Laboratory study of impact effects on lightweight concrete containing bagasse and LECA

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Khaloo A.R.; Borsi S.A.

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Journal Paper

Paper Information

Journal: Sharif Journal of Civil Engineering Year:2023 | Volume:39 | Issue:2 Page(s): 29-38

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Information Journal Paper

Title

Laboratory study of impact effects on lightweight concrete containing bagasse and LECA

Author(s)

Khaloo A.R. | Borsi S.A. | Issue Writer Certificate

Keywords

Impact resistance

compressive strength

Bagasse

LECA

lightweight concrete

Abstract

Concrete quality control tests usually focus on the compressive strength of concrete, while neglecting other important properties such as impact and explosion resistance, which are essential for creating resilient concrete structures. Additionally, in the process of refining sugarcane, Bagasse, a yellow fiber that is considered a waste product, is produced. Khuzestan province alone produces around one million tons of Bagasse annually, which leads to environmental concerns. To address these issues, this research investigates the mechanical properties and Impact resistance of concrete containing lightweight LECA aggregates and Bagasse fibers under compressive and impact loads. Initially, a target mix scheme is determined, and samples are made and tested after curing without the addition of Bagasse and LECA. Then, samples are made with the mentioned mixing design and the combination of Bagasse and LECA by weight ratio of (Bagasse unit, LECA unit). Additionally, samples using LECA (without Bagasse) with 10%, 20%, and 30% replacement of aggregates are made and tested after curing. Compressive and impact tests are performed on all samples in accordance with regulations using appropriate testing machines and procedures. Results indicate that concrete containing lightweight LECA and Bagasse fibers has a higher Impact resistance than ordinary concrete, and that the use of LECA in concrete can create structural lightweight concrete.

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