Sign up for our Newsletter

Publications

Pro084-1

EVALUATION OF SULFURIC ACID DETERIORATION OF CONCRETE WITH DIFFERENT ADDITIVES



Author(s): Y.OOKAME, Y.HATANO and K.KAWAI
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: 738-747
Total Pages: 961
Language : English


Abstract: Recently the deterioration of concrete caused by sulfuric acid attacks in sewage and waste water treatment plants has been reported. As a countermeasure against this kind of deterioration, acid resistant cementitious materials using multiple mineral admixtures such as blast furnace slag, fly ash and silica fume have been developed. In this study, the effects of the use of mineral admixtures on concrete deterioration due to sulfuric acid attack were investigated. From the experimental results, the deterioration of concrete caused by sulfuric acid attacks can be divided into two stages. In the first stage, sulfuric acid penetrates into concrete and reacts with calcium components to product gypsum, resulting in the expansion of concrete. In the second stages, the expansion of concrete exceeds an allowable limit, and the erosion of concrete begins. The experimental results also showed that there were linear relationships between the CaO content in the binder and the period of the first stage, and between the CaO content and the erosion rate.


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


>> You must be connected to view the paper. You can register for free if you are not a member