Cargando…

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

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 hav...

Descripción completa

Detalles Bibliográficos
Autores principales: Karimaei, Mahmood, Dabbaghi, Farshad, Dehestani, Mehdi, Rashidi, Maria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866832/
https://www.ncbi.nlm.nih.gov/pubmed/33572511
http://dx.doi.org/10.3390/ma14030647
_version_ 1783648165158715392
author Karimaei, Mahmood
Dabbaghi, Farshad
Dehestani, Mehdi
Rashidi, Maria
author_facet Karimaei, Mahmood
Dabbaghi, Farshad
Dehestani, Mehdi
Rashidi, Maria
author_sort Karimaei, Mahmood
collection PubMed
description 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.
format Online
Article
Text
id pubmed-7866832
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-78668322021-02-07 Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity Karimaei, Mahmood Dabbaghi, Farshad Dehestani, Mehdi Rashidi, Maria Materials (Basel) Article 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. MDPI 2021-01-31 /pmc/articles/PMC7866832/ /pubmed/33572511 http://dx.doi.org/10.3390/ma14030647 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Karimaei, Mahmood
Dabbaghi, Farshad
Dehestani, Mehdi
Rashidi, Maria
Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title_full Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title_fullStr Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title_full_unstemmed Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title_short Estimating Compressive Strength of Concrete Containing Untreated Coal Waste Aggregates Using Ultrasonic Pulse Velocity
title_sort estimating compressive strength of concrete containing untreated coal waste aggregates using ultrasonic pulse velocity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7866832/
https://www.ncbi.nlm.nih.gov/pubmed/33572511
http://dx.doi.org/10.3390/ma14030647
work_keys_str_mv AT karimaeimahmood estimatingcompressivestrengthofconcretecontaininguntreatedcoalwasteaggregatesusingultrasonicpulsevelocity
AT dabbaghifarshad estimatingcompressivestrengthofconcretecontaininguntreatedcoalwasteaggregatesusingultrasonicpulsevelocity
AT dehestanimehdi estimatingcompressivestrengthofconcretecontaininguntreatedcoalwasteaggregatesusingultrasonicpulsevelocity
AT rashidimaria estimatingcompressivestrengthofconcretecontaininguntreatedcoalwasteaggregatesusingultrasonicpulsevelocity