Effect of Buoyancy, Compressive Strength, and Shear Strength of Polyurethane-Clay Composite (PU-CC) Doped with Polyurethane Filler Waste in Soft Clay Application

Atil, Aida Atiqah and Mat Hassan, Nik Normunira and Roseli, Adyla Illyana and Mohamed Yusop, Fatimah and Mohd Rus, Anika Zafiah and Marsi, Noraini and Tuan Ismail, Tuan Noor Hasanah and Yahya, Nur Faezah and Leman, Abdul Mutalib (2023) Effect of Buoyancy, Compressive Strength, and Shear Strength of Polyurethane-Clay Composite (PU-CC) Doped with Polyurethane Filler Waste in Soft Clay Application. Journal of Advanced Research in Applied Sciences and Engineering Technology, 31 (3). pp. 106-114. ISSN 2462-1943

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Abstract

The application of polyurethane waste as a filler is one of the most cost-effective strategies for enhancing the geotechnical properties in soils. The PU waste from manufacturing economies was prepared with alkaline solutions by submerging into a 0.05 M sodium hydroxide (NaOH) before sieving to 300m sizes. The PU waste as filler was prepared using two heat exposure from microwaves and drying ovens at 60°C and left for 3 hours. Then, the treated and untreated Polyurethane-Clay Composite (PU-CC) was prepared at the different ratios of PU waste filler (2.5%, 5%, 7.5%, and 10%). The physical properties of treated and untreated Polyurethane-Clay Composite (PU-CC) were examined utilizing buoyancy force, unconfined compressive strength (UCS), and direct shear strength, respectively. The result exhibited that the PU-CCTO has the highest buoyancy force at 10% of PU-CCTO10 samples at 50%, followed by 45% of PUCCTM10 and 8% of PU-CCUN2.5. The UCS and shear strength of PU-CCTO10 are evidently the highest at 300 kPa and 50 kPa, respectively, followed by PU-CCTM2.5 at 130 kPa and 19 kPa and PU-CCUN2.5 at 100 kPa and 15 kPa. PU-CCTO treated by drying oven has the highest buoyancy force at 10% of PU-CCTO10 samples at 50%, followed by 45% of PUCCTM10 treated by microwave, and the lowest at 2.5 wt% of PU-CCUN2.5 untreated at 8%. In a nutshell, the prospective PU-CCTO is superior to the PU-CCUN and PU-CCTM related of the potential for overheating and burning the PU filler powder during the microwave processing procedure. In conclusion, the 10 wt% of PU filler treated by the drying oven method as a PU clay composite has the potential as an alternative material to improve the compressive strength, shear strength, and buoyancy force in soil improvement.

Item Type:	Article
Uncontrolled Keywords:	PU filler; polyurethane waste; drying; subgrade layer
Subjects:	T Technology > T Technology (General)
Divisions:	Faculty of Engineering Technology > Department of Mechnical Engineering Technology
Depositing User:	Mr. Mohamad Zulkhibri Rahmad
Date Deposited:	15 Jan 2024 07:30
Last Modified:	15 Jan 2024 07:30
URI:	http://eprints.uthm.edu.my/id/eprint/10606

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