An overview on the effect of pumping on concrete properties

被引：25

作者：

Li, Fumin ^{[1
,2
,3
]}

Shen, Wenkai ^{[4
]}

Yuan, Qiang ^{[5
]}

Hu, Xiang ^{[1
,2
,3
]}

Li, Zhuguo ^{[6
]}

Shi, Caijun ^{[1
,2
,3
]}

机构：

[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Peoples R China

[2] Key Lab Green & Adv Civil Engn Mat & Applicat Tec, Changsha 410082, Peoples R China

[3] Int Innovat Ctr Green & Adv Civil Engn Mat Hunan, Changsha 410082, Peoples R China

[4] Qingdao Univ Technol, Innovat Inst Sustainable Maritime Architecture Re, Qingdao 266033, Peoples R China

[5] Cent South Univ, Natl Engn Res Ctr High Speed Railway Construct, Sch Civil Engn, Changsha 410075, Peoples R China

[6] Yamaguchi Univ, Grad Sch Sci & Technol Innovat, Ube, Yamaguchi, Japan

来源：

CEMENT & CONCRETE COMPOSITES | 2022年 / 129卷

基金：

国家重点研发计划;

关键词：

Concrete; Pumping; Mixing; Rheology; Hardened properties; Durability; WET-MIX SHOTCRETE; RHEOLOGICAL BEHAVIOR; THIXOTROPIC BEHAVIOR; EARLY HYDRATION; FLY-ASH; STRUCTURAL BUILDUP; PARTICLE PACKING; CEMENT PASTES; SHEAR RATE; MICROSTRUCTURE;

D O I：

10.1016/j.cemconcomp.2022.104501

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Pumping is a widely used placement means for concrete construction, but both fresh and hardened property changes in concrete due to pumping. In this review, the effects of pumping on both the fresh and hardened properties of various concrete mixtures are presented in terms of each specific characteristic. Analyses of data from the published literature showed that the air content of fresh concrete is altered after pumping. The general trend in the change in rheological properties of fresh concrete due to pumping was also determined, and the mechanisms of this trend were discussed. Moreover, the improvement in the compressive strength of hardened concrete was investigated, which is considered to result from the pumping-induced hydration acceleration and the air content variation. Finally, changes in the durability of hardened concrete were discussed, and future research topics were suggested.

引用

页数：19

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