Research
Success
Investigating Prime versus Curing: Where, When, and Why
The problem:
Designers and construction crews often face uncertainty about when and where to use prime coats versus curing treatments in pavement construction — materials that aren’t part of structural design but are essential for performance.
Our approach:
TTI conducted a statewide survey, laboratory analysis and field observations to evaluate the role of prime materials across multiple TxDOT base course types. The team created clear guidelines outlining when, where and why prime should be applied depending on the material and construction phase.
The Outcome:
The research confirmed that prime coats consistently improve bonding between layers and reduce early pavement failures. The guidance developed by TTI provides TxDOT personnel with practical tools for selecting and applying prime treatments correctly, enhancing pavement durability and long-term performance.
