Experimental Study on the Shearing Property of Equal Strength Recycled Coarse Aggregate Concrete

For the purpose of studying the difference between recycled concrete and ordinary concrete on shearing property under the circumstance of equal strength, nine recycled concrete beams, which have equal altitude and varying width, have been produced by using different replacement rates of 0%, 50% and 100% respectively to test their shear performance. The differences between recycled concrete and ordinary concrete on shearing strength, shearing strain and constitutive relation were analyzed in this paper. The study indicates that with the same compressive strength, there is only a slight difference between recycled concrete and ordinary concrete on shearing strength. The shearing strength of the recycled concrete is similar to the tensile strength of the ordinary concrete. Recycled concrete's peak value increases as shearing strength increases. The stress-strain curve of recycled concrete is similar to that of the ordinary concrete. Its shear modulus increases when shearing strength increases.