中南大学学报（自然科学版）Issue(1)：136-142,7.DOI:10.11817/j.issn.1672-7207.2016.01.020
接缝修补材料对复合式路面AC层抵抗反射裂缝的试验研究
Experimental research on reflection-crack resistance of composite pavement with different joint repair materials
摘要
Abstract
Different joint restore strategies of the old cement concrete pavement were investigated to validate the availability on the reflection-crack resistance in the asphalt concrete(AC) layer through beam tests. In this research, three repaired materials, i.e. cement concrete (CC), engineered cementitious composite (ECC) and ECC-dowel combination were used. The crack development and flexural performance of the different composite beams were investigated by three-point-bending test and SEM. The results show that there are obvious differences in the development of the cracks between ECC and CC composite beams. ECC can effectively prevent the reflection crack due to its ductility characteristics as strain hardening and multipoint cracking. Bridging between the fibers in ECC matrix is crucial for the flexural performance of composite beam while dowel bar contribution can be neglected.关键词
复合梁/接缝修补/纤维增强水泥基复合材料/沥青混凝土加铺层/反射裂缝Key words
composite beam/joint repair/engineered cementitious composite materials/asphalt concrete(AC) layer/reflection crack分类
建筑与水利引用本文复制引用
张倩倩,吴德芬,何文,包鑫,魏亚..接缝修补材料对复合式路面AC层抵抗反射裂缝的试验研究[J].中南大学学报（自然科学版）,2016,(1):136-142,7.基金项目
云南省交通厅科技项目(2013(C)02)(Project(2013(C)02) supported by the Foundation of Science and Technology of Communications Department of Yunnan Province) （2013(C）
