基于弯沉法检测白加黑路面板底脱空的评价标准研究  

Study on Evaluation Standard of Reflection Crack Detection of White and Black Pavement Based on Deflection Method

作　　者：刘海军 LIU Haijun(Guangdong Jiaoke Testing Co., Ltd., Guangzhou 510420, China;Guangdong Hualu Transportation Technology Co., Ltd., Guangzhou 510550, China)

机构地区：[1]广东交科检测有限公司,广州510420 [2]广东华路交通科技有限公司,广州510550

出　　处：《交通科技》2021年第4期108-111,共4页Transportation Science & Technology

摘　　要：依据现行脱空判定标准不能判定白加黑路面反射裂缝是否由原水泥板底脱空造成,通过FWD的多级加载,在白加黑路面反射裂缝处进行弯沉检测,经注浆后取芯验证,认为通过增加荷载到70 kN和下降弯沉值至18(0.01 mm)作为改进后的判定标准能较好地体现工程实际情况。The current void judgment standard can't judge whether the reflection crack of white and black pavement is caused by void at the bottom of original cement slab,so an improved judgment standard is proposed.By FWD in white and black pavement reflection crack deflection testing with verification of coring after grouting,it is found that the improved judgment standard with increasing load to 7 kN and decreasing deflection value to 18(0.01 mm)can better reflect the actual situation of the engineering project.

关 键 词：白加黑路面 反射裂缝 FWD 脱空检测 

分 类 号：U416.2[交通运输工程—道路与铁道工程]