01500255

Monograph

http://www.trb.org/Main/Blurbs/169814.aspx

http://onlinepubs.trb.org.../NCHRP159_Final_Report.pdf

The aims of this Innovations Deserving Exploratory Analysis (IDEA) project were to improve and retrofit the design of a pavement crack cleaning device (CCD) developed in the previous IDEA Type I project (NCHRP-148), to make it more practical and functional by adding functions such as routing, hot air blasting and vacuuming. As an outcome of the previous research, a conceptual prototype of a crack cleaning device was innovatively designed, utilizing pneumatic power for air blasting and abrasive wire brushing to simultaneously remove debris or de-icing chemicals which were used in cold winter and remained in cracks. In the current project, a router, an electric heat lance and a vacuum system have been incorporated as possible options for the CCD. An electrical heat lance has been designed to properly warm the pavement and expel moisture to promote bond adhesion. In addition, a vacuum system has been developed as a means of collecting debris and dust to remove road hazards and improve operator safety while conforming to OSHA and EPA guidelines. Routing and saw cutting functions have been added to the CCD as well. For validation of the CCD in the field and to gain industry acceptance of the CCD technology, several industry demonstrations and field tests have been conducted. Multiple CCD units have been provided to the Nebraska Department of Roads (NDOR) for use during the full sealing season in 2012-2013, which was financially supported by NDOR. Also, demonstrations have been conducted at the Crafco Inc. manufacturing facility in Chandler, Arizona and at the City of Omaha, Nebraska, road maintenance division. Productivity data along with the crews’ feedback were collected during the field tests. The analyzed results showed that the CCD design concepts have been well received by all participating industries, who expect the CCD will positively impact highway road maintenance by improving productivity, safety and maintenance cost. Commercialization efforts currently are underway. If successful in commercialization and industry adoption, utilizing the CCD for crack and joint preparation would lead to an increase in overall quality of pavement maintenance, increase the useful life of pavements, and reduce costs toward rehabilitation or new construction of roadways.

This NCHRP-IDEA investigation was conducted by the University of Nebraska, Lincoln. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Highway IDEA Project 159

English

33p

2013-5

NCHRP-IDEA Program Project Final Report

Final Report

Print

Photos; References; Tables

Blast cleaning; Chemicals; Cleaning equipment; Debris removal; Demonstration projects; Equipment characteristics; Equipment design; Field tests; Joint sealing; Pavement cracking; Pavements; Prototypes; Surface preparation

Highways; Maintenance and Preservation; Pavements; Vehicles and Equipment; I60: Maintenance; I61: Equipment and Maintenance Methods

TRIS, TRB, ATRI

Nov 26 2013 8:21AM