Optimizing the Flexural Behavior of Bamboo Reinforced Concrete Beams Containing Cassava Peel Ash using Response Surface Methodology

Q3 Engineering
T. Awolusi, O. Aladegboye, O. Babalola, E. K. Ayo, M. Azab, A. Deifalla
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引用次数: 0

Abstract

The growing concern to reduce global warming has necessitated the use of more eco-friendly materials in construction. The study is focused on the utilization of cassava peel ash as supplementary cementitious material and bamboo as reinforcement in concrete beams. The response surface methodology approach was explored to determine the effect of simultaneously varying the cassava peel ash content, bamboo size, beam length, and beam depth on the flexural strength and strain of beams. An analysis of variance was carried out on experimentally obtained results to determine the accuracy of the obtained models and the contributions made by the linear interaction and quadratic terms on flexural strength and flexural strain. The coefficient of determination obtained for RSM models showed a good correlation between all predicted and experimentally obtained results. The optimum conditions obtained for bamboo-reinforced concrete containing cassava peel ash were 3% cassava peel ash, 16 mm bamboo diameter, 500 mm beam length, and 150 mm beam depth. The predicted flexural strengths were 11.85, 14.34, and 14.95 N/mm2 and flexural strains of 0.64, 0.67, and 0.91 for 28 days, 56 days, and 90 days, respectively. To validate the model prediction, a laboratory experiment was conducted using the optimum mix design proportion. From the results obtained, it was observed that the experimental results were close to those predicted by the models. These models can be efficiently used for simulating the flexural behavior of bamboo-reinforced concrete beams. Doi: 10.28991/CEJ-2023-09-08-011 Full Text: PDF
用响应面法优化含木薯皮灰竹材钢筋混凝土梁的抗弯性能
对减少全球变暖的日益关注使得在建筑中使用更环保的材料成为必要。研究了木薯皮灰作为补充胶凝材料和竹材作为钢筋在混凝土梁中的应用。采用响应面法研究了同时改变木薯皮灰分含量、竹材尺寸、梁长和梁深对梁的抗弯强度和应变的影响。对实验得到的结果进行方差分析,以确定所得模型的准确性以及线性相互作用和二次项对抗弯强度和抗弯应变的贡献。RSM模型的预测结果与实验结果具有良好的相关性。得到木薯皮灰竹材混凝土的最佳掺量为:木薯皮灰3%、竹径16 mm、梁长500 mm、梁深150 mm。28天、56天和90天的抗弯强度分别为11.85、14.34和14.95 N/mm2,抗弯应变分别为0.64、0.67和0.91。为了验证模型的预测,采用最佳配合比进行了室内试验。结果表明,实验结果与模型预测结果接近。这些模型可以有效地用于模拟竹筋混凝土梁的受弯性能。Doi: 10.28991/CEJ-2023-09-08-011全文:PDF
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来源期刊
Open Civil Engineering Journal
Open Civil Engineering Journal Engineering-Civil and Structural Engineering
CiteScore
1.90
自引率
0.00%
发文量
17
期刊介绍: The Open Civil Engineering Journal is an Open Access online journal which publishes research, reviews/mini-reviews, letter articles and guest edited single topic issues in all areas of civil engineering. The Open Civil Engineering Journal, a peer-reviewed journal, is an important and reliable source of current information on developments in civil engineering. The topics covered in the journal include (but not limited to) concrete structures, construction materials, structural mechanics, soil mechanics, foundation engineering, offshore geotechnics, water resources, hydraulics, horology, coastal engineering, river engineering, ocean modeling, fluid-solid-structure interactions, offshore engineering, marine structures, constructional management and other civil engineering relevant areas.
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