Experimental research on strength and durability of recycled aggregate concrete with lithium slag
LI Jianpei
Abstract：The influence of the replacement rate of lithium slag on the axial compressive strength and elastic modulus of re-cycled aggregate concrete is studied through experiments. The frost resistance of recycled aggregate concrete is studied by fast freeze-thaw test,and the carbonation resistance of lithium slag recycled aggregate concrete is studied by rapid carbonation test. The results show that with the increase of the content of lithium slag,the axial compressive strength and modulus of elasticity of recy-cled aggregate concrete increased at first,and then decreased. When the replacement rate of lithium slag is 20%,the 7 d and 28 d axial compressive strength of recycled aggregate concrete increased by 39.1% and 41.3%,and the elastic modulus of recycled ag-gregate concrete is increased by 11.3%. Meanwhile,the frost resistance and carbonization resistance of concrete are the strongest. When the substitution rate of lithium slag is 30%,the internal defects of concrete increased. The compressive strength of concrete begins to decrease,and the frost resistance and carbonization resistance of concrete become weakness.
Keywords：lithium slagrecycled aggregate concreteaxial compressive strengthfrost resistancecarbonization resistance
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 67-69,80 )