RESEARCH ARTICLE
Compressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members
Haicheng Niu1, *, Yonggui Wang1, Xianggang Zhang1, Xiaojing Yin2
Article Information
Identifiers and Pagination:
Year: 2017Volume: 11
First Page: 270
Last Page: 280
Publisher ID: TOCIEJ-11-270
DOI: 10.2174/1874149501711010270
Article History:
Received Date: 13/01/2017Revision Received Date: 14/03/2017
Acceptance Date: 13/04/2017
Electronic publication date: 19/06/2017
Collection year: 2017
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Introduction:
Freeze-thaw resistance of recycled aggregate concrete with partial or total replacement of recycled aggregate compared with that of natural aggregate concrete was investigated in this paper.
Method:
Ninety specimens were fabricated to study the influence of different recycled aggregate replacement ratios on the surface scaling, mass loss, and residual compressive strength after 100 freeze-thaw cycles.
Results:
The experiment results indicate that the type of recycled aggregate and its replacement ratio have significant effects on the freeze-thaw performance. The cubic compressive strength of recycled aggregate concrete is overall slightly lower than that of normal concrete. After 100 freeze-thaw cycles, the compressive strength decreases and the reduction extent increases with increasing replacement rate of recycled aggregate. The surface scaling of reinforced recycled concrete prisms tends to be more severe with the increase of freeze-thaw cycles.
Conclusion:
Furthermore, a notable rise in mass loss and the bearing capacity loss is also found as the substitution ratio increases. Under the same replacement rate, recycled fine aggregate causes more negative effects on the freeze-thaw resistance than recycled coarse aggregate.