Pavement
- Publication no: AP-T180-11
- ISBN: 978-1-921709-79-1
- Published: 10 June 2011
- PDF (free) Download
Some recent problems with polymer modified binder (PMB) seals have been attributed to lack of initial adhesion of the binder to the sealing aggregate. This suggests that higher levels of cutter than those given in an Austroads Guide may be necessary. The Austroads Bituminous Surfacings Research Reference Group (BSRRG) decided that an investigation should be carried out to determine whether increased cutter proportions should be recommended.
The original intention was to carry out a laboratory study using the Vialit adhesion test. However, a review of a paper by Maccarrone et al. (1997), suggested that this might not be necessary. Instead, the data in the paper was reanalysed to provide a basis for possible changes to PMB cutting practice. The data included two types of testing: adhesion and Vialit. The Vialit results were contrary to field experience and not used by Maccarrone et al. in the preparation of a cutting chart, nor were they used in the current study.
- 1. INTRODUCTION
- 1.1. Aggregate Binder Adhesion
- 1.2. Binder Cutting Charts
- 1.3. This Study
- 2. REANALYSIS OF MACCARONE ET AL. PAPER
- 2.1. Overview
- 2.2. Approach Used in Current Study
- 2.3. Class 170 Bitumen
- 2.3.1. Maccarrone et al. Study
- 2.3.2. Work of Dickinson
- 2.3.3. Comparison with Bitumen Cutting Table
- 2.4. PMB Adhesion Viscosities
- 2.5. PMB Cutting Chart Based on Adhesion Viscosity
- 3. DISCUSSION
- 3.1. Adhesion Viscosity
- 3.2. The Need for Field Input
- 3.3. Vialit Plate Test
- 3.3.1. Australian Procedure
- 3.3.2. CEN Procedure
- 3.3.3. Comment
- 3.4. Future Work on Cutting Charts
- 3.4.1. Introduction
- 3.4.2. Vialit Testing
- 3.4.3. Adhesion Testing
- 4. CONCLUSIONS
- REFERENCES