Corrosion of Permeable Concrete under Simulated Acid Rain

Abstract:

A long time immersion test of concrete specimens in dilute sulfuric acid is carried out to study the permeable concrete material aging rule under the action of the sulfuric acid. The experiment is designed by uniform design containing 4 factors and 10 levels and the soaking solution pH value is 4.00. To measure acid consumption, titration sulfuric acid with concentration of 0.125mol / L is used to keep original pH value of soaking solution, through which the corrosion rate of specimens can be determined. After certain immersion time, the specimens are dried and weighted and the weight changes of the specimens are recorded. The results show that corrosion rate of permeable concrete shares the same family of corrosion rate functions with those of ordinary concrete and mortar. However, the weight of specimen fluctuates with the soaking time, so that it may not be a proper index of corrosion.

• Periodical: Key Engineering Materials (Volume 517)
• Pages: 352-356
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.517.352
• Online since: June 2012
• Authors: Hui Fang Guo, Zhi Gang Song, Sheng Yuan Yang
• Keywords: Acid Rain, Corrosion, Permeable Concrete, Sulfuric Acid

References

[1] PanHongLei, LiWenXing, LiChangCheng, Brief discussion on the permeable concrete and its application prospects . shanxi building, 2008(34): 23-25. (In Chinese).

[2] Fang Kaitai, Ma Changxing. Orthogonal and Uniform Design of Experiments [M]. Beijing, China: Science Press, 2001. (In Chinese).

[3] ZhangXueSong . The erosion resistance performance experiment and theoretical research of the mortar under the acid environment [J]. Kunming University of Science Master thesis , 2009 (5). (In Chinese).

[4] YangShengYuan. The Durability of Water-permeable Concrete in Acid Rain Environment Study[J]. Kunming University of Science Master thesis , 2009 (5) . (In Chinese).

[5] Insightful Corporation. S-PLUS 8 Guide to statistics [M]. USA: Seattle, (2007).

[6] Hasofer A.M., Qu J. Response surface modelling of Monte carlo fire data [J]. Fire safety Journal, 2002(37): 772-784.

DOI: 10.1016/s0379-7112(02)00028-0

[7] TangXianYan, XiaoJia, ChenFeng. Acid deposition influence on the durability of concrete and research progress, 1994-2007China Academic Journal Electronic Publishing House. (In Chinese).

[8] HuZhiYuan, ChenJianXiong, SueDouXi, ChenHanBin, XiaoFei. A composite admixtures acid resistance of concrete durability performance [J]. Chongqing institute of technology learned journal, 2008: 22-24. (In Chinese).

[9] ZhangYingZi FanYingFang, LiuJiangLin, CaoXiaoXiang, The tests of C40 concrete compressive performance Under the environment of simulated acid rain[J]. building materials journal, 2010(13)： 410-434. (In Chinese).