卤水侵蚀下水泥基灌浆料耐蚀性能试验研究  

Experimental study on corrosion resistance performance of cement-based grouting material under brine erosion

作　　者：寇佳亮[1,2] 任慧超 张浩博[1,2] Kou Jlallang;Ren Huichao;Zhang Haobo(School of Construction Engineering,Xi'an University of Technology,Xi'an 710048,China;State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University of Technology,Xi'an 710048,China;China West Construction North Co.,Ltd.,Xi'an 701116,China)

机构地区：[1]西安理工大学土木建筑工程学院,西安710048 [2]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048 [3]中建西部建设北方有限公司,西安701116

出　　处：《建筑结构》2018年第22期90-94,共5页Building Structure

基　　金：国家自然科学基金资助项目(51408487);中国住建部科学技术资助项目(2014-K2-037);中国博士后科学基金第56批面上资助项目(2014M562437);陕西省自然科学基金资助项目(2014JQ7292);陕西省教育厅专项科学研究计划资助项目(14JK1516);陕西省博士后科学基金资助项目,西安市建设科技项目(SJW2015-09);西安理工大学科学研究计划资助项目(118-211403)

摘　　要：通过卤水侵蚀下的水泥基灌浆料抗压性能试验,研究了水泥种类、水、水胶比、胶砂比、粉煤灰掺量、减水剂含量以及膨胀剂对水泥基灌浆料抗压强度的影响,以及不同情况下耐蚀系数的差异性。试验研究表明,在大量试验基础上配制的水泥基灌浆料初始流动度基本上都在300mm以上;在合适的配合比情况下,以普通硅酸盐水泥为主要成分的新型水泥基灌浆料在耐蚀性能上优于硫铝酸盐水泥;水胶比0. 35、粉煤灰掺量15%、聚羧酸减水剂含量1. 3%、胶砂比控制在1:1的情况下,配制出的水泥基灌浆料初始流动度为345mm,3d抗压强度接近43MPa,28d抗压强度接近69MPa,各龄期耐蚀系数均在0. 9以上,且具有良好抗卤水侵蚀性能。The compressive performance experiment of cement-based grouting material under brine erosion was carried out to study the influences of cement type,water,water-to-cement ratio,cement-to-sand ratio,fly ash content,water reducer content and expansive agent on compressive strength of cement-based grouting material,as well as the difference in corrosion resistance coefficient under different conditions.The experimental research shows that the initial fluidity of cement-based grouting material prepared on the basis of a large number of experiments is basically above 300 mm;in the case of suitable mix ratio,the new cement-based grouting material with ordinary Portland cement as the main component has better corrosion resistance performance than sulphoaluminate cement;when water-cement ratio is 0.35,fly ash content is 15%,polycarboxylate water reducing agent dontent is 1.3%,and the ratio of cement-to-sand ratio is controlled at 1:1,the initial fluidity of the cement-based grouting material is 345 mm,and the compressive strength at 3 days is close to 43 MPa, arid the compressive strength at 28 days is close to 69 MPa,and the corrosion resistance coefficient of each age is above 0.9,and it has good resistance to brine erosion.

关 键 词：水泥基灌浆料 卤水侵蚀 正交试验 抗压性能 耐蚀性能 

分 类 号：TU593[建筑科学—建筑技术科学]