A study on mechanical properties of mortar with sugarcane bagasse fiber and bagasse ash
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ORIGINAL ARTICLE
A study on mechanical properties of mortar with sugarcane bagasse fiber and bagasse ash Bruno Ribeiro1,2 · Yosuke Yamashiki1 · Takashi Yamamoto2 Received: 3 January 2020 / Accepted: 3 June 2020 © Springer Japan KK, part of Springer Nature 2020
Abstract The sugarcane residues from mills or boilers, such as bagasse and bagasse ash, may be a way to make both the civil engineering industry and the sugar/alcohol industry more sustainable. In this research, the sugarcane residues were classified into three different categories: bagasse fiber, bagasse sand and bagasse ash. Therefore, these residues were utilized to prepare the specimens and, subsequently, strength tests were applied to investigate the mechanical properties of mortars of different mixtures. This study revealed that mortar added with 2% of bagasse fiber showed a higher percentage of water retention when compared to the mortar specimens without fiber due to the high amount of bagasse fiber. Consequently, the drying shrinkage strain could be reduced to a smaller level of the PVA fiber specimens. Finally, in all cases in which the fiber was added, the ductility of the mortar was increased when compared to a mortar specimen without fibers. Keywords Sugarcane bagasse fibers · Sugarcane bagasse ash · Mechanical properties · Adhesion strength · Shrinkage
Introduction In several countries in the world, sugarcane is the main raw material used in the sugar/alcohol industry. The sugar manufacturing process generates by-products and residues. Among these by-products and residues, sugarcane bagasse, a fibrous residue, is extracted from the broth of the sugarcane by the mills [1–3]. Currently, the bagasse, which has a moisture content of 40–50%, is used as a primary fuel source in sugar/alcohol mills [2]. The bagasse burned as fuel in the boilers generates residual products composed of sand and ash [4, 5]. The latter is rich in silica and has a potential for pozzolanic reactivity and fill effect in concrete and mortar mixtures [6]. The use of bagasse ash as a partial substitute for cement and/or the use of bagasse sand as a partial replacement for fine aggregates could contribute to reducing the environmental impacts caused by rock mining or sand extraction * Bruno Ribeiro [email protected]‑u.ac.jp 1
Graduate School of Advanced Integrated Studies in Human Survivability, Kyoto University, Kyoto, Japan
Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan
2
in rivers and reservoirs. Furthermore, it reduces the environmental impact caused by the incorrect disposal of these residues in crops or inappropriate sites. Moreover, the use of bagasse ash may have downstream positive effects on cement’s environmental impact through the reduction of CO2 emissions, a severe issue to the civil engineering industry [3, 6–11]. However, as the bagasse is burned at uncontrolled temperatures and time, there is also unburned bagasse mixed in with the sand and ash [12–14], as can be seen i
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