Effect of controlled permeable formwork on the improvement of concrete performances

被引：11

作者：

Chen, Cuicui ^{[1
]}

Liu, Jianzhong ^{[1
]}

Cui, Gong ^{[1
]}

Liu, Jiaping ^{[1
]}

机构：

[1] Jiangsu Res Inst Bldg Sci, State Key Lab High Performance Civil Engn Mat, Nanjing 210008, Jiangsu, Peoples R China

来源：

2011 CHINESE MATERIALS CONFERENCE | 2012年 / 27卷

关键词：

concrete; controlled permeable formwork; performances; pore structure;

D O I：

10.1016/j.proeng.2011.12.468

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to investigate the influence of controlled permeable formworks (CPF) on concrete, samples were made in steel modulus with and without CPF. Visible surface morphology, adsorption of water and chloride, permeability of Cl-, together with pore structure of the surface layers were studied and analyzed. It's indicated that, by the application of CPF, concrete could be enhanced and the surface is homogeneous without any visible blow-holes. Also, adsorption and permeability of water and chloride ion into concrete were inhibited. According to mercury intrusion porosimeter, the porosity in the thickness of 0-3mm under surface was reduced from 10.48% of the control sample to 7.04%. The largest decrease existed in pores with diameter of larger than 0.2 mu m. The study indicates that CPF could markedly improve the appearance as well as the durability of concrete structures. (C) 2011 Published by Elsevier Ltd.

引用

页码：405 / 411

页数：7

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