1. Department of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China 2. Wuzhou Engineering and Research Institute, Beijing 100055, China 3. Grace China Co., Ltd, Beijing Branch, Beijing 100176, China
Abstract:
In this paper the coefficient and law of the size effect of RPC were studied through experiments and theoretical analysis. The size-effect coefficients for the compressive strength of RPC are deduced through experiments. They indicate that RPC without fiber behaves quite the same as normal or high strength concrete. The size effect on compressive strength is more prominent in RPC containing fiber. Bazant's size effect formula of compressive strength applies to RPC. A formula is given to predict the compressive strength of cubic RPC specimens 100 mm on a side where the fiber dosage ranges from 0-2%.