01656626

Component

https://doi.org/10.1177/0361198118758675

In this paper, the traffic speed deflectometer (TSD), a device used for network level structural evaluation, is assessed. TSD testing was performed in nine states on a total of 5,928 miles (some repeated) during three time periods: November 2013, May to July 2014, and June to September 2015. This paper presents (1) the results of repeatability and comparison of the TSD with the falling weight deflectometer (FWD), (2) the results of the comparison of TSD measurements with typical pavement management system (PMS) data, and (3) an approach that can be implemented by State Highway Agencies (SHAs) to incorporate indices derived from TSD data into their PMS decision-making process. The results show that repeated TSD measurements follow similar trends and the TSD measurements and FWD measurements on the same pavement sections follow similar trends as well. Comparing TSD measurements with PMS surface condition data confirmed that the TSD provided valuable information about the structural condition of the tested pavement sections that cannot be derived from the already available pavement surface condition as part of an agency’s PMS. An example of how TSD information can be used to refine the triggered maintenance treatment category as part of a network-level PMS analysis is presented for a roughly 75-mile section of I-81 south in Virginia.

18-05514

English

pp 348-359

2018-12

Transportation Research Record: Journal of the Transportation Research Board

Digital/other

Figures (6) ; References (21) ; Tables (4)

Falling weight deflectometers; Pavement management systems

Pavement structural condition; Repeatability; Traffic speed deflectometers

Highways; Pavements

TRIS, TRB, ATRI

Dec 22 2017 10:39AM

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