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Deploying weigh-in-motion installations on asphalt concrete pavements.
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2010-02-01
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[PDF-11.79 MB]
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Alternative Title:Project title: Alternatives weigh-in-motion plan for statewide data
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Edition:Technical report; Dec. 2006-Aug. 2007.
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Abstract:The strategic plan for establishing a vehicle weight monitoring net across Texas calls for deploying two
technology types – piezoelectric and bending plate systems, and seeks to install weigh-in-motion (WIM)
systems in roadways that are under new construction or re-construction. Because the goal is to provide
accurate truck weight data for pavement design, the strategic plan prefers deploying WIM installations on
500-ft continuously reinforced concrete pavements. While these pavements have, from experience, provided
suitable stable foundations for WIM sensors, building a continuously reinforced concrete pavement is
expensive. This project aimed to find less costly but equally viable alternatives for deploying WIM
installations by developing guidelines for finding sections within existing asphalt concrete pavements that
provide the level of smoothness, pavement support, and projected service life deemed suitable for weigh-inmotion
sites, particularly for installations that use piezoelectric technology. Additionally, the project sought
to evaluate the use of solar cells to power WIM systems, and wireless alternatives for data communication.
These alternatives become particularly relevant in areas where bringing electrical and telephone wires to the
site would add significantly to the cost of the WIM installation.
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