Treatments and Quantification for Noise Reduction and Improved Surface Characteristics
Community & Cultural Concerns, Environmental Process
Research Idea Scope
I. Research Problem Statement – Concerns about pavement noise continue to be expressed in many urban areas in the United States. Comprehensive studies have been completed in Europe resulting in significant changes in material selection, pavement design, and surface preparation, however, very little work has been done to study pavement generated noise in the Unites States, yet much has been done to evaluate surface characteristics such as friction resistance and smoothness. However, noise and surface characteristics should be studied together as the two areas generally influence each other. Preventive maintenance techniques have been used to improve friction and smoothness and can in turn improve the quality of life for users as well as people living and working near urban highways. Further, the savings to highway agencies in potentially reducing expenditures on noise barriers could be significant as well as the valuations of properties bordering highways.
It is expected the study will progress in two phases. The first phase will include a literature review and a proposed experimental plan for the project. The second phase will be fulfilling the experimental plan and analysis provided in a final report. The proposed deliverables will be a final report summarizing the completed research. It is expected that the report will outline the effects of preventive maintenance on noise and surface characteristics. Guidelines for effects of surface treatments on noise measurements will be provided as a deliverable
II. Research Objective – The project objective will be to examine the variables affecting noise and surface characteristics. This will include quantify the variables, influences, and interaction on noise and surface characteristics. Both interior and exterior noise measurements will be made. Pavement type and effect of maintenance treatment on noise and surface characteristics will be quantified.
Urgency and Payoff
Noise walls are being constructed in numerous locations in the United States to mitigate noise from highway traffic. These walls are estimated to cost nearly $3 million per mile. A more cost effective mitigation plan would be to provide pavement surfaces that minimize noise and eliminate the need for noise walls. These types of pavement surfaces, open graded asphalt friction courses, SMA, and bonded wearing courses, can be applied for less than $25,000 per lane mile. Thus the payoff potential is very clear.
The proposed deliverables will be a final report summarizing the completed research. It is expected that the report will outline the effects of preventive maintenance on noise and surface characteristics. Guidelines for effects of surface treatments on noise measurements will be provided as a deliverable
TRB Research Needs Database, AFK40, Characteristics of Bituminous-Aggregate Combinations To Meet Surface Requirements