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

Polymers

Zhu Ding¹  Jian-Guo Dai² 

[1] School of Civil Engineering, Shenzhen University, Shenzhen 518060, China;Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hong Kong, China; E-Mails:

关键词: magnesium phosphatecement (MPC);    concrete;    inorganic binder;    fiber-reinforced polymer (FRP);   

DOI  :  10.3390/polym6112819

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.