Analysis of Aggregate Gradation to Improve The Characteristics of Geopolymer Based Asphalt Concrete

Aditama, Akhmad Taufik; Ekaputri, Januarti Jaya; Ahyudanari, Ervina

doi:10.12962/j20882033.v29i3.3690

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…The study results indicated that the medium gradation produces the optimum characteristics with enhanced stability value and slightly increase voids of the mixture [40]. From previous researchers, it can be concluded that the use of geopolymer as a filler substitute can improve the Marshall and mechanical properties for asphalt concrete mixtures.…”

Section: Fillermentioning

confidence: 77%

“…Though, all the values obtained were within the stipulated standard for asphalt concrete mixtures. Also, a study by Aditama et al [40] using filler geopolymer made from fly ash investigates the aggregate gradation assessment to enhance the characteristics of mixed asphalt concrete geopolymers. The aggregate requirement set was divided into three; upper, middle, and lower limits.…”

Section: Fillermentioning

confidence: 99%

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Geopolymer utilization in the pavement industry - An overview

Yaro

Napiah

Sutanto

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The significant quantity of wastes has raised concern for their management and environmental effects. One of the alternatives ways is the reuse of waste in the construction industry through geopolymerization technology which incorporates waste materials with silica or/and alumina content with activator solution to form a matrix of geopolymers material. This process has attracted attention due to its successful application in different disciplines, influenced by its enhanced properties. This overview paper focuses on available research articles on geopolymers’ utilization in the pavement industry. The study analyzes available works of literature on various geopolymer materials, composition, processes, and the use of geopolymer as artificial aggregate, aggregate substitute, or modifier for the asphalt mixtures. Based on the qualitative overview it was observed that sodium hydroxide or phosphoric acid solution molarity, liquid-to-binder ratio, duration of curing, and temperature affect the properties of geopolymer produced. Also, geopolymers show exceptional performances compared to conventional materials. Though, there is still limited literature about geopolymers pavement long-term performance as well as its response to extreme environmental conditions. Furthermore, there is no standard for the design and preparation of geopolymer modified pavements. From the review, it was ascertained that geopolymers have great potential to be utilized in the pavement industry, as evidenced by the positive and affirmative performances from various studies. In conclusion, it is recommended and encouraged that the pavement industry should explore and utilize more geopolymer materials during construction to promotes sustainability.

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Section: Fillermentioning

confidence: 77%

Section: Fillermentioning

confidence: 99%

Geopolymer utilization in the pavement industry - An overview

Yaro

Napiah

Sutanto

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

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Optimizing biochar-based geopolymer composites for enhanced water resistance in asphalt mixes: an experimental, microstructural, and multi-objective analysis

Yaro,

Sutanto,

Habib

et al. 2023

J. Eng. Appl. Sci.

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Due to increased traffic and environmental concerns, this study addresses challenges in conventional asphalt concrete. Our focus is on enhancing the water resistance of asphalt mixes through the optimization of both the asphalt binder and the biochar-based geopolymer composite. We employ experiments and response surface methodology to assess their impact on volume, Marshall parameters, and water resistance. Asphalt binders were evaluated within the range of 4–6%, while biochar-based geopolymer composite levels varied from 0 to 4%. According to the findings, the incorporation of the biochar-based geopolymer composite improves asphalt properties, stiffness, and temperature sensitivity. Response surface methodology (RSM) was utilized to construct robust mathematical models with high R2 values (90%) and low p-values. Multi-objective optimization indicated that optimal content levels were 4.56% for the binder and 2.71% for the biochar-based geopolymer composite. Model accuracy was confirmed with less than a 5% error in validation tests. The research also identified structural changes in the asphalt binder caused by the BGC Si–O phase. Additionally, the leaching value for both BGC and BGC-MAB asphalt concrete was found to be substantially below the regulatory limit, demonstrating the environmental safety of incorporating BGC into the asphalt sector.

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Analysis of Aggregate Gradation to Improve The Characteristics of Geopolymer Based Asphalt Concrete

Cited by 2 publications

References 5 publications

Geopolymer utilization in the pavement industry - An overview

Geopolymer utilization in the pavement industry - An overview

Optimizing biochar-based geopolymer composites for enhanced water resistance in asphalt mixes: an experimental, microstructural, and multi-objective analysis

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