A Study on Geopolymer Mortar Containing Fly Ash and Dredged Clay

Lekshmi, Sreedevi; Sudhakumar, J.

doi:10.1007/978-3-031-12011-4_84

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The aluminosilicate rich source materials are activated by an alkaline medium. Fly ash [3], ground granulated blast furnace slag (GGBS) [4], red mud [5], rice husk ash [6], palm oil fuel ash [7], metakaolin [8], sugarcane bagasse ash [9], dolomite [10][11][12][13], clay [14][15][16][17], etc are commonly used as source materials in geopolymers. The combination of sodium based silicates and hydroxides or potassium based silicates and hydroxides, as alkaline activators have been employed in developing geopolymer binders [12].…”

Section: Introductionmentioning

confidence: 99%

The Potential use of Bio-mineralization Technique in Developing Eco-Sustainable Self-Healing Geopolymer Binder: A Systematic Review

Lekshmi,

Benjamin,

Sudhakumar

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The enormous demand for concrete as a construction material over the globe has proliferated the production of cement. It has been reported that the production of one ton of cement produces approximately one ton of carbon dioxide gas to the atmosphere. In geopolymer system, the use of cement is eliminated by using aluminosilicate rich industrial and agricultural waste as source material, which is activated by an alkaline medium. Biomineralization in concrete by using microorganisms is a technique used to enhance the mechanical and durability performance of concrete by imparting self-healing of cracks generated in the system. This paper reviews the feasibility of microbial inclusion in geopolymers. In this review, the mechanical and durability characteristics of microbial geopolymer binders along with the observations of microstructural characterization are elucidated. The mechanical properties in terms of compressive strength, split tensile strength and flexural strength are studied systematically from the existing literature. The durability studies of bio-mineralized geopolymer binder (BMGP) in terms of water absorption, sorptivity, acid attack resistance, sulphate attack resistance and resistance towards freeze thaw effect are analysed in the study. Also, the possible applications of biomineralized microbial geopolymer concrete are critically reviewed in this paper

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Section: Introductionmentioning

confidence: 99%

The Potential use of Bio-mineralization Technique in Developing Eco-Sustainable Self-Healing Geopolymer Binder: A Systematic Review

Lekshmi,

Benjamin,

Sudhakumar

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Previous research has demonstrated the way that a decent overall execution could be accomplished when alkali activated material is made by Fly Ash (FA), Ground Granulated Blast Furnace Slag (GGBFS), sodium silicate and sodium hydroxide [3][4][5][6][7][8][9]. Few other varieties of precursors include red mud, metakaolin, rice husk ash, bagasse ash, sewage sludge ash, coal bottom ash, waste ceramic, laterite soil, waste clay etc [10,11,12]. Compared to all other potential precursors, slag and fly ash-based alkali activated 1237 (2023) 012003 IOP Publishing doi:10.1088/1755-1315/1237/1/012003 2 materials (BFS/FA-AAM) has quick strength acquiring under ambient curing.…”

Section: Introductionmentioning

confidence: 99%

Effect of sucrose on slag-fly ash-based alkali activated paste

Thomas,

Sreeja,

Muhsin Lebba

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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One of the major concerns in the concrete industry is to improve the sustainability by adopting durable concrete with low energy intensity. This resulted in the remarkable progress on Alkali Activated Concrete (AAC). The AAC consists of a binder system made of a solid aluminosilicate source powder as precursor which needs to be activated by a solid or dissolved alkali activator. Considering the strength as well as durability, Alkali Activated Materials (AAM) has proved to be a novel material that could potentially replace the Ordinary Portland Cement (OPC). The properties of AAM including lower carbon footprint, valorization of industrial waste materials, sustainable as well as economical characteristics has resulted in an increased research interest. Among variety of precursors available, slag based AAM has the ability to acquire strength under ambient curing. But the factors keeping it away from a wide acceptance includes its fast setting as well as low workability. This paper describes the study on effect of sucrose, a bio-additive in slag-fly ash based AAM for improving its setting time and workability. From the experimental results, sucrose has been proven as a good retarder and helps to improve the workability.

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A Study on Geopolymer Mortar Containing Fly Ash and Dredged Clay

Cited by 2 publications

References 11 publications

The Potential use of Bio-mineralization Technique in Developing Eco-Sustainable Self-Healing Geopolymer Binder: A Systematic Review

The Potential use of Bio-mineralization Technique in Developing Eco-Sustainable Self-Healing Geopolymer Binder: A Systematic Review

Effect of sucrose on slag-fly ash-based alkali activated paste

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