Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22442
Title: Comparative study of different cement-based inorganic pastes towards the development of FRIP strengthening technology
Authors: Dai, JG 
Munir, S
Ding, Z
Keywords: Concrete structures
Fiber-reinforced inorganic polymer (FRIP)
Geopolymer (GP)
Magneisum phosphate cement (MPC)
Magnesium oxychloride cement (MOC)
Polymer-modified mortar (PMM)
Strengthening
Issue Date: 2014
Publisher: Asce-Amer Soc Civil Engineers
Source: Journal of composites for construction, 2014, v. 18, no. 3, a4013011 How to cite?
Journal: Journal of Composites for Construction 
Abstract: The development of fiber-reinforced inorganic polymer (FRIP) composites for strengthening reinforced concrete (RC) structures has become an active field of research in recent years. Compared with fiber-reinforced polymer (FRP) strengthening systems, a FRIP strengthening system possesses improved fire resistance but its performance depends largely on appropriate inorganic paste selection. This paper presents a comparative study of four typical inorganic pastes, made from the following: (1) magnesium phosphate cement (MPC), (2) magnesium oxychloride cement (MOC), (3) geopolymer (GP) cement (i.e., alkali-activated slag cement), and (4) polymer-modified mortar (PMM). The aim was to investigate their performance both as a matrix and bonding adhesive for FRIP strengthening systems. The evaluated performance included the workability and mechanical properties of inorganic pastes, the bonding strength of these pastes with both a concrete substrate and dry fiber sheets, the tensile properties of the formed FRIP composites, and the flexural strength of FRIP-strengthened concrete beams. The microstructures of the four types of inorganic matrix and the fiber-to-matrix interface were also examined. The MPC-based and MOC-based inorganic pastes exhibit similar structural performance as commercially available PMM and are well-suited for the development of FRIP strengthening technology. Geopolymer seems to be the most brittle among the four studied inorganic pastes.
URI: http://hdl.handle.net/10397/22442
ISSN: 1090-0268
DOI: 10.1061/(ASCE)CC.1943-5614.0000420
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