Utilization of Class ‘C’ Fly Ash in Flexible Pavement System—A Review

Joshi, A. R.; Patel, Sankita J.; Shahu, J. T.

doi:10.1007/978-981-13-6713-7_50

Cited by 7 publications

(5 citation statements)

References 15 publications

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“…Hence, it is utmost important to use industrial wastes and by products for road construction to minimize requirement of natural resources. Industrial wastes and by-products such as fly ash [2,3], steel slag [4], copper slag [5], silica fume, ground granulated blast furnace slag (GGBS) [6,7] are widely used in construction. By-products such as Fly ash, silica fume, *Corresponding Author Email: joshiamruta89@gmail.com (A.…”

Section: Introductionmentioning

confidence: 99%

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Application of Class C Fly Ash and Quarry Dust Mix for Utilization as Subbase Material in Flexible Pavement

Joshi

Patel

2023

IJE

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Depleting good quality natural aggregates and soils call for the need of use of industrial by-products and waste materials in road construction. Use of wastes and by-products in road construction consume large quantities and resolve issue of their safe disposal. Class C fly ash is the by-product from thermal power plants while quarry dust is waste left behind during quarrying processes. This study investigated the application of class C fly ash and quarry dust mix for utilization in subbase layer of flexible pavement. The class C fly ash and quarry dust mixed were studied with the help of unconfined compressive strength test, repeated load triaxial test, durability test and microstructural analysis. The mixture of 90% fly ash plus 10% quarry dust was found to be suitable with respect to strength and durability criteria to be used as subbase material in flexible pavement. Owing to the formation of cementitious phases during pozzolanic reaction, proposed mix demonstrated significantly higher resilient modulus than conventional granular subbase material. The service life ratio for pavement with proposed mix is 1.2 and 1.26 in fatigue and rutting respectively compared to conventional pavement. The use of quarry dust and fly ash in large quantities in flexible pavement is an economical as well as sustainable solution for road construction.

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Section: Introductionmentioning

confidence: 99%

“…Addition of class C fly ash to conventional materials used in base and subbase layers cause significant strength improvement and consequently reduction in layer thicknesses. Hence, using class C fly ash in pavement in bulk quantities is economical and sustainable [2].…”

Section: Introductionmentioning

confidence: 99%

Application of Class C Fly Ash and Quarry Dust Mix for Utilization as Subbase Material in Flexible Pavement

Joshi

Patel

2023

IJE

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“…The self-cementing property of fly ash has been extensively studied and applied for decades, particularly in terms of soil stabilization [3][4][5][6][7]. Conversely, research and utilization of self-cementing fly ash in concrete, especially as a sole binder material, remain quite limited.…”

Section: Introductionmentioning

confidence: 99%

Long-term Mechanical Properties and Microstructure of Concrete Utilizing Self-Cementing Fly Ash as A Sole Binder Material

Wattimena,

Antoni,

Hardjito

2023

ced

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Self-cementing fly ash, containing calcium oxide (CaO) of about 20%, has successfully become a sole binder material in concrete through hydration. A very low water-to-fly ash ratio, e.g., below 0.20, is the main key to achieving the high compressive strength of concrete. This study explores the strength evolution, long-term compressive strength, and mechanical properties of concrete that utilize self-cementing fly ash as a sole binder material. Remarkably, the long-term compressive strength continues to develop over a year, reaching nearly 50 MPa at 365 days, a 34% increase from the 28-day strength. While the other mechanical properties are slightly lower than predictions from empirical formulas for Portland cement concrete, promising results are observed. Scanning Electron Microscope (SEM) images highlight surface-restricted hydration products in self-cementing fly ash, rather than full dissolution of fly ash particles.

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“…Most developed countries tend to land ll reduction disposals because of the rareness of land, high land lling costs, and tightness of environmental policies (Banar and Özkan 2008;Lam et al 2010). Stabilization in the pavement is the effective approach in which ashes can be e ciently stabilized in road pavement as an ordinary and straight method of ash reusing (Abukhettala 2016;Joshi et al 2019).…”

Section: Introduction Ash Stabilization In the Pavementmentioning

confidence: 99%

Research trends on ash stabilization in the pavement during 2002–2021

Hatami

Sabour

Joshaghani

2022

Environ Sci Pollut Res

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Incineration ashes should be disposed of appropriately considering environmental issues. Ash stabilization in the pavement is an effective approach to reduce environmental impact and proper disposal. This study aimed to achieve a bibliometric analysis of "ash stabilization in pavement" research during 2002-2021, considering language, chronological trends, source types, subject areas, document types, a liations, journals, countries, and author keywords. Also, Social Network Analysis was used for trends mapping and global collaborations determination among countries. The results exposed that the number of publications has been signi cantly increased by more than fourteenfold over the studied period. The United States, by 383 publications, was the leading country, followed by India and China. The most independent rate of the publications belonged to India, by 93.0%. The "Construction and Building Materials" published the most related articles, followed by "Journal Of Materials in Civil Engineering" and "Road Materials and Pavement Design." Amongst the top ten productive institutes and organizations, four a liations were from China, and three were from the United States. "Fly ash," "compressive strength," "durability," "geopolymer," "strength," and "resilient modulus" had the most growth rate in recent years, based on the author keywords analysis. Besides, the increase of emerging keywords, "pervious concrete," "reclaimed asphalt pavement," and "lateritic soil" are noteworthy in the second half period.

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Utilization of Class ‘C’ Fly Ash in Flexible Pavement System—A Review

Cited by 7 publications

References 15 publications

Application of Class C Fly Ash and Quarry Dust Mix for Utilization as Subbase Material in Flexible Pavement

Application of Class C Fly Ash and Quarry Dust Mix for Utilization as Subbase Material in Flexible Pavement

Long-term Mechanical Properties and Microstructure of Concrete Utilizing Self-Cementing Fly Ash as A Sole Binder Material

Research trends on ash stabilization in the pavement during 2002–2021

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