Development of fiber cement tile using perlite and sisal fiber /$cSiriwan Thepruttana

Name: Siriwan Thepruttana

LCSH: Fiber cement

LCSH: Fibrous composites

LCSH: Latex

LCSH: Sisal (Fiber)

Abstract: This research aims to develop natural fiber cement composites utilizing sisal fiber for reinforcement and substituting sand with perlite to decrease weight. To fabricate fiber cement composite, the mass ratio of Portland cement, sand, and perlite was maintained at 1:1.8:0.2, with a water-to-cement ratio of 0.5 by weight. Various lengths (1, 2, and 3 cm) and contents (0.25%, 0.5%, 0.75%, 1%, 1.25%, and 1.5% by weight of total mixture) of sisal fiber are utilized to assess their impact on properties of composite. Then, specimens underwent a curing period of 28 days. Additionally, the study involves comparing fiber coated with natural latex to prevent degradation and reduce water absorption. The physical properties, including bulk density and water absorption, were investigated using Archimedes principle. Microstructure observation was conducted using a scanning electron microscope (SEM) and optical microscope (OM). The mechanical property, specifically flexural strength, was determined using the principle of 3-point bending. The results demonstrate that while increasing fiber content and length generally decrease bulk density, composites with coated fibers exhibit consistently higher density compared to those with uncoated fibers. This is attributed to enhanced adhesion and reduced porosity due to the coating. Water absorption increases with fiber content, but the coating effectively mitigates this by preventing fiber water absorption with the latex and reducing matrix voids with the perlite. The flexural strength of coated fiber composites was higher than that of uncoated fiber composites. Additionally, longer length and lower content led to higher flexural strength. Microstructural analysis demonstrates that coated fibers have the capability to reduce porosity and effectively bond to cement, thereby enhancing both mechanical and physical properties. From this research, the optimal conditions for fiber cement development as utilizing coated sisal fibers with a length of 3 cm and a content of 0.25 wt%. This condition resulted in a bulk density of 1,709 kg/m3, water absorption of 15.8%, and flexural strength of 5.58 MPa

King Mongkut's Institute of Technology Ladkrabang. Central Library

Address: BANGKOK

Email: Lifelong@kmitl.ac.th

Name: Mettaya Kittiwan

Role: Thesis Advisor

Email : mettaya.ki@kmitl.ac.th

Name: Nittaya Keawprak

Role: Thesis Co-Advisor

Created: 2024

Modified: 2024-11-15

Issued: 2024-11-15

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Science

Descipline: Applied Physics

Grantor: King Mongkut's Institute of Technology Ladkrabang

©copyrights King Mongkut's Institute of Technology Ladkrabang

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