Selection of Maintenance Repair Methods on Expansive Subgrades (0-4395-P2)

This manual is designed to assist TxDOT Maintenance Section Supervisors in the selection of an appropriate maintenance treatment for pavement distresses over expansive subgrade soils. In expansive soil environments, distresses such as roughness, longitudinal cracking, and fatigue cracking may frequently be encountered; therefore, this manual will focus on these distresses. A section on rutting also is included. This manual was compiled based upon the responses of a multi-district survey within T xDOT, interviews with district personnel, observations of field performance of various repair methods, and review of existing published guidelines and manuals relevant to pavement rehabilitation.