矿物掺合料对混凝土中氯离子传输规律影响的试验研究  

Study on Impact of Mineral Addition to Transmission Regularity of Chloride Ion in Concrete

作　　者：马志鸣 赵铁军[2] 王本臻[2] 

机构地区：[1]青岛市市政工程设计研究院有限责任公司,青岛市266100 [2]青岛理工大学,青岛市266033

出　　处：《公路》2014年第2期164-167,共4页Highway

基　　金：国家重点基础研究发展计划(973项目);项目编号2009CB623203;国家自然科学基金发展项目;项目编号50739001

摘　　要：通过毛细吸盐试验,研究试件在毛细吸收作用下,粉煤灰、矿粉等矿物掺合料及其掺入量对混凝土中氯离子传输规律的影响。试验结果表明,保持水胶比不变,向混凝土中掺入一定比例的粉煤灰和矿粉(等量替代原混凝土中水泥质量)可以有效地提高试件的抗氯离子侵入性能,当粉煤灰掺入量为30%、矿粉掺入量为50%时混凝土具有较好的抗氯离子侵蚀性能。Capillary suction salt test are conducted to evaluate the impacts of such additions as fly-ash and mineral powder as well as their mixing ratio to the transmission regularity of chloride ion in the concrete specimen. The result shows that if the water binder ratio is fixec, mixing certain proportions of fly-ash and mineral powder in the concrete （which quantities shall be equal with cement quantity in original concrete） can effectively improve resistance of corrosion chloride ion. The concrete will have better resistance when the content of fly-ash reaches 30 percent and the mineral powder content reaches 50 percent.

关 键 词：粉煤灰 矿粉 氯离子 耐久性 

分 类 号：U414.03[交通运输工程—道路与铁道工程]