石灰岩风化料改良高液限粘土路用性能试验研究

为合理利用高液限粘土作为路堤填料,降低其收缩开裂性能,采用在高液限粘土中掺加不同剂量的石灰岩风化料,探讨石灰岩风化料掺量对高液限粘土路用性能的影响。试验表明,掺拌石灰岩风化料的高液限粘土,液限塑性指数降低,密实度增加,具有良好的路用性能,能满足设计规范对路堤填料的要求,并以掺量为30%时效果最佳。

Experimental Study on Pavement Performance of High Liquid Limit Clay Improved by Limestone Weathered Material

In order to reasonably use high liquid limit clay as the embankment filling and reduce its shrinkage cracking resistance,different amount of limestone weathered material is added into high liquid limit clay to discuss the influence of mixing proportion of limestone weathered material on pavement performance of high liquid limit clay.The result shows that high liquid limit clay mixed with limestone weathered material has smaller liquid plasticity index and better compactness,with good pavement performance,which can satisfy the requirement of design specification for embankment filling.The proportion of 30% receives the best effect.