碱硅酸反应-冻融循环下掺锂渣混凝土力学性能试验分析OA北大核心CSTPCD

Research is conducted on the mechanical properties of concrete mixed with lithium slag under the coupling effect of alkali-silica acid reaction (ASR) and freeze-thaw cycle (FTC),including its flexural strength and compressive strength.Alkali-silica acid reaction and freeze-thaw cycles will reduce the compressive and flexural strength of concrete.The alkali-silica acid reaction after adding a certain amount of lithium slag will slightly increase the flexural strength of concrete.The more the number of freeze-thaw cycles,the more the compressive and flexural strength decreases,and the two reactions promote each other.The early alkali-silica reaction will aggravate the influence of the later freeze-thaw damage,and the first freeze-thaw damage will also aggravate the influence of the later alkali-silica reaction.The test results show that the incorporation of lithium slag can effectively improve the mechanical properties of concrete,with lithium slag content of 20％ best.