According to ASTM C 125, admixture is defined as a material, other than basic raw materials, used in mortar and concrete to improve its certain properties and added immediately before or during mixing ... GGBFS is obtained from molten iron slag produced from blast furnace in water or steam, to a produce glassy and granular product …

1. Introduction. Ferronickel slag is a solid waste produced in the industrial ferronickel alloys smelting process [[1], [2], [3], [4]].It is a kind of granular solid slag obtained by cooling the discharged slag after nickel and iron were extracted by reduction [5].Approximately 14 tons of ferronickel slag is discharged when a ton of ferronickel …

different admixtures used in concrete are as a follows: (1) Silica fume (2) Metakaolin (3) POFA (4) RHA (5) GGBS. (6) Fly Ash. • Every admixture is partially replaced with cement at. different ...

To ameliorate the workability, measured by the slump loss test, different additives have been proposed: superplasticizer based on modified naphthalene formaldehyde polymers …

DOI: 10.1016/J.CONBUILDMAT.2012.02.085 Corpus ID: 135854309; Effect of blended steel slag–GBFS mineral admixture on hydration and strength of cement @article{Wang2012EffectOB, title={Effect of blended steel slag–GBFS mineral admixture on hydration and strength of cement}, author={Qiang Wang and Peiyu Yan and Guidong …

A modifying admixture based on Linear Alkyl Benzene Sodium Sulfonate (LAS) has also been evaluated as a workability and cohesiveness enhancer for steel …

In this study, the drying shrinkage and crack reduction characteristics of blast furnace slag concrete mixed with expansive and swelling admixtures were investigated. …

DOI: 10.1016/J.CONBUILDMAT.2021.123619 Corpus ID: 236300914; Influence of magnesium slag as a mineral admixture on the performance of concrete @article{Ji2021InfluenceOM, title={Influence of magnesium slag as a mineral admixture on the performance of concrete}, author={Guangxiang Ji and Xiaoqin Peng and Shupin …

Cement manufacturing is a major responsible source for environmental degradation, contributing around 8% of greenhouse gas emissions. This research aims to promote consciousness of the importance of supplementary cementitious materials (SCMs) in the construction industry for long-term sustainability. Multiple binary mixes were …

Wang et al. [9] found that the composite admixture of steel slag and ground blast furnace slag can eliminate the negative effect of steel slag on the pore structure of concrete. Han et al. [10 ...

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 …

Rheological tests on pastes— The rheological behavior of. alkali-activated slag and portla nd cement pastes was determined. along with the effect of different dosages of Admixtu r es PC 2, M, NF ...

Typically, the ground granulated blast furnace slag fineness is slightly more than that of the cement. There are different types of slag available like air-cooled slag, expanded or ed slag, granulated slag, and pelletized slag. From all of these only the granulated slag is normally utilized as a mineral admixture.

Chemical Admixtures and Ground Granulated Blast-Furnace Slag. Since most chemical admixtures perform well in plain Portland cement mixtures and in …

According to Richardson's research, Biernacki et al. [22] calculated the hydration kinetics of slag/CH system based on Knudsen's kinetic model, and obtained the activation energy of slag/CH system ...

Ultra-fine slag (UFS) is a microfine material obtained from slag through controlled granulation which is a by-product of a steel plant with non-toxic and environment-friendly nature [15], [16]. To produce geopolymers it can be used as an additive as it is rich in SiO 2 and CaO. UFS improves the characteristics of fly ash based GPC [16], [17].

This research aims to reveal the effect of phosphorus slag (PS) admixtures on the properties and hydration mechanism of circulating fluidized bed fly ash (CFA)-based multi-solid waste cementitious material (CWM). The results indicate that PS as an admixture is more helpful for improving the performance of CWM systems compared …

This study analyzes the feasibility of using stainless steel electric arc furnace(EAF)slag as composite cement admixture and the risk of leaching-out of heavy metals.The results show that the stainless steel EAF slag,mainly made up of Ca2SiO4,Ca3Mg(SiO4)2,some Cr-containing minerals and in small particle size,is easily ground and has cementitious …

Mixing 30 carbonated steel slag powder with P 42.5 % % ·I at 7 days and 47.5MPa at 28 days, along with a flexural strength of 6.2MPa at 7 days and 8.0MPa at 28 days. The addition of carbonated steel slag powder not only enhances the mechanical properties but also reduces the pore diameter in the hardened cementitious system. In 7 …

The influence of the fineness and content of steel slag powder on the properties of composite admixture was studied by uniform experimental design. The fitting regression equation between the ...

Abstract. To promote the large-scale application of ground granulated blast furnace slag powder (GGBFS) in the cement and concrete industry, high-performance …

A composite mineral admixture was prepared by grinding a mixture of steel slag and silica fume (steel slag/silica fume ratio is 92:8 or 84:16, by mass). A layer of silica fume was uniformly ...

Functions of Admixture: To accelerate the initial set of concrete, i.e. to accelerate the rate of strength development at an early age. To dim the initial set i.e. to keep the concrete in a working position for a longer time for placement. Also, to enhance workability. To improve the penetration (flowability) and permeability of concrete.

slag shows a great improvement in compressive strength. Similarly, there were many other studies on the carbonation of steel slag [31–33], furnace slag [34], fly ash [35–39], and slag [40]. When MS was exposed to a CO2-rich environment, it was easily carbonated to form calcite. Normally, both CaO and MgO contained in the MS can be …

The magnesium slag is discarded from production of magnesium metal from dolomite. However the magnesium slag is slaked in some factories by means of sprinkling water to prevent from dust pollution. The possibility of slaked magnesium slag (SMS) to play a role of mineral admixture for concrete was investigated by experiments of mortars …

Materials. (1) Cement: For the blast furnace slag concrete test, OPC with a neness of 3,483 cm2/g produced in Korea was used as shown in Tables 3 and 4. 1. (2) GGBS: In addition to cement, GGBS ...

Abstract. Shrinkage-reducing admixture (SRA) efficiency as a shrinkage mitigation technique has been proven for the alkali-activated slag (AAS) system. However, the controlling mechanism is a debatable subject. Moreover, it has been reported that SRA may retard strength development and slag hydration.