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Article

Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity

1
Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol 47148-71167, Iran
2
Centre for Infrastructure Engineering, Western Sydney University, Penrith, NSW 2751, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Dolores Eliche Quesada
Materials 2021, 14(3), 647; https://doi.org/10.3390/ma14030647
Received: 6 January 2021 / Revised: 21 January 2021 / Accepted: 26 January 2021 / Published: 31 January 2021
(This article belongs to the Special Issue Emerging Trends in Structural Health Monitoring)
In recent years, the overuse and exploitation of coal resources as fuel in industry has caused many environmental problems as well as changes in the ecosystem. One way to address this issue is to recycle these materials as an alternative to aggregates in concrete. Recently, non-destructive tests have also been considered by the researchers in this field. As there is limited work on the evaluation of the compressive strength of concrete containing coal waste using non-destructive tests, the current study aims to estimate the compressive strength of concrete containing untreated coal waste aggregates using the ultrasonic pulse velocity (UPV) technique as a non-destructive testing approach. For this purpose, various concrete parameters such as the compressive strength and UPV were investigated at different ages of concrete with different volume replacements of coarse and fine aggregates with coal waste. The test results indicate that 5% volume replacement of natural aggregates with untreated coal waste improves the average compressive strength and UPV of the concrete mixes by 6 and 1.2%, respectively. However, these parameters are significantly reduced by increasing the coal waste replacement level up to 25%. Furthermore, a general exponential relationship was established between the compressive strength and the UPV associated with the entire tested concrete specimens with different volume replacement levels of coal waste at different ages. The proposed relationship demonstrates a good correlation with the experimental results. View Full-Text
Keywords: concrete; untreated coal waste; fine recycled aggregates; coarse recycled aggregates; recycling; ultrasonic pulse velocity (UPV); compressive strength concrete; untreated coal waste; fine recycled aggregates; coarse recycled aggregates; recycling; ultrasonic pulse velocity (UPV); compressive strength
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MDPI and ACS Style

Karimaei, M.; Dabbaghi, F.; Dehestani, M.; Rashidi, M. Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity. Materials 2021, 14, 647. https://doi.org/10.3390/ma14030647

AMA Style

Karimaei M, Dabbaghi F, Dehestani M, Rashidi M. Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity. Materials. 2021; 14(3):647. https://doi.org/10.3390/ma14030647

Chicago/Turabian Style

Karimaei, Mahmood, Farshad Dabbaghi, Mehdi Dehestani, and Maria Rashidi. 2021. "Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity" Materials 14, no. 3: 647. https://doi.org/10.3390/ma14030647

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