论文部分内容阅读
该文对泡沫沥青处治材料的强度参数和最佳泡沫沥青含量进行了研究。通过掺加不同含量的泡沫沥青和水泥/石灰稳定旧料,分别制成直径为100 mm和150 mm的试件进行间接拉伸试验(ITS)和无侧限抗压强度试验(UCS),并对两种试验结果的相关关系进行分析;对比了由不同强度参数确定的泡沫沥青混合料的最佳沥青含量;根据建立的不同强度试验结果的相关联系,对泡沫沥青稳定材料进行了分类。结果表明,无侧限抗压强度不是泡沫沥青稳定材料分类的关键参数,采用直径为150 mm试件的浸水后间接拉伸强度来考察材料的水敏感性也是不必要的。
In this paper, the strength parameters of foamed bitumen treated materials and the optimum foamed bitumen content were studied. The specimens with diameters of 100 mm and 150 mm were respectively subjected to ITS and UCS by blending different content of foamed bitumen and cement / lime as raw materials. The correlation between the two test results was analyzed. The optimal asphalt content of foamed asphalt mixture determined by different strength parameters was compared. Based on the correlation between different strength test results, the foamed asphalt stabilized materials were classified. The results show that unconfined compressive strength is not a key parameter in the classification of foamed bitumen stabilized materials. It is not necessary to investigate the water sensitivity of materials using the indirect tensile strength after soaking of 150 mm diameter specimens.