Please use this identifier to cite or link to this item: https://rda.sliit.lk/handle/123456789/4054
Title: Durability and mechanical performance of glass and natural fiber-reinforced concrete in acidic environments
Authors: Justin, S.
Thushanthan, K
Tharmarajah, G
Keywords: Glass fiber reinforced concrete
Rice husk
Durability
Ultrasonic pulse velocity
Acidic environments
Issue Date: 28-Feb-2025
Publisher: Elsevier
Series/Report no.: Construction and Building Materials;Volume 465
Abstract: This study investigates the mechanical and durability characteristics of fiber-reinforced concrete when exposed to acidic environments. The research focuses on the effects of adding 1 % of treated coir fibers (TCF), treated rice husk fibers (TRH), and glass fibers (GF), along with 5 % silica fume (SF), to concrete. Experimental results show that the inclusion of these fibers and SF enhances both compressive and tensile strengths, with the most significant improvements observed in GF-reinforced concrete. The durability of the concrete was tested by immersing samples in acidic solutions with pH values of 3 and 5 for 28 days. Ultrasonic Pulse Velocity (UPV) tests indicated that the concrete's quality remained stable, while compressive strength tests revealed an increase in strength, particularly in samples exposed to pH 5. Sorptivity tests, which measure water absorption, indicated higher initial absorption rates due to the porous nature of fiber-reinforced concrete. However, as hydration progressed, the rate decreased. SEM images show that incorporating silica fume improves the microstructure of the specimens benefitting the strength of the structure. The study concludes that concrete reinforced with GF and SF exhibits superior mechanical properties and durability in acidic environments, making it a promising material for use in harsh conditions.
URI: https://rda.sliit.lk/handle/123456789/4054
ISSN: 0950-0618
Appears in Collections:Department of Civil Engineering

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