295
Views
1
CrossRef citations to date
0
Altmetric
Research Article

Enhancing the thermal properties of cement composites through substitution of the fine aggregate using metallic material

, , &
Article: 2144311 | Received 19 Jul 2022, Accepted 31 Oct 2022, Published online: 15 Nov 2022
 

ABSTRACT

In this study, copper powder was substituted for up to 50% of fine aggregate in cement mortar. The effects of employing copper powder on ice-melting performance were studied. To verify the derived ice-melting results, thermal properties were analyzed. Porosity analysis, which is highly correlated with thermal properties, was investigated. Microstructure analysis included computed tomography analysis was performed. It was found that the cement mortar with 10% copper powder was the most efficient in terms of ice-melting performance and thermal properties improvement. 10% copper powder incorporation shortened the ice-melting time by about 20 minutes or more, and also improved the thermal conductivity and heat flux by 3 and 2 times more, respectively. The porosity test and computed tomography analysis have demonstrated that copper powder can produce an agglomeration effect if the amount is higher than 10% in the cement mortar system. The porosity of the 10% copper powder incorporation was decreased by about 5% compared with plain mortar, while that of the 30% and 50% copper powder incorporation was increased by about 2.5% and 8%, respectively. In addition, 10% copper powder incorporation had the highest compressive strength and flexural strength. As a result, 10% copper powder substitution was an optimal choice.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) (No. 2022R1A2C1010293).

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.