Flexural strength of weathered granites: Influence of freeze and thaw cycles

•Non-destructive testing of Australian Granite’s.•Effect of freeze-thaw cycles on the flexural strength of granite.•Ultrasonic pulse velocity of unweathered and weathered granite.•Correlation between flexural strength and UPV. The effect of freeze-thaw cycles (FTC) on the flexural strength of granit...

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Bibliographic Details
Published in:Construction & building materials 2017-12, Vol.156, p.891-901
Main Authors: Noor-E-Khuda, Sarkar, Albermani, Faris, Veidt, Martin
Format: Article
Language:English
Subjects:
Chemical properties
Concrete
Evaluation
Flexural tensile strength
Freeze-thaw cycles
Granite
Influence
Services
Ultrasonic pulse velocity
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Summary:•Non-destructive testing of Australian Granite’s.•Effect of freeze-thaw cycles on the flexural strength of granite.•Ultrasonic pulse velocity of unweathered and weathered granite.•Correlation between flexural strength and UPV. The effect of freeze-thaw cycles (FTC) on the flexural strength of granite panels is investigated in this paper. Specimens from three different types of Australian granite were sampled. Fifteen specimens were used as control (unweathered) specimens while another 36 specimens were subjected to accelerated weathering consisting of 100 FTC over a period of 34days. A controlled freeze-thaw chamber and a temperature range between −10°C and +70°C was used for this purpose. Ultrasonic pulse velocity (UPV) of the specimens was measured before and after FTC testing. Flexural strength tests were conducted after the FTC were completed. Results showed that thin granite veneers suffered physical degradation accompanied by a noticeable reduction in UPV, density and flexural strength following FTC. Correlation between flexural strength and UPV and between unweathered and weathered UPV is proposed for the three types of Australian granite used in this paper.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2017.09.049