·The cumulative hydration heat of steel slag powder at 72 h is raised from J/g to J/g after the treatment with 4 wt% phosphoric acid modifier due to the increased specific surface area and the formation of hydraulic tricalcium phosphate in modified steel slag powder However when the modified steel slag powder is blended in cement
·Steel slag powder is subsequently formed and causes considerably contaminate the land and water resources and degrade the air quality [9 10] The compositions of steel slag depend on the way it is processed and they can be classified into basic oxygen furnace BOF slag electric arc furnace EAF slag and ladle furnace LF slag
·In this study steel slag powder SSP and SP by products from manufactured sand were employed with a total dose of less than 30% as a replacement for cement The results revealed that the blended cementitious materials exhibited excellent mechanical strength and pore structure with the synergistic effect of SSP and SP Compared to SSP or SP
·The slag can form powder after grinding When the specific surface area of slag powder is more than 400 m 2 /kg the strength of the cement is obviously enhanced [1] So how to ensure the quality and yield of slag powder has been an important issue Slag powder is a multivariate strongly coupled and nonlinear process
·This study investigated the effectiveness of steel slag powder SSP on the strength development of cement SSP stabilized DS CSDS The effects of cement content and type SSP content humic acid HA content and curing age on the strength development of CSDS were analyzed via a series of UCS and pH tests Additionally microstructure analyses
·In the present study the effects of steel slag powder SSP as a partial/full replacement of natural sand NS is investigated addressing physico mechanical properties of cementitious mortar at ambient after exposure to high temperature Five different replacement levels of NS with SSP have been considered namely 0 25 50 75 and 100% for
Effect of grinding method on properties of steel slag powder DUAN Siyu 1 LI Xi 2 MA Zhuohui 1 LIAO Hongqiang 1 CHENG Fangqin 1 1 State Environment Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources Institute of Resources and Environmental Engineering Shanxi University Taiyuan 030006 China; 2 Shanxi Architectural
·Steel slag is generally regarded as a supplementary cementitious material in cement based materials which is conducive to the realization of the goal of carbon peak and carbon neutralization However the lower cementitious activity and poorer volume stability of steel slag limit its high dosage in cement based materials In this paper steel slag ultrafine powder
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