Othuman Mydin, Md Azree and Al Bakri Abdullah, Mohd Mustafa and Abdul Razak, Rafiza and Mohd Nawi, Mohd Nasrun and Risdanareni, Puput and Puspitasari, Poppy and Victor Sandu, Andrei and Simona Baltatu, Madalina and Vizureanu, Petrica (2023) Study on Polypropylene Twisted Bundle Fiber Reinforced Lightweight Foamed Concrete. Buildings, 13 (541). pp. 1-25. ISSN 20755309

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Abstract

Recent industrial developments have focused more and more on the applications of lightweight foamed concrete (LFC) in the construction industry, having advantages over normalstrength concrete. LFC, however, has several drawbacks including brittleness, high porosity, excessive drying shrinkage, rapid cracking, and low deformation resistance. Practical engineering typically chooses steel fiber or polymer fiber to increase the tensile and fracture resistance of LFC. The polypropylene twisted bundle fiber (PTBF) was added to the LFC with varying weight fractions of 0.0%, 0.5%, 1.0%, 1.5%, 2.0% and 2.5%. Three low densities of LFC were prepared, specifically 500 kg/m3, 700 kg/m3 and 900 kg/m3. The mechanical and durability properties of PTBF-reinforced LFC were determined through compression, flexural, splitting tensile, flow table, porosity, and water absorption tests. The results show that the addition of PTBF in LFC significantly improves the strength properties (compressive, flexural, and splitting tensile strengths) and reduces the water absorption capacity and porosity. The optimal weight fraction of PTBF was between 1.5 and 2.0% for mechanical properties enhancement. The inclusion of PTBF increased the ductility of LFC, and the specimens remain intact from loading to failure. The PTBF reduces the original cracks of the LFC and inhibits the development of further cracks in the LFC

Item Type:	Article
Uncontrolled Keywords:	durability; strength; porosity; foamed concrete; polypropylene twisted fibers; water absorption
Subjects:	T Technology > T Technology (General)
Divisions:	School of Technology Management & Logistics
Depositing User:	Mr. Izhar Hj. Hashim
Date Deposited:	12 Jan 2025 06:12
Last Modified:	12 Jan 2025 06:12
URI:	https://repo.uum.edu.my/id/eprint/31851

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