The Analysis on the Mechanical Property and Durability of Carbon Fiber Reinforced Concrete

2011 ◽  
Vol 194-196 ◽  
pp. 869-872
Author(s):  
Su Qing Cao ◽  
Xiao Fei Xin ◽  
Mei Yang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

This paper mainly studies the influence pattern of mechanical properties and anti-permeability and carbonation etc durability after adding the carbon fiber into the concrete. Results show that appropriate amount fiber seep into concrete can improve its mechanical properties and durability.

Surface Modification of Carbon Fiber by Polymer Emulsions and Mechanical Property of Modified Carbon Reinforced Concrete

2011 ◽  
Vol 233-235 ◽  
pp. 2002-2005 ◽  
Author(s):  
Dong Lin ◽  
Chao Jin Wang ◽  
Feng Bo Dong ◽  
Song Lou ◽  
Chong Qi Shou
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Cement Mortar ◽  
Fiber Reinforced Concrete ◽  
Coal Pitch ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Coated Carbon

Four kinds of polymer emulsions were coated on the surface of coal pitch carbon fiber using atomized flow static coating method. The surface morphology of the carbon fiber after modification was analyzed by fluorescence microscope.The tensile strength of coated carbon fiber in the cement mortar and the mechanical property of the coated carbon fiber reinforced concrete were tested. The results showed that all the polymer emulsions were coated successfully on the surface of carbon fiber. The tensile strength of the coated carbon fiber in the cement mortar increased obviously, specially for the carbon fiber coated by meta chloride copolymer emulsion, whose tensile strength improved by 61%. The tensile strength of the coated carbon fiber reinforced concrete increased by 11%, the fracture energy increased by 47% and the max crack width increased by 18.5% when the content of the carbon fiber coated by meta chloride copolymer was 1.7 kg/m3.

Study on Dynamic Mechanical Properties of Carbon Fiber Reinforced Concrete

2020 ◽  
Vol 976 ◽  
pp. 180-185
Author(s):  
Gao Jie Liu ◽  
Er Lei Bai ◽  
Jin Yu Xu ◽  
Bo Xu Meng ◽  
Teng Jiao Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Fiber Reinforced Concrete ◽  
Peak Strain ◽  
Fiber Reinforced ◽  
Fiber Volume ◽  
Deformation Properties ◽  
Carbon Fiber Reinforced ◽  
The Impact

The strength and deformation properties of carbon fiber reinforced concrete under different fiber volume loadings under impact loading were studied by using the ɸ100 mm split Hopkinson pressure bar (SHPB) test system. The results show that after the carbon fiber is added, the stress-strain curve of the specimen shows the platform section at the peak stress. The strength and peak strain of the concrete under the impact load increase first and then decrease with the increase of the carbon fiber volume. Trend, when the carbon fiber volume is 0.2%, the impact mechanical properties of concrete are significantly improved.

scholarly journals Mechanical Properties of Nano SiO2 and Carbon Fiber Reinforced Concrete after Exposure to High Temperatures

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3773 ◽  
Author(s):  
Linsong Wu ◽  
Zhenhui Lu ◽  
Chenglong Zhuang ◽  
Yu Chen ◽  
Ruihua Hu
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
High Temperature ◽  
Carbon Fiber ◽  
Fiber Reinforced Concrete ◽  
Experimental Result ◽  
Fiber Reinforced ◽  
Nano Sio2 ◽  
Residual Properties ◽  
Carbon Fiber Reinforced

This study presents the key mechanical and residual properties after high-temperature of different Nano SiO2 carbon fiber-reinforced concrete (NSCFRC) mixtures. A total of seven NSCFRC mixtures incorporating 0%–0.35% of carbon fiber by volume of concrete and 0%–2% Nano SiO2 by weight of the binder were studied. The key mechanical properties such as compressive strength, tensile strength, and flexural strength of NSCFRC with 0.25% carbon fiber and 1% NS were 6.8%, 20.3%, and 11.7% higher than PC (0% CFs, 0% NS), respectively. Scanning Electron Microscopy (SEM) shows that Nano SiO2 reduced the internal porosity and increased the compactness of the concrete matrix. Furthermore, the experimental result demonstrates that NSCFRC can improve the mechanical properties of concrete after high-temperature and equations were obtained to describe the evolution of residual properties at elevated temperatures. Results suggested that the effect of carbon fibers on the residual properties of concrete after high-temperature is less than steel fiber and polypropylene fiber. It was also indicated that adding appropriate Nano SiO2 to concrete is an effective means to improve the residual performance after high-temperature.

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