应用旋转压实仪与嵌挤分析改良逐级填充法  

Study on the SGC and inter-lock analysis in improvement of stage filling

作　　者：郝广晋[1] 丁明科 任瑞波[1] 

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]日照市公路管理局,山东日照276826

出　　处：《山东建筑大学学报》2008年第1期6-10,共5页Journal of Shandong Jianzhu University

基　　金：山东省优秀中青年科学家基金项目(2007BS04025)

摘　　要：目前,关于半刚性基层级配的确定方法有很多,但大多有其难以克服的缺点与不足。传统逐级填充法采用的是重型击实、人工测量计算的方法确定级配,而且试件只做7d饱水无侧限抗压强度检验,不做嵌挤情况分析,因此,得到的级配数据不准确,也得不到可靠的骨架密实结构,从而导致逐级填充法无法在现实中得到有效的推广使用。本文首先提出在逐级填充试验中应用旋转压实仪的新的试验方法,并将合成集料的体积指标作为重要参数应用到嵌挤分析中,来检验合成集料形成骨架结构的可靠性。然后通过大量的实验与数据分析,论证了新型逐级填充法的优越性和可行性。There are many ways to determine the gradation of semi-rigid base, but most of them have defects. The traditional stage filling determines the gradation with heavy compaction test manually, together with the 7d unconfined compression strength test without inter-lock analysis. This paper puts forward a new method which employs the SGC in stage filling, makes a aggregate inter-lock analysis aiming at the gradation determination, and applies the volumetric index to the inter-lock analysis. Experiment and data analysis indicated that, compared with the traditional method, the proposed method has many advantages.

关 键 词：逐级填充 旋转压实 体积指标 嵌挤分析 

分 类 号：U416.223[交通运输工程—道路与铁道工程]