Integral hydrophobic concrete without using silane
By Feng, Zhijun; Wang, Fajun; Xie, Ting; Ou, Junfei; Xue, Mingshan; Li, Wen
Published in Construction and Building Materials
2019
Abstract
The high cost of silane and siloxane based water repellent agents limits their large scale applications in concrete. In the present work, a low cost waterborne stearic acid emulsion (SAE) was introduced to improve the water repellent properties and corrosion resistance of cement mortar (CM). Compared with the unmodified cement paste (CP), the introducing of SAE in CP generally reduced the fluidity and setting time, but increased the standard consistency water consumption of the CP. The CM modified with 1.0 wt% SAE exhibits integral hydrophobicity, with contact angles larger than 130
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