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Open AccessArticle

Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar

1
Berkeley Education Alliance for Research in Singapore (BEARS), Singapore 138602, Singapore
2
Future Cities Laboratory, Singapore ETH-Centre, Singapore 138602, Singapore
3
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
4
Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA
5
Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(18), 6587; https://doi.org/10.3390/app10186587
Received: 31 August 2020 / Revised: 16 September 2020 / Accepted: 17 September 2020 / Published: 21 September 2020
(This article belongs to the Special Issue High-Performance Eco-Efficient Concrete)
In this study, a sustainable mortar mixture is developed using renewable by-products for the enhancement of mechanical properties and fracture behavior. A high-volume of fly ash—a by-product of coal combustion—is used to replace Portland cement while waste by-products from the production of engineered bamboo composite materials are used to obtain bamboo fibers and to improve the fracture toughness of the mixture. The bamboo process waste was ground and size-fractioned by sieving. Several mixes containing different amounts of fibers were prepared for mechanical and fracture toughness assessment, evaluated via bending tests. The addition of bamboo fibers showed insignificant losses of strength, resulting in mixtures with compressive strengths of 55 MPa and above. The bamboo fibers were able to control crack propagation and showed improved crack-bridging effects with higher fiber volumes, resulting in a strain-softening behavior and mixture with higher toughness. The results of this study show that the developed bamboo fiber-reinforced mortar mixture is a promising sustainable and affordable construction material with enhanced mechanical properties and fracture toughness with the potential to be used in different structural applications, especially in developing countries. View Full-Text
Keywords: fiber-reinforced; natural fibers; bamboo; sustainable mortar; mechanical characterization; by-products; toughness fiber-reinforced; natural fibers; bamboo; sustainable mortar; mechanical characterization; by-products; toughness
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MDPI and ACS Style

Maier, M.; Javadian, A.; Saeidi, N.; Unluer, C.; Taylor, H.K.; Ostertag, C.P. Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar. Appl. Sci. 2020, 10, 6587.

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