Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag

Kuo, Wen-Ten; Wang, Her-Yung; Shu, Chun-Ya

doi:10.1016/j.conbuildmat.2014.04.017

Cited by 54 publications

(19 citation statements)

References 20 publications

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“…6) Magnesium oxide: The addition of magnesium oxide can improve the resistance of concrete to carbonation, chloride attack, and sulfate attack in the long-term [58]. 7) Superplasticizer: Proper amount of superplasticizer in concrete mix can cause high water reduction, thus reducing sulfate attack on the concrete and producing a more robust matrix [45]. 8) Barium carbonate: A new approach to producing sulfate-resistant cements was the addition of barium carbonate to clinker.…”

Section: Deterioration Caused By Sulfate Attackmentioning

confidence: 99%

“…Some effective methods that can eliminate negative effects of sulfate attack are presented as: 1) Mineral additions: The incorporation of ground granulated blast furnace slag into the cement is beneficial for the enhancement of diminution of expansion for concrete structure stored in sulfate solutions since slag will consume calcium hydroxide to some degree and lead to diminution of the gypsum and ettringite [45]. It was reported that the incorporation of more than 30% of low reactivity ground granulated blast furnace slag led to a notable enhancement of the mortars efficiency against sodium and magnesium sulfate attacks [46].…”

Section: Deterioration Caused By Sulfate Attackmentioning

confidence: 99%

See 1 more Smart Citation

Recent durability studies on concrete structure

Tang

Yao

Andrade

2015

Cement and Concrete Research

448

121

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Section: Deterioration Caused By Sulfate Attackmentioning

confidence: 99%

Section: Deterioration Caused By Sulfate Attackmentioning

confidence: 99%

Recent durability studies on concrete structure

Tang

Yao

Andrade

2015

Cement and Concrete Research

448

121

View full text Add to dashboard Cite

“…e specific gravity of CaS compound and unreacted CaO is low; therefore, they float to the top of the molten steel and mix into the slag layer. e slag produced in the desulfurization process is DS [25,26].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength and Microstructure Properties of Alkali-Activated Systems with Blast Furnace Slag, Desulfurization Slag, and Gypsum

Cho

Koo²,

Choi

2018

Advances in Civil Engineering

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This study investigates the effect of desulfurization slag (DS) and gypsum (G) on the compressive strength and microstructure properties of blast furnace slag-(BFS-) based alkali-activated systems. DS is produced in a Kambara reactor process of molten iron produced in a steel production process. DS contains CaO, SiO2, Fe2O3, and SO3 and is composed of Ca(OH)2 and 2CaO·SiO2 as main compounds. In this investigation, the weight of BFS was replaced by DS at 5, 10, 15, 20, 25, and 30%. In addition, G was also applied at 9, 12, and 15% by weight of BFS to improve the compressive strength of the alkali-activated system with BFS and DS. According to this investigation, the compressive strength of the alkali-activated mixes with BFS and DS ranged from 14.9 MPa (B95D5) to 19.8 MPa (B90D10) after 91 days. However, the 28 days compressive strength of the alkali-activated mixes with BFS, DS, and G reached 39.1 MPa, 45.2 MPa, and 48.4 MPa, respectively, which were approximately 78.8 to 97.5% of that of O100 mix (49.6 MPa). The main hydrates of the BFS-DS (B80D20) binder sample were Ca(OH)2, CaCO3, and low-crystalline calcium silicate hydrates, while the main hydration product of BFS-DS-G (B75D10G15) binder was found as ettringite. The use of BFS-DS-G binders would result in the value-added utilization of steel slag and provide an environmentally friendly construction material, and contribute to a reduction of CO2 in the cement industry.

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“…Granulated BFS usually contains certain amount of alumina, silica and calcium oxide, thus making it perspective source for production of construction materials. Production of high quality cement-free binders using gBFS as a source shows several advantages -such as reduction of ecological threats, usage of local source for road and civilian building etc [4,5].…”

Section: Introductionmentioning

confidence: 99%

Cement-free Binders for Radioactive Waste Produced from Blast-furnace Slag using Vortex Layer Activation Technology

et al. 2017

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The paper addresses the issue of recycling granulated blast-furnace slag (gBFS) as a source for production of cement-free binder materials for further usage in rare-earth metals production for radioactive waste disposal. The use of the vortex layer activator was provided as main technique allowing to produce high-dispersed chemically activated binders. The paper examines the effect of processing conditions on the physical-chemical and mechanical properties of the resulting BFS-based cement-free materials and gBFSbased concretes.

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Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag

Cited by 54 publications

References 20 publications

Recent durability studies on concrete structure

Recent durability studies on concrete structure

Compressive Strength and Microstructure Properties of Alkali-Activated Systems with Blast Furnace Slag, Desulfurization Slag, and Gypsum

Cement-free Binders for Radioactive Waste Produced from Blast-furnace Slag using Vortex Layer Activation Technology

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