01593507

Component

Pavement preservation can be very effective tool to extend functional and structural integrity of existing highways before they need major rehabilitation or replacement. Opportunities are within reach to preserve and extend the service life of the pavement infrastructure while improving safety, minimizing congestion during construction activities, and reducing energy and impact to the environment. There are no general guidelines available for developing performance-related specifications (PRS) for pavement preservation treatments that correlate key engineering properties to treatment quality and long-term performance. This paper documents the process to facilitate development of PRS for pavement preservation treatments that provide a direct relationship of key construction characteristics to performance. The development process for preservation treatments has unique differences when compared with that of rehabilitation and new construction of pavement. The differences include: non-structural nature of preservation treatments, functional performance measures, and construction materials and processes. Data from the Long-Term Pavement Performance (LTPP) experiments in service pavement sections were used to develop relationships between Acceptance Quality Characteristics (AQCs) and expected performance for diamond grinding. The pavement sections which experienced a decrease in International Roughness Index (IRI) after grinding also exhibit reduction in dynamic axle loads. The variations in the axle load spectra are used to explain the differences in the predicted pavement performance in terms of cracking, faulting and IRI. Linear relationships between changes in initial IRI and long-term faulting and roughness progressions were observed. Initial IRI change due to diamond grinding seems to be associated with long-term cracking performance non-linearly.

This paper was sponsored by TRB committee AHD18 Standing Committee on Pavement Preservation.

01584066

16-6240

English

17p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Axle load force; Diamond grinding; Pavement cracking; Pavement distress; Pavement performance; Performance based specifications

International Roughness Index; Long-Term Pavement Performance Program

Pavement preservation

Highways; Maintenance and Preservation; Pavements

Transportation Research Board Annual Meeting 2016 Paper #16-6240

TRIS, TRB, ATRI

Jan 12 2016 6:46PM