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Study on an Improved Phosphate Cement Binder for the Development of Fiber-Reinforced Inorganic Polymer Composites

by Zhu Ding 1,*, Jian-Guo Dai 2,† and Sarfraz Muner 2,†
1
School of Civil Engineering, Shenzhen University, Shenzhen 518060, China
2
Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hong Kong, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Polymers 2014, 6(11), 2819-2831; https://doi.org/10.3390/polym6112819
Received: 28 July 2014 / Revised: 30 October 2014 / Accepted: 30 October 2014 / Published: 12 November 2014
Magnesium phosphate cement (MPC) has been proven to be a very good repair material for deteriorated concrete structures. It has excellent adhesion performance, leading to high bonding strength with old concrete substrates. This paper presents an experimental study into the properties of MPC binder as the matrix of carbon fiber sheets to form fiber-reinforced inorganic polymer (FRIP) composites. The physical and mechanical performance of the fresh mixed and the hardened MPC paste, the bond strength of carbon fiber sheets in the MPC matrix, the tensile strength of the carbon FRIP composites and the microstructure of the MPC matrix and fiber-reinforced MPC composites were investigated. The test results showed that the improved MPC binder is well suited for developing FRIP composites, which can be a promising alternative to externally-bonded fiber-reinforced polymer (FRP) composites for the strengthening of concrete structures. Through the present study, an in-depth understanding of the behavior of fiber-reinforced inorganic MPC composites has been achieved. View Full-Text
Keywords: magnesium phosphate cement (MPC); concrete; inorganic binder; fiber-reinforced polymer (FRP) magnesium phosphate cement (MPC); concrete; inorganic binder; fiber-reinforced polymer (FRP)
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MDPI and ACS Style

Ding, Z.; Dai, J.-G.; Muner, S. Study on an Improved Phosphate Cement Binder for the Development of Fiber-Reinforced Inorganic Polymer Composites. Polymers 2014, 6, 2819-2831.

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