Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica

Calcium carbide residue (CCR) is the end-product of production of acetylene gas for the applications such as welding, lighting, ripening of fruits, and cutting of metals. Due to its high pH value, disposing of CCR as a landfill increases the alkalinity of the environment. Therefore, due to its high...

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Autores principales:	Musa Adamu, Yasser E. Ibrahim, Mohamed E. Al-Atroush, Hani Alanazi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	calcium carbide residue nano silica pozzolanic reaction calcium hydroxide compressive strength Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/8483323f1b304a4292d21df55eb75f5d
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spelling	oai:doaj.org-article:8483323f1b304a4292d21df55eb75f5d2021-11-25T18:15:05ZMechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica10.3390/ma142269601996-1944https://doaj.org/article/8483323f1b304a4292d21df55eb75f5d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6960https://doaj.org/toc/1996-1944Calcium carbide residue (CCR) is the end-product of production of acetylene gas for the applications such as welding, lighting, ripening of fruits, and cutting of metals. Due to its high pH value, disposing of CCR as a landfill increases the alkalinity of the environment. Therefore, due to its high calcium content, CCR is mostly blended with other pozzolanic materials, together with activators as binders in the cement matrix. In this study, cement was partially substituted using CCR at 0%, 7.5%, 15%, 22.5% and 30% by weight replacement, and nano silica (NS) was utilized as an additive by weight of binder materials at 0%, 1%, 2%, 3% and 4%. The properties considered were the slump, the compressive strength, the flexural strength, the splitting tensile strength, the modulus of elasticity, and the water absorption capacity. The microstructural properties of the concrete were also examined through FESEM and XRD analysis. The results showed that both CCR and NS increase the concrete’s water demand, hence reducing its workability. Mixes containing up to 15% CCR only showed improved mechanical properties. The combination of CCR and NS significantly improved the mechanical properties and decreased the concrete’s water absorption through improved pozzolanic reactivity as verified by the FESEM and XRD results. Furthermore, the microstructure of the concrete was explored, and the pores were refined by the pozzolanic reaction products. The optimum mix combination was obtained by replacing 15% cement using CCR and the addition of 2% NS by weight of cementitious materials. Therefore, using a hybrid of CCR and NS in concrete will result in reduction of cement utilization in concrete, leading to improved environmental sustainability and economy.Musa AdamuYasser E. IbrahimMohamed E. Al-AtroushHani AlanaziMDPI AGarticlecalcium carbide residuenano silicapozzolanic reactioncalcium hydroxidecompressive strengthTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6960, p 6960 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	calcium carbide residue nano silica pozzolanic reaction calcium hydroxide compressive strength Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	calcium carbide residue nano silica pozzolanic reaction calcium hydroxide compressive strength Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Musa Adamu Yasser E. Ibrahim Mohamed E. Al-Atroush Hani Alanazi Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
description	Calcium carbide residue (CCR) is the end-product of production of acetylene gas for the applications such as welding, lighting, ripening of fruits, and cutting of metals. Due to its high pH value, disposing of CCR as a landfill increases the alkalinity of the environment. Therefore, due to its high calcium content, CCR is mostly blended with other pozzolanic materials, together with activators as binders in the cement matrix. In this study, cement was partially substituted using CCR at 0%, 7.5%, 15%, 22.5% and 30% by weight replacement, and nano silica (NS) was utilized as an additive by weight of binder materials at 0%, 1%, 2%, 3% and 4%. The properties considered were the slump, the compressive strength, the flexural strength, the splitting tensile strength, the modulus of elasticity, and the water absorption capacity. The microstructural properties of the concrete were also examined through FESEM and XRD analysis. The results showed that both CCR and NS increase the concrete’s water demand, hence reducing its workability. Mixes containing up to 15% CCR only showed improved mechanical properties. The combination of CCR and NS significantly improved the mechanical properties and decreased the concrete’s water absorption through improved pozzolanic reactivity as verified by the FESEM and XRD results. Furthermore, the microstructure of the concrete was explored, and the pores were refined by the pozzolanic reaction products. The optimum mix combination was obtained by replacing 15% cement using CCR and the addition of 2% NS by weight of cementitious materials. Therefore, using a hybrid of CCR and NS in concrete will result in reduction of cement utilization in concrete, leading to improved environmental sustainability and economy.
format	article
author	Musa Adamu Yasser E. Ibrahim Mohamed E. Al-Atroush Hani Alanazi
author_facet	Musa Adamu Yasser E. Ibrahim Mohamed E. Al-Atroush Hani Alanazi
author_sort	Musa Adamu
title	Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
title_short	Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
title_full	Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
title_fullStr	Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
title_full_unstemmed	Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica
title_sort	mechanical properties and durability performance of concrete containing calcium carbide residue and nano silica
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8483323f1b304a4292d21df55eb75f5d
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Mechanical Properties and Durability Performance of Concrete Containing Calcium Carbide Residue and Nano Silica

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