SBS改性沥青再生废旧聚氨酯混凝土的配制及旧料掺量的影响评价  

Preparation of SBS Modified Asphalt Recycled Waste Reclaimed Polyurethane Concrete and Impact Evaluation of Old Material Content

作　　者：梁恒健 毋虹亮 朱子潇 马昊天 徐世法[1] LIANG Hengjian;WU Hongliang;ZHU Zixiao;MA Haotian;XU Shifa(Beijing Urban Transportation Infrastructure Engineering Technology Research Center,Beijing University of Civil Engineering and Architecture,Beijing 100044;Beijing South-to-North Water Diversion Mainline Management Office,Beijing Water Authority,Beijing 100081)

机构地区：[1]北京建筑大学北京市城市交通基础设施建设工程技术研究中心,北京100044 [2]北京市水务局北京市南水北调干线管理处,北京100081

出　　处：《北京建筑大学学报》2024年第2期105-114,共10页Journal of Beijing University of Civil Engineering and Architecture

基　　金：“十四五”国家重点研发计划项目(2022YFB2601902);国家自然科学基金项目(51978034);国家自然科学基金-联合基金重点项目(U223320040);北京学者基金项目(067)。

摘　　要：聚氨酯混凝土是一种新型铺装材料,研究废旧聚氨酯混凝土的再生利用对该材料的推广应用意义重大。首先,通过聚氨酯混凝土室内模拟老化制备了RPC;其次,选用0%、25%、30%、35%、40%、45%和50%7种RPC掺配比例配制了AC-13型SBS改性沥青再生废旧聚氨酯混凝土;再次,对不同RPC掺量下的SBS改性沥青再生RPC进行了路用性能评价;最后,对SBS沥青-石灰岩、SBS沥青-老化聚氨酯和老化聚氨酯-石灰岩3种界面的黏附性能进行了测试,对比分析了RPC对路用性能影响的成因。结果表明,除50%RPC掺量的SBS改性沥青再生RPC外,其余6种RPC掺量的均满足相关技术要求,且随RPC掺量的增加,其高温性能减弱而低温性能和水稳定性增强;SBS沥青-老化聚氨酯和老化聚氨酯-石灰岩的界面黏附性能优于SBS沥青-石灰岩。Polyurethane concrete is a new type of paving material.Research on the recycling of reclaimed polyurethane concrete is of great significance to the promotion and application of this material.Firstly,reclaimed polyurethane concrete is prepared by simulating the aging of polyurethane concrete indoors;secondly,seven kinds of reclaimed polyurethane concrete ratios of 0%,25%,30%,35%,40%,45%and 50%are used to formulate the AC-13 SBS modified asphalt recycled reclaimed polyurethane concrete;thirdly,the road performance of SBS modified asphalt recycled reclaimed polyurethane concrete with different reclaimed polyurethane concrete ratios is evaluated;lastly,the adhesive properties of the three kinds of interfaces,SBS asphalt-limestone,SBS asphalt-aging polyurethane and aging polyurethane-limestone,are tested,and the reasons for the impact of reclaimed polyurethane concrete on the road performance are analyzed comparatively.The results show that,in addition to 50%reclaimed polyurethane concrete ratio of SBS modified asphalt recycled reclaimed polyurethane concrete,the remaining six kinds all meet the relevant technical requirements,and with the increase of reclaimed polyurethane concrete ratio,its high-temperature performance is weakened while the low-temperature performance and water stability enhancement;SBS asphalt-aging polyurethane and aging polyurethane-limestone interfacial adhesion performance is better than that of SBS asphalt-limestone.

关 键 词：道路工程 RPC SBS改性沥青再生RPC RPC掺量 界面黏附 

分 类 号：TU27[建筑科学—建筑设计及理论] U414[交通运输工程—道路与铁道工程]