Experimental Investigation of Pothole Repair Materials

Published on Jan 1, 2020
· DOI :10.1007/978-3-030-48679-2_2
Debaroti Ghosh5
Estimated H-index: 5
,
Mugurel Turos14
Estimated H-index: 14
(UMN: University of Minnesota),
Mihai Marasteanu32
Estimated H-index: 32
Sources
Abstract
Pothole repairs represent a major maintenance item in the budget of many highway agencies. Currently, there are no required specifications for patching materials. Although the appearance of potholes every spring is a major public relations concern, limited experimental work has been performed on pothole repair materials to evaluate their mechanical properties. The focus of this study is to investigate relevant mechanical properties of current pothole materials. A total of six materials consisting of both summer and winter mixtures were used in this study. Several issues were encountered during the sample preparation of cold mixtures, such as the need of significant curing to gain strength and stiffness at low temperatures. For the cold mixtures, only Indirect Tensile creep and strength testing were performed, while for the other mixtures fracture energy and toughness were also determined. Experiments were also performed to evaluate if the addition of graphene nano-platelets (GNP) to patching materials improve their properties. Based on the results, several recommendations were made to improve the durability of pothole repair materials.
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AbstractCold-mix asphalt (CMA) is routinely used for temporary or emergency pothole repair to prevent further deterioration of the asphalt pavement until resurfacing can be performed. One of the difficulties encountered with CMA is that the majority of laboratory evaluations and tests were originally designed for hot-mix asphalt. There exists an incomplete understanding between viscosity gain of cold-mix binder (CMB) and strength development of CMA. The objective was to develop effective test pr...
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Stakeholders around Europe where asked to share their experiences with different materials and procedures for pothole repairs in a questionnaire. In a lot of cases either materials or procedures were used that are not suitable for a durable pothole repair, possibly because no common regulations or requirements for materials exist in the different countries. Therefore, normal and new approaches which target the medium- or long-term repair of potholes have been studied. In a catalogue of tests, ev...
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