Study of interfacial transition zones between magnesium phosphate cement and Portland cement concrete pavement

作     者：Fei Liu Baofeng Pan Changjun Zhou Ge Li Xiaocun Wang Jiaquan Li Fei Liu;Baofeng Pan;Changjun Zhou;Ge Li;Xiaocun Wang;Jiaquan Li

作者机构：Faculty of Infrastructure EngineeringDalian University of TechnologyDalian 116024China Tongren City Transportation BureauTongren 554300China Beijing Civil Aviation Design and Research Institute of China Design GroupBeijing 101318China 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2024年第11卷第3期

页      面：523-537页

核心收录：

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0802[工学-机械工程] 0823[工学-交通运输工程] 0702[理学-物理学] 

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(DUT20JC50,DUT17RC(3)006) the National Natural Science Foundation of China(51508137) the Research Center of Civil Aviation Airport Safety and Operation Engineering Technology(KFKT2021-01) 

主　　题：Portland cement concrete pavement Interfacial transition zone Magnesium phosphate cement Repair interface Nanoindentation Mechanical properties and characteristics 

摘      要：The Portland cement concrete pavement(PCCP)often suffers from different environmental distresses and vehicle load failure,resulting in slab corner fractures,potholes,and other *** repair has become one of the effective ways to open traffic *** this study,a novel type of rapid repair material,basalt fiber reinforced polymer modified magnesium phosphate cement(BFPMPC),is used to rapidly repair ***,the mechanical properties and characteristics of the repair interfaces which are named interfacial transition zones(ITZs)formed by BFPMPC and cement concrete are focused on as a decisive factor for the performance of the rapid *** changing trend of the elastic moduli was studied by nanoindentation experiments in the ITZs with the deconvolution analysis that the elastic moduli of certain kinds of substances can be *** experimental results show that the elastic modulus of ITZ-1 with a width of about20μm can be regarded as 0.098 times of the aggregate,and 0.51 times of the ordinary Portland cement(OPC)*** BFPMPC-OPC mortar ITZ has roughly the same mechanical properties as the ITZ between aggregate and BFPMPC.A multi-scale representative two-dimensional model was established by random aggregate and a two-dimensional extended finite element method(XFEM)to study the mechanical properties of the repair *** simulation results show that the ITZ formed by the interface of BFPMPC and OPC mortar and basalt aggregate is the most vulnerable to failure,which is consistent with the nano-indentation experimental results.