Insight to workability, compressive strength and microstructure of lithium slag-steel slag based cement under standard condition

Zhou, Mengya; Yan, Jun; Fan, Jinyuan; Xu, Yangsheng; Lu, Yen‐Shen; Duan, Ping; Zhu, Yingcan; Zhang, Zuhua; Li, Zheng

doi:10.1016/j.jobe.2023.107076

Cited by 5 publications

(19 citation statements)

References 43 publications

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“…Among the composite systems, the 10SS-20LS group exhibited the highest peak strength, thus slightly surpassing that of the PC and signifying that the SS-LS demonstrated more pronounced pozzolanic activity at suitable proportions. In experiments conducted by Zhou et al [ 63 ] to assess the reactivity of LS and SS as SCMs, variations in the peak depth were observed in each sample, as are shown in Figure 20 . Notably, changes in the depths of the peaks corresponding to the hydroxyl groups in the Ca(OH) 2 and the Si–O bonds in the Si–O tetrahedra were noted with the introduction of LS and SS.…”

Section: Chemical and Microstructural Investigations Of Cementitious ...mentioning

confidence: 96%

“…In the LS-SF geopolymer, the setting accelerated at a Si/Al ratio of 3.5 and decelerated with higher Si/Al ratios, thereby demonstrating the influence of silica fume on the setting time. Moreover, Zhou et al [ 63 ] concluded that as LS content increased from 0% to 20%, the initial and final setting times of fresh mortar decreased by 16.7% and 12.1%, respectively. A previous study also supported that LS addition can expedite the setting time by accelerating ettringite formation, which is a major hydration product of cement [ 16 ].…”

Section: Fresh State Properties Of Cementitious Composites With Ls In...mentioning

confidence: 99%

“…In the study by Zhou et al [ 63 ], experiments were conducted to evaluate the reactivity of LS and SS as SCMs. The addition of 10% LS powder resulted in substantial hydration product formation at 28 days.…”

Section: Mechanical Properties Of Cementitious Composites With Ls Inc...mentioning

confidence: 99%

“…XRD analysis provides insights into the crystalline phases within samples. Zhou et al [ 63 ] generated XRD patterns for specimens containing LS and SS following standard curing for 7 days, as are illustrated in Figure 14 . The primary mineral composition of the cementitious materials was identified as portlandite, calcite, C 3 S, Ca 2 Fe 2 O 5 , LiAlSi 2 O 6 , and ettringite.…”

Section: Chemical and Microstructural Investigations Of Cementitious ...mentioning

confidence: 99%

“… The setting time ratios of cementitious composites with varying levels of LS substitution [ 16 , 23 , 37 , 39 , 41 , 63 , 88 ]. …”

Section: Figurementioning

confidence: 99%

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A Review on Cementitious and Geopolymer Composites with Lithium Slag Incorporation

Gou,

Rupasinghe,

Sofi

et al. 2023

Materials

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This study critically reviews lithium slag (LS) as a supplementary cementitious material (SCM), thereby examining its physiochemical characteristics, mechanical properties, and durability within cementitious and geopolymer composites. The review reveals that LS’s particle size distribution is comparable to fly ash (FA) and ground granulated blast furnace slag (GGBS), which suggests it can enhance densification and nucleation in concrete. The mechanical treatment of LS promotes early hydration by increasing the solubility of aluminum, lithium, and silicon. LS’s compositional similarity to FA endows it with low-calcium, high-reactivity properties that are suitable for cementitious and geopolymeric applications. Increasing the LS content reduces setting times and flowability while initially enhancing mechanical properties, albeit with diminishing returns beyond a 30% threshold. LS significantly improves chloride ion resistance and impacts drying shrinkage variably. This study categorizes LS’s role in concrete as a filler, pozzolan, and nucleation agent, thereby contributing to the material’s overall reduced porosity and increased durability. Economically, LS’s cost is substantially lower than FA’s; meanwhile, its environmental footprint is comparable to GGBS, thereby making it a sustainable and cost-effective alternative. Notwithstanding, there is a necessity for further research on LS’s fine-tuning through grinding, its tensile properties, its performance under environmental duress, and its pozzolanic reactivity to maximize its utility in concrete technologies. This study comprehensively discusses the current strengths and weaknesses of LS in the field of building materials, thereby offering fresh perspectives and methodologies to enhance its performance, improve its application efficiency, and broaden its scope. These efforts are driving the sustainable and green development of LS in waste utilization and advanced concrete technology.

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Section: Chemical and Microstructural Investigations Of Cementitious ...mentioning

confidence: 96%

Section: Fresh State Properties Of Cementitious Composites With Ls In...mentioning

confidence: 99%

Section: Mechanical Properties Of Cementitious Composites With Ls Inc...mentioning

confidence: 99%

Section: Chemical and Microstructural Investigations Of Cementitious ...mentioning

confidence: 99%

“… The setting time ratios of cementitious composites with varying levels of LS substitution [ 16 , 23 , 37 , 39 , 41 , 63 , 88 ]. …”

Section: Figurementioning

confidence: 99%

See 3 more Smart Citations

A Review on Cementitious and Geopolymer Composites with Lithium Slag Incorporation

Gou,

Rupasinghe,

Sofi

et al. 2023

Materials

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Insight into the performance of composite binder with high-volume steel slag, blast furnace slag and desulfurization gypsum

Wang,

Ma,

Tai

et al. 2024

Journal of Sustainable Cement-Based Materials

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Effect of Lithium Mica Slag on the Internal Sulfate Attack of Cement Mortar

Liu,

Huang,

Dong

2024

Applied Sciences

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Lithium mica slag is a byproduct acquired via the sulfate method of lithium extraction, and it contains a certain quantity of soluble sulfates. The improper storage of lithium mica slag not only takes up a large amount of land resources, but also poses a threat in terms of environmental pollution. Therefore, this study aimed to investigate the mechanism by which SO42− dissolves in lithium mica slag, along with the impacts of internal sulfate attacks on mortar specimens with 10%, 20%, and 30% lithium mica slag contents. Testing was carried out in terms of the expansion, mass change, flexural and compressive strengths, porosity, composition, and contents of the products. It was determined that a significant quantity of SO42− was generated in mortar specimens with lithium mica slag. The mortar specimens mixed with lithium mica slag produced more ettringite (AFt: 3CaO·Al2O3·3CaSO4·32H2O), which is the product of internal sulfate attacks. This demonstrates that there was an internal sulfate reaction in the mortar specimens mixed with lithium mica slag. The internal sulfate reaction in mortar samples with lithium mica slag was finished in the later stages. It is noteworthy that the reaction did not lead to any cracking or damage; instead, it later allowed for a retention of strength that was equivalent to the strength of mortar specimens without lithium mica slag. In addition, the partial replacement of cement with lithium mica slag not only reduced the environmental pollution caused by soluble sulfates in lithium mica slag, but also reduced the use of cement and, thus, lowered costs.

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Insight to workability, compressive strength and microstructure of lithium slag-steel slag based cement under standard condition

Cited by 5 publications

References 43 publications

A Review on Cementitious and Geopolymer Composites with Lithium Slag Incorporation

A Review on Cementitious and Geopolymer Composites with Lithium Slag Incorporation

Insight into the performance of composite binder with high-volume steel slag, blast furnace slag and desulfurization gypsum

Effect of Lithium Mica Slag on the Internal Sulfate Attack of Cement Mortar

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