RESISTANCE OF DIFFERENT CEMENTING MATERIALS TO AGGRESSIVE SULFURIC ACIDIC ATTACK

Author(s): Wu Ye, Shi Liang, Liu Jianzhong
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 767-774
Total Pages: 961
Language : English

Abstract: The utilization of by-product mineral materials is to produce cementing materials with adequate to high durability. Therefore, resistance of different cementing materials with or without supplementary mineral materials to sulfuric acidic corrosion has been investigated in this article. The corrosion process was monitored by measuring the mass and compressive strength for several months. Based on the thermodynamic process, the presence of mineral admixtures was found to lower the detrimental effect of acid on concrete for the lower Ca/Si cementing mixtures performed better. Furthermore, for the specified water content, different w/b cementing systems were also discussed, that for an acid solution, neutralization ability of cementing materials could be improved by the amount of hydrated products, while the quantity of possible decomposed substances increased. So we deduced that there might exist a potential balance value between the pH of acid solution and percentage of binding materials.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00