Performance of Rehabilitated Lightweight Aggregate Asphalt Concrete Pavements Under Wet and Heated Model Mobile Load Simulator Trafficking: A Comparative Study with the TxMLS

Walubita, Lubinda F.; Hugo, Fred; Epps, Amy L.; University of Texas at Austin. Center for Transportation Research; Texas Transportation Institute; University of Texas at El Paso. Center for Highway Materials Research

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Performance of Rehabilitated Lightweight Aggregate Asphalt Concrete Pavements Under Wet and Heated Model Mobile Load Simulator Trafficking: A Comparative Study with the TxMLS

2000-03-01
By Walubita, Lubinda F. ; Hugo, Fred ; Epps, Amy L.

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Creators:

Walubita, Lubinda F. ; Hugo, Fred ; Epps, Amy L.

Walubita, Lubinda F. ; Hugo, Fred ; Epps, Amy L. Less -
Corporate Creators:

University of Texas at Austin. Center for Transportation Research ; Texas Transportation Institute ; University of Texas at El Paso. Center for Highway Materials Research

University of Texas at Austin. Center for Transportation Research ; Texas Transportation Institute ; University of Texas at El Paso. Center for Highway Materials Research Less -
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Transfer Section
Subject/TRT Terms:

[+]

Accelerated Tests Asphalt Concrete Pavements Axle Loads Deformation Hot Tests Laboratory Tests Pavement Performance Rehabilitation (Maintenance) Rutting Stiffness Texas Mobile Load Simulator Water Damage Wet Tests
Publication/ Report Number:

FHWA/TX-00/0-1814-3
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States

Texas ; United States Less -
TRIS Online Accession Number:

00928081
Edition:

Research Report (9/1/98 to 8/31/99)
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

One-third-scale Model Mobile Load Simulator Mk3 (MMLS3) tests were conducted on US 281 in Jacksboro, Texas, adjacent to the full-scale Texas Mobile Load Simulator (TxMLS). The objectives were to investigate the moisture susceptibility and relative performance of the recently constructed Dustrol and Remixer rehabilitation surface layers and to compare rutting caused by the MMLS3 to rutting caused by the TxMLS. MMLS3 trafficking was conducted under hot (50 C measured at 25mm pavement depth) and wet (30 C measured at 25 mm pavement depth) conditions. The hot tests were run on the surface and a milled pad on both the north- and southbound lanes of the test site. The wet tests were run only on one milled pad in the north- and southbound carriageways. A total of 1.22 million MMLS3 axle loads were applied to the six test pads. Nondestructive stiffness measurements with the portable seismic pavement analyzer (PSPA) and seismic analysis of surface waves (SASW) devices were also performed intermittently during MMLS3 testing. A variety of laboratory tests -- volumetrics, moisture sensitivity, shear, indirect tensile strength (ITS) and fatigue, and semicircular bending (SCB) -- were also performed. From the results the relative susceptibility of Dustrol, Remixer, and the in-situ lightweight aggregate asphalt concrete (LWAC) layers to water damage could be determined, with the latter proving the most vulnerable. The MMLS3 and TxMLS deformations in the upper 90 mm surface layers correlated very well in terms of the respective stresses imposed by the two APT devices, after allowing for the difference in environmental conditions during trafficking.
Format:

PDF
Funding:

0-1814
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b303ab33c14b923d6aae3edac63844c577a4dbb939a30f0e2c32051a55b201af
Download URL:

https://rosap.ntl.bts.gov/view/dot/14911/dot_14911_DS1.pdf
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Performance of Rehabilitated Lightweight Aggregate Asphalt Concrete Pavements Under Wet and Heated Model Mobile Load Simulator Trafficking: A Comparative Study with the TxMLS

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