RESEARCH PROGRESS ON DURABILITY AND LONG-TERM STABILITY OF UHPC MATERIALS
This paper reviews the research results on the durability and stability of UHPC materials.By analyzing the experimental data of frost resistance, chloride ion permeation resistance and carbonation resistance of UHPC, it is found that the single factor has little influence on UHPC durability, even negligible.Multi-factor coupling has a great influence on the compressive strength of UHPC, but it still maintains good durability.The compressive strength can be used as an evaluation index of UHPC durability, while the mass loss is not suitable.When UHPC suffers from multi-factor coupling, the role of invasive media and the rehydration of unhydrated cement are the main reasons that affect the durability of UHPC.It is critical to screen suitable UHPC durability evaluation index by focusing on the intrusion of external media and rehydration process.UHPC has attracted widespread attention from the civil engineering industry for its superior strength and durability.In order to fully reflect the ultra-high performance value of UHPC, it is necessary to match its excellent mechanical performance and durability through a complex working environment.At present, there are relatively few studies on the durability of UHPC subjected to multi-factor coupling.Scholars should carry out more such research, which lays a theoretical foundation for the promotion of UHPC applications in harsh engineering environments.
UHPC Durability Single factor Multi-factor coupling Evaluation index Rehydration
Mingzhe An Junyu Zhou Ziruo Yu Song Han Yue Wang
School of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing, China
国际会议
福州
英文
508-517
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）