Rheological and thixotropic properties of cemented ultrafine tailings backfill with cold-bonded lightweight aggregates

Powder Technology, Journal Year: 2025, Volume and Issue: unknown, P. 120750 - 120750

Published: Feb. 1, 2025

Language: Английский

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Preparation and characteristics of cold-bonded lightweight aggregates by recycling mine tailings and industrial waste residues based-binder

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 95, P. 110190 - 110190

Published: July 11, 2024

Language: Английский

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The Effect and Mechanism of Superplasticizers on the Efflorescence Performance of Alkali-Activated Slag-based Materials

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04160 - e04160

Published: Jan. 1, 2025

Language: Английский

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Study on Flow and Settlement Performance Evaluation and Optimization of Coal Gangue Slurry Filling Material Based on Fractal Gradation

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(5), P. 2405 - 2405

Published: Feb. 24, 2025

Coal gangue slurry filling technology is an effective way of utilizing coal solid waste resources rationally, and its fluidity sedimentation behavior have essential influence on performance. However, evaluation optimization methods for the performance materials (CSFMs) are still scarce. In order to solve this problem, based fractal grading theory, paper carried out experimental study dimension flow characteristics CSFMs, revealed impact slurry, constructed a CSFM model dimension. At same time, mass fraction particle distribution in process was analyzed using experiment. Combined with fitting analysis construction, method D proposed. The results show that (1) slump, expansion, yield stress CSFMs increased first then decreased increase dimension, bleeding rate rise consistency coefficient shows proportion fine particles will coefficient. (2) indicates negatively correlated PS. change most significant range 2.3 2.4, where slurry’s stability poor. When exceeds 2.5, improves significantly. (3) Based settlement performance, dimensions between 2.50 2.59 achieve best balance, which ensures reliability long-distance transportation construction quality. research can provide reference pipeline whole important practical significance realizing large-scale disposal green mining mines.

Language: Английский

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Visualization and quantification of pore structure in cement tailings waste rock composites using X-ray computed tomography and deep learning

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 476, P. 141341 - 141341

Published: April 15, 2025

Language: Английский

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Flowability, microstructure, early and long-term strength modification of cemented ultrafine tailings backfill using artificial lightweight aggregates

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 438, P. 137253 - 137253

Published: July 4, 2024

Language: Английский

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The exploration of effect for nano-Al2O3 on solid waste based superfine tailings cemented paste backfill: Pyrolysis property, hydration mechanism and environmental risk

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 452, P. 139035 - 139035

Published: Nov. 1, 2024

Language: Английский

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Factors affecting the rheology of cement‐based composites: A review

Journal of the American Ceramic Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Rheology, the study of flow and deformation in materials, is key to understanding behavior fresh cementitious which, turn, influences their hardened properties durability. The rheology mixes complex significantly impacts fresh‐state application construction. Understanding controlling factors affecting crucial for optimizing mix designs improving construction practices. This provides an in‐depth rheology, influencing optimization, its correlation with mathematical models. paper presents impact internal factors, such as water–cement ratio cement fineness, well external like temperature, shear rate, time, on materials. examines how these influence fundamental rheological characteristics behaviors thixotropy thinning. It outlines ways optimize designs, enhance workability, improve emerging technologies 3D concrete printing. Additionally, it correlates available models identified factors. analysis fills a gap existing literature contributes advancing technology practical applications, paving way innovative solutions industry. also directions future research modeling, potentially leading more efficient sustainable

Language: Английский

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Advances in the Application and Mechanism of Admixtures and Industrial By-Products in Cement-Based Self-Leveling Mortar: A Comprehensive Review

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1709 - 1709

Published: April 9, 2025

Cement-based self-leveling mortar (CSL) is a special building material that utilizes cement as the main cementitious component, combined with variety of admixtures. Its characteristics enable it to effectively level and fill uneven surfaces. Additionally, innovative green CSL developed from industrial by-products can further enhance both environmental economic benefits. This paper systematically reviews use admixtures in production CSL. The findings include following: (i) compared international ISO standard, China's standard JC/T 985 provides more detailed testing parameters regarding fluidity, mechanical properties, shrinkage; (ii) effect additives on affected by its molecular weight structure, high improving workability additives; (iii) have been incorporated into CSL, leading reduction reduced greenhouse gas emissions decreased impact; (iv) macro microanalysis results different CSLs show by-product gypsum has greatest potential for application Based these findings, this offers valuable reference data Furthermore, contributes innovatively sustainable development infrastructure construction.

Language: Английский

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Recycling Gold Mine Tailings into Eco-Friendly Backfill Material for a Coal Mine Goaf: Performance Insights, Hydration mechanism, and Engineering Applications

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 193, P. 95 - 114

Published: Nov. 12, 2024

Language: Английский

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