• Book Name: Guide to Concrete Overlays Third Edition by Dale Harrington and Gary Fick
• Author: Dale Harrington and Gary Fick
• Pages: 163
• Size: 17 MB

Guide to Concrete Overlays by Dale Harrington PDF

Contents of Guide to Concrete Overlays by Dale Harrington PDF

1. Ch 1. Introduction
2. Ch 2. Evaluating Pavements and Selecting Solutions
3. Ch 3. Overview of Concrete Overlay Options
4. Ch 4. Concrete Overlay Design
5. Ch 5. Concrete Overlay Materials and Mixtures
6. Ch 6. Concrete Overlay Strategies in Work Zones
7. Ch 7. Construction of Concrete Overlays
8. Appendix A. Evaluation and Selection Tables
9. Appendix B. Reconstruction Options for Concrete
10. Appendix C. Fiber Reinforcement
11. Appendix D. Laser Scanning Survey
12. Appendix E. Factors for Constructing Concrete Overlays Under Traffic
13. Appendix F. Stringless Paving Operation
14. Appendix G. Considerations for Developing Project and Supplemental Specifications
15. Appendix H. Suggested Owner-Contractor Meetings to Ensure a Quality Product
16. Appendix I. Innovative Methods for Accelerated Concrete Overlay Construction

Preface of Guide to Concrete Overlays by Dale Harrington PDF

The need has never been greater for engineered strategies to preserve and maintain the nation’s pavements. With shrinking budgets, ever-increasing traffic volumes and loads, and the critical emerging focus on infrastructure sustainability and pavement preservation, highway agencies are being asked to do more with less in managing their pavement networks. Concrete overlays can serve as sustainable and cost-effective solutions for improved management of pavement assets, including preservation, resurfacing, and rehabilitation.

In addition, they contribute to more sustainable construction practices by preserving and extending pavement service for years beyond the original design life. Many concrete overlays have been in service for decades, effectively extending the life of the original pavement structures for 30 years or more. To ensure that concrete overlays provide durable, long-lasting maintenance and rehabilitation solutions, good design and construction practices must be followed. These include designing an overlay that is appropriate for the situation, accomplishing appropriate pre-overlay repairs and preparation of the existing pavement, and using good construction practices like proper jointing and curing. With thorough planning, work zones can be managed to accommodate these activities without sacrificing project safety, traffic flow, or cost effectiveness.

Despite a demonstrated history of hundreds of successful concrete overlay projects, some agencies and contractors have hesitated to design and construct them. One reason may be a lack of understanding of engineered concrete overlays. The primary goal of the Guide to Concrete Overlays series, therefore, is to fill the knowledge gap and answer pavement owners’ questions so that they can confidently include concrete overlays in their toolbox of pavement solutions and make more informed decisions about designing and constructing them.

The first (Harrington et al. 2007) and second (Harrington 2008) editions of this guide described concrete overlay types, applications, and issues related to design and construction. This third, expanded edition enhances the original material with updated information:

• Evaluating existing pavements to determine if they are good candidates for concrete overlays
• Selecting the appropriate overlay system for specific pavement conditions
• Managing concrete overlay construction work zones under traffic
• Accelerating construction of concrete overlays when appropriate Like the first and second editions, however, this guide is not a complete step-by-step manual, nor does it provide prescriptive formulae or specifications for designing and constructing concrete resurfacing projects. As the title suggests, this booklet provides expert guidance that can supplement practitioners’ own professional experience and judgment.

Another goal of this guide is to help owner agencies understand and appreciate the versatility of concrete overlay solutions. A common misconception is that concrete overlays are limited to projects that require long-term solutions (20 to 35 years) and that other options may be better suited for short-term solutions (5 to 15 years). Another is that overlays are expensive or difficult to build, or are niche solutions with limited applicability. In actuality, however, the following statements are true:

• Concrete overlays can be designed to cost effectively accommodate all combinations of design life and traffic loading. Their thickness can vary from 2 to 10 inches or greater, depending on the existing pavement condition, anticipated traffic, available funding, and desired design life.
• Concrete overlay solutions exist for all pavement types (concrete, asphalt, and composite [asphalt surfacing over concrete]).
• Concrete overlay solutions exist for all pavement conditions. Because concrete distributes traffic loads over a wide area, the underlying pavement does not experience highly concentrated stresses. As a result, as long as the original pavement remains stable and uniform, a concrete overlay can be placed.

Guide to concrete overlays by dale harrington pdf.