Hydration superposition effect and mechanism of steel slag powder and granulated blast furnace slag powder | Semantic Scholar. DOI: 10.1016/j.conbuildmat.2022.130101. …

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 ...

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 ...

DOI: 10.1016/j.conbuildmat.2022.126864 Corpus ID: 246953801; Study on preparation of supplementary cementitious material using microbial CO2 fixation of steel slag powder @article{Zhang2022StudyOP, title={Study on preparation of supplementary cementitious material using microbial CO2 fixation of steel slag powder}, author={Xiao …

Steel slag powder and construction waste have received widespread attention for their resource utilization as solid waste. This article uses steel slag powder and recycled concrete aggregates to prepare controlled low-strength materials (CLSM). The study investigates the influence of steel slag powder replacing cement and recycled …

Reactive powder concrete (RPC) is an ultra-high performance concrete (UHPC). Cement and silica fume content of RPC are generally rather high compared to the conventional concrete. The aim of this paper is to decrease the cement content of RPC by using phosphorous slag powder. Firstly the effect of grinding time on the activity index of …

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 …

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.

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

The effectiveness of steel slag powder on suppressing alkali aggregate reaction (AAR) expansion was assessed using the method of ASTM C441 and accelerated test method. ... SUN Shu-shan, ZHU Gui-lin, ZHANG Yu. Application technology of iron and steel slag in China [J]. China Waste Steel, 2007, 4(2): 21–28. (in Chinese) Google Scholar

Development of Cementing Material of Fine Full-Tailings Filling by Slag Powder. Jun Wang 1,2, Qian Gao 1, Gang Li 1,2, Junning Zhang 2 and Luliang Wang 2. …

Next, 30% steel slag powder (dry weight of artificial soil) was added and stirred evenly for 5 min to obtain a slurry mixture. Foam with a density of 45 kg/m 3 was obtained using a LG-2258 liquid cement foaming agent from Yousuo Chemical Technology Co., ltd. (Shandong, China), and then added to produce a foam slurry, which was in turn …

This paper presents a design method for green ultra-high performance concrete (UHPC) through machine learning (ML) models and steel slag (SS) powder. …

The alkali-activated blast furnace slag powder in this study is composed of the blast furnace slag powder, light-burned magnesia powder (MgO), potassium sodium silicate (K2SiO3), sodium hydroxide (NaOH), water, expansive agent and refractory fiber. The blast furnace slag (BFS) powder is provided by Tangshan Tielan Company, Tang …

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 …

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 …

Steel slag is regarded as overburned Portland cement clinker, which can be used as auxiliary cementing material to improve the activity of cement, while fly ash can improve the workability of concrete and improve the later strength of concrete. 3. The recommended optimal composite substitution ratio is cement: steel slag powder: fly ash …

The mineral compositions of the steel slag and GBFS powder were analyzed using X-ray diffractometer (XRD) as shown in Fig. 2, and the main mineral phases of steel slag include C 2 S, C 3 S, C 4 AF, C 3 A and RO phase are detected. The absence of distinct sharp peaks in the GBFS indicates that the GBFS has an amorphous …

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.

1.1. Raw Materials. The raw materials used for the test included P•MH 42.5 medium-heat Portland cement meeting the requirements of Chinese standard GB/T 200-2017 [], granulated blast furnace phosphorus slag produced as a by-product of the yellow phosphorus industry in Guizhou, China, phosphate slag powder with a specific surface …

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 …

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

Asphaltic concrete with steel slag powder, bamboo leaf ash and quarry dustvas fillers were compared. • The performance of the replaced asphaltic concrete was evaluated using Marshal stability, ITS, cantabro test, and so on. • Steel slag powder improved asphaltic concrete performed better than the control and bamboo leaf. •

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, …

@article{Li2018ApplicationOS, title={Application of steel slag powder to enhance the low-temperature fracture properties of asphalt mastic and its corresponding mechanism}, …

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 …

Review on utilization of steel slag. The pretreatment of steel slag is the key to its subsequent comprehensive utilization. The steel slag's particle size, composition, activity, acidity, and alkalinity might vary depending on the pretreatment process. Presently, steel slag was primarily pretreated by cold abandonment method, hot splash method ...

Workability and mechanical properties of steel slag green concrete with different types of steel slag and different dosages of admixtures were investigated. The …

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 ...