Development of the Next-Generation, Low-Maintenance Concrete Surface

In 2005, the Portland Cement Association, through the American Concrete Pavement Association, funded research to improve the noise performance of concrete pavements. The International Grooving and Grinding Association, through its affiliated contractors, supported the research effort through equipment development and test section construction. The research was undertaken by Purdue University’s Herrick Laboratories using their Tire Pavement Test Apparatus (TPTA). The TPTA is capable of testing any pavement texture that can be produced. This allows evaluation of texture designs that are not constrained by current construction capabilities or costs associated with construction and evaluation of field test sections. More importantly, the TPTA allows evaluation of textures without causing traffic control or safety issues. Purdue’s concrete pavement research was targeted on both new construction and pavement rehabilitation. Purdue’s preliminary efforts focused on evaluation of the variables affecting tire–pavement noise generation characteristics of diamond-ground surfaces. This paper reports on the development and findings of that work. The Purdue work evaluated the variables affecting construction of diamond-ground textures and the joint-slab effect associated with transverse joint noise generation. The findings of the Purdue work indicated that the geometric configuration of the blades and spacers used to construct diamond-ground textures was not the controlling factor in noise generation; rather the resulting fin profile was the most important factor. To produce a low-noise, diamond-ground surface required producing uniform and consistent fin profiles. To verify this finding, a new surface was produced that consisted of a uniform fin profile design with essentially only negative texture. This surface texture produced the lowest tire– pavement noise levels in the research. The surface was then constructed in the field using actual diamond-grinding equipment to confirm the laboratory based study. A new surface, now called the Next Generation Concrete Surface (NGCS), was essentially implemented and is being constructed in test sections to evaluate its long-term performance. NGCS is a term used to describe a category of textures that have evolved or will evolve through current research. The term may apply to several textures that evolve for both new construction and rehabilitation of existing surfaces. The desirable characteristics of such textures will be a very smooth profile coupled with good micro texture and excellent macro texture. To date, three field trials have been constructed and one competitively bid construction project. Friction testing and on-board sound intensity levels have been obtained at two of the sites and are reported herein.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos;
  • Pagination: pp 269-286
  • Monograph Title: Proceedings. National Conference on Preservation, Repair, and Rehabilitation of Concrete Pavements, St. Louis, Missouri, April 21-24, 2009

Subject/Index Terms

Filing Info

  • Accession Number: 01483907
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Jun 13 2013 9:51AM