Study on Preparation and Properties of Foamed Lightweight Concrete with Limestone Powder
Taking a foam lightweight soil roadbed project as the background,the recycling of waste re-sources and reducing the cost is realized.Through the tests,the effects of different limestone powder mixing,polycarboxylic acid water reducing agent mixing on the foam lightweight soil dry density,flu-idity,unconfined compressive strength and other properties were investigated.The results show that the incorporation of limestone powder will reduce the dry density and fluidity of foam lightweight soil,and the maximum compressive strength of foam light soil can be achieved with 40％content of lime-stone powder.In addition,appropriate amount of polycarboxylic acid high-performance water reduc-ing agent can be added to increase the flowability and compressive strength of foam lightweight soil,and the optimal mixing amount of polycarboxylic acid water reducing agent is 0.6％.
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