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采用石灰粉煤灰稳定碎石、水泥稳定碎石及水泥粉煤灰稳定碎石进行干缩试验,对比研究3种半刚性材料的累积干缩量、失水率、累积失水率和干缩系数4个性能指标;对3种半刚性材料进行温缩试验,通过温缩系数对比,分析其温缩特性;通过抗压回弹模量试验和抗弯拉回弹模量试验,对比研究了其力学特性;对3种半刚性材料进行疲劳试验和冲刷试验,对比分析其耐久性。研究结果表明:3种半刚性材料干缩性能的优劣顺序为:石灰粉煤灰稳定碎石、水泥粉煤灰稳定碎石、水泥稳定碎石;温缩性能的优劣顺序为:水泥粉煤灰稳定碎石、石灰粉煤灰稳定碎石、水泥稳定碎石;抗冲刷性能的优劣顺序为:石灰粉煤灰碎石、水泥粉煤灰稳定碎石、水泥稳定碎石;水泥粉煤灰稳定碎石的抗疲劳性能优于水泥稳定碎石。
The dry shrinkage test of lime-flyash stabilized macadam, cement stabilized macadam and cement fly ash stabilized macadam was carried out. The effects of three kinds of semi-rigid materials on the cumulative dry shrinkage, water loss, cumulative water loss and dry shrinkage Coefficient of four performance indicators; three kinds of semi-rigid materials were subjected to temperature shrinkage test, through the comparison of the temperature coefficient of contraction, the analysis of its thermal shrinkage characteristics; through the compressive resilience modulus test and flexural modulus of elasticity test, the comparative study The mechanical properties of the three kinds of semi-rigid materials fatigue test and erosion test, comparative analysis of its durability. The results show that the order of shrinkage shrinkage of three kinds of semi-rigid materials is as follows: lime fly ash stabilized macadam, cement fly ash stabilized macadam and cement stabilized macadam; the order of temperature shrinkage performance is cement powder Coal ash stabilized macadam, lime fly ash stabilized macadam and cement stabilized macadam; the order of anti-scouring performance is limestone, macadam, cement stabilized macadam; cement powder The fatigue resistance of fly ash stabilized macadam is better than that of cement stabilized macadam.