掺Ⅱ级粉煤灰高性能混凝土在短龄期养护条件下的抗侵蚀性能初讨.pdf

粉煤灰综合利用 2010No.5 FLY ASH COMPREHENSIVE UTILIZATION 掺Ⅱ级粉煤灰高性能混凝土在短龄期养护条件下 的抗侵蚀性能初讨 Preliminary Discussion On Property of Corrosion-resistance of Mixed Fly Ash High Performance Concrete in Shortage Curing 周阳,唐新军,李双喜,高强 (新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052) 要:按高性能混凝土配比方法配制不同掺量的Ⅱ级粉煤灰胶砂试件,分别与普通水泥胶砂试件和高抗硫酸盐水 泥胶砂试件进行抗硫酸盐侵蚀的对比试验。试验结果发现,在短龄期养护条件下,经过高浓度硫酸盐溶液的侵蚀浸泡, 不掺粉煤灰的普通胶砂试件和高抗硫水泥胶砂试件的抗蚀系数随侵蚀浸泡时间下降很快,在较短时间内就丧失了抗蚀 能力而掺有Ⅱ级粉煤灰的胶砂试件则维持较高的抗蚀系数,特别当Ⅱ级粉煤灰掺量达到60%时,其抵抗高浓度侵蚀溶 液侵蚀的效果显著。 关键词:高性能混凝土;Ⅱ级粉煤灰;短龄期养护抗硫酸盐侵蚀 文献标识码:A文 文章编号:1005-8249(2010)05-0020-03 ZHOU Yang TANG Xin-jun LI Shuang-xi GAO Qiang College of Water Conservancy and Civil Engineering ,Xinjiang Agricultural University ,Urumqi 830052 ,China ) Abstract :The contrast of capability of resisting sulfate corrode was tested among the differents volume of fly ash mortar specimens which sed method of high concrete mix configurations and ordinary Portland cement mortar specimens ,and high sulfate resistance Portland conerete mortar specimens .It was indicated that ,on the condition of the short curing time ,the anti eroaion coeffieients of mortar specimers of or - dinary Portland cement and high sulfate resistance Portland cement mortar specimens d...