Abstract
Liquid heat-insulation based on hollow microspheres and polymer compounds become more and more popular in the construction industry. This material enjoys indisputable technological advantages easiness of application, low mass, flexibility, good adhesion to different materials. Traditional non-organic heat insulating materials, widely presented on modern construction market, have some disadvantages. Foam concrete and gas silicate have relatively high average density, which enables obtaining items and materials with a fairly low thermal conductivity coefficient. These materials have high saturation coefficient and low values of cold endurance. Inside the mineral-wool plates, which are quite popular on the modern market, the hyperfine fibers transform into dust particles by time, and agglutinative compounds destruct, releasing toxic substances. The aluminosilicate microspheres have a high potential as a commercial product, but their market has just started forming. According to rough calculations, the cost of the product is next lower order to the hollow microspheres, obtained by industrial methods.
Highlights
The requirements for ecological friendliness and durability of the construction materials are increasing rapidly
The function of the materials, filled with hollow microspheres made of glass or aluminosilicate up to 90% and more, lies in the fact of a threefold mechanism of heat transmission: by the photons inside the material itself; by air convection; and by reflection of the main types of radiation, including heat
The concentration of the Lewis base centers comprises in aluminosilicate microspheres 4.5 × 105 mg eq/g, against 0.7 × 105 mg eq/g in cement stone, which is 6 times more. These balance of active adsorption centers in cement particles and aluminosilicate microspheres allowed strengthening of intergranular space in cement composite by forming silicate gel over their surfaces that has been proven by electronic microscopy researches, Fig. 3
Summary
The requirements for ecological friendliness and durability of the construction materials are increasing rapidly. Effective and ecologically safe materials are getting increasing demand and actuality [1 - 3] One of these materials can be thin-layered coating based on a mineral binder or a polymeric compound, filled with glass or aluminosilicate hollow microspheres. Functional properties of such materials spark off a lot of questions among the experts. An upcoming trend of this kind of waste utilization is obtaining and application of the hollow microspheres They are glass-like hollow spherical particles, occurring by combustion of coal from certain deposits in the caldrons of the heat power stations. Application of АSМ has a positive ecological effect because it enables the utilization of the wastes of production
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
