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[9000419.] رقم البحث : 9000419 - |
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Behavior of Recycled Self-Compacting Concrete / |
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قطاع الدراسات الهندسية / الهندسه الميدانيه |
| تخصص البحث : الهندسه الميدانيه |
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Engineering Research Journal \ / Vol. 36, No. 3 - July 2013 |
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منير محمد كمال ( prof_mounir@yahoo.com - 01065641276 ) |
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Self-compacted concrete; Red brick; Ceramic; Recycled materials; Flexural strength |
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The effect of recycled materials as a recycled aggregate (crushed red brick and crushed ceramic) on the fresh and hardened properties of Recycled Self-Compacting Concrete (RSCC) was investigated. Recycled materials were used to replace coarse aggregate at different ratios of 25%, 50%, 75% and 100% to produce RSCC mixes. Twenty one concrete mixes were cast and test to fulfill the aim of this paper. This paper aimed at studying the properties of RSCC mixes and evaluating the behavior of RSCC beams under flexural loads. Nine tested loading simply supported concrete beams were tested in flexure. The fresh properties of RSCC were evaluated using slump flow, J-ring and V-funnel tests. Compressive strength, splitting tensile strength and flexural strength were performed in order to investigate mechanical properties. The density for different mixes was evaluated. The behavior of the tested beams was investigated with special attention to the deflection under different stages of loadings, initial cracking, cracking pattern, and ultimate load. The average of the compressive strength decreased by 34% and 26% for the mixes with crushed red break and ceramics, respectively compared to that of control mix was observed. In addition, the density for the mixes with crushed red brick decreased by 14 % compared to that of control mix. The obtained results presented the properties of this concrete were expected from a structure point of view, and that the recycled coarse aggregates can successfully be used for making of SCC. |
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