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No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The specific surface area of NS and manufactured sands was approximately the single digits (m 2 /kg) while the specific surface area of stone powders was several hundreds or thousands (m 2 /kg) [34] [35]. The surface area provided by particles was hundreds of times less than that provided by stone powders.
The analysis results indicate that the incorporation of steel slag powder (SSP 3) may have adverse effects on the initial setting time, volume stability, compressive strength, …
Particle size distribution (PSD) is an essential property of cement. The only standard method to measure the PSD of cement, namely ASTM C115 is limited in scope; this standard describes a method ...
So, in this paper, one kind of more environment-friendly cement with three different specific surface areas will be studied. Supersulfated cement (SSC) is a kind of cement with less clinker or even without clinker, which contains almost 80% ground granulated blast furnace slag, 15% gypsum as sulfate activator and less than 5% clinker or lime as alkali activator [9], [10], [11].
Relevant studies have shown that the hydration heat of steel slag is significantly lower than cement, making it highly promising for use in large-volume concrete (Carvalho et al. 2023, …
This paper summarizes and analyzes the relevant research on steel slag powder (SSP) as a cementitious material, studies the effect of SSP replaces cement as single or multiple admixtures, with different specific …
This paper describes the influence of the specific surface area of blast-furnace slag and the existence of calcium sulfate in blast-furnace slag on the effect of calcium hydroxide powder, which is ...
The influence of slag on the heat of hydration is described by many authors [19,20,21]. These sources indicate that GGBFS reduces the amount of hydration heat released and the intensity of hydration heat evolution. ... The specific surface area of cement has a similar effect but is more significant than that of slag due to the higher reactivity ...
Liu Guojun[6] studied the effect of lithium slag on fresh properties and surface area of concrete. WangGuoqiang [7] also studied the effect of lithium slag on strength and crack resistance. However,
1. Introduction. Admixtures are added in concrete to improve the quality of concrete. Mineral admixtures include fly ash (FA), silica fume (SF), ground granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA) which possess certain characteristics through which they influence the properties of concrete differently.The reported …
The linear equations in Figure 4b show that the CS ratio could reach 100 for the specific area of 382 m 2 /kg at the age of 28 days and the specific area of 576 m 2 /kg at the age of 7 days under ...
Some properties of concrete added steel slag powder with different specific surface area were studied in this paper. The property and microstructure of the concrete were investigated by ...
Materials. The specific gravity of 53 grade Ordinary Portland Cement (OPC) of 3.13 is used in accordance with IS 12269-1987 18.For this mixture, Sand from rivers conforms to IS: 383-1970 19 ...
The bulk density of GGBS ranges from 1200 to 1670 kg/m 3, roughly equal to that of cement at 1440 kg/m 3. The surface area of GGBS ranges from 4250 to 4700 cm 2 /g, which is considerably more than the surface area of cement at 3310 cm 2 /g. The larger surface area of GGBS needs more mortar to cover it, leading to less paste being accessible for ...
In the case of different dosage, the influence of specific surface area of phosphorus slag on cement strength is shown in Figure 4. The results show t hat the specific surface area of phosphorus ...
When the additive content is 5‰ of cementitious material, the specific surface area of the lithium slag power is 901 m2/kg, and when lithium slag instead of 12% cement, the cement has a better ...
The experimental results show that the influence of steel slag powder on water requirement of normal consistency of cement is in relation to its specific surface area, and the value of decreases for steel slag powder with a lower-specific surface area while increases with a higher-specific surface area. The partial replacement of cement by ...
This literature review found that steel slag increases the fluidity of cement-based materials, with a setting time approximately 210% to 300% longer than that of Portland cement …
The degrees of hydration of slag powders with specific surface area ranging from 300 to 800m2/kg were calculated to illustrate the enhancement of pozzolanic effect. ... of their influence on the ...
The objective of this work was to examine the influence of carbonation on the microstructure of cement materials. Different materials, which were CEM I mortar and paste, CEM II mortar and paste, were carbonated at 20 °C, 65 % relative humidity and 20 % of CO2 concentration. The specific surface area and pore size distribution were determined from two …
Huo et al. used formic acid to activate steel slag and found that the modified steel slag's roughness and specific surface area significantly increased, promoting early hydration of cement while consuming free calcium oxide in the steel slag to improve stability. For all this, the long-term strength of cement is minimally affected by acid ...
The specific surface area of cement has a similar effect but is more significant than that of slag due to the higher reactivity at the beginning of the hydration process [28] [29] [30]. Although ...
AbstractMechanical grinding was used to increase the specific surface area of cement in order to increase the dosage of phosphorus slag (PS) in Type P·O 42.5 cement. X-ray diffraction, hydration … Expand
Additionally, the small particle size and large specific surface area of the slag result in a thinner water lubrication layer between the cementitious material particles at the same water content, further reducing the fluidity of the paste [36]. Comprehensive analysis shows that 10 % slag has little effect on the fluidity of S-MSPPC paste and ...
The SF showed results of a specific surface area much higher than the PC and the QP 43,44,45, it seems that the particle size of the SF is relatively smaller than the PC and the QP.
Based on the test results of laser particle size analyzer, specific surface area analyzer and infrared spectrometer, the grinding kinetics of coal gasification slag (CGS) was systematically described by using Divas–Aliavden grinding kinetics, Rosin–Rammler–Bennet (RRB) distribution model and particle size fractal theory. The influence of grinding time and …
Influence of Steel Slag Type on Concrete Shrinkage. December 2020; Sustainability 13(1):214; ... Cement and slag chemical composition, densit y and specific surface area. (Data provided . by the ...
The improper treatment of steel slag (SS) will cause serious environmental problems. Therefore, appropriate management and disposal practices are essential to mitigate the potential environmental risks. This paper delineated the impact of steel slag on cement-based materials' working performances. The paper provides an exhaustive overview of the …
It was found that owing to the packing effect, the porosity and pore size distribution of the pastes were improved; because of the more complete hydration of the superfine slag …
