The Implementation of Binary Blend of Waste Glass Powder and Coal Bottom Ash as a Partial Cement Replacement Toward More Sustainable Mortar Production

OLABIMTAN, STEPHEN  BABAJIDE; Mosaberpanah, Mohammad Ali

doi:10.2139/ssrn.4387415

Cited by 3 publications

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“…In a recent research paper by Olabimtan and Mohammad [12], the emphasis was on the use of a bipartite mixture made of discarded glass powder and coal bottom ash as a cement substitute in the manufacture of sustainable mortar. The goal of the study was to determine whether this mixture had the ability to improve mortar materials' environmental performance.…”

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confidence: 99%

Effect of waste glass powder and recycled fine aggregate in sustainable concrete

Olabimtan,

Damdelen

2023

JSEAM

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It is required to help improve concrete's efficiency through the use of waste while also preventing river sand and valuable area from becoming pollution dumpsites. Construction and demolition waste (CDW) has a wide range of possible uses in the construction sector and is quite ubiquitous. It is used as recycled aggregates (RA) in building supplies like mortar and concrete, however, is remaining relatively constrained. This is mostly because it lacks the strength and has more porosity and variability when compared to natural aggregates (NA). Countless research has been conducted with the goal of lowering CO2 emissions, reducing NA exploitation, and enhancing the qualities of these RAs. This research study undertakes a complete experimental assessment to evaluate the impact of adding glass powder and recycled fine aggregates on the creation of sustainable concrete. The study looks at varied proportions of glass powder and recycled fine aggregates, ranging from 0% to 20% with 5% intervals. At a constant temperature of 20°C, the concrete samples are treated to various curing conditions, including both wet and dry curing. Curing times of 3, 7, 14, and 28 days are evaluated. This particular mixture demonstrates a significant increase of 7.2% - 10.76% in strength, indicating that the combined use of 20% GP and 20% RFA results in the highest enhancement of concrete strength among the tested mixtures. This research experiment can be drawn that the inclusion of GP and RFA in concrete gives a tremendous influence in the implementation of mechanical properties and durability for a sustainable concrete.

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Section: Introductionmentioning

confidence: 99%

Effect of waste glass powder and recycled fine aggregate in sustainable concrete

Olabimtan,

Damdelen

2023

JSEAM

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Utilization of Waste Glass Cullet as Partial Substitutions of Coarse Aggregate to Produce Eco-Friendly Concrete: Role of Metakaolin as Cement Replacement

Hasan,

Shaurdho,

Sobuz

et al. 2023

Sustainability

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The utilization of waste products is becoming a vital aspect of the construction industry to safeguard environmental assets and mitigate pollution, all of which lead to long-term sustainable development. From this perspective, this experimental investigation was carried out to determine the cumulative influence of waste glass cullet and metakaolin (MK) as partial replacements for coarse aggregates and cement in an isolated and combined manner. This research demonstrated the influence of integrating glass aggregate and metakaolin wherein coarse aggregate was substituted by 10%, 15%, 20%, 25%, and 30% glass cullet (by weight), and cement was supplemented with 10% metakaolin. The substitution of waste glass with coarse aggregate significantly declines the compressive strength correspondingly; however, the integration of 10% metakaolin powder enhanced the strength slightly for all specimens up to 25%. On the other hand, for flexural strength, the inclusion of glass waste in concrete reduced the performance, whereas the incorporation of metakaolin boosted the strength but did not achieve greater strength compared to the control mixture. The sustainability analysis revealed that the production cost and eCO2 emission could be reduced by 15% and 7% by incorporating glass cullet and metakaolin in the concrete mix, which satisfied sustainability. Based on the experimental results, the ideal proportion substitution would be 25% glass aggregate with 10% metakaolin, which could satisfactorily be used to generate sustainable concrete.

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Influence of Aggressive Environment in Macro and Microstructural Properties of Bottom Ash Geopolymer Concrete

Saravanakumar,

Elango,

Revathi

et al. 2024

Sustainability

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India generates 759.02 million metric tons of coal ash annually. Part of that quantity is successfully utilized, and the remaining portion of the ash is discarded into a landfill. There also is a need to address pollution. Cement industries are responsible for 7% of global warming. Cement has been replaced entirely by thermal power plant waste, and bottom ash is used as a binder to overcome those issues. A few researchers have carried out strength characterization, but an extensive study needs to be carried out under different environmental exposures. Therefore, the present study investigated macro and micro properties of bottom ash geopolymer concrete (BAGPC) subjected to aggressive ecological exposure conditions such as acid, salt, and sulfate attack. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) of eight molarities were used as activators for the bottom ash geopolymer concrete (BAGPC) binder. Further bonding between steel and conventional concrete BAGPC mixes was investigated. The durability of conventional concrete (CC) was taken as the control mix to compare the durability of the optimized mix (B4) of bottom ash geopolymer. The test samples were cured for 28 days under ambient temperature and tested for the effect of MgSO4, NaCl, and HCl. The strength loss and weight loss of the BAGPC B4 mix after 7, 28, 56, 90, and 180 days under aggressive conditions showed better performance than CC. It has been observed that geopolymer concrete has good bonding in nature, and the bond strength results indicate excellent bonding between steel and concrete. Microstructure studies revealed that the BAGPC B4 mix had a strong microstructure and not as much of a porous structure. It is concluded that BAGPC has potential value in the construction industry based on all aspects of the experiment.

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The Implementation of Binary Blend of Waste Glass Powder and Coal Bottom Ash as a Partial Cement Replacement Toward More Sustainable Mortar Production

Cited by 3 publications

References 0 publications

Effect of waste glass powder and recycled fine aggregate in sustainable concrete

Effect of waste glass powder and recycled fine aggregate in sustainable concrete

Utilization of Waste Glass Cullet as Partial Substitutions of Coarse Aggregate to Produce Eco-Friendly Concrete: Role of Metakaolin as Cement Replacement

Influence of Aggressive Environment in Macro and Microstructural Properties of Bottom Ash Geopolymer Concrete

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