Enhancement of strength characteristics of Clayey Sand using fly ash and geonet

Lakshmi, S. Muthu; Rishikesan, R.; Gokulavasan, S. Vijay; Babu, B.S. Sunil; Nafeel, A.K.; Anand, M.J. Satish; Aravind, Arya

doi:10.1016/j.matpr.2020.02.078

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…After compacting, the untreated crusher run and CFA-treated crusher sample were soaked for four days in a drum of water under a 4.54 kg surcharge. During the CBR testing, the piston pushed 1.27 mm into the specimens each minute, and a calibrated load indicating the device was utilised to push the penetration piston with a diameter of 50 mm into the specimen, as required by ASTM D 1883 [6]. Due to technology limitations, the specimens' penetration resistance was determined up to a penetration of 7.50 mm.…”

Section: California Bearing Ratio (Cbr)mentioning

confidence: 99%

“…[5]. According to Lakshmi et al (2020), found that adding FA enhanced the CBR value by 28 percent when compared with contral sample [6]. In this study, CFA was added to crusher run in various percentages to determine the bearing capacity of CFA-treated crusher run used as road base materials and compare performance to untreated crusher run.…”

Section: Introductionmentioning

confidence: 97%

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Utilization of coal fly ash to enhance the bearing capacity of road base

Radwan

Satar

Hassan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Coal is responsible for the generation of around 38 percent of the power that is used throughout the entire planet. In the last two decades, there has been a rise in the number of chances for recycling and usage of fly ash from coal combustion due to its hydrophobic and cementitious properties. However, there is still limited commercialization of coal fly ash (CFA) in road construction. The focus of this research is to determine the bearing capacity of a CFA-treated crusher run used as a road base course. In order to determine the appropriate percentage of CFA, the crusher run was mixed with various percentages of Class F CFA, including 10%, 15%, 20%, and 25%. The proctor Compaction test (PCT), soaked and unsoaked California Bearing Ratio (CBR) tests, and Unconfined Compressive Strength Test (UCST) were then used to evaluate the bearing capacity of the CFA-treated crusher. The result shows that as the percentage of CFA increased, the Optimum Moisture Content (OMC) and Maximum Dry Density (MDD) decreased compared with the control specimen. The soaked and unsoaked CBR of the CFA-treated crusher run with 20% CFA increased by approximately 32% and 26% respectively that of the control specimen. Therefore, it is proven that utilization of CFA up to 20% into crusher run could enhance the bearing capacity of the road base.

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Section: California Bearing Ratio (Cbr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Utilization of coal fly ash to enhance the bearing capacity of road base

Radwan

Satar

Hassan

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Experimental Study on Shear Strength Performance of Coal Bottom Ash Reinforced with Geosynthetics

Ram

Sharma

Mohanty

2022

Int. J. of Geosynth. and Ground Eng.

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Evaluation of Penetration Resistance of Soils Reinforced with Geosynthetics Using CBR Tests

Carlos,

Pinho-Lopes,

Lopes

2024

Int. J. of Geosynth. and Ground Eng.

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The application of geosynthetics in roads, paved or unpaved, can extend the service life of pavements, reduce base course thickness and delay rutting development, as well as reinforce weak subgrade layers, the base–subgrade interface, or the base layer. Regarding the application of geosynthetics in roads, this paper uses laboratory CBR tests to investigate how geosynthetics can improve the penetration resistance of two site-won soils (coarse and fine), analysing the influence of several parameters. The test conditions influenced unreinforced and reinforced specimens similarly. The CBR test captured the beneficial effect of the inclusion of one reinforcement layer for both soils. However, when the coarse soil was reinforced with two or more layers of sheet reinforcements, the limitations of the CBR test had a significant impact on the test results. The lateral walls of the mould and the reinforcement layout may lead to misleading results in the CBR tests. These conclusions were qualitatively corroborated by comparisons with the stress–strain behaviour from triaxial tests. Considering its popularity in the design of roads, and to address limitations of the CBR test, a modified setup to carry out CBR tests of reinforced soil solutions is proposed. This setup aims to ensure that the reinforcement mechanisms mobilised during the CBR test are realistic.

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Enhancement of strength characteristics of Clayey Sand using fly ash and geonet

Cited by 3 publications

References 13 publications

Utilization of coal fly ash to enhance the bearing capacity of road base

Utilization of coal fly ash to enhance the bearing capacity of road base

Experimental Study on Shear Strength Performance of Coal Bottom Ash Reinforced with Geosynthetics

Evaluation of Penetration Resistance of Soils Reinforced with Geosynthetics Using CBR Tests

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