基于CBR法的旧水泥混凝土路面再生集料级配碎石级配控制范围  

Grading Control of Recycled Aggregate and Crushed Stone in Old Cement Concrete Pavement based on CBR Method

作　　者：辛长征 XIN Changzheng(Guangdong Hualu Transport Technology Co., Ltd., Guangzhou, 510420)

机构地区：[1]广东华路交通科技有限公司,广州510420

出　　处：《广东公路交通》2021年第4期79-82,共4页Guangdong Highway Communications

摘　　要：为确定旧水泥混凝土路面再生集料级配碎石关键筛孔控制范围,在分析各国级配碎石关键筛孔控制范围的基础上,以CBR试验方法为测试手段,分析了集料4.75mm通过率、最大粒径和0.075mm通过率等因素对CBR值的影响。结果表明:最大粒径为31.5mm时CBR值较好,随着4.75mm和0.075mm通过率的增加,CBR值均呈现出先增加后减小的趋势。提出了旧水泥混凝土路面再生集料级配碎石级配控制范围的建议。In order to determine the key sieve control range of recycled aggregate Graded Macadam for old cement concrete pavement,being based on analysis on key sieve control range of Graded Macadam in various countries,the influence of the maximum particle size,aggregate passing rate of 4.75mm and 0.075mm on the test results has been studied by using CBR test method.The results have shown that:when the maximum particle size is 31.5mm,the CBR value is better,with the passing rate of 4.75mm and 0.075mm.According to the experimental results,in this paper,suggestions on the control range of recycled aggregate gradation and crushed stone gradation of old cement concrete pavement have been proposed.

关 键 词：CBR 旧水泥混凝土路面 再生集料 级配碎石 级配控制 

分 类 号：U416.216[交通运输工程—道路与铁道工程]