Krasnoyarsk scientists have created high-strength concrete from waste
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Siberian scientists have developed a technology for producing high-strength concrete based on industrial and household glass waste. The new glass concrete is not only cheaper and stronger than its analogues, but also reduces the amount of non-degradable glass waste. The results of the study are published in the journal Buildings. The research work was carried out within the framework of the priority areas of activity of the Yenisei Siberia Research Center - new industrial technologies and the greening of the economy.
Glass waste is considered the most difficult to dispose of and, contrary to popular belief, harms the environment. Glass practically does not decompose under the influence of natural processes, as well as most alkalis, acids and salts. Every year, a large amount of industrial and household glass waste is generated in the world, which, however, can be recycled and used in the production of new products.
Scientists of the Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences with colleagues from the Siberian Federal University have developed an improved high-strength glass-filled concrete consisting of 90% glass waste. Window glass waste was used as cullet.
Glass as a filler for concrete compounds usually reduces the strength of the material due to the chemical interaction of glass and cement. Therefore, the researchers presented a new approach to the creation of composite glass concrete: experts crushed broken glass. Glass particles of about 50-60 micrometers in size, obtained in a ball mill, were used as a filler. Glass was also used as a binder, but crushed even more — down to one micrometer. As a result of a number of experiments, scientists managed to increase the strength of the glass-concrete composition by 2.5 times.
"Humanity produces a large amount of non-degradable and hard-to-decompose waste, which has a significant anthropogenic impact on the environment. The placement of these wastes in landfills is irrational from an economic point of view, since it removes the material from economic circulation," said Sergey Dobrosyslov, Candidate of Technical Sciences, researcher at FITC KNC SB RAS. – We have developed a high-strength building material based on industrial and household glass waste. The use of waste in the production of materials will reduce both the anthropogenic burden on the environment and the cost of finished products. The use of waste is 2-3 times cheaper than natural raw materials. The new composite opens up opportunities to create more durable and sustainable structures in the future."
It should be noted that the resulting composite can be used in construction, decoration and restoration of buildings where the most durable and durable materials are required.
