Ⅱ级粉煤灰高性能混凝土的长期抗硫酸盐侵蚀性能.pdf

粉煤灰综合利用 2012No.6 FLY ASH COMPREHENSIVE UTILIZATION 试验与应用 Ⅱ级粉煤灰高性能混凝土的长期抗硫酸盐侵蚀性能 The Capability of Long Term Corrosion-Resistance of Fly Ash High Performance Concrete 阿里木江·苏拉依曼,唐新军1,李方元,周阳2 (1.新疆农业大学水利与土木工程学院,乌鲁木齐830052;2.石河子大学水利建筑工程学院,石河子832000) 摘要:按高性能混凝土配比制配不同水胶比、不同Ⅱ级粉煤灰掺量的普通水泥胶砂试件,浸泡在不同浓度的硫酸 盐溶液中,进行长达2年的侵蚀试验。结果表明:短龄期养护条件下较低粉煤灰掺量(30%)试件在高浓度硫酸盐侵蚀环 境中的长期抗蚀能力有限。而随养护龄期和Ⅱ级粉煤灰掺量的增加以及水胶比的降低,试件的抗蚀能力大幅度提高,体 现出优越的长期抗侵蚀能力。 关键词Ⅱ级粉煤灰混凝土长期硫酸盐侵蚀;抗蚀能力;微观特征 中图分类号:TU528.33 文献标识码:A 文章编号:1005-8249(2012)060018-04 Alim Sulayman' ,TANG Xin-jun' ,LI Fang-yuan' ,Zhou Yang ( 1.College of Water Conservancy Civil Engineering ,Xinjiang Agricultural University ,Urumqi 830052 ,China 2 .College of Water Conservancy and Architectural Engineering ,Shihezi University ,Shihezi 832000 ,China ) Abstract :Mortar specimens in different water-binder ratio and different contents of II fly ash which were made according to the ratio of High Performance Concrete ,immersed in solutions of different concentrations of sulfate ,up to 2 years of test .The results indicated that the curing conditions of the short age of lower content of fly ash of the specimen limited long-tenn resistance to corrosion in the environment of ...