Influence of the Non-Woven Geotextile (NWG) on the engineering properties of clayey-sand treated with copper slag-based geopolymer

Fakhrabadi, Alireza; Ghadakpour, Moein; Choobbasti, Asskar Janalizadeh; Kutanaei, Saman Soleimani

doi:10.1016/j.conbuildmat.2021.124830

Cited by 21 publications

(3 citation statements)

References 59 publications

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“…CS is a substantial byproduct originating from the conversion of copper ore concentrates into metallic copper within smelting facilities, as illustrated in Figure 1 [26,27]. The slag materials are stored in expansive landfills and consume substantial land space [28].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Strength and Microstructure Properties of Concrete Incorporating Copper Slag as Fine Aggregate: A State-of-the-Art Review

Abdalla,

Alahmari

2024

Advances in Civil Engineering

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Incorporation solid waste generated in industry into concrete production is considered an environmentally sustainable approach as it reduces pollution, lowers energy consumption, and mitigates the depletion of natural resources. Copper slag (CS) is a residual material produced through the copper smelting process. The slag materials are kept in expansive landfills and consume substantial land space. The typical approaches for managing CS involve recycling, metal recovery, and the creation of additional value through the manufacturing of items, including but not limited to railroad ballast, abrasive tools, cutting tools, roofing granules, abrasive tiles, glass, asphalt surfaces, and foundations for road construction. This study aimed to evaluate the mechanical strength and microstructural properties of concrete, focusing on using CS as a substitute for fine aggregate. This review systematically analyzes its use in concrete production over the last two decades. For the review, data were collected from various publishers, which are peer-reviewed articles, and validated using databases like Scopus, Scimago journal and country rank (SJR), Web of Science, etc. This review concluded that the potential of utilizing CS as a workable alternative for fine aggregate is highly attractive, given its superior performance in mortar and concrete mixes when compared to mixes without CS.

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Section: Introductionmentioning

confidence: 99%

Mechanical Strength and Microstructure Properties of Concrete Incorporating Copper Slag as Fine Aggregate: A State-of-the-Art Review

Abdalla,

Alahmari

2024

Advances in Civil Engineering

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“…The parent material is the primary material that makes up soil, and has a great influence on the composition and action of inorganic soil cementing agents (Bosch-Serra et al, 2017;Oades et al, 1993). The formation of organic cementing agents is related to the quantity of microorganisms, their activity and metabolites, plant root exudates, and organic matter input (Chaney et.al., 1986b;Fakhrabadi et al, 2021;Gale et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Long-term effects of soft rock amendment on changes of soil aggregate cementing agents of sandy soil by SEM-EDS

Sun

Liu

Han

et al. 2023

Front. Environ. Sci.

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Soil aggregates are a crucial constituent of soil and have a significant function in regulating water, nutrients, air, and heat within the soil. The development of soil aggregates is influenced by various factors, including the soil’s parent material and human activities. Understanding the formation and the mechanism of stabilization of soil aggregates is of great significance in the study of soil development, in regulating and managing organic carbon pools in soils, and in promoting soil fertility. In this study, aeolian sandy soil with a low degree of soil development and compound soil formed by combining soft rock and aeolian sandy soil were selected as the research objects. We selected three time points from 0 to 9 years after amendment by soft rock in order to investigate the changes of soil aggregate cementing agents. The shape of soil aggregates in both types of soils was analyzed by environmental scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), which were also used to assess the appearance of soil aggregates and quantify the composition of mineral elements on a cross section of the aggregate. The results show that when the soft rock and the aeolian sandy soil are compounded and mixed, the clay minerals in the soft rock change the microstructure of the original aeolian sandy soil from a single granular barrier to one characterized by a cumulative porous structure, indicating that clay minerals promote soil development and form aggregates with good structural properties. The cementing agents in the compounded soil aggregates are mainly clay minerals, aluminum, iron, and calcium. In comparison to aeolian sandy soils, the presence of iron and calcium in compounded soils is notably elevated. The iron oxides present in compounded soils serve a similar function to “bolts” in the formation of soil aggregates. These findings establish a theoretical foundation for investigating the process of soil aggregate formation and the mechanisms by which cementing agents contribute to their stabilization.

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“…The CBR value increased with decreasing the AA content, and the results of CBR were found according to the Ministry of Road Transport and Highways (MORT&H). Fakhrabadi et al (2021) stabilized non-woven geotextile reinforcing clayey sand using CS. The authors mixed 10% and 15% CS with 2, 4, 8, 12, and 16 M NaOH.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of mechanical properties of problematic expansive soil using copper slag and its statistical validation

Jangid,

Grover

2023

Multiscale and Multidiscip. Model. Exp. and Des.

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This experimental research has been conducted to improve the mechanical properties of the problematic expansive soil using copper slag. The copper slag has been utilized to improve the Talab soil in Nainwa for the rst time. These mechanical properties are consistency limits, compaction, and strength properties. The swelling properties show that the collected soil has a high degree of expansive nature and low speci c gravity. Therefore, the copper slag has been added to the soil from 5-30% at a 5% variation by its oven-dry weight. The experimental results reveal that the free swell index of soil has decreased by 69.88% with the addition of 30% copper slag. It has also been observed that the liquid and plastic limits have been decreased. The plastic limit of soil decreases because copper slag takes place in voids. Due to this phenomenon, the maximum dry density of soil has been increased by 14.75% with the addition of 25% copper slag. The California bearing ratio (CBR) value of soil has been increased to 1.13% (soaked condition) and 3.8% (unsoaked condition) by adding 25% copper slag. This research introduces an empirical relationship between unsoaked and soaked CBR with a determination coe cient (R 2 ) of 0.8254. Moreover, it has been observed that the uncon ned compressive strength of soil has increased by 51.68% with the addition of 25% copper slag. Moreover, the value of R 2 for the experimental results obtained in this research is higher than the published experimental results, presenting the experimental study's accuracy and reliability. In addition, the analysis of variance (ANOVA) test accepts the research hypothesis for the present investigation.

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Influence of the Non-Woven Geotextile (NWG) on the engineering properties of clayey-sand treated with copper slag-based geopolymer

Cited by 21 publications

References 59 publications

Mechanical Strength and Microstructure Properties of Concrete Incorporating Copper Slag as Fine Aggregate: A State-of-the-Art Review

Mechanical Strength and Microstructure Properties of Concrete Incorporating Copper Slag as Fine Aggregate: A State-of-the-Art Review

Long-term effects of soft rock amendment on changes of soil aggregate cementing agents of sandy soil by SEM-EDS

Experimental investigation of mechanical properties of problematic expansive soil using copper slag and its statistical validation

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