Influence of biogenic treatment in improving the durability properties of waste amended concrete: A review

Joshi, Sumit; Goyal, Shweta; Reddy, M. Sudhakara

doi:10.1016/j.conbuildmat.2020.120170

Cited by 31 publications

(8 citation statements)

References 132 publications

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“…These microbial pathways include enzyme activity, oxidation–reduction reactions, or photosynthesis processes. Microorganisms can release organic acids, electron donors, and enzymes into the extracellular environment through passive diffusion, secretion, and active pumping [ 11 , 12 , 13 , 14 ]. Again, this impacts the extracellular environment, which can induce precipitation.…”

Section: Biochemical Processesmentioning

confidence: 99%

Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste

Wilcox,

Mulligan,

Neculita

2024

Toxics

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Mining waste represents a global issue due to its potential of generating acidic or alkaline leachate with high concentrations of metals and metalloids (metal(loid)s). Microbial-induced calcium carbonate precipitation (MICP) is an engineering tool used for remediation. MICP, induced via biological activity, aims to precipitate calcium carbonate (CaCO3) or co-precipitate other metal carbonates (MCO3). MICP is a bio-geochemical remediation method that aims to immobilize or remove metal(loid)s via enzyme, redox, or photosynthetic metabolic pathways. Contaminants are removed directly through immobilization as mineral precipitates (CaCO3 or MCO3), or indirectly (via sorption, complexes, or inclusion into the crystal structure). Further, CaCO3 precipitates deposited on the surface or within the pore spaces of a solid matrix create a clogging effect to reduce contaminant leachate. Experimental research on MICP has shown its promise as a bioremediation technique for mining waste. Additional research is required to evaluate the long-term feasibility and potential by-products of MICP-treated/stabilized waste.

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Section: Biochemical Processesmentioning

confidence: 99%

Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste

Wilcox,

Mulligan,

Neculita

2024

Toxics

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“…The resulting building composites significantly exceed the traditionally produced performance characteristics with a clinker component saving of 50-70% and are comfortable for the human environment [39]. Technology has been developed for producing wall materials with autoclave hardening through the use of clay rocks at an imperfect phase of mineral development with the possibility of reducing the time and pressure of autoclaving to 2-4 atm [40]. These rocks make it possible to control the structure formation processes of new generation autoclave materials [41].…”

Section: Using a Novel Form Of Source Materials With High Free Internal Energymentioning

confidence: 99%

“…A wide range of effective autoclave materials based on this raw material, including wall, decoration, heat-insulating, structural and heat-insulating, and acoustic materials were researched by the authors of [45]. The use of these rocks will expand the raw material base of autoclave hardening materials, reduce the energy intensity of manufacture thereof, advance the ecological condition of the environment, and produce a comfortable standard of living for people [40].…”

Section: Using a Novel Form Of Source Materials With High Free Internal Energymentioning

confidence: 99%

Self-Healing Construction Materials: The Geomimetic Approach

et al. 2021

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A person spends most of his life in rooms built from various building materials; therefore, the optimization of the human environment is an important and complex task that requires interdisciplinary approaches. Within the framework of the new theory of geomimetics in the building science of materials, the concepts of technogenic metasomatism, the affinity of microstructures, and the possibilities of creating composites that respond to operational loads and can self-heal defects have been created. The article aims to introduce the basic principles of the science of geomimetics in terms of the design and synthesis of building materials. The study’s novelty lies in the concept of technogenic metasomatism and the affinity of microstructures developed by the authors. Novel technologies have been proposed to produce a wide range of composite binders (including waterproof and frost-resistant gypsum binders) using novel forms of source materials with high free internal energy. The affinity microstructures for anisotropic materials have been formulated, which involves the design of multilayered composites and the repair of compounds at three levels (nano-, micro-, macro-). The proposed theory of technogenic metasomatism in the building science of materials represents an evolutionary stage for composites that are categorized by their adaptation to evolving circumstances in the operation of buildings and structures. Materials for three-dimensional additive technologies in construction are proposed, and examples of these can be found in nature. Different ways of applying our concept for the design of building materials in future works are proposed.

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“…Most structural and non-structural parts are made of plain cement concrete. Globally, the concrete industry is a major source of CO2 emissions [1,2]. A number of studies have tried to partially substitute conventional building materials with sustainable waste [3][4][5][6] in response to the growing awareness about climate change and sustainable construction, while maintaining the materials' mechanical qualities and sustainability [7,8].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of surface modified natural fibre using NaOH in composite concrete

Priya,

Sudalaimani

2023

Mater. Res. Express

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Abaca fiber degradation in concrete owing to its alkaline nature decreases the strength of concrete. This research focuses on overcoming the degradation by alkaline treatment with sodium hydroxide (NaOH) to improve fiber performance. This study was completed with the extraction process of fiber, mechanical properties, micro-structural analysis of composite fiber concrete for both M30 and M40 grades, and durability performance if the fiber content, aspect ratio of fiber and molarities of Sodium Hydroxide were optimized using splitting tensile strength of the concrete matrix and it was found that the optimum percentage of fiber content was 1% at 12% alkali treatment. The composite concrete has achieved an increase of 2700 to 3100 kg m−2 in split tensile strength with treated abaca fibers compared to untreated fiber concrete. In addition, treated abaca fiber concrete provides better performance in mechanical and durability studies. The binding nature of fiber concrete is better than that of conventional concrete, which is evidenced in microstructural analysis. This study ultimately concluded that the treated abaca fiber composite concrete is a better alternative to commercially available untreated abaca fibers and other natural fibers.

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Influence of biogenic treatment in improving the durability properties of waste amended concrete: A review

Cited by 31 publications

References 132 publications

Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste

Microbially Induced Calcium Carbonate Precipitation as a Bioremediation Technique for Mining Waste

Self-Healing Construction Materials: The Geomimetic Approach

Performance assessment of surface modified natural fibre using NaOH in composite concrete

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