01045149

Component

This paper describes the experience of Virginia Department of Transportation in evaluating dowel bar alignment measuring equipment, specifically, the MIT Scan-2 Device. The MIT Scan-2 was obtained on loan from the Concrete Pavement Technology Program. This program is managed by the Federal Highway Administration through a partnership with state highway agencies, industry, and academia. The main objectives of this evaluation were to evaluate the functionality of the MIT Scan-2 device and its applicability as a quality assurance tool in Virginia. The Device was used to determine dowel bar alignment in three jointed plain concrete pavements: one project with dowel bar inserter (DBI), and the other two had dowels on baskets. The projects covered different contractors, traffic levels, different service lives, and geographical zones. Repeatability of measurements was also evaluated. Selected number of joints was used for verification by coring, and recreating the dowel bar position in the laboratory. Based on the evaluation, it was concluded that MIT Scan-2 Device is user friendly, personnel can be trained on it very easily, simple field operation, it gave fairly accurate measurements for joints without interference, and it can be used as quality assurance tool.

01042056

07-2661

English

20p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures; Photos; References (10) ; Tables (5)

Alignment; Concrete pavements; Core samples; Dowels (Fasteners); Field tests

Dowel bar inserters; Dowel bars; Dowel baskets; Doweled joints (Pavements); Repeatability

Virginia

Highways; Maintenance and Preservation; Vehicles and Equipment; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2007 Paper #07-2661

TRIS, TRB

Feb 8 2007 7:22PM