Cleaner production of high-quality manufactured sand and ecological utilization of recycled stone powder in concrete

Wu, Jiale; Du, Xuejian; Li, Zhitang; Wu, Dinglve; Sun, Jiangtao; Wang, Zhongwen; Huo, Xujia; Zhao, Deqiang

doi:10.1016/j.jclepro.2022.134146

Cited by 28 publications

(8 citation statements)

References 34 publications

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“…In turn, another work used SD to replace sand at 0%, 25%, and 100% by weight and design mixes prepared to achieve compressive strength classes C25, C30, C35, C40, and C45 for each of the three replacement levels [46]. In addition, it was shown that the substitution of 25% of sand by SD provided an increase in strength of 7.10% on average and an overall performance of 16.19% [3,68].…”

Section: Use Of Stone Dust In Sustainable Concretementioning

confidence: 99%

“…Among the main raw materials, sand and gravel are widely used in the construction industry as fine and coarse concrete aggregates, respectively. They represent a significant portion of the concrete's total volume [2], with sand alone accounting for over one-third of the aggregate by volume or mass [3]. The demand for these materials is enormous, with an estimated consumption of 3.2 billion to 5.0 billion tons of sand annually for various applications such as concrete, glass, ceramics, mortar, and road construction [3,4].…”

Section: Introduction 1overviewmentioning

confidence: 99%

“…They represent a significant portion of the concrete's total volume [2], with sand alone accounting for over one-third of the aggregate by volume or mass [3]. The demand for these materials is enormous, with an estimated consumption of 3.2 billion to 5.0 billion tons of sand annually for various applications such as concrete, glass, ceramics, mortar, and road construction [3,4]. By the year 2100, the amount of sand used is projected to reach 25 billion tons annually, significantly exceeding the available supply of approximately 10 billion tons per year [5].…”

Section: Introduction 1overviewmentioning

confidence: 99%

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A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

et al. 2023

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The escalating demand for natural resources within the construction industry is progressing upward. At the same time, however, there is a great concern regarding the depletion of these resources. This review paper emphasizes the significance of utilizing alternative aggregate materials in concrete. Particularly, it aims to explore replacing natural sand with stone dust. On the one hand, the depletion of primary sources of natural sand worldwide, combined with environmental and ecological concerns, drives the adoption of alternative aggregate materials for sustainable concrete construction. On the other hand, stone dust, a waste from the quarrying industry, offers a cost-effective and practical solution for producing concrete. This article presents a comprehensive literature review of the main trends in utilizing stone dust in recycled aggregates in the past decade and its influence on concrete properties. It addresses critical research questions regarding the physical and chemical properties of stone dust aggregates compared to natural sand; the impact of stone dust on the workability, mechanical, physical, and durability properties of recycled concrete; and the potential reduction of environmental impacts in terms of energy consumption and emissions through the replacement of natural sand with stone dust. Ultimately, this paper proposes future investigative work based on identified research gaps.

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Section: Use Of Stone Dust In Sustainable Concretementioning

confidence: 99%

Section: Introduction 1overviewmentioning

confidence: 99%

Section: Introduction 1overviewmentioning

confidence: 99%

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A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

et al. 2023

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“…Rayed et al [3] found that the compressive strength was increased from 30 to 41 Mpa when stone powder replaced cementitious materials at a replacement rate of 20%. The physical filling effect of stone powder on the concrete matrix [4] helps to improve the particle packing density of HFS, and the tiny particles are filled in the aggregate gaps as micro-aggregates [5][6][7], and the strength is improved. At the same time, the friction between the solid particles increases, resulting in an increase in yield stress, plastic viscosity, and thixotropy of the concrete, resulting in a decrease in the concrete slump.…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical Properties of High Fine Silty Basalt Fiber Shotcrete Based on Orthogonal Design

Wang¹,

Yang²,

Yang³

et al. 2023

Journal of Renewable Materials

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In order to improve the comprehensive utilization rate of high fines sand (HFS) produced by the mine, full solid waste shotcrete (HFS-BFRS) was prepared with HFS as fine aggregate in cooperation with basalt fiber (BF). The strength growth characteristics of HFS-BFRS were analyzed. And the fitting equation of compressive strength growth characteristics of HFS-BFRS under the synergistic effect of multiple factors was given. And based on the orthogonal experimental method, the effects on the compressive strength, splitting tensile strength and flexural strength of HFS-BFRS under the action of different levels of influencing factors were investigated. The effect of three factors on the mechanical properties of HFS-BFRS, 3, and 28 d, respectively, was revealed by choosing the colloidal sand ratio (C/H), basalt fiber volume fraction (BF Vol) and naphthalene high-efficiency water reducing agent (FDN) as the design variables, combined with indoor tests and theoretical analysis. The results show that the sensitivity of the three factors on compressive strength and flexural strength is C/H > FDN > BF Vol, and splitting tensile strength is BF Vol > FDN > C/H. Finally, the fitting ratio of HFS-BFRS was optimized by the factor index method, and the rationality was verified by the field test. For the fluidity of HFS-BFRS, the slump can be improved by 139% under the action of 1.2% FDN, which guarantees the pump-ability of HFS-BFRS. KEYWORDSSolid wastes recycling; high-fine silt; basalt fiber; total solid waste shotcrete; orthogonal design Nomenclature HFSHigh-fine silt FDN Naphthalene high-efficiency water-reducing agent BF Basalt fiber

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“…Now more than ever, it is necessary to find a substitute for river sand in construction projects [11,12]. Engineers and researchers have developed concepts for reducing the usage of river sand and for using many alternative materials instead, such as stone crusher dust, foundry sand, manufactured sand, and many other waste products [13]. Most of the 1291 (2023) 012027 IOP Publishing doi:10.1088/1757-899X/1291/1/012027 2 research papers on manufactured sand are used as a partial replacement for concrete mixes up to M40 [7].…”

Section: Introductionmentioning

confidence: 99%

Investigating the effect of Manufactured sand and Silica Fume on the properties of Concrete

Chowdary,

Mahajan,

Jaggi

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In the present era, concrete is one of the most commonly used construction materials worldwide. Consequently, the demand for natural river sand is increasing. Since the mining of natural sand has already been outlawed by the government in many regions, now it is essential to look into sustainable materials to control natural sand extraction. Hence, manufactured sand (MS) has been shown in numerous studies to be a more practical and environmentally responsible alternative to river sand (RS), which is normally used in the production of concrete. At the same time, the cement industry produces tons of greenhouse gases into the atmosphere, affecting atmospheric conditions. Now, it’s time to look into a suitable replacement material for cement. To investigate the feasibility of using manufactured sand & silica fume in place of river sand and cement under normal climatic conditions fresh, mechanical and durability properties were conducted in the laboratory. Twelve samples of M30 grade cubes and cylinders at desired M sand percentages of 0, 20, 40, 60, 80, and 100 & 0% and 5% variation of silica fume with cement are included in this study as a comparison to the control mix. After 28 days of water curing, a random variation in the properties of concrete was observed in the samples. In this experimental study, SF represents Silica Fume, MS represents manufactured sand, RS represents river sand, FA represents Fine aggregates and CA represents Coarse aggregates.

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Cleaner production of high-quality manufactured sand and ecological utilization of recycled stone powder in concrete

Cited by 28 publications

References 34 publications

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

Study on Mechanical Properties of High Fine Silty Basalt Fiber Shotcrete Based on Orthogonal Design

Investigating the effect of Manufactured sand and Silica Fume on the properties of Concrete

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