摘要
针对广西南宁-友谊关高速公路宁明膨胀性泥页岩的填料特性,进行了不同击实功和不同含水量条件下的击实、承载比(CBR)和回弹模量等系统的室内试验研究.研究结果表明,膨胀性泥页岩填料的承载比(CBR)和回弹模量主要受制样含水量及干密度的控制;CBR峰值含水率大于最佳含水率,与其天然含水量极为接近,位于稠度1.07附近.并对宁明膨胀性泥页岩填料的合理使用范围及有效的施工压实参数进行了分析.
In order to study the filler characteristics of Ningming expansive shale, compaction tests, CBR tests, resilient modulus tests on the expansive shale were carried out under the conditions with different compactive efforts and moisture content. The results have shown that the CBR and resilience modulus of expansive shale were mainly controlled by moisture content and dry density. The moisture content with the biggest CBR was more than the optimum, and was very close to its natural moisture content which was near the consistency of 1.07 . At last, the appropriate range was analyzed by using the Ningming expansive shale as filler and effective compressing parameter for construction was also analyzed.
出处
《长沙理工大学学报（自然科学版）》
CAS
2006年第4期14-17,共4页
Journal of Changsha University of Science and Technology:Natural Science
基金
交通部西部建设科研资助项目(2002318000)
关键词
膨胀性泥页岩
填料
压实
expansive shale
filler
resilient modulus
