摘要
针对转运车使用与否两种工况,运用不同检测手段分别进行12、8.75和6.25m 3个不同摊铺宽度时的摊铺效果全幅检测及比较分析.对已碾压成型的沥青路面,采用激光纹理构造深度仪评价表面均匀性,采用无核密度仪评价内部均匀性;对松铺的热沥青混合料,采用红外热像仪拍摄红外热图,评价温度均匀性.检测结果表明,使用转运车时路面表面及内部无离析率均更大;内部离析评价结果和红外热像均表明,使用转运车改善离析的作用超过了一幅摊铺宽度偏大的影响,使用转运车可有效减小温度离析作用.
The spreading effects of the pavement with or without the use of transfer cars were tested in whole scope via various methods and were analyzed for the pavements with the spreading widths of 12, 8.75 and 6.25 m. The uniformity of the compacted asphalt pavement surface was then evaluated by using the laser texture depth tester, and the inner uniformity of the pavement was detected by using a non-nuclear density gauge. Moreover, the temperature uniformity of loose-paved hot asphalt mixture was measured by means of infrared thermography. It is found that the non-segregation rates of both the pavement surface and the interior increase with the use of transfer car. It is also revealed by interior segregation appraisal and infrared thermogram that the effect of transfer car in reducing the segregation even exceeds the effect of too-wide spreading , meaning that the transfer car can effectively reduce the temperature segregation.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第6期62-66,77,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
交通部西部交通建设科技项目(200631881216)
关键词
沥青混合料
转运车
无损检测
级配离析
温度离析
asphalt mixture
transfer car
nondestructive test
gradation segregation
temperature segregation
