strength and durability properties of alkali activated slag

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Durability of alkali activated slag in a marine ...

· influence of alkaline activator chemistry on the compressive strength and dura-bility of alkali-activated slag (AAS), which was exposed to the damaging sea-water environment. The porosity of AAS was found to be the most important factor with regards to the strength and durability of these materials in marine environment.

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Properties and Durability of Alkali-Activated Slag Concrete

· Abstract: Formulates the proportioning of concrete mixes made with ground granulated blast furnace slag activated with sodium silicate, and determines their properties and durability. Six mixes were made with a solution having silicate modulus Ms = 1.47 and one mix with sodium silicate of Mu0019s = 1.22. All the mixes were air-entrained.

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A Review of Durability and Strength …

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, slag is an industrial by-product that must …

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Durability Properties of Alkali Activated Slag Composites ...

· Despite the advances in studies utilizing industrial, construction and agricultural wastes as alternative materials for concrete making, there are still gaps to be covered on the durability characteristics of most materials. This study presents a shot overview on the durability properties of alkali-activated slag (AAS) composites. The durability properties of AAS explored include permeability ...

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Strength and Durability Properties of Alkali Activated ...

· Strength and Durability Properties of Alkali Activated Slag and Fly Ash-Based Geopolymer Concrete A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy Andi Arham Adam M.Sc(Eng) School of Civil, Environmental and Chemical Engineering RMIT University Melbourne, Australia August 2009

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Setting Time, Workability and Strength Properties of ...

· Setting Time, Workability and Strength Properties of Alkali Activated Fly Ash and Slag Based Geopolymer Concrete Activated with High Silica Modulus Water Glass. Gugulothu Vikas 1 & T. D. Gunneswara Rao 1 Iranian Journal of Science and Technology, Transactions of Civil Engineering volume 45, pages 1483–1492 (2021)Cite this article

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(PDF) A Review of Durability and Strength …

· Compressive strength after 7 and 28 days of curing, and total porosity of 100 mm × 100 mm × 100 mm cubes of OPC concrete (OPCC), alkali-activated slag (AAS) activated using water glass (AAS-WG ...

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DURABILITY AND MECHANICAL PROPERTIES OF ALKALI …

This paper reports on an experimental program investigating the durability and mechanical properties of alkali activated slag concrete (AASC). The AASC was prepared using ground granulated blast ...

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of Alkali-Activated Slag Concrete

Compressive strength development of 16 mm 16 mm 160 mm alkali-activated slag (AAS) mortar samples activated using water glass compared to potassium hydroxide [3]. 2.2.

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Study on compressive strength and durability of alkali ...

Abstract In this paper, AACGS concrete was prepared by using raw and 700 °C calcined coal gangue as the coarse aggregate and alkali-activated coal gangue-slag (AACGS) as the cementitious material. The variation of compressive strength and durability of AACGS concrete was studied, and the durability damage mechanism of AACGS concrete is analyzed in depth by SEM.

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Durability of alkali-activated fly ash and slag concrete ...

Prior to durability test, the compressive strength of investigated mixtures was determined at early ages (1, 7 days) and after 28, 56, 90 days curing. The slag-rich mixtures have shown high compressive strength values (~45MPa after 1 day and ~80MPa after 28 days curing). Excellent mechanical properties have been also found for the fly ash-rich ...

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A Review on Strength and Durability characteristics of ...

· A Review on Strength and Durability characteristics of Alkali Activated Binders Sk.Khaleel1, Dr.L.Sudheer Reddy2 1Research scholar, ... on properties like strength and durability either by partially ... residual slag as fine aggregate and coarse aggregates were

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A Review of Durability and Strength …

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 …

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Mechanical and durability properties of alkali-activated ...

· The fly ash, slag and Portland cement were the same powder binding materials as used in previous studies. Their oxide compositions and loss on ignition (LOI) obtained by X-ray florescence are shown in Table 1.Further details regarding their mineralogy and particle size distribution are available in previous publications,, .The alkali-activated binders were activated by solutions of sodium ...

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Strength, Fracture and Durability Characteristics of ...

The alkali-activated materials or geopolymers are developed by enhancing the reaction process of industrial waste products or geological materials rich in silica and alumina content, such as fly ash, slag and metakaolin, through alkaline reagents, along with the incorporation of fine aggregates [1,2].These cement-free alkali-activated materials, having better mechanical, durability and ...

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Mechanical and durability properties of alkali activated ...

· 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.

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A Review of Durability and Strength Characteristics of ...

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 CO 2 emission. In addition, slag is an industrial by-product that must be land-filled if not re-used.

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CHARACTERISTICS AND DURABILITY OF ALKALI …

· The characteristics and durability of alkali activated GBFS and MS mixes were studied. Chemically combined water, combined slag contents as well as compressive strength increase with MS up to 4 mass %, then decreases with MS up to 8 mass %. Increase of MS content up to 8 mass %, the compressive strength shows a lower values at early ages (3-14 ...

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Mechanical properties and durability of alkali-activated ...

The mechanical properties and durability of this coating layer should be studied. In this study, the mechanical properties and durability of alkali-activated slag repair mortars with silica fume (SF) participation as inorganic additives against freeze-thaw and salt scaling attacks have been investigated.

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Strength and Durability Performance of Alkali-Activated ...

· It is possible to achieve compressive strengths of 31 N/mm 2 and 45 N/mm 2, respectively for the 10 M alkali-activated geopolymer mortar after 7 and 28 days of casting when cured for 24 hours at 60°C. Results indicated that the increase in curing period and concentration of alkali activator increased the compressive strength. Durability ...

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MECHNICAL STRENGTH AND DURABILITY OF ALKALI …

· Key words: mechanical strength, durability, alkali-activated fly ash/ slag (AAFS) fly ash/slag ratio, sodium oxide, activator modulus ratio. ABSTRACT This study investigated the mechanical strength and dura-bility of alkali-activated binders composed of blends of fly ash (FA) and ground granulated blast furnace slag. Five samples with FA/slag ...

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Properties and durability of alkali-activated ladle slag ...

· The aim of this study is to investigate the durability of the alkali activated ladle slag mortar and the effect of aggregate content on the properties. The mechanical strength tests were carried out at 7, 28, 56 and 90 days. In addition, the samples were subjected to drying shrinkage, freeze–thaw, and water absorption tests.

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What is Alkali-Activated Slag? | Niumag Corporation

· 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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Strength and durability properties of alkali activated ...

Download Citation | On Jan 1, 2009, A Adam published Strength and durability properties of alkali activated slag and fly ash-based geopolymer concrete | Find, read and cite all the research you ...

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Physico-chemical, mechanical, microstructure and ...

· shrinkage as well as the residual compressive strength behaviour of alkali activated slag paste (AASP) up to 1200 C were investi-gated [15–22]. The workability, durability and strength are affected by the type and concentration of the alkaline activator, solution ratio (Ms = SiO 2/Na 2O), slag type, ﬁneness, curing condi-

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A Review on the Durability of Alkali-Activated Fly Ash ...

the latest trends on durability of alkali-activated ﬂy ash and/or slag focused on their resistance to sulfate attack, freeze−thaw cycle, chloride ingress, carbon dioxide penetration, acid, and

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Study of Mechanical Properties and Durability of Alkali ...

The alkali activation of waste materials (e.g., metakaolin, coal gangue, fly ash, or slag) has become an important area in the development of new green cements (inexpensive and environment-friendly) [] and can be formulated by wastes and activator.Under extremely high OH − concentrations, Si–O–Si– and –Si–O–Al– vitreous body structure is rapidly dissolved into solution to form ...

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Mechanical and Durability Properties of Alkali Activated ...

· strength and permeability. The main objectives of this work is to determine effects of alkaline solution type and concentration, modulus of sodium silicate, sodium silicate to alkaline solution ratio and natural pozzolan replacement on the mechanical properties of …

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(PDF) Durability assessment of alkali activated …

the strength gain and durability properties of AAS. concrete. ... alkali activated slag concretes, ﬂy ash, silica fume, slag, and. Materials and Structures (2012) 45:1425–1437 1435.

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Durability assessment of alkali activated slag (AAS ...

· The environmental impact from the production of cement has prompted research into the development of concretes using 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 investigated have included ...

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