Mixture design and performance-based specification recommendations for cold patching mixtures

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dc.contributor.advisorProzzi, Jorge Alberto
dc.creatorRosales-Herrera, Vanessa Ivette
dc.date.accessioned2019-01-30T00:53:55Z
dc.date.available2019-01-30T00:53:55Z
dc.date.issued2007-05-19
dc.description.abstractCold patching asphalt mixtures constitute an essential element for the maintenance and rehabilitation of pavement infrastructure. Although this maintenance technique is both expensive and time consuming, it can minimize further damage and costly future repairs as well as increase user and vehicle safety. As a result, cold patching mixture performance is critical. Unfortunately, there is a lack of standard mixture design guidelines for homemade mixtures and performance-based mixture specifications for both homemade and containerized mixtures to ensure satisfactory field performance. This thesis develops a homemade mixture design for cold and wet weather areas by identifying the failure mechanisms of cold patching mixtures and analyzing the effects of gradation, aggregate shape, binder content and viscosity, curing time, temperature, and admixtures on the mixture workability and stability. Laboratory and accelerated pavement testing (APT) procedures are specifically defined for use with cold patching mixtures. Protocols and procedures are also defined for the field evaluations of these mixtures. Results from field evaluations are used as overall relative measures of field performance and as validation for those results obtained from laboratory and accelerated pavement tests. Furthermore, testing results, in conjunction with testing procedures developed as part of this thesis, are used to provide recommendations for performance-based specifications for homemade and containerized cold patching mixtures. Such recommendations provide interim guidelines for the rejection or approval of such mixtures. Overall, the protocols and testing procedures developed herein help ensure the material characteristics necessary for desired patch performance in the field, which in turn reduces the failure rate and makes cold patching a more cost-effective maintenance operation.en_US
dc.description.departmentCivil, Architectural, and Environmental Engineeringen_US
dc.format.mediumelectronicen_US
dc.identifierdoi:10.15781/T2G737Q84
dc.identifier.urihttp://hdl.handle.net/2152/72593
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectAsphalt concreteen_US
dc.subjectAsphalt mixture designen_US
dc.subjectAdditivesen_US
dc.subjectTexasen_US
dc.titleMixture design and performance-based specification recommendations for cold patching mixturesen_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen_US
thesis.degree.disciplineCivil Engineeringen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science in Engineeringen_US

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