Acid Resistance of Various Mortars to Inorganic Acids

摘要：

Two types of mortars, one containing ordinary portland cement as a base material and the other containing calcium aluminate cement as a base material, were prepared. They were immersed in three kinds of inorganic acids such as sulfuric acid, hydrochloric acid and nitric acid, in order to investigate their resistance to each acid. The mortar with calcium aluminate cement showed a hither acid resistance to sulfuric acid. The reason is considered due to that the hydrate of calcium aluminate cement had a less volume change between before and after reaction, and in addition, calcium aluminate cement formed a protective film composed of alumina gel, which prevented the invasion of the acid. On the other hand, the mortar with ordinary portland cement showed a higher acid resistance to hydrochloric acid and nitric acid. The content of SiO2 is considered to have contributed to resistance to hydrochloric acid and nitric acid, which may have given advantage to ordinary portland cement with a higher SiO2 content.

关键词： ordinary portland cement calcium aluminate cement granulated blast furnace slag acid resistance calcium hydroxide

作者: Kazuto Tabara Minoru Morioka TomoakiSugiyama Etsuo Sakai

作者单位: DENKIKAGAKUKOGYO K.K.. Inorganic Materials Research Laboratory (2209,Oumi,Itoigawa—shi, Niigata 949- DENKI KAGAKU KOGYO K.K.. Cement&Special cement additives Division (2-1-1,Muromachi,Nihonbashi,Chuo-k TOKYO INSTITUTE OF TECHNOLOGY,Department ofMatallurgy and Ceramics Science Graduate School of Scienc TOKYO INSTITUTE OF TECHNOLOGY,Department ofMatallurgy and Ceramics Science Graduate School of Scienc

会议类型: 国际会议

会议名称: The 7th International Symposium on Cement & Concrete(ISCC2010)、The 11th International Conference on Advance in Concrete Technology and Sustainable Development(第七届水泥与混凝土国际会议暨第11届混凝土技术可持续发展国际会议)

会议地点: 济南

会议语种:英文

页码: 1267-1274

在线出版日期: 2010-05-09（万方平台首次上网日期，不代表论文的发表时间）