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The other is to grind steel slag into powder, partially replace the cement as a gelling role in subgrade or soil foundations (Shen et al., 2009; Ortega-López et al., 2014; Maghool et al., 2017). Relatively few applications are considered on the incorporation of steel slag as aggregate in the pavement base course yet. Considering that cement ...
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Powder formation of the steel slag that is solidified and stored on the ground begins immediately after its discharge, and it is a continuous process. During the bulk …
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Mixing 30% carbonated steel slag powder with P·Ⅰ 42.5 cement in mortar samples yields a compressive strength of 32.1 MPa at 7 days and 47.5 MPa at 28 days, along with a flexural strength of 6.2 ...
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In this study, a novel type of high-quality mineral admixture, ultrafine ferronickel slag, is manufactured and designed, and the feasibility of its utilization in cement and concrete is systematically investigated.It was found that after mechanical grinding, ultrafine ferronickel slag can be used as a novel and special high-quality mineral …
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Secondly, the mass proportions of coal, coke and slag in coal-coke-slag powder were 42.16 %, 25.90 % and 31.94 %, respectively. Along the radial direction of the blast furnace, the degree of graphitization of carbon components of coal-coke-slag increased gradually, and the melting temperature and viscosity of the slag phase also …
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The slag powder, Portland cement, gypsum, and coal ash were blended in a specific mass ratio of 40:23:7:30 to form a mixture. Next, the mixture was agitated with varying water-to-cement ratios ranging from 40% to 60% until it became a slurry. Afterward, aluminum powder (0.05–0.20%) was added with a stirring rate of 80–100 r/min.
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Incorporating steel slag (SS) and stone powder (SP) as supplementary cementitious materials (SCMs) in cement and concrete products is an effective approach to promoting environmental protection. Recently, the effect of using steel slag alone is not satisfactory …
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The addition of higher content of steel slag powder leads to lower content of Ca (OH) 2 and higher content of CaCO 3 in 5-year-old concrete. The C 2 F, Fe 2 O 3 and RO phase are also found in 5-year-old concrete with steel slag powder. Many steel slag powder particles are not fully reacted after curing for 5 years.
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The ultrafine composite powder significantly improved the early mechanical properties of the mortar, and the mechanical properties after 28-days was equivalent to that of the control. ... Steel slag demonstrates superior heat reduction compared to fly ash, especially at 25 °C (reduced by 35%), and is comparable/closer at 50 °C. High-volume ...
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shan, China. The main activity indexes, the alkaline coefficient and activity coefficient of blast furnace slag powder are 1.69, 0.97 and 0.42. Materials 2022, 15, 6128 3 of 13
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and their study showed that steel slag-based all-solid waste cementitious materials with high blending of steel slag are safe for the environment. In the preparation of ecological UHPC [24–28], there have been some reports on the use of solid waste-based admixtures such as steel slag powder, GGBFS powder and fly
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When the dosage of steel slag is 30%, the average pore diameter of the matrix is only 8.43nm, and the appropriate steel slag dosage can reduce the heat of hydration and refine the pore size ...
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Variations in the particle size of steel slag can significantly affect the microstructure of concrete, subsequently impacting its macroscopic mechanical …
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Ultra-high performance concrete design method based on machine learning model and steel slag powder | Semantic Scholar. DOI: 10.1016/j.cscm.2022.e01682. Corpus ID: …
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DOI: 10.1016/j.conbuildmat.2022.130101 Corpus ID: 255174383; Hydration superposition effect and mechanism of steel slag powder and granulated blast furnace slag powder @article{Zhao2023HydrationSE, title={Hydration superposition effect and mechanism of steel slag powder and granulated blast furnace slag powder}, author={Jihui Zhao and …
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Next, 30% steel slag powder (dry weight of artificial soil) was added and stirred evenly for 5 min to obtain a slurry mixture. with a density of 45 kg/m 3 was obtained using a LG-2258 liquid cement ing agent from Yousuo Chemical Technology Co., ltd. (Shandong, China), and then added to produce a slurry, which was in turn …
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Workability and mechanical properties of steel slag green concrete with different types of steel slag and different dosages of admixtures were investigated. The …
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Coal gasification slag (GS) is a potential pozzolanic industrial waste discharged during coal gasification. The study aimed to investigate the effect of finely ground GS powder on the fluidity, rheology and viscoelasticity properties of cement paste, which is essential for utilizing GS as a supplementary cementitious material for building …
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DOI: 10.1016/j.jobe.2022.104866 Corpus ID: 250378155; Influence of steel slag fineness on the hydration of cement-steel slag composite pastes @article{Pang2022InfluenceOS, title={Influence of steel slag fineness on the hydration of cement-steel slag composite pastes}, author={Lan Pang and Shucong Liao and Dengquan Wang and Mingzhe An}, …
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Fig. 10, Fig. 11 show the κ-1 and ψ 2 of steel slag powder blended cement paste at different times, which together with D determines the variations of corresponding F EL. An increase in the steel slag powder content results in an increase in the Debye length. This is mainly because the steel slag powder contains fewer active minerals than cement.
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To explore the feasibility of the application of steel slag powder (SSP) in steam-cured precast concrete, 0% and 20% SSP were used to replace cement and prepare cement paste, and the early age ...
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Shan et al. used the principle that steel slag and blast furnace slag can activate each other to promote hydration and added a 25% steel slag and 25% blast …
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@article{Li2018ApplicationOS, title={Application of steel slag powder to enhance the low-temperature fracture properties of asphalt mastic and its corresponding mechanism}, author={Qiushi Li and Yanjun Qiu and Ali Rahman and Haibo Ding}, journal={Journal of Cleaner Production}, year={2018}, volume={184}, pages={21-31} } ...
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1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel output in 2021 was 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, …
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A large number of coal water slurry gasification slag (CWSGS) was discarded annually in China due to the promotion of clean coal technology. The fine slag (F CWSGS) is abundant of silicates and unburned carbon.This research investigated the preparation of a porous carbon-silica composite (CSC) from F CWSGS using KOH …
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The results indicate that 15 wt.% steel slag powder and 5 wt.% hybrid expansive agents can effectively reduce the drying shrinkage deformation of UHPC with a slight decrease of strength.
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Mahoutian et al. [18] studied the carbonization and curing behavior of steel slag blocks by using steel slag powder as binder and carbon dioxide as curing agent. The results showed that after carbonization of 24 h and environmental curing of 34 days, the compressive strength of carbonated steel slag paste reached about 35.9 MPa. ...
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Producing limestone calcined clay cement (LC 3) can reduce cement use and CO 2 emissions, but the availability and quality of clay and limestone pose challenges. This paper explores substituting these materials with seashell powder and engineering spoils for their high CaCO 3 content and cohesive clay. This study introduces the …
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@article{Li2018ApplicationOS, title={Application of steel slag powder to enhance the low-temperature fracture properties of asphalt mastic and its corresponding mechanism}, …
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