Flexural behavior of reinforced high
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This document summarizes a study that investigated the flexural behavior of high-performance reinforced concrete beams made with sandstone aggregates and silica fume. The beams had compressive strengths of 74-78 MPa and reinforcement ratios of 1.34-3.14%. Testing found the beams' ultimate moments were 14-30% higher than BS 8110 predictions and 3-9% higher than ACI 318 predictions. However, the beams experienced excessive deflection under service loads due to the sandstone aggregates' lower stiffness. Cracks under service loads were within acceptable limits. The addition of silica fume and sandstone filler increased flexural stiffness and safety against failure. The results showed it is possible to produce high-performance
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Flexural behavior of reinforced high
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- 2. Investigation on the flexural behaviour of high-performance reinforced concrete beams using sandstone aggregates P. , S. Kumar and Md. Abdul Mannan, and John J. Kurian, and H. Achuytha, (2007) Investigation on the flexural behaviour of high-performance reinforced concrete beams using sandstone aggregates. Building and Environment, 42 (7). pp. 2622-2629. ISSN 0360-1323 Full text not available from this repository. Official URL: http://dx.doi.org/10.1016/j.buildenv.2006.06.015 Abstract In recent years, an emerging technology termed high-performance concrete (HPC) has become popular in construction industry. The constituent materials of HPC depend on the desired characteristics and the availability of suitable local economic alternatives. Tests are reported in this study on the flexural behaviour of high-performance reinforced concrete (HPRC) beams made with crushed sandstone coarse and fine aggregate together with silica fume. The beams were made from concrete having compressive strength of 74 and 78 N/mm2 and tensile reinforcement ratio in the range of 1.34-3.14%. The ultimate moment for the tested beams was found to be about 14-30% and 3-9% higher than that of the predicted ultimate moment based on BS 8110 and ACI 318, respectively. Due to lower stiffness of sandstone aggregates, the beams resulted in excessive deflection under service loads. The observed crack width under service loads were within acceptable limits. The mineral fillers in crushed sandstone sand and silica fume increased the flexural stiffness of HPRC beams and resulted in adequate safety factors against flexural failure. The test results showed that it is possible to produce HPC using sandstone aggregates with silica fume and superplasticisers. © 2006 Elsevier Ltd. All rights reserved. Item Type: Article Uncontrolled Concrete strain, Crack width, Crushed sandstone aggregate, Deflection, High- Keywords: performance concrete Subjects: T Technology > TH Building construction > TH1000-1725 Systems of building construction Including fireproof construction, concrete construction Divisions: School of Engineering and Information Technology ID Code: 2914 Deposited By: IR Admin Deposited On: 04 May 2011 12:42
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