Alkaliactivated slag concrete Fresh and hardened
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Alkaliactivated slag concrete Fresh and hardened.

Alkali-activated slag concrete: Fresh and hardened ...

01/01/2018  The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology. Bingham models afforded a

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(PDF) Alkali-activated slag concrete: Fresh and hardened ...

The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to ...

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Alkali-activated slag concrete: Fresh and hardened ...

Abstract The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology.

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Cement and Concrete Composites - researchgate

Alkali-activated slag concrete: Fresh and hardened behaviour F. Puertas a, *, B. Gonzalez-Fonteboa b, I. Gonzalez-Taboada b, M.M. Alonso a, M. Torres-Carrasco a, G. Rojo b, F. Martínez-Abella b a ...

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Alkali activation of a high MgO GGBS – fresh and hardened ...

Alkali-Activation of a High MgO GGBS – Fresh and Hardened Properties Author 1 ... Alkali-activated concrete (AAC) ... industrial waste valorisation could be achieved successfully by using alkali-activated slag (AAS) as an alternative to Portland cement, and potentially with lower cost in regions where blast furnace slag (BFS) is plentiful and activators can be readily sourced. BFS is a by ...

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Alkali-activated slag concrete: Fresh and hardened ...

Abstract The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology.

Get Price

Alkali-activated slag concrete: Fresh and hardened behaviour

The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology. Bingham models afforded a good fit to all ...

Get Price

Alkali activation of a high MgO GGBS – fresh and hardened ...

Alkali-Activation of a High MgO GGBS – Fresh and Hardened Properties Author 1 ... Alkali-activated concrete (AAC) ... industrial waste valorisation could be achieved successfully by using alkali-activated slag (AAS) as an alternative to Portland cement, and potentially with lower cost in regions where blast furnace slag (BFS) is plentiful and activators can be readily sourced. BFS is a by ...

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Alkali activation of a high MgO GGBS – fresh and hardened ...

Magazine of Concrete Research. ISSN 0024-9831 E-ISSN 1751-763X. Volume 70 Issue 24, December, 2018, pp. 1256-1264. Prev Next > Alkali activation of a high MgO GGBS – fresh and hardened properties Authors: Abeer M. Humad. x. Abeer M. Humad . Search for articles by this author ...

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Alkali activated slag-fly ash concrete incorporating ...

10/06/2021  The fresh and hardened concrete properties of AASFC mixes were determined. ... The lower vitality utilization and decreased out flow of CO 2 has been related to the generation of alkali activated slag concrete (AASC), the commonly used activator for geopolymerisation is a mix of sodium hydroxide (NaOH) or potassium hydroxide (Palomo et al., 1999; Xu and Van Deventer, 2002). These

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Fresh and hardened properties of alkali-activated fly ash ...

15/01/2014  This paper presents results of an experimental study carried out to investigate fresh and hardened properties of alkali-activated fly ash/slag pastes with superplasticizers. The binders were prepared by dry mixing of slag and fly ash with 5 slag-to-binder ratios, 0, 0.3, 0.5, 0.7, and 1. An alkali activator was prepared from NaOH solution and sodium silicate solution. The polycarboxylate-based ...

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Content on Fresh and Hardened Properties of Alkali ...

E ect of the Sodium Silicate Modulus and Slag Content on Fresh and Hardened Properties of Alkali-Activated Fly Ash/Slag Xiaowei Ouyang 1, Yuwei Ma 1,2,*, Ziyang Liu 1, Jianjun Liang 1 and Guang Ye 3 1 Guangzhou University-Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, China; [email protected]

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Mix Design, Fresh and Hardened Properties and ...

Alkali-activated concrete (AAC) has recently emerged as a potential candidate to replace the conventional Portland cement concrete (PCC) in several applications due to its low CO2 footprint and promising mechanical properties. However, the robustness and the good reputation PCC has gained over the years make it difficult for this relatively new technology to be adopted at a larger industrial ...

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Alkali-activated slag cements produced with a blended ...

An alkali-activated slag cement produced with a blend of sodium carbonate/sodium silicate activator was characterised. This binder hardened within 12h and achieved a compressive strength of 20MPa after 24h of curing under ambient conditions, which is associated with the formation of an aluminium substituted calcium silicate hydrate as the main reaction product. Carbonates including pirssonite ...

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Performance and sustainability overview of alkali ...

13/08/2020  The effect of various factors on the performance of alkali-activated self-compacting concrete (AASCC) was discussed and a simplified sustainability assessment of AASCC was carried out. Discussions from this paper showed that AASCC with acceptable fresh and hardened properties can be achieved with the proper selection of materials. In addition ...

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Alkali-activated slag concrete: Fresh and hardened behaviour

The behaviour of fresh and hardened alkali-activated slag (AAS) and OPC concretes was compared and the effect of mixing time assessed. OPC and AAS concrete slump and rheological results proved to differ, particularly when the slag was activated with waterglass (WG). The nature of the alkaline activator was the key determinant in AAS concrete rheology. Bingham models afforded a good fit to all ...

Get Price

Alkali activation of a high MgO GGBS – fresh and hardened ...

Magazine of Concrete Research. ISSN 0024-9831 E-ISSN 1751-763X. Volume 70 Issue 24, December, 2018, pp. 1256-1264. Prev Next > Alkali activation of a high MgO GGBS – fresh and hardened properties Authors: Abeer M. Humad. x. Abeer M. Humad . Search for articles by this author ...

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Fresh and Hardened Properties of Portland Cement-Slag ...

In addition, fresh and hardened properties of OPC-slag concrete, activated by the alkali by-product, were assessed by examining the slump, bleeding, setting time, and compressive strength of concrete.

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Influence of seawater on alkali-activated slag concrete ...

12/05/2021  Wet-sieved pastes from fresh concrete were used to evaluate the mineralogical and microstructural characteristics of reaction products. Compressive strengths and chloride contents were measured with the hardened concrete samples. The activators used in alkali-activated slag concrete were sodium hydroxide (5% weight of slag) and liquid sodium silicate (5% weight of slag). The alkali-activated ...

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Alkali-activated slag cements produced with a blended ...

An alkali-activated slag cement produced with a blend of sodium carbonate/sodium silicate activator was characterised. This binder hardened within 12h and achieved a compressive strength of 20MPa after 24h of curing under ambient conditions, which is associated with the formation of an aluminium substituted calcium silicate hydrate as the main reaction product. Carbonates including pirssonite ...

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Fresh and Hardened Properties of Portland Cement-Slag ...

Fresh and Hardened Properties of Portland Cement-Slag Concrete Activated Using the By-Product of the Liquid Crystal Display Manufacturing Process Sung Choi 1 and Sukhoon Pyo 2,* 1 Department of ...

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What is Alkali-Activated Slag? Niumag Corporation

20/04/2019  Alkali-Activated Slag,AAS is a hydraulic-cementing material (Slag and fly ash have potential activity), with dry granulated blast furnace Slag as the main raw material, with appropriate amount of silicate cement clinker, a small amount of dihydrate gypsum, and an appropriate amount of Alkali activator, consisting of 80%~85% Slag, 5%~10% Alkali activator, and cement clinker.

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Properties of Alkali Activated Slag Concrete Incorporating ...

Alkali activated slag (AAS) has gained huge attention in recent years due to its ability to replace ordinary Portland cement (OPC) as a binder in concrete. A need to replace OPC is imminent due to the high carbon dioxide emitted into the environment during its production. However, the use of this type of binder did not eliminate the huge strain placed on the deposit of natural resources.

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Performance and sustainability overview of alkali ...

13/08/2020  The effect of various factors on the performance of alkali-activated self-compacting concrete (AASCC) was discussed and a simplified sustainability assessment of AASCC was carried out. Discussions from this paper showed that AASCC with acceptable fresh and hardened properties can be achieved with the proper selection of materials. In addition ...

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DURABILITY PERFORMANCE OF TERNARY BLEND ALKALI ACTIVATED ...

2.5.2.1 Effect of POFA on Fresh and Hardened Properties of Alkali Activated 25 2.5.2.2 Effect of POFA on Alkali Activated Durability 26 2.5.3 Ground Granulated Blast-furnace Slag 27 2.5.3.1 Effect of GBFS on Fresh and Hardened Properties of Alkali Activated 27 2.5.3.2 Effect of GBFS on Alkali Activated

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