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Highway IDEA Program Cleaning Device to Remove Debris and Chemicals for Crack/Joint Sealing Final Report for NCHRP-IDEA Project 148 Prepared by: Yong K.Cho and John Bonsell, University of Nebraska - Lincoln August 2011 _____________________________________________________________ TRANSPORTATION RESEARCH BOARD OF THE NATIONAL ACADEMIES

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NCHRP IDEA PROGRAM COMMITTEE IDEA PROGRAMS STAFF STEPHEN R. GODWIN CHAIR Director for Studies and Special Programs SANDRA Q. LARSON JON M. WILLIAMS IOWA DOT Program Director, IDEA and Synthesis Studies INAM JAWED MEMBERS Senior Program Officer RICK COLLINS DEMISHA WILLIAMS Texas DOT Senior Program Assistant GARY A. FREDERICK New York State DOT EXPERT REVIEW PANEL GEORGENE GEARY MICHAEL SPRINKEL, Virginia DOT Georgia DOT RAY BRANSTITER, Nebraska DOR JOE MAHONEY RODNEY WEBER, Nebraska DOR University of Washington DICK SODEN Nebraska DOR MICHAEL MILES SCOTT MCINTYRE, City of Omaha, Nebraska. California DOT JAMES M. SIME Connecticut DOT MICHEAL M. SPRINKEL Virginia DOT A KEITH TURNER Colorado School of Mines RICHARD WEILAND FHWA LIAISON DAVID KUEHN Federal Highway Administration TRB LIAISON RICHARD CUNARD Transportation Research Board COOPERATIVE RESEARCH PROGRAM STAFF CRAWFORD F. JENCKS Deputy Director, Cooperative Research Programs

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Cleaning Device to Remove Debris and Chemicals for Crack/Joint Sealing NCHRP IDEA Project Final Report Project NCHRP-148 Prepared for the IDEA Program Transportation Research Board The National Academies Yong K. Cho John Bonsell University of Nebraska-Lincoln August, 2011

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Acknowledgements First and foremost, we acknowledge the NCHRP-IDEA program for their support; without their generous funding the development of this device could not have been possible. Very special thanks go to Dr. Inam Jawed and Mr. Michael Sprinkel for their advice and assistance throughout the project. Utmost appreciation is also extended to the regional panel of experts including Mr. Ray Branstiter, Mr. Rodney Weber, and Mr. Dick Soden at the Nebraska Department of Roads (NDOR) and Mr. Scott McIntyre at the City of Omaha, Nebraska. Their technical input and knowledge proved invaluable throughout the development of the research product.

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TABLE OF CONTENTS EXECUTIVE SUMMARY.………………………………………………………………... 4 1 IDEA PRODUCT…………………………………………………………………………... 6 2 CONCEPT AND INNOVATION………………………………………………………..… 7 3 INVESTIGATION…………………………………………………………….................... 8 3.1 INDUSTRY FEEDBACK AND FIELD TESTS…………………………………….... 9 3.1.1 FIRST LOCAL FIELD TEST WITH NDOR ……...…………………………… 9 3.1.2 REGIONAL EXPERT PANEL VISIT…………………………………………... 10 3.1.3 CITY OF OMAHA URBAN MAINTENACE CREW FIELD TEST………...… 11 3.1.4 ANNUAL TRANSPORTATION RESEARCH BOARD MEETING………...… 13 3.2 FIELD TEST DESIGN ISSUES………………………………………………………. 13 3.2.1 AIR COMPRESSOR COMPATIBIITY……………………………………….. 13 3.2.2 COUPLING TO THEIR POWER SUPPLY………………………………….... 14 3.2.3 DIRT/MOISTURE FILTER ON THE POWER SUPPLY…………….………… 14 3.2.4 BRUSH SELECTION ……………………………………………………..…….. 15 3.2.5 AIR BLASTING ………………………………………………………………… 16 3.2.6 ERGONOMIC SHAFT AND HANDLE ASSEMBLY………………………….. 17 3.2.7 GUIDE WHEEL ASSEMBLY…………………………………………………… 18 3.3 INTERNAL LABORATORY TEST………………………………………………….. 19 3.3.1 CHEMICAL RESIDUE REMOVAL EFFECTIVENESS………………….……. 20 3.3.2 HEAT GENERATION…………………………………………………….……... 21 3.3.3 CLEANING PREVIOUSLY SEALED CRACKS……………..………….…….. 22 3.4 ECONOMIC ANALYSIS……………………………………………………….…….. 23 4 PLANS FOR IMPLEMENTATION…………………………………………………..…... 24 5 CONCLUSIONS …………………….………………………………………………..…... 25 6 INVESTIGATOR PROFILE…………………………………………................................ 27 REFERENCES ……………………………………………………………........................ 28