Influence of recycling waste hardened mortar and ceramic rubbish on the properties of flowable fill material

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Open Engineering Pub Date : 2023-01-01 DOI:10.1515/eng-2022-0470

Shatha Sadiq Hasan

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引用次数: 0

Abstract

Abstract Fly ash (FA) cement and water make up flowable fill material, which is also generally produced from waste and utilized in place of compacted granular fill as a cost-effective fill or backfill material. The capability to produce mixtures from various inexpensive, locally available by-products is one of the main benefits of flowable fill material. To considerably reduce costs, this study designed flowable fill mixtures utilizing cement, recycled fine aggregate (RFA; recycling waste hardened mortar and ceramic rubbish), FA, superplasticizers (SPs), and water for various uses. Initially, FA, Portland cement, fine natural aggregate, and water were combined to create a control mixture. Recycled aggregate (recycling waste hardened mortar and ceramic rubbish) was used instead of normal aggregate in various mix proportions in weights of 10, 20, 30, 40, and 50%. They performed well and conformed to the requirements of flowable fill material concerning flow consistency, unit weight, compressive strength, direct tensile strength, and thermal conductivity. Finally, when compared to ordinary concrete, flowable fill material can be produced with minimal mechanical criteria, such as a compressive strength of fewer than 5.71 MPa after 60 days and a unit weight between 1,993 and 1,961 kg/m 3 . Additionally, it was discovered that using more RFA to replace normal fine aggregate in flowable fill materials could result in a relative decrease in thermal conductivity.

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回收废硬化砂浆和陶瓷垃圾对流动填料性能的影响

粉煤灰(FA)水泥和水构成可流动填料，通常也是从废物中生产出来的，作为一种具有成本效益的填料或回填材料来代替密实颗粒填料。从各种廉价的、当地可获得的副产品中生产混合物的能力是流动填料的主要优点之一。为了大幅降低成本，本研究设计了可流动填充混合物，利用水泥、再生细骨料(RFA;回收废硬化砂浆和陶瓷垃圾)、FA、高效减水剂(SPs)和各种用途的水。最初，FA、波特兰水泥、天然细骨料和水混合制成对照混合物。采用再生骨料(回收废旧硬化砂浆和陶瓷垃圾)代替普通骨料，配合比分别为10%、20%、30%、40%和50%。性能良好，符合可流动填料的流动稠度、单位重量、抗压强度、直接抗拉强度、导热性等要求。最后，与普通混凝土相比，可流动填充材料可以以最小的机械标准生产，例如60天后抗压强度小于5.71 MPa，单位重量在1993至1961 kg/ m3之间。此外，研究还发现，在可流动填料中使用更多的RFA来替代普通细骨料会导致导热系数的相对降低。

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.