Symbiotic effects of coffee husk ash incorporated ternary AAB system on qualitative, durability and sustainable characteristics

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 425, P. 136058 - 136058

Published: April 1, 2024

The present novel research work emphasizes the characterization of binder materials, performance alkali-activated ternary paste & mortar consisting coffee husk ash (CHA), rice (RHA), and ground granulated blast furnace slag (GGBS). material for materials were carried out using advanced microstructural analysis techniques. A total nine pastes are prepared GGBS (70–50%), CHA (20–40%), RHA (10%) with 4 M, 6 M 8 sodium hydroxide (NaOH) solution. tests conducted on fresh hardened include setting time, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, thermogravimetric analysis, indicated presence CSH, NASH gel. mixes proportions tested slump, compressive strength, flexure direct tensile water absorption ultrasonic pulse velocity (UPV). strength mix ranges between 31.2 52.2 MPa at 90 days. durability was investigated through exposure to acid sea attack, while sustainability determined by production cost carbon dioxide emission. percentage benefit AAB as compared OPC, 23.24% 34%. M6 (60% GGBS, 30% 10% NaOH) found be optimum, making it suitable use in construction an alternate OPC terms durability, sustainability.

Language: Английский

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An overview of the use and process for enhancing the pozzolanic performance of industrial and agricultural wastes in concrete

Deleted Journal, Journal Year: 2025, Volume and Issue: 7(3)

Published: Feb. 21, 2025

Language: Английский

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Mechanical performance of geopolymer concrete with micro silica fume and waste steel lathe scraps

Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 19, P. e02548 - e02548

Published: Oct. 5, 2023

Environmental studies for solutions are among the most important agendas of scientific world. Most new taking into account environmental effects. However, it is interesting world to find accumulated problems, reduce harmful production, and turn wastes that cause pollution useful products. In addition incorporating fly ash, a recognized environmentally friendly sustainable material, geopolymer concrete utilizes micro silica fume as binding agent. Furthermore, waste lathe scraps introduced enhance safeguard concrete's mechanical properties. During preparation phase, significant enhancements have been identified in workability setting time concrete. A total 16 test samples were prepared study. Micro 0%, 5%, 10% 20% 1%, 2% 3% examined. Experimental findings reveal 5% resulted notable improvements compressive, flexural, splitting tensile strength, with increases 14.4%, 7.45%, 6.18% respectively. higher additions found decrease these strengths. contrast, inclusion 1% led strength by 11.4%, 6.35%, 8.23% reduced capacity. The demonstrated combining scrap provided highest 25.7%, 12.0% Considering workability, time, observed all tests, recommended optimal mixture together scrap.

Language: Английский

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Large CO2 reduction and enhanced thermal performance of agro-forestry, construction and demolition waste based fly ash bricks for sustainable construction

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 10, 2024

The exhaust gases in production of burnt clay bricks is responsible for greenhouse (GHGs) emission which increase the carbon footprint ecosystem. Here, we report and thermal performance based evaluation 8 ft. × 9 building. used building construction are manufactured from fly ash, agro-forestry wastes, & demolition wastes (C&D), ground granulated blast furnace slag (GGBFS) using NaOH as activator order to provide compressive strength range 3-6 MPa with ambient curing at 30 °C 28 days. Life cycle analysis (LCA) reveals total CO

Language: Английский

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RETRACTED: Effects of glass fiber on recycled fly ash and basalt powder based geopolymer concrete

Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 19, P. e02659 - e02659

Published: Nov. 7, 2023

This experimental study encompasses a comprehensive exploration of multiple parameters aiming to enhance the strength, workability, setting time, and environmental attributes geopolymer concrete (GPC). A pivotal solution lies in substituting fly ash with waste basalt powder, not only reducing binder costs but also ameliorating overall ecological footprint. secondary significant factor entails integration trimmed glass fibers. Throughout experimentation process, predominant underwent substitution powder at proportions 25%, 50%, 75%. The mixtures were augmented fibers 3 mm, 6 12 mm lengths, introduced ratios 0.5%, 1%, 2%, 3%. Following this, acquired samples subjected 24-hour curing regimen an 85°C oven. Subsequently, after 7-day period exposure external conditions post-incubation, these tested encompassing both compressive flexural strength tests. Samples incorporating ratio 50% showcased highest capacities, contrasting reduced capacities when was elevated Conversely, utilizing NaOH molarity M demonstrated superior performance. Impressively, compression exceeding 40 MPa achieved amalgamation additive. However, workability experienced notable reduction fiber 2% Molarity concentrations did impede slump, or time. consistent time hours attained, desired without need for superplasticizer. For achieving optimal triad while maximizing advantages GPC concrete, recommendation is incorporate distinct combination comprising 1-2% (with length), NaOH, into mixture formulation.

Language: Английский

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Performance of concrete produced with alkali-activated artificial aggregates

Journal of Material Cycles and Waste Management, Journal Year: 2024, Volume and Issue: 26(4), P. 2024 - 2042

Published: April 5, 2024

Abstract The excessive use of natural aggregates raises mining activity. Further, it leads to environmental damage, which can be reduced using artificial produced from waste powdered materials. This study discussed the production process alkali-activated coarse and how their affects behavior concrete. different concrete mixtures were designed by replacing with ones at percentages. Various tests conducted determine concrete’s fresh, hardened, permeability, microstructural characteristics. result showed that incorporated achieve higher workability lower density than aggregate mechanical strengths slightly decreased as percentage addition in a mix increased. However, adding up 50% comparable results water permeability chloride ion penetration within standard limits for all mixes. scanning electron micrographs solid compact ITZ between phases. XRD pattern revealed had not changed mineralogical composition concrete; formation hydrated products helps obtain strength. concluded could effectively replace producing structural many advantages.

Language: Английский

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Innovative approaches to sustainable construction: a detailed study of rice husk ash as an eco-friendly substitute in cement production

Deleted Journal, Journal Year: 2024, Volume and Issue: 6(11)

Published: Nov. 9, 2024

An immense amount of rice is cultivated globally, leading to the generation large amounts husk. Unfortunately, this husk often disposed in natural settings and lagoons. The alternative use material encourages replacing traditional building materials. Rice production India 31.40 million tonnes, which fills landfills causes environmental problems. Concrete with substance helps solve economic This material's high silica content makes it pozzolanic. Extensive studies have been carried out recent decades evaluate viability incorporating into different construction methods. sustainable development environment economy nations has benefited greatly from such research innovations. Key findings indicate that a positive impact on strength durability concrete, while also contributing reduction carbon emissions. It implications potential reduce expenses encourage environmentally conscious methods through reuse agricultural waste study summarises historical husk-based concrete infrastructure projects. Its physical chemical features increase compressive, tensile, workability, durability, flexural strength, water absorption. VOS viewer was used for bibliometric analysis country keyword data. purpose increasing compressive when using ash as replacement cement enhance load-bearing capacity concrete.

Language: Английский

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Producing of alkali-activated artificial aggregates by pelletization of fly ash, slag, and seashell powder

Innovative Infrastructure Solutions, Journal Year: 2023, Volume and Issue: 8(10)

Published: Sept. 8, 2023

Abstract In the construction sector, material supply chain of aggregates is frequently disturbed due to seasonal unavailability, quarrying issues, and environmental norms. The production artificial has gained prominence conserve natural resources promote green practices. current study encompasses alkali-activated through cold-bonding pelletization technique using three different raw materials, including fly ash, ground granulated blast furnace slag, seashell powder in binary ternary blending combinations. cold bonding was achieved by alkali activation binders with aid a sodium-based alkaline solution, which acts as an activator hydrating liquid. fresh were subjected surface treatment same solution enhance their characteristics. mechanical properties confirmed potential substitute for conventional exhibiting crushing impact values 18.19–27.53% 12.06–18.85%, respectively. microstructural mineralogical characteristics depicted dense microstructure compact matrix. concludes that can effectively replace coarse aggregate making structural concrete many economic, environmental, technical advantages.

Language: Английский

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Sustainable alkali activated binders from a blend of biomass ash and iron sludge precursor

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 12, 2025

Biomass ash is produced as a by-product of boiler combustion and most this disposed in landfills. has relatively low reactivity alkali activated systems have poor mechanical properties. The inclusion Fe-rich material the precursor composition would increase properties alkali-activated binders. This study focuses on an binder made from blends biomass fly power plant iron sludge ship repair company. In blends, some were substituted by sludge, which consisted high-volume compounds. After curing, compressive strength was determined, values explained mineral microstructure. Samples cured at higher temperature (at 60 °C for 24 h), acted reactive component reacted with NaOH to reduce its (NaOH) content system. For samples ambient less or like filler. Calcium aluminosilicate hydrate not detected, but amount N-A/F-S-H C-(A/F)-S-H gel formed compared temperature. Iron incorporated into matrix, making it more compact. These factors led incorporating IS. highest 9.8 MPa achieved 30% sludge. Thus, creating binders promising way use residues such

Language: Английский

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Jute leaves ash@Fe3O4 as efficient nanocatalyst for sustainable biodiesel production: Characterization, optimization and kinetic investigation

Journal of Industrial and Engineering Chemistry, Journal Year: 2023, Volume and Issue: 131, P. 288 - 304

Published: Oct. 18, 2023

Language: Английский

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