Materials Reports  2020, Vol. 34 Issue (Z1): 185-188 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
|
|
|
|
|
| Effects of Osmotic Crystalline Surface Protectant on the Waterproofand Anti-corrosion Properties of Concrete |
| WANG Mengyu, LI Chongzhi, NIU Zhenshan
|
| School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044 |
|
|
|
|
Abstract The osmotic crystallization waterproof material has a good protective effect on the surface of concrete products. Experiments verified an Osmotic crystalline surface protectant (OCSP) could form a hydrophobic complex in the pores or cracks of concrete and affect the waterproof and corrosion resistance of the surface layer of concrete. The water absorption of the test pieces with a coating amount of 225 g/m2 is less than 0.4%, which is about 75% lower than that of the untreated test pieces, so the OCSP has a function of dense filling and water penetration resis-tance. The resistance to penetration and water repellency of the mortar layer was reduced as long-term immersion in strong electrolyte solutions such as acid, alkali and salt, the strong acid has obvious damage and erosion on the surface of mortar. However, in the environment of alkali and salt solution, the surface density and weight of the mortar would be increased, the mortar layer with OCSP has obvious delayed chemical attack and the carbonization depth was close to zero for 28 days as concrete coated with 200—300 g/m2 which could well prevent the neutralization of reinforcement protection layer of concrete members in ordinary environment.
|
|
Published: 01 July 2020
|
|
|
| Fund:This work was supported by Beijing Advanced Innovation Center for Future Urban Design(UDC2016030300). |
| About author:: Mengyu Wang, a postgraduate student in 2017 of Beijing University of Civil Engineering and Architecture ; Chongzhi Li, a professor at Beijing University of Civil Engineering and Architecture, graduated with a Ph.D. degree in civil engineering from Tsinghua University in 2004. He is mainly engaged in the research and application of concrete admixtures. |
|
|
1 章超.钢筋混凝土防腐蚀外加剂研究与应用.硕士学位论文,北京建筑大学,2019.
2 罗梅芳,宁忠东.中国西部科技,2011(3),57.
3 胡骏,洪晓苗,邵林.中国建筑防水,2013(16),7.
4 蔡世达,吴立彬,郭云波.水利技术监督,2016,24(6),57.
5 赵珏,王子明.混凝土与水泥制品,2015(6).6.
6 邓德安,阿那,方楚燕.新型建筑材料,2014(4),64.
7 Nasiru Zakari Muhammad, Ali Keyvanfar, Muhd Zaimi Abd, et al. Construction and Building Materials,2015,101,80.
8 Masayuki Tsukagoshi, Hiroyuki Miyaucm, Kyoi Tmaka, et al. Construction and Building Materials,2012,36,895. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
