. Bartos, John J. Hughes, P. Trink «Nanotechnology in Construction» (2004), proceedings of mentioned above workshops, special session reports of ACI «Nanotechnology of Concrete: Recent Developments and Future Perspectives», November 7, 2006, Denver, USA and a number of others collections. Internet-editions are developing rapidly, including Internet-journal «Nanotechnologies in construction» in the first issue of which one can find several reviews on related themes.

#23

What are the resource reserves of raw nanomaterials for construction industry today?

R.S. Kozaev, Ukrain, Kharkov region — 18.12.2009 17:06

S.F. KOREN’KOVA, 18.12.2009 17:50:

In the nearest future resource reserve may involve comprehensive application of natural raw nanomaterials (for example, high-ductility clay), and anthropogenic raw materils (for example, mud wastes of enterprises). Probably «close inspection» of existing wastes and concurrent products will make it possible to enrich the collection of nanoadditives and corrective components.

#24

How do the nanoadditives work in concrete and cement mortars?

N.I. Pashintsev — 18.12.2009 17:08

S.F. KOREN’KOVA, 18.12.2009 17:50:

Nanodispersed fillers are «highly precise» mineral substances that actively form adhesive strength of cement stone and as a result increase the concrete durability (frostresistance, water impermeability and so on), Moreover they improve structural and rheological properties of cement mortars and their performance characteristics.