Study on Temperature Correction of Asphalt Pavement Deflection Based on the Deflection Change Rate

Hu, X; Li, J; Hu, Y; Sun, L

Study on Temperature Correction of Asphalt Pavement Deflection Based on the Deflection Change Rate

Hu, X Li, J Hu, Y Sun, L

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: APPLIED SCIENCES-BASEL, 2023, 13, (1)
Issue Date:: 2023-01

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Field	Value	Language
dc.contributor.author	Hu, X
dc.contributor.author	Li, J
dc.contributor.author	Hu, Y
dc.contributor.author	Sun, L https://orcid.org/0000-0002-9830-1527
dc.date.accessioned	2024-04-11T03:31:05Z
dc.date.available	2024-04-11T03:31:05Z
dc.date.issued	2023-01
dc.identifier.citation	APPLIED SCIENCES-BASEL, 2023, 13, (1)
dc.identifier.issn	2076-3417
dc.identifier.issn	2076-3417
dc.identifier.uri	http://hdl.handle.net/10453/177715
dc.description.abstract	<jats:p>The pavement deflection measured by falling weight deflectometer (FWD) detection equipment can be used to determine the bearing capacity of a pavement structure through modulus backcalculation to provide suggestions for pavement structure maintenance. However, because asphalt mixtures are temperature-sensitive materials, they are greatly affected by temperature, and changes in temperature can cause their mechanical properties to vary and affect the structural bearing capacity. Therefore, this paper conducts a pavement deflection test on an in-service highway asphalt pavement at different temperatures in different seasons. The representative temperature of the asphalt layer was determined through comparative analysis. The temperature’s effective influence distance on the deflection basin was found, and a more suitable temperature correction model for the deflection basin of asphalt pavement was established. The results showed that the temperature at the middle layer depth of the asphalt layer is more suitable as the representative temperature of the asphalt layer. The effective influence range of temperature on the deflection basin is 90 cm. The deflection change rate before and after the temperature correction at a radial distance of 20 cm is more appropriate for the temperature correction of the deflection basin.</jats:p>
dc.language	English
dc.publisher	MDPI
dc.relation.ispartof	APPLIED SCIENCES-BASEL
dc.relation.isbasedon	10.3390/app13010367
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Study on Temperature Correction of Asphalt Pavement Deflection Based on the Deflection Change Rate
dc.type	Journal Article
utslib.citation.volume	13
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Computer Science
utslib.copyright.status	open_access	*
dc.date.updated	2024-04-11T03:31:02Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	13
utslib.citation.issue	1

Abstract:

The pavement deflection measured by falling weight deflectometer (FWD) detection equipment can be used to determine the bearing capacity of a pavement structure through modulus backcalculation to provide suggestions for pavement structure maintenance. However, because asphalt mixtures are temperature-sensitive materials, they are greatly affected by temperature, and changes in temperature can cause their mechanical properties to vary and affect the structural bearing capacity. Therefore, this paper conducts a pavement deflection test on an in-service highway asphalt pavement at different temperatures in different seasons. The representative temperature of the asphalt layer was determined through comparative analysis. The temperature’s effective influence distance on the deflection basin was found, and a more suitable temperature correction model for the deflection basin of asphalt pavement was established. The results showed that the temperature at the middle layer depth of the asphalt layer is more suitable as the representative temperature of the asphalt layer. The effective influence range of temperature on the deflection basin is 90 cm. The deflection change rate before and after the temperature correction at a radial distance of 20 cm is more appropriate for the temperature correction of the deflection basin.

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http://hdl.handle.net/10453/177715