How-To
Quantifying the Effects of Preservation Treatments on Pavement Performance
NCHRP Report 858 establishes a framework for quantifying the impact of pavement preservation. The framework is rooted in the methodology originally formulated for the Indiana DOT by Ong et al. in 2010. This methodology takes into account two critical factors as shown in figure 2.
By considering these elements, the framework provides a comprehensive approach to assessing and addressing the impact of treatments on infrastructure longevity and performance. Through these systematic evaluations, the agencies can make informed decisions about the long-term efficacy and sustainability of the chosen pavement treatment.
Determine the Initial Condition Jump
In Step 1, determine the initial condition jump by evaluating the immediate change in pavement performance resulting from the treatment application. This step serves as a baseline to gauge the treatment's immediate impact on the road's condition.
Determine the Influence
In Step 2, track the influence of the treatment over time by continuously monitoring the performance of the treated pavement section and comparing it to an untreated control section.
Figure 2. Effects of preservation treatments on pavement condition (NCHRP 858)
