Effect of Waste Glass Powder on Properties and Micro Pore Structure of Foamed Concrete and Its Value Engineering Analysis

Abstract

Abstract: The main composition of glass after grinding is similar to that of fly ash, which has potential pozzolanic activity. In order to improve the recycling rate of waste glass, the combination of foamed concrete and waste glass powder is used to improve the performance of foamed concrete, reduce cement consumption and enhance the recycling rate of waste glass. The effect of waste glass powder used as cementitious material to replace part of cement on compressive strength, dry density, drying shrinkage rate and softening coefficient of foamed concrete were studied. The results show that compressive strength of foamed concrete can improve by adding waste glass powder content within 0%~30% (mass fraction,the same below) of total mass of alternative cementitious materials. When waste glass powder content is 20%, the compressive strength of 28 and 56 d reach the maximum value, while the compressive strength of foamed concrete with 30% waste glass powder content reaches the maximum value at 120 d. Waste glass powder reduces the dry shrinkage value of foamed concrete, and the greater the content, the greater the reduction of dry shrinkage value, which helps to improve the problem of foamed concrete easily to crack. The addition of waste glass powder can significantly improve the softening coefficient of foamed concrete, which is conducive to its application in wet or underwater environments. In addition, from the perspective of changes of micro pore structure, the rules of mechanical and durability properties of foamed concrete caused by waste glass powder were explained. Finally, by analyzing the value of foamed concrete with waste glass powder, its environmental protection and economy were quantitatively proved.

Key words: waste glass powder, foamed concrete, mechanical property, durability property, micro pore structure, value engineering analysis

CLC Number:

TU55⁺1.33

YIN Pengxiang, LI Jing. Effect of Waste Glass Powder on Properties and Micro Pore Structure of Foamed Concrete and Its Value Engineering Analysis[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(3): 1021-1029.

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