Synergistic effect of waste glass and steel slag on mechanical property and microstructure of cement-based materials

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-11-22 DOI:10.1016/j.powtec.2024.120479

Lu Wang , Zhiyang Gao , Qingqing Jin , Xuemei Zhang , Yan Ruan , Yuechen Li , Shuhua Liu

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引用次数: 0

Abstract

Cement production significantly contributes to CO₂ footprint and the utilization of solid wastes in this process not only promotes resource conservation but also enhances the properties of the resulting product. The synergistic effect of waste glass powder (WGP) and steel slag powder (SSP) on the mechanical properties and microstructure of cement-based materials has been investigated. The findings indicate that when WGP or SSP is used to replace ordinary Portland cement (OPC) individually, with replacement levels ranging from 0 to 45 %, the compressive strength decreases considerably. In WGP group the reduction rate varies from 30 % to 50 % and in SSP group it ranges from 10 % to 50 % during the early hydration stages (3-28 d). However, by 90d the reduction is less notably. During later hydration, the pozzolanic reaction of WGP reduces the Ca(OH)₂ content and leading to a redistribution of hydration products, while SSP can be activated to form additional C-S-H gel and Ca(OH)₂. The combined use of WGP and SSP demonstrates an acceleration effect on OPC at early stages, and the hydration of SSP generates Ca(OH)₂ to promote the pozzolanic reaction of WGP during later hydration. Furthermore, the synergistic effect of WGP and SSP can deliver enhanced economic and environmental advantages.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.