THE SOLUTION FOR ADVERSE IMPACT OF CARBONATION ON CONCRETE 
BRIDGE DECK SLABS BT USING GFRP REINFORCEMENT

Abstract

Abstract:

As crucial structural components in bridge structures, bridge deck slabs played an important role in integral structural behaviours and transportation. However, with the increasing of ages in services, the durability of reinforced concrete bridge deck slabs was influenced significantly by carbonation. Recently, because of high strength, light weight and strong corrosionresistance, glass fiber polymer reinforcement bars (GFRP bars) were accepted by civil engineers. Due to the existence of compressive membrane action, it was shown that the structural behaviours of GFRP reinforced concrete bridge deck slabs with same reinforcement percentage were similar as those of steel reinforced concrete bridge deck slabs in nonlinear finite element analysis. Based on numerical analysis results, GFRP is available to be used as replacement of steel reinforcement. According the analysis of mechanism of concrete carbonation and material properties of GFRP, it was found that the durability of GFRP reinforced concrete bridge deck slabs was enhanced after the occurrence of carbonation in concrete structures, because carbonation reduced the permeability and porosity of concrete.

CLC Number:

TU377.9

ZHENG Yu, QIN Fu-Quan, LI Chun-Gong. THE SOLUTION FOR ADVERSE IMPACT OF CARBONATION ON CONCRETE
BRIDGE DECK SLABS BT USING GFRP REINFORCEMENT[J]. Fiber Reinforced Plastics/Composites, 2009, 209(4): 53-58.

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