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Pavement Overlays - 3 PDH

Normally, overlays of existing pavements are used to increase the load-carrying capacity of an existing pavement or to correct a defective surface condition on the existing pavement. Of these reasons, the first requires a structural design procedure for determining the thickness of overlay; whereas the second requires only a thickness of overlay sufficient to correct the surface condition, and no increase in load-carrying capacity is considered. The design method for overlays included in this chapter determines the thickness required to increase load-carrying capacity. These methods have been developed from a series of full-scale accelerated traffic tests on various types of overlays and are, therefore, empirical. These methods determine the required thickness of overlay that, when placed on the existing pavement, will be equivalent in performance to the required design thickness of a new pavement placed on subgrade.

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Manufacturer: Guyer

Course Outline

1. General

2. Definitions and Symbols for Overlay Pavement Design

3. Preparation of Existing Pavement

4. Condition of Existing Rigid Pavement

5. Rigid Overlay of Existing Rigid Pavement

Learning Objectives

Upon completion of this course you will:

  • Learn the measures necessary to prepare existing pavement for overlay;

  • Learn the three conditions of bond when overlaying a rigid pavement with a rigid overlay;

  • Learn the condition rating factors (ā€œCā€) for existing pavements to be overlaid;

  • Learn how to calculate the thickness of rigid overlays for rigid pavements;

  • Learn how to design a rigid overlay of an existing flexible pavement;

  • Learn how to design overlays for composite pavements;

  • Learn how to apply overlays to flexible pavements.

Intended Audience

This course is intended for civil engineers and other design and construction professionals wanting to learn how to design and apply flexible and rigid overlays to existing flexible, composite and rigid pavements.

Benefit for Attendee

This course will give civil engineers and other design and construction professionals an introduction to the types and application of pavement overlays for streets, roads, parking and open storage areas.

Course Introduction

This course provides introductory information about selection, application and design of plain and reinforced portland cement concrete and asphalt concrete pavement overlays.

Course Summary

This course will give you professional tools that will help you to understand the technical and design issues in application of flexible and rigid pavement overlays.


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