Strengthening concrete using phosphate cement-based fiber-reinforced inorganic composites for improved fire resistance

Zhu Ding, Mu Rui Xu, Jian Guo Dai, Bing Qin Dong, Ming Jie Zhang, Shu Xian Hong, Feng Xing

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)

Abstract

Fiber reinforced polymer (FRP) composites have been widely used for strengthening of concrete structures for many years. A critical concern for the FRP strengthening technology is the fire resistance. In this study, phosphate cement-based fiber-reinforced inorganic polymer (FRiP) composites were used to replace conventional fiber-reinforced polymer (FRP) composites to strengthen concrete beams for improved fire resistance. The performances of FRiP composites, FRiP-to-concrete interfaces and FRiP-strengthened concrete beams were examined both before and after fire exposure. It was demonstrated that the phosphate cement-based FRiP composites can significantly enhance the mechanical strength of the concrete beams. In addition, they exhibit much improved fire resistance as compared to the epoxy-based FRP composites.

Original languageEnglish
Pages (from-to)755-764
Number of pages10
JournalConstruction and Building Materials
Volume212
DOIs
Publication statusPublished - 10 Jul 2019

Keywords

  • Concrete beam
  • Fiber reinforced inorganic polymer (FRiP) composites
  • Fiber-reinforced polymer (FRP) composites
  • Fire resistance
  • Phosphate cement
  • Strengthening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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