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Course Description

This course is both a refresher and more expansive insight into sprayed sealing principles and application that will benefit project managers, contract managers, asset managers and technical specialists in State Road Authorities and Local Councils. It will also benefit technical and operational staff who work for road construction contractors.

Unit 1: Fundamentals of Sprayed Sealing provides an overview of what sprayed seals are and why they make up the majority of the Australian sealed road network. The types of sprayed seals and their component materials are discussed, alongside methods to assure appropriate selection of sprayed seal treatments for the variety of purposes they may can be applied to. An overview of the design procedure and construction methods are also described.

Unit 2: Intermediate Selection and Design of Sprayed Seals includes a more in-depth focus on the seal design process and worked examples of these. Participants will gain a basic competency in designing single / single and double / double treatments.

Learning outcomes

Unit 1 - Fundamentals of Sprayed Sealing

LO1 - High-level understanding of the purpose of Sprayed Seal
LO2 - High-level understanding of types of Sprayed Seal
LO3 - High-level understanding of Sprayed Seal Materials
LO4 - High-level understanding of application processes

Unit 2 - Intermediate: Selection and Design of Sprayed Seals

LO1 - High-level understanding of sprayed sealing treatments and selection
LO2 - Detailed-level understanding of single / single seal designs
LO3 - Detailed-level understanding of double / double seal designs
LO4 - Detailed-level understanding of initial seals
LO5 - Detailed-level understanding of SAMI seals

Topics Covered

Unit 1 - Fundamentals of Sprayed Sealing‍

Fundamentals of sprayed seals
- The purpose of sprayed seals
- Types of sprayed seals
Materials
- Materials used in sprayed seals
- How materials are specified
- Purpose and function of the materials
Design and selection
- The goals of sprayed seal design
- How to design a sprayed seal
- How to select a sprayed seal
Pavement preparation
- Pavement requirements for sprayed sealing
- Achieving an appropriate surface finish
Construction
- Major steps in constructing sprayed seals
- Required equipment
Troubleshooting
- Distress types for sprayed seals
- Cause of problems in sprayed seals

Unit 2 - Selection and Design of Sprayed Seals

Sprayed Sealing Treatments & Selection
- Purpose and Effectiveness of Sprayed Seals
- Types of Seal Treatments
Single / Single Seal Design Methodology
- Methodology Principles
- Methodology Overview
- Design Traffic and EHVs
- Single / Single Seal Design Example
Double / Double Seal Design & Methodology
- Methodology Principles
- Methodology Overview
- Double / Double Seal Design Example