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Mechanical and durability properties of alkali-activated fly ash ...

2021年9月27日  This study investigates the physical and durability properties of alkali-activated fly ash concretes with increasing slag content. The engineering properties examined include

Mechanical properties and durability of alkali-activated steel slag ...

2023年7月2日  Alkali-activated cement (AAC) is either clinker-less or free, and it is also environmentally friendly due to its low carbon footprint and wide range sources. Industrial

Mechanical and durability properties of alkali activated slag

2018年2月8日  Mechanical and durability performances of alkali activated slag (AAS) mortars are evaluated. Nanosilica at the dosages of 2% and 4% and silica fume at the dosages of 5%,

Mechanical properties and durability of alkali-activated steel slag ...

Alkali-activated cement (AAC) is either clinker-less or free, and it is also environmentally friendly due to its low carbon footprint and wide range sources. Industrial wastes, like steel slag and

Investigation on the compressive strength and durability

2024年3月1日  This paper presents the properties of alkali-activated slag (AAS) mortar additivated with a superabsorbent polymer (SAP) to improve its mechanical and durability

Durability of slag-based alkali-activated materials: A critical review ...

2024年4月1日  In binary precursors, the presence of fly ash in slag can result in an improvement of over 10% in compressive strength of the binary-based alkali-activated materials after

A Review on the Durability of Alkali-Activated Fly

2016年4月22日  Some groups believe that the availability of wide scientific/technical background, together with the already-known OPC durability problems, are sufficient for their commercialization; however, others consider

Experimental Study on the Durability of Alkali‐Activated Slag ...

2021年7月12日  The results showed that alkali-activated slag concrete had an excellent freeze-thaw resistance, which was significantly affected by the water-to-slag ratio and compressive

Study on Mechanical Properties and Durability of Alkali

2022年10月6日  Alkali-activated materials are produced by chemically polymerizing the aluminosilicate materials using alkaline activators, which can effectively lower the greenhouse-gas emissions (approximately 73%) released

A critical review on application of alkali activated slag as a ...

2019年12月1日  The final setting time of AAS activated with sodium silicate was found to reduce with increase in SiO 2 /Na 2 O ratio and increases with increase in sodium concentration [89].. 4.2.2. Effect of chemical admixtures. Early studies have shown that the use of phosphate and borate within the range of 1–2% by mass of the slag can be used to retard the setting time of

A Review of Durability and Strength Characteristics of

2019年4月12日  Alkali-activated slag (AAS) is a promising alternative to ordinary Portland cement (OPC) as sole binder for reinforced concrete structures. OPC is reportedly responsible for over 5% of the global CO2 emission. In addition,

Durability of alkali-activated fly ash-slag concrete- state of art

2024年5月25日  Abhishek HS, Prashant S, Kamath MV, Kumar M (2022) Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review. Innov Infrastruct Solut 7:1–4. Article Google Scholar Albitar M, Mohamed Ali MS, Visintin P, Drechsler M (2017) Durability evaluation of geopolymer and conventional concretes.

Ethylene Vinyl Acetate Copolymer Emulsion-Modified Alkali-Activated

2024年4月25日  The experimental results demonstrated that adding EVA can enhance the shrinkage and strength of alkali-activated slag mortar, but that the materials exhibit poor resistance to sulfate attack. Optimizing the ratio design can yield alkali-activated cementitious materials with high strength, good durability, high bonding strength, and low shrinkage.

Workability and mechanical properties of alkali activated slag

1999年3月1日  Slump loss versus time is summarised in Fig. 1 Slag activated by powdered sodium silicate and lime slurry (AAS1) demonstrates considerably better workability than the other concrete mixes, including OPC. At 30 min, AAS1 demonstrates better slump than the initial slump; this is most likely due to further dissolution of the powdered sodium silicate into the mixing water.

Mechanical and durability assessment of slag based alkali-activated

2024年10月4日  Cement concrete is a popularly used construction material that creates a high emission of carbon footprint. To address contemporary issue nowadays, Alkali Activated Binders (AAB) products’ inclusion of industrial wastes has shown a sustainable and environmentally friendly system with appropriate strength and durability. This study explores the production of

Setting Time, Workability and Strength Properties of Alkali Activated ...

2021年2月11日  Alkali activated materials are gaining the researchers attention in replacement for cement in traditional concrete. One ton of CO2 is liberated into the atmosphere to produce 1 ton of cement. Therefore, cement replacement with alkali activated materials in the construction industry decreases the pollution in two ways: reducing CO2 emissions in the atmosphere by

(PDF) Strength and Durability Properties of Alkali Activated Slag

In this paper, mechanical and short-term durability properties of fly ash and slag based geopolymer concretes (FAGPC-SGPC) were investigated. The alkaline solution was prepared with a mixture of sodium silicate solution (Na2SiO3) and sodium hydroxide solution (NaOH) for geopolymer concretes.

Durability assessment of alkali activated slag (AAS) concrete

2012年2月10日  The environmental impact from the production of cement has prompted research into the development of concretes using 100% replacement materials activated by alkali solutions. This paper reports research into the durability of AAS concrete. The durability properties of AAS have been studied for a range of sodium oxide dosages and activator modulus. Properties

Mechanical properties and durability of alkali-activated steel slag ...

Mechanical properties and durability of alkali-activated steel slag– blastfurnace slag cement Jing-xiong Zhong1 • Li-ying Cao2 • Mei Li3 • Shu-ping Wang1 • Fang Liu1 • Xue-wei Lv1 • Xiao-qin Peng1 Received: 3 December 2022/Revised: 25 January 2023/Accepted: 28 January 2023/Published online: 2 July 2023

Study of Mechanical Properties and Durability of

2020年12月7日  Herein, a new geopolymer is recognized as a potential alternative cementing material of ordinary Portland cement (OPC), which is used for reducing carbon emissions and efficiently recycling the waste. Therefore

Mechanical and durability properties of alkali activated slag

2018年2月8日  Mechanical and durability performances of alkali activated slag (AAS) mortars are evaluated. Nanosilica at the dosages of 2% and 4% and silica fume at the dosages of 5%, 7.5% and 10% were incorporated into mortar mixtures as ground granulated blast furnace slag (GGBFS) replacement.

Mechanical properties and microstructure evolutions of alkali-activated

2024年8月15日  This paper studies the effect of centrifugation rotation rate on the compressive strength and microstructure of alkali-activated slag (AAS) paste. The results indicate that the compressive strength gradually improves with increase in centrifugation rotation rate and the maximum compressive strength is 71.8 MPa at 5000 rpm with increasing amplitude of 133.8%

Strength and durability characteristic of alkali activated GGBS ...

2019年6月30日  The present paper discusses the strength and durability properties of the stabilized red mud using alkali (Na 2 SiO 3) activated ground granulated blast furnace slag (GGBS) and its microstructural property for possible application as a geo-material.

Alkali-activated slag (AAS) paste: Correlation between durability

2021年1月18日  The merits of alkali-activated slag (AAS) pastes over OPC pastes such as high strength, eco-friendliness, good setting, and rapid strength gain make them suitable materials for repair purposes. In a previous study, the effect of NaOH concentration, SS:SH ratio, and silica fume (SF) inclusion on the setting time, porosity, and mechanical strength of AAS pastes was

A review on alkali-activated slag concrete - ScienceDirect

2021年6月1日  Durability of GGBFS/metakaolin-based alkali activated concrete. [67] 2013: Lee: Alkali-activated FA/GGBFS concrete cured at room temperature. [68] 2014: Yuan et al. Shrinkage compensation for alkali-activated slag concrete. [69] 2015: Thomas and Peethamparan: Engineering properties of AAC. [70] 2016: Ding et al. Mechanical properties of AAC ...

Microstructure Change and Phases Evolution of Alkali-Activated Slag ...

2024年9月12日  This article reports a study on the performance of the alkali activated slag (AAS) mortars upon exposing to the elevated temperatures. Two cooling methods (i.e., cooling in air and water-spring) were adopted following the heating treatment. The mechanical properties, durability, microstructure and phase evolution of AAS and OPC after heating-cooling process were

Strength and durability properties of alkali activated slag and

摘要： The research focuses on the strength and durability properties of alkali activated slag (AAS) and fly ash based geopolymer concrete. Although there are numerous studies that have assessed the suitability of AAS and fly ash based geopolymer as the binder in concrete, the main focus of these studies has been the strength properties and durability in terms of chemical attack.

Study on compressive strength and durability of alkali-activated

2020年5月15日  Study on compressive strength and durability of alkali-activated coal gangue-slag concrete and its mechanism. Author links open overlay panel Hongqiang Ma a b, Hongguang ... Mechanical and microstructural properties of alkali-activated slag and slag + fly ash mortars exposed to high temperature. Constr. Build. Mater., 217 (2019), pp ...

Mechanical Properties and Durability of Fiber Reinforced Alkali ...

2017年9月20日  Alkali activated slag (AAS) concrete can be considered as a more environmentally friendly alternative to conventional concrete. The presence of cracks in the concrete matrix can have major impacts on its mechanical properties and permeability, and thereby on its durability.