Evaluation of Concrete and Mortars for Partial Depth Repairs
Partial-depth patching mixes must rapidly gain strength to allow the roadway to be reopened to traffic quickly. A patch should also bond well to the substrate to prevent the patch from separating from the existing material and be durable enough to withstand harsh winters. The objective of the research described in this report is to develop improved guidelines for evaluation of pre-bagged commercial patching mixtures and to recommend effective construction practices. To achieve these objectives, 13 different cementitious materials were selected and tested to determine key properties including strength gain, shrinkage, bond strength, and durability. The impact of the proposed research will be a better performing patch material as well as performance criteria that can be used to compare the materials tested in this program to new materials that will certainly be developed in the future. This research was conducted in four main phases, literature review and development of a testing plan and three phases of laboratory testing campaigns. The most commonly available acceptance specification for partial-depth patching materials is the ASTM C928. This specification was followed and the outcomes of each of the recommended tests were evaluated in context of the performance of the patching materials. Several additional tests were developed and conducted to evaluate the bonding properties of patching materials; correlations between lab measured properties were also evaluated. Through aforementioned testing and analysis, a laboratory testing based acceptance procedure was developed for partial-depth patching materials to be used by Minnesota Department of Transportation (MnDOT).
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Corporate Authors:
University of Minnesota, Duluth
Department of Civil Engineering, 1405 University Drive
Duluth, MN United States 55812Villanova University
Department of Civil and Environmental Engineering
800 Lancaster Avenue
Villanova, PA United States 19085Minnesota Department of Transportation
Research Services and Library
395 John Ireland Boulevard
St Paul, MN United States 55155 -
Authors:
- Dave, Eshan V
- Dailey, Jay
- Musselman, Eric
- Publication Date: 2014-11
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 233p
Subject/Index Terms
- TRT Terms: Bond strength (Materials); Cement; Concrete pavements; Durability; Evaluation; Freeze thaw durability; Guidelines; Laboratory tests; Literature reviews; Materials tests; Patching; Patching mortar
- Geographic Terms: Minnesota
- Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements; I32: Concrete; I61: Equipment and Maintenance Methods;
Filing Info
- Accession Number: 01549013
- Record Type: Publication
- Report/Paper Numbers: MN/RC 2014-41, CTS Project #2013028
- Contract Numbers: (C) 99008, (wo) 48
- Files: TRIS, ATRI, STATEDOT
- Created Date: Dec 29 2014 11:06AM