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  • thermal performance of ult-revised-clearn

    Rights statement: This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 314, Part A, 2021 DOI: 10.1016/j.conbuildmat.2021.125585

    Accepted author manuscript, 3.93 MB, PDF document

    Embargo ends: 16/11/22

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

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Experimental study on thermal performance of ultra-high performance concrete with coarse aggregates at high temperature

Research output: Contribution to journalJournal articlepeer-review

Published
Article number125585
<mark>Journal publication date</mark>3/01/2022
<mark>Journal</mark>Construction and Building Materials
Issue numberPart A
Volume314
Number of pages12
Publication StatusPublished
Early online date16/11/21
<mark>Original language</mark>English

Abstract

Ultra-high performance concrete (UHPC) exhibits superior mechanical and durability performance with very high compressive strength. Compared with ordinary concrete, it is more environmentally friendly and has the great potential to be a practical solution to improve the sustainability of infrastructure. This study focuses on examining thermal properties of UHPC with coarse aggregates (CA-UHPC) subjected to temperature ranged from 20 °C ∼ 900 °C, including changes in macro and micro morphology before and after high temperatures, thermal conductivity, mass loss, specific heat and thermal expansion. The effects of high temperature, coarse aggregate and steel fiber content on the thermal performance of the material will be evaluated both qualitatively and quantitatively. Experimental results show that high temperature greatly affects thermal properties of CA-UHPC. Coarse aggregates also have a considerable influence on the thermal properties. Steel fibers, however, have little effect on the thermal properties. Based on the test results, meso calculation formulas are proposed to predict the thermal properties, which can be used in the design of structural components made of CA-UHPC.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 314, Part A, 2021 DOI: 10.1016/j.conbuildmat.2021.125585