Author(s):
S. Dessouky, A.T. Papagiannakis
Publication Date
December 2012
Abstract
Level-up patching is a common corrective maintenance activity in Texas performed by most districts. It involves laying down a thin asphalt mix layer over an existing pavement in areas of sagging or rutting to improve the ride score and reduce pavement roughness. Level-up patching is used as a surface preparation step prior to another surface treatment operation or as a final exposed surface. This handbook describes in-detail the best practices of level-up patching, as established from a thorough literature review and information collected from various TxDOT districts through survey questionnaires and site visits. This handbook is intended for use by TxDOT field personnel as well as contractors that perform this work for TxDOT.
Report Number:
0-6667-P1
Keywords:
blade operation, laydown operation, Level-up patching, LRA
Link(s):
Document/Product
http://tti.tamu.edu/documents/0-6667-P1.pdf
Publication/Product Request
TTI reports and products are available for download at no charge. If an electronic version is not available and no instructions on how to obtain it are given, contact the TTI Library.