Experimental Study on Flexural Behavior of Recycled Coarse Aggregate Concrete Beam


Article Preview

In order to investigate flexural behavior of simply-supported beam using recycled coarse aggregate concrete, the difference of the component normal section stress distortion performance and failure characteristic between the recycled concrete beam and the normal concrete beam is researched. The approaches of testing the flexural behavior of 6 recycled course aggregate beams with the same section size, different replacement ratio of recycled coarse aggregate (0%, 50%, 70% and 100%) and different percentage reinforcement (0.68%, 0.89% and 1.13%). Based on the experimental the following conclusions are draw. There are also 4 phases of elasticity, cracking, yield and ultimate during the stress course of recycled concrete beam component normal section stress; the average strain measured on cross-section obliges to the plane section assumption; the characteristics of stress distortion and destruction of recycled concrete beam are basically the same as those of the normal concrete beam. Under same conditions, the cracking moment and the ultimate flexural carrying capability of recycled concrete beam is almost the same as those of normal concrete beam. The deformation of recycled concrete beam is larger than concrete beam. The conclusion of the paper is that it is still feasible to calculate the ultimate bending moment, cracking moment, and the biggest crack width of recycled concrete beam according to the formula in China Concrete Structure Design Code, but the deflection formula needs to be adjusted.



Edited by:

Honghua Tan




W. H. Bai and B. X. Sun, "Experimental Study on Flexural Behavior of Recycled Coarse Aggregate Concrete Beam", Applied Mechanics and Materials, Vols. 29-32, pp. 543-548, 2010

Online since:

August 2010




[1] E. MARSH. Civil infrastructure system material research support at the national science foundation. Cement and Concrete Composite, 2003, 25(6): 575-686.

[2] Chinese institute of building material industry: Green building materials and building materials green . China Chemical in Dusty Press,(2003).

[3] L.B. TOPCU: Physical and mechanical properties of concretes produced with wasted concrete. Cement and Concrete Research, 1997, 27(12): 1817-1823.

DOI: https://doi.org/10.1016/s0008-8846(97)00190-7

[4] R M. SALEM: Strength and durability characteristics of recycled aggregate concrete. Knoxville University of Tennessee, 996.

[5] JZ Xiao; JB Li; ZP Sun: Study on compressive strength of recycled aggregate concrete, Journal of Tongji University, 2004, 32(12): 1558-1561.

[6] WH. Bai, JL. Zhang: Mixing proportion design of recycled aggregate concrete on the basis of free water cement ratio, Journal of Shaoxing University . 2007, 27(9): 52-55.

[7] National standards of P.R. C GB 50152-92: Standard methods for testing of concrete structures.