10℃下水泥基材料抗硫酸盐侵蚀性能试验研究  

Research on sulfate resistance of cement based materials at 10 ℃

作　　者：谢松林[1] 王起才[1] 代金鹏[1] 王云天[1] 郭玉柱[1] 余小龙 XIE Songlin1, WANG Qicai1, DAI Jinpeng1, WANG Yuntian1, GUO Yuzhu1, YU Xiaolong2(1.National and Provincial Joint Engineering Laboratory of Road and Bridge Disaster Prevention and Control, Lanzhou Jiaotong University, Lanzhou 730070, China; 2.Gansu Province Planning-survey and Design Institute of Communication Co., Ltd.,Lanzhou 730000, Chin)

机构地区：[1]兰州交通大学道桥工程灾害防治技术国家地方联合工程实验室,甘肃兰州730070 [2]甘肃省交通规划勘察设计院股份有限公司,甘肃兰州730000

出　　处：《混凝土》2018年第3期44-47,共4页Concrete

基　　金：长江学者和创新团队发展计划滚动支持(IRT_15R29)

摘　　要：研究了不同水泥品种、矿物掺合料对水泥基材料在10℃下抗硫酸盐侵蚀的性能的影响,分别采用普通硅酸盐水泥、中抗硫水泥以及加入矿粉与活性掺合料X的水泥砂浆试件,测试各试样在(10±1)℃的3%Na_2SO_4溶液中浸泡后的强度变化情况,综合考虑强度与抗蚀系数对砂浆抗硫酸盐侵蚀性能进行评价。结果表明:在10℃下砂浆试样的强度普遍低于常温环境下,砂浆抗硫酸盐侵蚀性能15%矿粉+3%X>15%矿粉+1%X>中抗硫水泥>普通硅酸盐水泥。加入矿物掺合料明显改善了水泥砂浆抗硫酸盐侵蚀性能,并且活性掺合料X的含量越高效果越明显。The effects of cement types and mineral admixtures on the performance of cement-based materials against sulfate attack at 10 -C were studied.Ordinary portland cement, medium sulfiar-resistant cement and slag with active mineral admixture X cement mortar samples were prepared.Mortar samples were stored in 3%Na2SO4 sulfate solution at （10±1）℃ ,and their strength developments were measured. Sulfate resistance of mortar samples was evaluated by considering the mortar strength and corrosion resistance.The results showed that the strength of the mortar samples at 10℃ was lower than that of the normal temperature environment,the mortar resistance to sulfate attack was 15% slag＋3% X〉 15% slag＋ 1% X〉medium sulfur-resistant cement〉ordinary portland cement.Addition of mineral admixture improved the sulfate resistance of cement mortar, and the better the sulfate resistance, the more the addition of active mineral admixture X.

关 键 词：低温 水泥基材料 硫酸盐侵蚀 矿物掺合料 

分 类 号：TU528.01[建筑科学—建筑技术科学]