Experimental Study on Compressive Strength and Shrinkage Performance of Glass Recycled Concrete
In this paper,the effects of glass powder on the properties of recycled concrete were studied by testing the slump,compressive strength and dry shrinkage of recycled concrete specimens with different glass powder content,and analyzing their microstructure by SEM.It is found that doped glass powder can effectively improve the working performance of concrete,and it is proportional to the glass powder content.Doped glass powder can reduce the early strength of concrete,but with the increase of curing age,this negative effect gradually weakens.At 90d,the strength of concrete specimens with 15%glass powder content is slightly higher than that of the base group,exceeding 1.63%;The doping of glass powder can effectively reduce the dry shrinkage deformation value of concrete.At 180d,the dry shrinkage rate of concrete sam-ples with 25%glass powder content is reduced by 42.92%.After comprehensive evaluation,15%is determined to be the best dosage of glass powder.
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