Recycling of Basalt and Limestone Cutting Dust in Concrete Mix Design

Q3 Engineering

Open Civil Engineering Journal Pub Date : 2023-05-01 DOI:10.28991/cej-2023-09-05-010

Mohammad T. Awad, Ashraf Shaqadan, Jamal Al-Adwan, Faroq Maraqa

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引用次数: 0

Abstract

Objectives: The goal is to integrate stone cutting waste into the concrete manufacturing industry to reduce environmental degradation. Methods/Analysis: Two types of stone cutting waste (Basalt and limestone) were separately collected from local facilities. An experimental program was conducted to prepare concrete mixes with 10%, 20%, 30%, and 40% replacement of sand by the two types of stone powder. Physical and chemical quality testing was carried out on the water, aggregates, and cement used in the concrete mix. The experiment compared a standard concrete mix (0% replacement) consisting of 6 cylinders and 6 cubes with a mix of 24 cylinders and 24 cubes after 7 days and 28 days. Results: Compression, tension, and stress tests were performed on the produced specimens. Regarding basalt replacement, a 10% replacement showed a higher impact on compressive strength and tension. For limestone, the 10% and 40% replacement fractions exhibited an insignificant reduction in compressive strength, indicating that a 40% replacement of sand with limestone dust is practical for most applications. Replacing sand with stone cutting waste in concrete can bring several benefits to the environment and enhance project feasibility. Even a small fraction of replacement can improve concrete properties. Novelty:Protect natural sand mining causes damage to ecosystems, leading to erosion and loss of biodiversity. Doi: 10.28991/CEJ-2023-09-05-010 Full Text: PDF

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玄武岩和石灰石切割粉尘在混凝土配合比设计中的回收利用

目标:目标是将石材切割废料纳入混凝土制造行业，以减少环境退化。方法/分析:从当地设施中分别收集玄武岩和石灰石两类切割废料。进行了两种石粉替代10%、20%、30%、40%的混凝土配合比试验。对混凝土配合料中使用的水、骨料和水泥进行了理化质量检测。实验将6柱6立方的标准混凝土配合比(0%置换)与24柱24立方的配合比在7天和28天后进行对比。结果:对生产的样品进行了压缩、拉伸和应力测试。更换玄武岩时，更换10%对抗压强度和抗拉强度影响较大。对于石灰石，10%和40%的替代分数对抗压强度的降低并不显著，这表明用石灰石粉尘替代40%的沙子在大多数应用中是可行的。在混凝土中以碎石废料代替砂石，对环境有多方面的好处，提高了工程的可行性。即使是一小部分的替换也能改善混凝土的性能。新颖性:保护天然采砂对生态系统造成破坏，导致水土流失和生物多样性丧失。Doi: 10.28991/CEJ-2023-09-05-010全文:PDF

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来源期刊

Open Civil Engineering Journal Engineering-Civil and Structural Engineering

CiteScore

1.90

自引率

0.00%

发文量

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.