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The U.S. Government assumes no liability for the use of the information contained in this document.  \nThe U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers’names appear in this material only because they are considered essential to the objective of the document. They are included for informational purposes only and are not intended to reflect a preference, approval, or endorsement of any one product or entity.  \nNonbinding Contents  \nThe contents ofthis document do not have the force and effect of law and are not meant to bind the public in any way. This document is intended only to provide clarity to the public regarding existing requirements under the law or agency policies. However, compliance with applicable statutes or regulations cited in this document is required.  \nQuality Assurance Statement  \nThe Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.  \nIowa State University  \nNondiscrimination Statement  \nIowa State University does not discriminate on the basis of race, color, age, ethnicity, religion, national origin, pregnancy, sexual orientation, gender identity, genetic information, sex, marital status, disability, or status asa US veteran. Inquiries regarding nondiscrimination policies may be directed to the Office of Equal Opportunity, 3410 Beardshear Hall, 515 Morrill Road, Ames, Iowa 50011, telephone: 515-294-7612, hotline: 515-294-1222, [email: ](email: eooffice@iastate.edu)[eooffice@iastate.edu](email: eooffice@iastate.edu).  \nAbout This Guide  \nThe Guide to Concrete Overlays is a product of the National Concrete Pavement Technology Center (CP Tech Center) at Iowa State University, with funding from the Federal Highway Administration (FHWA) . This guide presents the basic principles needed to design and construct concrete overlays on existing asphalt, composite, and concrete pavements. It is the fourth edition of the Guide to Concrete Overlays since 2007. Complementary publications developed by the CP Tech Center include Guide Specifications for Concrete Overlays (2016), Guide for the Development of Concrete Overlay Construction Documents (2018), Concrete Pavement Preservation Guide (new edition forthcoming), and History of Concrete Overlays in the United States (new edition forthcoming) . These and other publications related to concrete overlays are available on the CP Tech Center’s website, [https://cptechcenter.org/](https://cptechcenter.org/) .  \nReference Information for this Guide  \nFick, G., J. Gross, M. B. Snyder, D. Harrington, J. Roesler, and T. Cackler. 2021. Guide to Concrete Overlays. 4th Edition. National Concrete Pavement Technology Center, Iowa State University, Ames, IA.  \nFor More Information  \nNational Concrete Pavement Technology Center Iowa State University Research Park  \n2711 S. Loop Drive, Suite 4700  \nAmes, IA 50010-8664  \n515-294-5798  \n[https://cptechcenter.org/](https://cptechcenter.org/)  \nCover Image Credits  \nTodd LaTorella, ACPA, MO/KS Chapter, used with permission  \nTechni","cbCaijm1qwKj18Lk","https://ap.wps.com/l/cbCaijm1qwKj18Lk","pdf",46051737,156,"English","# About the CP Tech Center\n## Notice\n## Nonbinding Contents\n## Quality Assurance Statement\n## Iowa State University\n## Nondiscrimination Statement\n# About This Guide\n## Reference Information for this Guide\n## For More Information\n## Cover Image Credits\n## Technical Report Documentation Page","[{\"question\":\"What is the purpose of the Guide to Concrete Overlays?\",\"answer\":\"The guide provides the basic principles needed to design and construct concrete overlays on existing asphalt, composite, and concrete pavements.\"},{\"question\":\"Who is the guide intended to help?\",\"answer\":\"It aims to improve experienced engineers’ proficiency, give less experienced users essential knowledge, and support all users in understanding the versatility of concrete overlays.\"},{\"question\":\"What types of roadways does the guide address?\",\"answer\":\"It discusses concrete overlays for low-volume roads, city streets, primary roadways, and Interstate highways.\"}]","Guide to Concrete Overlays - Fourth Edition | PDF",393]