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6 durability, smoothness, constructability, pavement service- located and installed on a new stretch of the I-355 North-South ability, and cost-effectiveness. In addition, there are other Tollway near Joliet, Illinois, included nine different "formed" options for texturing concrete pavements that might provide textures (tining or drag finishes created in fresh concrete) and better performance and yield environmental and economic three different "cut" textures (ground or grooved finishes cre- benefits. ated in hardened concrete), all of which were tested for texture, There are no widely accepted guidelines or procedures friction, and noise shortly after construction. for identifying and selecting methods of texturing concrete The results of data analyses on both the in-place and new pavements that consider relevant technical, environmental, texture test sections together with the state of the practice infor- economic, and safety issues. Research was needed to develop mation were used to develop a process (and related guidance) a rational procedure for use by highway agency personnel in for selecting textures for a range of applications and for prepar- identifying and selecting appropriate texturing methods for ing sample specifications for texturing concrete pavements. concrete pavements. NCHRP Project 10-67 was initiated to address this need. Overview of Report This report has seven chapters. Chapter 1 is this introduc- Project Objectives and Scope tion. Chapter 2 briefly describes the state of the practice of con- The objective of this research was to recommend appropri- crete pavement surface texturing based on a review of literature ate methods for texturing concrete pavements for specific and interviews with knowledgeable individuals. Chapter 3 applications and ranges of climatic, site, and traffic condi- describes the selection of 57 pavement sections located in tions. These methods were to include tining and other means 13 states and the conduct of texture, friction, and noise tests. of texturing fresh and hardened concrete for the purpose of Chapter 4 discusses the development and execution of a plan enhancing surface frictional characteristics. to build and test different surface textures (most of them iden- tified as having good friction and noise qualities) as part of a The research included a review of relevant literature, con- paving project in northern Illinois. ducting surveys and interviews of state and industry profes- Chapter 5 presents the results of analyses performed on sionals, identifying and assessing the factors that influence texture, friction, noise and other pavement data collected texture level, and identifying test methods and criteria for on both existing and newly constructed test sections. The assessing surface texturing. The research also included a field results together with the state-of-the-practice information evaluation of in-place test sections and specially constructed were used to develop the texture selection process presented full-scale test sections. Based on the analysis of acquired data, in Chapter 6. The final chapter summarizes the key findings a process for texture selection and sample construction spec- of this research and presents the study's conclusions and ifications were prepared. recommendations. The report includes six appendices. Appendix A describes Work Approach the state of the practice in concrete pavement texturing. Appendix B summarizes the interviews conducted with high- In this study, a large amount of information was collected, way agency, industry, and academia representatives. Appen- reviewed, and analyzed to establish the state of the practice in dix C gives detailed information on the locations, layout, and concrete pavement texturing and to identify promising and/or history of the 57 existing test sections. Appendixes D and E innovative texturing methods. A large field investigation provide summary charts of the texture, friction, and noise test- involving texture, friction, and noise testing of 57 in-place ing results obtained for existing and newly constructed texture pavement surfaces was conducted. test sections, respectively. Appendix F presents guide/sample Results from this investigation were used to identify con- specifications for some of the PCC textures evaluated in this crete surface textures for a more detailed evaluation through study. Appendixes A through F are not published herein, but the construction of a formal texture test site. This test site, are available on the TRB website.