Experimental Investigation of Mechanical Properties of Concrete Mix with Lightweight Expanded Polystyrene and Steel Fibers

被引:4
作者
Shah, Syed Jahanzaib [1 ,2 ]
Naeem, Asad [2 ]
Hejazi, Farzad [3 ]
Mahar, Waqas Ahmed [4 ,5 ]
Haseeb, Abdul [2 ]
机构
[1] Univ Putra Malaysia UPM, Dept Civil Engn, Serdang 43400, Malaysia
[2] Balochistan Univ Informat Technol Engn & Managemen, Dept Civil Engn, Quetta 87300, Pakistan
[3] Univ West England, Fac Environm & Technol, Bristol BS16 1QY, England
[4] Aror Univ Art Architecture Design & Heritage, Fac Architecture & Town Planning FATP, Dept Architecture, Sukkur 65200, Pakistan
[5] Univ Liege, Fac Appl Sci, Dept Urban & Environm Engn UEE, Sustainable Bldg Design SBD Lab, B-4000 Liege, Belgium
来源
CIVILENG | 2024年 / 5卷 / 01期
关键词
expanded polystyrene; lightweight; steel fiber; silica fume; compressive strength; flexural strength; CEMENT COMPOSITES; STRENGTH; BEHAVIOR; PANELS;
D O I
10.3390/civileng5010011
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The demand for lightweight aggregates in concrete compositions for diverse structural and non-structural applications in contemporary building construction has increased. This is to achieve a controllable low-density lightweight concrete, which reduces the overall structural weight. However, the challenge lies in achieving an appropriate strength in lightweight concrete while maintaining a lower unit weight. This research aims to evaluate the performance of lightweight concrete by integrating expanded polystyrene (EPS) as a partial replacement for coarse aggregate. Test specimens were cast by blending EPS with coarse aggregate at varying proportions of 0%, 15%, 30%, and 45%, while maintaining a constant water-to-binder ratio of 0.60. To enhance the bonding and structural capabilities of the proposed lightweight concrete mixes, reinforcement with 2% and 4% steel fibers by volume of the total concrete mix was incorporated. Silica fume was introduced into the mix to counteract the water hydrophobicity of EPS material and enhance the durability of lightweight concrete, added at a rate of 10% by weight of cement in all specimens. A total of 60 samples, including cylinders and beams, were prepared and cured over 28 days. The physical and mechanical properties of the lightweight EPS-based concrete were systematically examined through experimental testing and compared against a standard concrete mix. The analysis of the results indicates that EPS-based concrete exhibits a controllable low density. It also reveals that incorporating reinforcement materials, such as steel fibers, enhances the overall strength of lightweight concrete.
引用
收藏
页码:209 / 223
页数:15
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