高弹模水泥沥青砂浆强度主要影响因素的研究  

Research on the Main Factors Influencing the Strength of High Elastic Modulus CAM

作　　者：黄直久[1] 曾兴华[2] 高治双[1] 王秀芬[1] 王发洲[2] 

机构地区：[1]中铁十二局集团有限公司,太原030024 [2]武汉理工大学硅酸盐材料国家重点实验室,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2013年第1期11-14,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：中央高校基本科研业务费专项资金资助(批准号:2010-Ⅱ-005)

摘　　要：研究了加料顺序、沥青水泥质量比(ma/mc)和砂水泥质量比(ms/mc)对高弹模水泥沥青砂浆(CAM)强度的影响.结果表明:将水泥、膨胀剂、砂和外加剂等原材料制备成干混砂浆,采用先加水,再加干混砂浆,最后加乳化沥青的加料顺序,能获得较高强度,且易于工程施工.随着ma/mc增加,CAM抗压强度逐渐下降,ma/mc由0.35增加到0.40,抗压强度下降尤为明显.同时得出最佳ms/mc值.通过优化配比,在ma/mc为0.35,ms/mc为1.1时,水胶质量比(W/B)为0.55时,CAM的1,7和28d抗压强度分别达3.06,11.55和17.0MPa.The effects of material adding order, the ratio of asphalt to cement（ma/mc）and the ratio of sand to cement（ms/me） on the compressive strength of high elastic modulus cement and asphalt mor- tar （CAM） are studied. Results show that higher compressive strength and more convenience for con- struction are acquired using the adding order in sequence of water, dry-mixed mortar, emulsified as- phalt. The dry mixed mortar is composed of cement, expansive agent, sand and admixture. The com- pressive strength decreases with the increase of rna/mc, and the dropping tendency is more obvious when ma/mc is from 0.35 to 0.40. And the optimum ms/mc is obtained. By optimizing mix design,1 d, 7 d, 28 d compressive strength of CAM reach 3.06 MPa, 11.55 MPa, 17.0 MPa respectively with ma/rno of 0.35, ms/mc of 1.1, W/B of 0.58.

关 键 词：水泥沥青砂浆 抗压强度 加料顺序 沥青水泥质量比 砂水泥质量比 

分 类 号：TU528.42[建筑科学—建筑技术科学]