Improvement of Performance for R.C. Beams Made from Recycled Aggregate by Using Non-Traditional Admixture

Authors: A. H. Yehia, M. M. Rashwan, K. A. Assaf, K. Abd el Samee

Abstract:

The aim of this work is to use an environmental, cheap; organic non-traditional admixture to improve the structural behavior of sustainable reinforced concrete beams contains different ratios of recycled concrete aggregate. The used admixture prepared by using wastes from vegetable oil industry. Under and over reinforced concrete beams made from natural aggregate and different ratios of recycled concrete aggregate were tested under static load until failure. Eight beams were tested to investigate the performance and mechanism effect of admixture on improving deformation characteristics, modulus of elasticity and toughness of tested beams. Test results show efficiency of organic admixture on improving flexural behavior of beams contains 20% recycled concrete aggregate more over the other ratios.

Keywords: Deflection, modulus of elasticity, non-traditional admixture, recycled concrete aggregate, strain, toughness, under and over reinforcement.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1093082

References:

[1] Abo Elfadl Mohammed Megahed. (2002), "High impermeable mortar for surface of water tanks”, Master Thesis, Faculty of Engineering, Assiut University, Egypt.
[2] A.K. Padmini, K.Ramamurthy and M.S .Mathews. (2009) "Influence of parent concrete on the properties of recycled aggregate concrete” Journal of Construction and Building Materials, Vol. 23, pp 829–836.
[3] A.Rahman, H.Hamdam and A. M. A. Zaidi. (2009) "Assessment of Recycled Aggregate Concrete” Journal of Modern applied science, Vol. 3, NO.10.
[4] A .Rao, K. N.Jha and S.Misra. (2007) "Use of aggregates from recycled construction and demolition waste in concrete” Journal of Resources Conservation and Recycling, Vol. 50, pp 71–81.
[5] A. Megahed Ahmed, M.M. Rashwan and Mostafa A.Razek.(2012), "Performance of a local economical additive on the cement mortar properties affected by aggressive environmental conditions”, Journal of Engineering Sciences, Assiut University.
[6] Egyptian Code of Practice for Design and Construction of Concrete Structures ECCS (203-2007).
[7] I.B. Topqu. (1997) "Physical and Mechanical Properties of Concretes Produced With Waste Concrete”, Journal of Cement and Concrete Research, Vol.27 NO .12, pp 1817-1823.
[8] K. H .Yang, H. S Chung and F. A. Ashour. (2008) "Influence of Type and Replacement Level of Recycled Aggregate on Concrete Properties” Journal of ACL Materials, Vol. 105 NO 3.
[9] L.Butter, J.S.West, S.L. Tighe (2011) "The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement”, Cement and Concrete Research Vol 41 (2011) pages 1037–1049.
[10] M.M. Rashwan and K.A. Assaf (2002) " Deformation performance for reinforced concrete beams using non-traditional Additions” , Journal of Engineering Sciences, Assiut University.
[11] Fatma Al Zahraa Ibrahim Abd El-Latif (2009) "Structural behavior of reinforced concrete beams with recycled concrete aggregate” Master Thesis, Faculty of Engineering, Cairo University, Egypt.
[12] Scancem Materials, Products for engineered concrete "Scanfiber- Flexural Toughness Testing”, Page 2, Japanese Standard (JSCE-SF4).
[13] Wai Hoe Kwan, Mahyuddin Ramli, Kenn Jhun Kam, Mohd Zailan Sulieman (2011) "Influence of the amount of recycled coarse aggregate in concrete design and durability properties”, Construction and Building Materials.
[14] www.nationmaster.com / encyclopedia.
[15] Yehia A. Hassanean, M.M. Rashwan, Kamal A. Assaf, Khaled A.A.(2013),” Influence of size and eplacement ratio of recycled concrete aggregate on concrete properties”, Journal of Engineering Sciences, Assiut University. Vol. 42 NO .1
[16] Yehia A. Hassanean, M.M. Rashwan, Kamal A. Assaf , Khaled A.A. (2014) " Improvement of concrete properties made from recycled concrete aggregate using Non-Traditional admixture” Journal of Engineering Sciences, Assiut University.