초록

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Abstract ▼ AI-Helper

The fast track repair using very early strength latex modified concrete(VESLMC) has been used at repair jobs of concrete bridge deck overlay by rephrase for eight (8) to ten (10) hours. A very old damaged bridge could not recover load-carrying capacity by a simple repair work. A reinforcement such a...

The fast track repair using very early strength latex modified concrete(VESLMC) has been used at repair jobs of concrete bridge deck overlay by rephrase for eight (8) to ten (10) hours. A very old damaged bridge could not recover load-carrying capacity by a simple repair work. A reinforcement such as rebar or wire mesh is necessary for strengthening the load carrying capacity of the damaged structure in addition to the simple repair work. However, this additional procedure of one (1) to two (2) hours for reinforcement could impair fast track repair. The purpose of research was to develop a steel fiber reinforced VESLMC (SFR VESLMC) in order to apply at the damaged structure without an additional strengthening procedure. The material properties and flexural toughness of SFR VESLMC were evaluated by testing a series of samples. The results were as follows: The optimized steel fiber content of 30mm long was to be 10% by unit cement content from a series of flexural toughness tests.

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