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《Concrete》 2005-11
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Case studies of pumping structural lightweight aggregate concrete based on expanded clay

LI,Xin-cheng~1,DING Jian-tong~2,LI Zhang-jian~1(1.Yunnan Construction Concrete Co.Ltd.,Kunming 650051,Yunnan,China;2.Department of Civil Engineering,Tsinghua University,Beijing 100084,China)  
Engineering cases of pumping structural lightweight aggregate concrete(LWAC) with expanded clay are introduced.1244m~3 LWAC in total with strength grade of LC15~LC50 was pumped in three construction projects with small slump loss after 1~2hours of transportation and pumping,reaching a longest horizontal distance of 100 m and a maximum height of 30m(9 floors).Water absorption of expanded clay during pumping and segregation under vibration were minimized through a specially developed pumping aid for LWAC,optimization of concrete mix proportions,enhancement of mixture viscosity,and pre-saturation of expanded clay.
【Fund】: 云南省科技厅2001年省院省校科技合作项目(2001BBBCA15A010)
【CateGory Index】: TU755.5
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