地聚物砂浆半柔性路面材料的路用性能分析

将地聚物砂浆和水泥砂浆作为灌浆材料制备半柔性路面,在灌注率分别为85%,90%,95%的条件下进行马歇尔稳定度、高温车辙、冻融劈裂和低温抗裂试验,以评价两者的路用性能.结果表明:当灌注率为90%时,两者的路用性能最佳;相较于水泥砂浆半柔性路面材料,地聚物砂浆半柔性路面材料的马歇尔稳定度明显提升,高温稳定性与水稳定性更优,但低温稳定性不佳;地聚物砂浆推荐配合比的矿灰比为0.43,碱激发剂掺量为14%,水玻璃模数为1.5,水胶比为0.45,砂胶比为0.2.

Road Performance of Geopolymer Mortar Semi-Flexible Pavement Materials

Semi-flexible pavement were prepared with geopolymer mortar and cement mortar as grouting materials. Marshall stability, high temperature rutting, freeze-thaw splitting and low temperature crack resistance tests were conducted to evaluate the road performance of both mortars under the conditions of 85%, 90% and 95% grouting rates. The results show that when the grouting rate is 90%, both road performances are best. By comparison with cement mortar semi-flexible pavement materials, the Marshall stability of geopolymer mortar semi-flexible pavement materials is significantly improved, the high temperature stability and water stability performance are upgraded, but the low temperature stability is degraded. The geopolymer mortar recommended mineral cement ratio is 0.43, alkali activator content is 14%, water glass modulus is 1.5, water binder ratio is 0.45, sand binder ratio is 0.2.