北京建筑大学学报2025，Vol.41Issue(2)：81-91,11.DOI:10.19740/j.2096-9872.2025.02.10
聚氨酯混凝土应力吸收层层间处治措施对比评价研究
Comparative Evaluation of Interlayer Treatment Measures for Polyurethane Concrete Stress Absorbing Layers
摘要
Abstract
Polyurethane concrete stress-absorbing layer can effectively improve the occurrence of pavement diseases such as reflection cracks in composite pavements,and improve the overall stability and durability of pavement structure,but there is a lack of evaluation research on the interlayer treatment measures of polyurethane concrete stress-absorbing layer.In view of this,firstly,SBS modified emulsified asphalt,epoxy resin and two-component polymer DCP(Double Component Polymer)waterproofing binder were selected for material performance testing;secondly,three kinds of binders were coated with five grades of polyurethane concrete stress-absorbing layer and asphalt concrete paving layer and cement concrete underlayment to carry out the interlaminar treatment,and composite specimens were tested for interlaminar treatment.The composite specimens were subjected to interlayer diagonal shear and pull-out tests to compare and evaluate the bonding performance and to determine the optimal binder and its optimal coating amount;finally,the composite specimens coated with the optimal binders were evaluated for freeze-thaw cycle and accelerated loading durability,respectively.The results show that the best interlayer bonding materials are DCP waterproofing binder,and the best coating amount is 0.8 kg/m2;after four freeze-thaw cycle the composite specimens bonding performance attenuation rate is less than 20%,after 60 000 times accelerated loading test the bonding performance attenuation rate less than 15%,and it is still higher than the original value of the other two kinds of bonding materials without freeze-thaw and load cycle.The durability against freezing and thawing and the durability against loading are good.关键词
聚氨酯混凝土应力吸收层/层间黏结剂比选/斜剪试验/拉拔试验/最佳涂覆量/耐久性评价Key words
polyurethane concrete stress-absorbing layer/interlayer binder comparison/skewed shear test/Drawing test/Optimum coating volume/Evaluation of durability分类
土木建筑引用本文复制引用
朱子潇,王明玉,蔡硕果,王明涛,徐世法..聚氨酯混凝土应力吸收层层间处治措施对比评价研究[J].北京建筑大学学报,2025,41(2):81-91,11.基金项目
科技部国家"十四五"国家重点研发计划课题项目(2022YFB2601902) （2022YFB2601902）
国家自然科学基金联合基金重点项目(U223320040) （U223320040）
国家自然科学基金项目(51978034) （51978034）
北京学者基金项目(NO.067). （NO.067）
