Strength and Durability Properties of Antimony Tailing Coarse Aggregate (ATCA) Concrete

Li, Long; Wang, Jianqun; Zhang, Longwei; Deng, Renjian; Zhou, Saijun

doi:10.3390/ma14195606

Cited by 6 publications

(3 citation statements)

References 55 publications

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“…Many scholars have dug down deep into this field. For example, Li et al [30] and Wang et al [24] used antimony tailings as coarse aggregate instead of lifting coarse aggregate in conventional concrete and explored its indices in terms of strength, stability, and toxic leaching aspects. When antimony tailings were used as coarse aggregate, the specimens had better tensile strength and compressive modulus of elasticity than the concrete using a natural rock as coarse aggregate; the cubic compressive strength, splitting tensile strength, and prismatic compressive elastic modulus are 1.31, 2.22, and 1.40 times that of natural rock, respectively, but their alkali activity and cracking sensitivity were less compared to conventional concrete.…”

Section: Using Antimony Tailings To Prepare Raw Materials For Buildin...mentioning

confidence: 99%

Present Situation and Research Progress of Comprehensive Utilization of Antimony Tailings and Smelting Slag

Yu,

Wang,

Zheng

et al. 2023

Sustainability

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The production process of antimony produces a large amount of solid waste, such as waste rock in mining, tailings in the beneficiation, metallurgical slag in the smelting, and so on. At present, most of these solid wastes are currently in storage, and the storage of a large amount of solid wastes is not only harmful to the local ecological environment but also a waste of resources. In view of this situation, this paper will take antimony tailings and metallurgical slag as examples and summarize them according to their different treatment methods. The comprehensive utilization of antimony tailings is mainly recovering metals by beneficiation and metallurgy and using antimony tailings as building materials and underground filling materials, while the comprehensive utilization method of antimony metallurgical slag is mainly the recovery of valuable metals by pyrometallurgy or hydrometallurgy or the stabilization technology. This paper summarizes the advantages and disadvantages of different treatment methods and puts forward the prospect of future research directions for the treatment of different metallurgical slags and tailings.

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Section: Using Antimony Tailings To Prepare Raw Materials For Buildin...mentioning

confidence: 99%

Present Situation and Research Progress of Comprehensive Utilization of Antimony Tailings and Smelting Slag

Yu,

Wang,

Zheng

et al. 2023

Sustainability

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show abstract

“…Over the past decade or so, the amount of construction waste has been on the rise. Many researchers have conducted numerous studies on the applicability of construction waste in construction projects [1][2][3][4][5][6][7]. RAC is a green concrete that replaces natural concrete aggregates (NCA) with some or all RCA to achieve sustainable building materials.…”

Section: Introductionmentioning

confidence: 99%

Nano-SiO2 Recycled Concrete Anti-Sulfate Performance and Damage Mechanism Research

et al. 2023

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The use of construction waste for concrete is an effective way to reduce the environmental burden while improving the sustainability of construction materials. Nano-SiO2 (NS) has excellent volcanic ash activity, which can effectively improve the strength of concrete. In this study, the synergistic effects of NS and 30% recycled concrete aggregate (RCA) on the mass loss, compressive strength, ultrasonic sound velocity values and microstructure of RAC after 25, 50, 75 and 100 repetitions of a dry–wet cycle (DWC) of sulfuric acid were investigated. The results show that NS has a significant role in improving RAC performance. The RAC specimens showed the lowest mass loss rate, the highest compressive strength, the lowest ultrasonic velocity value and the best resistance to sulfate erosion when the NS doping was 4%. Meanwhile, under CT and SEM, RAC with NS has lower porosity and higher hydration, which can effectively inhibit the crack generation and has stable volume growth within 0–50 repetitions of DWC. In addition, the addition of NS improves not only the microstructure of the substrate but also the interfacial transition zone (ITZ). When 4% NS was added, the porosity was the lowest and the durability improvement was the best performance. This study not only improves the production performance of RAC but also provides a strong reference for the integrated application of nanomaterials in concrete.

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“…Copper tailings can refine the pore size and promote long-term strength development of concrete [26], and replacing sand with copper tailings is conducive to the utilization of copper tailings and the improvement of concrete mechanical strength on the premise that the mechanical strength of concrete meets requirements. Li et al [27] prepared ecological concrete using antimony tailings as aggregates, and the results revealed that high-strength concrete at different substitution rates meets the requirements of industry standards. Otieno et al [28] used kimberlite tailings as aggregates in concrete and suggested that the addition of kimberlite tailings reduced the compressive strength and durability of concrete, whereas appropriate mix ratio and admixture could make up for the negative effects of kimberlite tailings.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Mechanism Analysis of Graphite Tailings Environment-Friendly Concrete

Duan

Liu

et al. 2022

Materials

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The development of tailings in concrete technology is not only conducive to the realization of the goal of reducing carbon emissions, but also conducive to the inhibition the occurrence of shortages of sand and gravel supplies. In this study, graphite tailings were used to replace sand in the range of 0~100%, and the mechanical mechanism of graphite tailings concrete was examined through compressive and flexural tests. The mechanical experimental results were evaluated and verified based on concrete macroscopic failure appearance, mesoscopic failure appearance, and physical characteristics of graphite tailings. The results revealed that the concrete strength increases first and then decreases with the increase of the graphite tailings content. Compared to GT00 (GT00 is a specimen with a graphite tailings content of 0%, and so on), GT10~GT60 exhibited better mechanical properties, of which 30% was recommended as the optimal replacement rate. The mechanical properties of GT10 and GT20 had an upward trend, and GT30 had low spalling, with aggregate fragmentation found on the fracture surface. GT30 showed the best resistance to bending and deformation. The mechanical properties of GT40~GT60 had a downward trend. When the graphite tailings content was higher than 70%, the interface defects of the aggregate matrix increased, thus making it easier for cracks to propagate along the interface. Furthermore, the mechanism of graphite tailings replacing sand verified the test results from different perspectives, which provides new analysis ideas for other tailings in environment-friendly concrete.

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Strength and Durability Properties of Antimony Tailing Coarse Aggregate (ATCA) Concrete

Cited by 6 publications

References 55 publications

Present Situation and Research Progress of Comprehensive Utilization of Antimony Tailings and Smelting Slag

Present Situation and Research Progress of Comprehensive Utilization of Antimony Tailings and Smelting Slag

Nano-SiO2 Recycled Concrete Anti-Sulfate Performance and Damage Mechanism Research

Mechanical Properties and Mechanism Analysis of Graphite Tailings Environment-Friendly Concrete

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