碾压混凝土基层在高速公路改扩建工程中的应用  

Application of Roller Compacted Concrete Base in Expressway Reconstruction and Expansion Project

作　　者：许新水 XU Xinshui(Guangdong Jiaoke Testing Co.,Ltd.,Guangzhou 510550)

机构地区：[1]广东交科检测有限公司,广州510550

出　　处：《广东公路交通》2021年第6期18-23,共6页Guangdong Highway Communications

摘　　要：碾压混凝土(RCC)在高速公路改扩建工程中应用较少,且对新旧路面拼接尚无相关经验。通过实体工程应用对RCC基层的原材料、配合比、施工质量控制、强度特性等进行了统计与分析。结果表明,在高速公路改扩建工程中,RCC基层整体性较好,新旧路面接缝处的压实效果良好、芯样密实,RCC劈裂强度与抗弯拉强度的相关性较高。Roller Compacted Concrete(RCC)has been rarely used in expressway reconstruction and expansion projects,and there is no relevant experience in the connecting between new and old pavement.The raw materials,mix proportion,quality control and strength of RCC base course have been analyzed through solid engineering application.The practice has shown that in the highway reconstruction and expansion project,the integrity of RCC base is good,the compaction effect at the joints between new and old pavement is good,the core sample is dense,and the correlation between RCC splitting strength and flexural tensile strength is high.

关 键 词：高速公路 改扩建工程 碾压混凝土 弯拉强度 

分 类 号：U416.212[交通运输工程—道路与铁道工程]