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.
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)
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
cement and asphalt mortar
compressive strength
adding order
the ratio of asphalt to ce- ment
the ratio of sand to cement
