A study of characteristics of man-made lightweight aggregate and lightweight concrete made from expanded polystyrene (eps) and cement mortar

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Open Engineering Pub Date : 2023-01-01 DOI:10.1515/eng-2022-0432

F. J. Kadhim, Muammar Attaee, Jwad K. Almusawi, Musaab Sabah Abed

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引用次数: 0

Abstract

Abstract This research investigated the feasibility of using waste-expanded polystyrene (EPS) and mortar to produce lightweight aggregate (LWA). The EPS extracted from the leftover backing waste was crushed into beads using an electric grinder and mixed in three different proportions with two types of mortars (with and without a superplasticizer). Physical property tests such as loose bulk density and water absorption were carried out for the LWA. Also, the compressive strength of the manufactured lightweight aggregate concrete (LWAC) was determined, and failure modes were discussed. The results indicate that using the EPS is effective for LWA. The loose bulk density is obtained at a range from 588 to 790 kg/m 3 790\hspace{0.33em}{\text{kg/m}}^{3} , which meets the requirements of the American society for testing and materials C330 specification of LWA. For water absorption, the value obtained ranges from 6.45 to 14.05%, slightly higher than the normal aggregate due to the voids in the LWA. When using LWA containing a superplasticizer to produce LWAC, the compressive strength was higher than the concrete with LWA without a superplasticizer. The highest compressive strength for LWAC was 21 MPa.

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发泡聚苯乙烯（eps）与水泥砂浆制备人造轻骨料及轻质混凝土的特性研究

摘要本研究探讨了利用废弃发泡聚苯乙烯（EPS）和砂浆生产轻骨料（LWA）的可行性。使用电动研磨机将从剩余的背衬废料中提取的EPS粉碎成珠子，并以三种不同的比例与两种类型的砂浆（使用和不使用高效减水剂）混合。对LWA进行了松散堆积密度和吸水率等物理性能测试。测定了轻骨料混凝土的抗压强度，并对其破坏模式进行了讨论。结果表明，使用EPS对LWA是有效的。松散堆积密度在588至790 kg/m 3 790 \space｛0.33em｝｛\text｛kg/m｝｝^｛3｝的范围内获得，满足美国测试协会和LWA材料C330规范的要求。对于吸水率，所获得的值范围为6.45至14.05%，由于LWA中的空隙，略高于正常骨料。当使用含有高效减水剂的LWA来生产LWAC时，其抗压强度高于含有LWA的混凝土。LWAC的最高抗压强度为21MPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Open Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

30 weeks

期刊介绍： Open Engineering publishes research results of wide interest in emerging interdisciplinary and traditional engineering fields, including: electrical and computer engineering, civil and environmental engineering, mechanical and aerospace engineering, material science and engineering. The journal is designed to facilitate the exchange of innovative and interdisciplinary ideas between researchers from different countries. Open Engineering is a peer-reviewed, English language journal. Researchers from non-English speaking regions are provided with free language correction by scientists who are native speakers. Additionally, each published article is widely promoted to researchers working in the same field.