温拌及热拌沥青混合料降温特性分析  

Analysis of Temperature-Dropping Characteristics of Warm-Mix Asphalt and Hot-Mix Asphalt

作　　者：侯曙光[1] 

机构地区：[1]南京工业大学交通学院,南京市210009

出　　处：《公路》2011年第10期188-191,共4页Highway

基　　金：中交寒区道路工程重点实验室开放基金;项目编号200904;南京工业大学学科基金;山东省交通科技计划项目;项目编号2007Y02

摘　　要：为研究热拌及温拌沥青混合料降温特性,采用车辙板试件进行试验,分别在110℃和130℃初始温度条件下,测试热拌沥青混合料、"路博"温拌沥青混合料和"Sasobit"温拌沥青混合料的降温特性,试验结果表明:混合料初始温度越高,降温速率越快,初始温度为110℃和130℃的车辙板经25min后温度接近,分别为66℃和68℃;不同类型混合料降温速率不同,当初始温度为110℃时,热拌混合料降温最快,"Sasobit"温拌沥青混合料降温速率居中,"路博"温拌混合料降温速率最小,经35min后,3种沥青混合料的温度损失分别为53℃、51℃和49℃。In order to research on the temperature-dropping characteristics of warm-mix and hot-mix asphalt,in this paper some rutting test panels are used as specimens to determine the temperature-dropping characteristics of hot-mix asphalt（HMA）,warm-mix asphalt（WMA） with warmly mixing agent ＂LoBo＂ and warm-mix asphalt with warmly mixing agent ＂Sasobit＂ under the conditions with initial temperatures of 110℃ and 130℃.The test results indicate that the higher initial temperature is,the higher temperature-dropping rate is.After 25 min the temperatures of rutting test panels with initial temperatures of 110℃ and 130℃ are close to each other and are in 66℃ and 68℃ separately.The temperature-dropping rates of different types of mixtures are not the same.When the initial temperature is in 110℃,the tempeature-dropping rate of hot-mix asphalt is highest,the temperature-dropping rate of warm-mix asphalt added with ＂Sasobit＂ is in the middle,and the temperature-dropping rate of warm-mix asphalt added with ＂LuBo＂ is lowest.After 35 min,the temperatures of the three types of asphalt mixtures have fallen by 53℃,51℃ and 49℃ separately.

关 键 词：道路工程 温拌沥青混合料 初始温度 降温速率 

分 类 号：U414.701[交通运输工程—道路与铁道工程]