高抛20 m以上C60自密实混凝土流变性能的研究及应用  

RESEARCH AND APPLICATION OF RHEOLOGICAL PROPERTIES OF C60 SELF-COMPACTED CONCRETE WITH ALTITUDE OVER 20 METERS

作　　者：王杰之 金颖 袁福兴 李强 WANG Jie-zhi;JIN Ying;YUAN Fu-xing;LI Qiang(Beijing Construction of New Building Materials Co., Ltd., Beijing 100015, China)

机构地区：[1]北京建工新型建材有限责任公司

出　　处：《建筑技术》2019年第8期953-955,共3页Architecture Technology

摘　　要：研究C60自密实高抛混凝土的流变性能,通过对比分析水胶比、砂率对流变性、工作性能、强度及抗离析性能的影响选出适用于实际生产的最优配合比。将混凝土的流变性能V漏控制在25s以内,T500控制在5s内,扩展度大于700mm,分层度控制在0.450范围,并成功用于实际工程。By comparing and analyzing the effects of water glue ratio, sand ratio on rheology, work performance, strength and segregation resistance performance, the optimal fit ratio for actual production was selected. The design process of this project requires the rheological performance of concrete: the V leakage control is within 25 s, the T500 is controlled within 5 s, and the expansion is greater than 700 mm. Finally, the optimal matching ratio is designed through comparative tests and successfully used in this project.

关 键 词：高抛混凝土 自密实 工作性能 分层度 流变性 强度 

分 类 号：TU74[建筑科学—建筑技术科学]