Understanding the impact of ultrafine phosphorus slag on the workability of cement paste

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-02-14 DOI:10.1016/j.powtec.2025.120800

Yichen Shan , Shiyu Zhuang , Xiao Yu

引用次数: 0

Abstract

Phosphorus slag is a potential high-valued mineral admixture of concrete, which can be ground into ultrafine powder to increase utilization efficiency. However, little is known about the impact of phosphorus slag fineness on the workability of cement paste. In this work, the influence of ultrafine phosphorus slag (UPS) on the workability of cement paste was in-depth investigated. Results show that with addition of UPS, the delay of hydration exothermic peak and the extension of setting time are more obvious than those with ordinary phosphorus slag (OPS). However, the fluidity and rheological properties show reverse trends. UPS paste exhibits a faster fluidity loss and a more rapid increase in yield stress compared with OPS paste. It reflected that in OPS paste, the chemical retarding effect of OPS on cement hydration is the primary factor driving the workability, while in UPS paste, it is the physical flocculation effect of UPS that plays an important role.

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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.