Experimental Study on Flexural Property of Reinforced Concrete Beams with Recycled Aggregate of Construction Waste

Abstract:

This paper presents the test results of 6 reinforced concrete beams with recycled aggregates of construction waste under flexure, the beams were made of two strength grade concrete of and with different recycled aggregate replacement rate. The results indicate: the ultimate bearing capacity of recycled concrete beams with natural aggregate concrete beams are almost the same, and can meet the requirements of chinese code; The cracking resistance of the reinforced recycled concrete beams is slightly less than that of the beams with natural aggregates, the influence of recycled aggregate replacement rate to cracking resistance is not obvious. Recycled concrete beam crack load the calculated value is greater than the measured value, should carry out the theoretical value adjustment. Reinforced concrete beams is one of concrete structures, its the most common and most important component, Study of flexural property of reinforced concrete for recycled concrete structure component in the popularization and application to have the important significance [. This paper presents the test results of 6 reinforced concrete beams with recycled aggregates of construction waste under flexure, the beams were made of two strength grade concrete of C30 and C40 and with different recycled aggregate replacement rate of 0%, 50% and 70%. These results may be as a reference for the application of the concrete with recycled aggregates of construction waste in engineering [2,3,.

• Periodical: Key Engineering Materials (Volume 517)
• Pages: 601-605
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.517.601
• Online since: June 2012
• Authors: Zhao Hua Du, Tong Hao, Li Xin Liu
• Keywords: Bearing Capacity, Cracking Resistance, Flexural Property, Recycled Concrete Beams, Replacement Rate

References

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[2] J.Z. Xiao, Y. Lan, The Study about Flexural Behavior of Recycled Coarse Aggregate Concrete Beams, J. Special Structures. 23 (2006) 9-12.

[3] Pooh C S, Kou S C, Lam L, Use of Recycled Aggregates in Molded Concrete Bricks and Blocks, J. Construction and Building Materials. 16(5) (2002) 281- 289.

DOI: 10.1016/s0950-0618(02)00019-3

[4] Kakizaki M, Harada M, Strength and Elastic Modulus of Recycled Aggregate Concrete, C. Proceedings of the Second International RILEM Symposium on Demolition and Reuse of Concrete and Masonry, Tokyo, (1988).

DOI: 10.1201/9781482271270-49