Optimization of rice husk ash-based alkali activated composites (AAC) blended with bauxite and GGBS for sustainable building materials DOI Creative Commons

Kalyan Kumar Moulick,

Amit Shiuly, Soumya Bhattacharjya

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1)

Published: Dec. 23, 2024

Rice husk ash (RHA)-based Alkali Activated Composites (AAC) offer a sustainable alternative to traditional construction materials, promoting both agricultural waste management and environmental responsibility. Thus, in the present study an effort was made prepare RHA based AAC blended with Bauxite GGBS through experimental optimisation procedure. For this purpose, several numbers of Ground Granulated Blast Furnace Slag (GGBS) were prepared by incorporating different percentage Bauxite, GGBS, Activators water laboratory compressive strengths evaluated. Based on data, regression equations proposed strength as function RHA, water. In addition that, using analyses, optimization test results conducted. Furthermore, validation conducted for optimized mix. The mix proportions per cubic meter oven-cured 750 kg 1100 bauxite, 150 230 water, while ambient-cured AAC, 945.3 889.08 165.6 306.6 RHA-based demonstrated ranging from 18 24 MPa, highest achieved at specific bauxite ratios. Further, microstructure samples performing Scanning Electron Microscope, Energy Dispersive X-ray X-Ray Diffraction broken samples. result revealed critical microstructural features such gel phases partial crystallinity, contributing material's durability. current findings indicate that can serve effective solution environmentally friendly, economically demonstrating commendable performance within industry.

Language: Английский

A review of the suitability and performance of phosphogypsum as a material for road base and subbase construction DOI

Malik A. DeWindt,

Kate D. Weiksnar, Steven J. Laux

et al.

Resources Conservation and Recycling, Journal Year: 2025, Volume and Issue: 215, P. 108120 - 108120

Published: Jan. 6, 2025

Language: Английский

Citations

1
Valorization of recycled concrete powder, clay brick powder, and volcanic pumice powder in sustainable geopolymer concrete DOI Creative Commons
Ahmed M. Tahwia,

Mohamed Abdellatief,

Abdul Aziz Nabil Salah

et al.

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

Published: April 1, 2025

Abstract The use of recycled powder as a binder in geopolymer concrete (GPC) represents promising approach to reducing construction waste and promoting the production sustainable materials. This study examines impact (RCP), clay brick (CBP), volcanic pumice (VPP) on mechanical, durability, thermal properties GPC with fly ash slag under water curing. Key mechanical properties, including compressive strength (CS), splitting tensile strength, flexural were evaluated, while durability was assessed through absorption, penetration, resistance sulfate acid attacks. performance tested by exposing samples elevated temperatures 200 °C, 400 600 °C. Results demonstrated that incorporating 25% RCP enhanced CS 14.88% at 28 days compared control mixture, although higher replacement levels (50% 75%) led reduced due increased porosity. Similarly, CBP substitution resulted 21.12% increase CS, declines observed levels. Conversely, VPP decreased 8.68% days, further significant reductions its high Sulfate testing 5% MgSO₄ solution showed minimal mass loss for mixtures (0.3–1.2%) moderate (5.7–29.6%). exhibited low (0.3–1.7%) (8.7–15.8%), experienced highest losses (1.36–3.4%) (20.5–31.3%). SEM analysis revealed denser microstructures, which contributed their stability. Generally, optimizing RCP, CBP, improves pore structure, GPC. Among materials, superior acidic environments, excelled stability, demonstrating potential producing durable concrete.

Language: Английский

Citations

1
Investigation of Mechanical Properties of Stabilized Silt-Millet Husk Ash Mixtures DOI
Shivendra Singh Chauhan, Kumar Venkatesh

Indian geotechnical journal, Journal Year: 2025, Volume and Issue: unknown

Published: May 20, 2025

Language: Английский

Citations

0
A study on the synthesis and performance evaluation of fly ash and alccofine as sustainable cementitious materials DOI Creative Commons
Siva Shanmukha Anjaneya Babu Padavala, Venkatesh Noolu, Yeswanth Paluri

et al.

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

Published: Aug. 18, 2024

Construction and global infrastructure depend on cement production. It is one of the biggest carbon emitters, making it an aspect environmental sustainability climate change mitigation. Each stage production releases CO2 other greenhouse gasses. About 8% worldwide emissions come from sector, a major contributor. Different supplementary cementitious materials (SCMs) like fly ash (FA), silica fume (SF), slag are used to partially replace traditional raw limestone, reducing impact. This study investigated use materials, specifically FA alccofine (AF), as partial replacements for in concrete reduce The first identified optimal replacement percentage (20%, 30%, 40%) by weight cement. Subsequently, using percentage, AF was added at varying percentages (5%, 10%, 15%) evaluated mechanical properties mixtures, including workability, compressive strength, split tensile flexural strength. Durability, measured water sorptivity rapid chloride penetrability tests, also assessed. microstructural were analyzed understand their influence performance. As result significant implications producing all activities, in-depth life cycle assessment (LCA) conducted. Additionally, artificial neural networks employed predict strength concrete. concluded that incorporating mixtures promising approach more environmentally friendly

Language: Английский

Citations

2
Strength characteristics and microstructure of silty sand improved by red mud, lime and fly ash under dry-wet cycle DOI Creative Commons
Song Yin, Shiqiang Zheng, Xinming Li

et al.

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 22, P. e04116 - e04116

Published: Dec. 11, 2024

Language: Английский

Citations

1
Optimization of rice husk ash-based alkali activated composites (AAC) blended with bauxite and GGBS for sustainable building materials DOI Creative Commons

Kalyan Kumar Moulick,

Amit Shiuly, Soumya Bhattacharjya

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1)

Published: Dec. 23, 2024

Rice husk ash (RHA)-based Alkali Activated Composites (AAC) offer a sustainable alternative to traditional construction materials, promoting both agricultural waste management and environmental responsibility. Thus, in the present study an effort was made prepare RHA based AAC blended with Bauxite GGBS through experimental optimisation procedure. For this purpose, several numbers of Ground Granulated Blast Furnace Slag (GGBS) were prepared by incorporating different percentage Bauxite, GGBS, Activators water laboratory compressive strengths evaluated. Based on data, regression equations proposed strength as function RHA, water. In addition that, using analyses, optimization test results conducted. Furthermore, validation conducted for optimized mix. The mix proportions per cubic meter oven-cured 750 kg 1100 bauxite, 150 230 water, while ambient-cured AAC, 945.3 889.08 165.6 306.6 RHA-based demonstrated ranging from 18 24 MPa, highest achieved at specific bauxite ratios. Further, microstructure samples performing Scanning Electron Microscope, Energy Dispersive X-ray X-Ray Diffraction broken samples. result revealed critical microstructural features such gel phases partial crystallinity, contributing material's durability. current findings indicate that can serve effective solution environmentally friendly, economically demonstrating commendable performance within industry.

Language: Английский

Citations

1