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High-volume replacement of ordinary Portland cement (OPC) by FA usually results in comparatively lower compressive strength and delayed setting. We investigated the effect of superfine blast furnace slags (S-BFS) on the properties of high-volume FA cement. The flowability, initial setting time, mechanical properties and the hydration phase assembles …
MgO and superfine steel slag powder analyzed by X - ray fluoresceence spectrometer were presented in Table 1. The magnesium oxysulfate (MgSO 4 ·7H 2 O) employed was a pure analytical reagent grade crystal obtained from Table 1 Chemical compositions of light - burnt MgO and superfine steel slag powder / mas. % Materials Light - burned MgO
Phosphorous slag (PHS), ground granulated blast-furnace slag (GGBS) and fly ash (FA) were used as replacements of Portland cement to modify the microstructure of …
Phosphorous slag (PHS), ground granulated blast-furnace slag (GGBS) and fly ash (FA) were used as replacements of Portland cement to modify the microstructure of recycled aggregate concrete (RAC). A new manufacturing method named "W3T4" was proposed to improve the performances of interfacial transition zone (ITZ) between recycled aggregate and …
Superfine particles have been used as mineral admixtures to enhance physical properties, mechanical properties, and durability of concrete in a lot of research. In this study, …
Initial setting time gets delayed with the inclusion of 30% of regular blast furnace slag compared to superfine blast furnace slag with the same replacement percentage [107]. Choi et al. [108 ...
Effect of superfine blast furnace slag powder on properties of cement-based materials. Mater. Res. Innov., 19 (2015), pp. S168-S171. Google Scholar [23] A. Oner, S. Akyuz. An experimental study on optimum usage of GGBS for …
The particle size distribution (PSD) of the dense packing powder and that of actual cement powder was analyzed to explain the packing effect of superfine powder. The …
The GGBS in this work was commercially available ultra-fine slag of two sizes (V1 and V2), Nitrogen BET Surface area of V2 (3955 m 2 kg −1) was found to be much higher than the V1 (2435 m 2 kg −1).The (CaO + MgO)/SiO 2 ratio by mass (M, coefficient of basicity) was a reliable indicator of reactivity [25], Calculated M = 1.55 of the UFS. Fig. 1 (a) shows the …
Furthermore, superheated steam could remove moisture from the raw materials (destroying the liquid bridge) and remove the heterogeneous charge carried by the powder during the collision, which would improve the dispersion of the superfine powder [39], [40]. In fact, superheated steam can be produced by industrial waste heat from coal-fired ...
POWERFUL, FAST ACTING, SUPERFINE ZEOLITE (CLINOPTILOLITE). 400g bag only $29.95AUD + postage. pure and powerful Australian zeolite powder. Detox heavy metals and other toxins and impurities. Zeolite is the best …
The early hydration properties of cement–steel slag composite binder and cement–limestone powder composite binder were compared in this study by determining the hydration heat of binder within 3 days, the pore structure of paste and the compressive strength of mortar at the age of 3 days. Results show that at the curing temperature of 25 °C, the early …
Exploring the application of slag in methane explosion suppression can contribute to its waste resource utilization. In this study, waste slag was subjected to high-temperature scorching and modified using the sol-gel method. Subsequently, a mechanochemical technology was employed to create a composite powder consisting of KHCO 3 and modified ...
Superfine mineral powder of phosphorous slag (PHS) is an industry by-product of yellow phosphorous. Most of the PHS was discarded in China. It would be very beneficial if the PHS could be used in the concrete structures according to the policy of sustainable development. The main components of PHS
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 area of 200, 340, …
The annual output of steelmaking slag has exceeded 150 million tons. Mass accumulations of slag damage the environment and hinder sustainable development. …
Superfine slag powder production line is also called ultrafine slag micro powder plant or superfine slag powder making plant. Superfine slag powder production line is used to crush non flammable materials of which Mohs hardness is no more than seven degree and water content is less than 6%. Except for the slag, superfine powder grinding mill ...
The influence of superfine blast furnace slag content of the composite mixture on the mortar and concrete was investigated. The results show that the composite mineral …
The activity index of superfine steel slag (D50 = 2.52 μm) can reach up to 95.0% which is much higher than that of ordinary steel slag powder (D50 = 13.3 μm).
The results show that: compared with other mineral admixtures, the ultra-fine limestone powder composite admixture has a better effect of replacing part of the cement. Although it reduces the compressive strength of concrete to a certain extent, its own "micro-filling effect", "Activity effect" and "microcrystalline nucleus effect ...
DOI: 10.1016/J.CONBUILDMAT.2015.02.062 Corpus ID: 135798607; Preliminary investigation on the pozzolanic activity of superfine steel slag @article{Shi2015PreliminaryIO, title={Preliminary investigation on the pozzolanic activity of superfine steel slag}, author={Yan Shi and Hailong Chen and Jia Qing Wang and Qi-ming Feng}, journal={Construction and Building …
The SS 1 ordinary steel slag powder was prepared by a jaw crusher, roll crusher and ball grinder, respectively. Superfine steel slag SS 2, SS 3 and SS 4 which taken SS 1 ordinary steel slag as raw materials, were superfine ground by a superheated steam powdered jet mill. The grinding system of the jet mill is illustrated in Fig. 1.. Download : Download high …
The results show that superfine blast furnace slag powder can be effectively used in cement with high contents. The strength of cement mortar with 70% superfine blast …
Effect of superfine slag powder on cement properties. Cem. Concr. Res. (2002) S.H. Liu et al. Study on the grinding kinetics of copper tailing powder. Powder Technol. (2018) ... Effect of environment conditions on volume deformation of blended cement mortars containing blast furnace slag and steel slag powder. 2024, Journal of Building ...
Section snippets Materials. 42.5 MPa Portland cement (ISO) and the superfine powder of phosphoric slag (SFPS) are used their compositions of which are shown in Table 1.The fineness of SFPS is about 600–800 m 2 /kg. Superplasticizer (NF) was from Tsinghua University. Methods. Ten centimeters of cube concrete specimens were used in the …
Effect of MgO and superfine slag modification on the carbonation resistance of phosphogypsum-based cementitious materials: Based on hydration enhancement and phase evolution regulation. ... Approximately 15 mg of PESSC powder was stored in an alumina crucible, and thermally treated from 25 °C to 1000 °C at a ramp rate of 10 °C per minute ...
Conclusion. (1) The Horsfield model is a beneficial tool to determine the diameter grade of the superfine powder to optimize the packing effect. The addition of slag powder …
Recently, the effect of using steel slag alone is not satisfactory and the performance of blended cementitious materials is expected to improve after compounding with other admixtures. 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.
In order to further investigate the effect of modifier and superfine steel slag powder on properties of magnesium oxysulfate (MOS) cement, the examinations of compressive strength, hydration products, and pore structure of various MOS cement mixtures are discussed in detail. The results show that malic acid helps the formation of 5Mg(OH)2 ...
This paper mainly studies the substitution effect of the superfine powder on cement after the use of superfine powder in concrete. The experiment shows that the superfine phosphor slag powder can significantly improve the performance of C60 high-performance concrete and has an important role in the retention value of 1h slump. The incorporation of …
