Effect of Palm Fiber Reinforcement on the Unconfined Compressive Performance of Cement-Treated Sand

Phermphorn Buathong, Thanakorn Chompoorat, Pornkasem Jongpradist, Xiaobin Chen and Pitthaya Jamsawang ()
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Phermphorn Buathong: Department of Civil Technology Education, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Thanakorn Chompoorat: Department of Civil Engineering, School of Engineering, University of Phayao, Phayao 56000, Thailand
Pornkasem Jongpradist: Construction Innovations and Future Infrastructures Research Center, Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Xiaobin Chen: Key Laboratory of Heavy-Haul Railway Engineering Structures, School of Civil Engineering, Central South University, Changsha 410018, China
Pitthaya Jamsawang: Soil Engineering Research Center, Department of Civil Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand

Sustainability, 2023, vol. 15, issue 11, 1-16

Abstract: This research studies the unconfined compressive characteristics of cement-treated sand reinforced with palm fiber. Type 1 Ordinary Portland cements with 3, 5, and 7% dry sand weight were mixed with sand and different amounts of water to produce cement-treated sand. Palm fiber contents of 0.5, 1, and 2% volume and fiber lengths of 10, 20, and 40 mm were utilized. Three performance parameters were considered to assess the performance of the cemented sand reinforced with palm fiber: peak strength, strain ratio, and toughness. The results showed that incorporating palm fiber elements could improve the peak strength and ductility and reduce brittleness by increasing the fiber content and length. All palm-fiber-reinforced samples showed a softening behavior and changed the behavior of cement-treated sand from brittle to semi-ductile or ductile. The compressive strength of reinforced cemented sand increased when the fiber length was 40 mm, and the compressive strength was reduced as the fiber content exceeded 1.0%. Palm fiber was the most efficient at increasing the toughness of the cemented specimen because of its rigidity and bridging ability. The optimum fiber content and length for the cement–treated sand were 1.0% and 40 mm, respectively.

Keywords: cement-treated sand; fiber-reinforced soil; natural fiber; soil stabilization; toughness; unconfined compressive strength (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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