废骨料混凝土对钢筋混凝土外梁受弯性能的影响

Q2 Engineering

International Review of Applied Sciences and Engineering Pub Date : 2023-10-03 DOI:10.1556/1848.2023.00640

Ashraf A. M. R. Hiswa, Mustafa Salman Shubber, Thaer Matlab Mezher

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引用次数: 0

摘要

摘要本文研究了废弃混凝土骨料对钢筋混凝土外梁受弯性能的影响。为此试验配制了7种掺有不同废混凝土掺量和外加剂的混合料。利用Ansys软件对7根梁进行了数值模拟，并利用7种混合材料的特性对其影响进行了研究。研究发现，废旧混凝土骨料的使用降低了混凝土的承载力和延性。结果表明，仅使用废混凝土时，梁的承载力降低了10.7%。掺合料的使用提高了混凝土的性能，掺加硅灰和高效减水剂可使梁的承载能力提高39%，掺加多种掺合料可使梁的承载能力提高44.6%。此外，还发现添加添加剂可以显著提高梁的延性。

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Flexural behavior of external reinforced concrete beams by using waste aggregate concrete

Abstract The influence of utilizing waste concrete aggregates on the flexural behavior of external reinforced concrete beams has been studied. Seven mixtures were prepared for this investigation where the concrete mixtures had different waste concrete percentages and admixtures. Also, seven beams were modeled by Ansys program and the properties of the seven mixtures have been used in the models to study their effects. It was found that using waste concrete aggregates has decreased the load bearing capacity and concrete ductility. It was found that the beam bearing capacity was decreased by 10.7% when using only waste concrete. Using admixtures have enhanced the concrete properties where the load capacity of beams has been increased by 39% when using silica fume and superplasticizer and the load capacity has increased by 44.6% when multi-admixtures have been used. Besides, it was found that using additives has enhanced the beam ductility significantly.

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来源期刊

International Review of Applied Sciences and Engineering Materials Science-Materials Science (miscellaneous)

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

46 weeks

期刊介绍： International Review of Applied Sciences and Engineering is a peer reviewed journal. It offers a comprehensive range of articles on all aspects of engineering and applied sciences. It provides an international and interdisciplinary platform for the exchange of ideas between engineers, researchers and scholars within the academy and industry. It covers a wide range of application areas including architecture, building services and energetics, civil engineering, electrical engineering and mechatronics, environmental engineering, mechanical engineering, material sciences, applied informatics and management sciences. The aim of the Journal is to provide a location for reporting original research results having international focus with multidisciplinary content. The published papers provide solely new basic information for designers, scholars and developers working in the mentioned fields. The papers reflect the broad categories of interest in: optimisation, simulation, modelling, control techniques, monitoring, and development of new analysis methods, equipment and system conception.