Binding material paste characteristics and porous concrete properties
ZHANG Zhao-hui 1,WANG Qin-fang 2,YANG Jiang-jin 1,YANG Juan 3(1.Changzhou Institute of Building Research Changzhou 213015,China;2.Changzhou Building Engineering Quality Test and Measuring Center Changzhou 213015,China;3.Chongqing Institute of Building Research,Chongqing 400020,China)
Binding material paste characteristics and porous concrete properties are studied.The results indicate that binding material paste fluidity dependends on the water to binding material,based on the same mixing proportion.The applicable paste fluidity is 160 mm to 200 mm for porous concrete compaction,in which 160 mm to 180 mm is suitable for vibration compaction,and pressure compaction is appropriate with flow of 180 mm to 200 mm.Porous concrete with good compressive strength and large void ratio can be gained by proper vibration time or pressure.
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