Colloids and Surfaces A 538 (2018) 686–693 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa a,1 a,b,1 a a, a a Jian Chen , Min Qiao , Nanxiao Gao , Qianping Ran , Jingzhi Wu , Guangcheng Shan , a b, Shuai Qi , Shishan Wu State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd., Nanjing 211103, PR China School of Chemistry and Chemical Engineering, Nanjing University, Xianlin Campus, 163 Xianlin Avenue, Qixia District, Nanjing 210023, PR China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: In this work, we report for the ﬁrst time the applications of cationic oligomeric surfactants as novel air entraining Oligomeric surfactants agents for concrete. A series of oligomeric surfactants with the oligomerization degrees from 2 to 4 was syn- Air entraining agents thesized. Using them as the air entraining agents, the surface activity and foaming properies were tested in both Concrete water and cement ﬁltrate. The air contents and air-void parameters were also tested in both cement mortars and Surface activity concretes. The results show that the oligomeric surfactants have higher performance compared with their Foam monomeric analogue and traditional air entraining
Geoderma – Elsevier
Published: Feb 15, 2019
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