Impermeability Research of Autoclaved Propylene Oxide Sludge Shell-aggregate Concrete  

作　　者：MA Hailong CUI Chong YANG Youzhen MA Wentao 马海龙;CUI Chong;YANG Youzhen;MA Wentao(Archives,Ningxia University,Tinchuan 750021,China;School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;School of Physics Electrical Information Engineering,Ningxia University,Yinchuan 750021,China;School of Mathematics and Computer Science,Ningxia University,Tinchuan 750021,China)

机构地区：[1]Archives,Ningxia University,Tinchuan 750021,China [2]School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [3]School of Physics Electrical Information Engineering,Ningxia University,Yinchuan 750021,China [4]School of Mathematics and Computer Science,Ningxia University,Tinchuan 750021,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2022年第2期241-247,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Nature Science Foundation of China(Nos.51468053,51772153,11662015,and 51769026)。

摘　　要：We aimed to reuse the propylene oxide sludge(POS).Propylene oxide sludge shell-aggregate(POSS-A)and propylene oxide sludge gradient shell-aggregate(POSGS-A)whose main hydrated phase is tobermorite were successfully manufactured by the hydrothermal synthesis of POS and silica materials under the condition of autoclaved(180℃,1.0 MPa)curing.Influences of pre-wetting time of coarse aggregate and pressure application mode on the different concretes were investigated.The experimental results show that the concrete with POSS-A as coarse aggregate(POSS-A concrete),the concrete with POS gradient shell-aggregate as coarse aggregate(POSGS-A concrete),sintered aggregate concrete and common concrete,all have excellent impermeability performance whatever the pre-wetting time of coarse aggregate is 0.5 h or 24 h,and the pre-wetting time of coarse aggregate has a negligible influence on the concrete.The influence degree of pressure application mode on the impermeability performance of the sintered aggregate concrete is the greatest among three kinds of concrete,which has a negligible influence on impermeability performance of the other concretes.POSGS-A can be used as a green building light aggregate in hydraulic concrete.

关 键 词：propylene oxide sludge hydrothermal synthesis autoclaved aggregate IMPERMEABILITY CONCRETE 

分 类 号：TU528[建筑科学—建筑技术科学]