泡沫沥青厂拌冷再生混合料级配优化设计  

Optimization Design of Mixture Gradation of Cold in-plant Recycling with Foamed Asphalt

作　　者：曾辉[1] 卢勇[1,2] 李豪[1,2] 

机构地区：[1]江苏省交通科学研究院股份有限公司,江苏南京211112 [2]新型道路材料国家工程实验室,江苏南京211112

出　　处：《现代交通技术》2013年第2期14-17,共4页Modern Transportation Technology

摘　　要：基于对泡沫沥青厂拌冷再生拌和机理的分析,提出了泡沫沥青冷再生混合料级配设计时RAP级配采用水洗法筛分是合适的。不同级配混合料的室内性能试验表明:4.75mm的通过率在45%以上时,混合料具有更优的强度和水稳定性能,较低的0.075mm的通过率(小于6%),并不意味着混合料性能不满足规范要求。在此基础上提出了适合工程实际的优化级配范围。Based on the analyses of mixing mechanism for cold in-plant recycling with foamed asphalt, this paper proposed that the gradation of RAP（ reclaimed asphalt pavement） using washing method is suitable when designing the gradation of cold in-plant recycling with foamed asphalt. Through indoor performance test in diverse gradation of mixture, it is indicated that 4.75 mm percent of pass in 45% or more mixture has better strength and water stability, low O. 075 mm percent of pass （less than 6% ） does not mean that mixture performance can not meet the requirements of specification. Based on this,it puts forward the optimized gradation range suitable for the engineering practice.

关 键 词：泡沫沥青 拌和机理 RAP级配 水洗法 混合料设计 水稳定性能 优化级配范围 

分 类 号：U414[交通运输工程—道路与铁道工程]