Test Methods and Specifications
Rubber Content of Crumb Rubber Modified Bitumen: Soxhlet Method
- Publication no: AGPT-T142-20
- Published: 5 May 2020
- Edition: 4.0
- PDF (free) Download
This test method sets out the procedure for determining the rubber content of a crumb rubber modified binder using a Soxhlet extraction apparatus.
This test method is applicable to crumb rubber modified binders used in constructing and maintaining pavements (as specified in ATS 3110).
This test method can also be downloaded as a Word document.
Edition 4.0 published May 2020
- Method completely revised so that it was based on RMS method ‘T737 Rubber content of a scrap rubber mix’ which uses a Soxhlet extraction apparatus and toluene solvent to determine the rubber content of a binder.
- Procedure added to determine the rubber recovery factor using a crumb rubber binder sample which contained a known concentration of crumb rubber.
- Safety Disclaimer added.
- Appendix A removed.
Edition 3.0 published March 2006
Edition 2.0 published October 2004
Edition 1.0 published January 2002
- 1. References
- 2. Solvent
- 3. Equipment
- 4. Procedure
- 4.1 Sample Preparation
- 4.2 Preparation of the Extraction Thimble and Addition of Sample
- 4.3 Soxhlet Extraction
- 4.4 Determination of the Rubber Recovery Factor (if required)
- 4.4.1 Determination of the Rubber Recovery Factor Using a Sample of Neat Crumb Rubber
- 4.4.2 Determination of the Rubber Recovery Factor Using a Binder Sample with a Known Concentration of Crumb Rubber
- 4.5 Calculation of Rubber Content in the Binder
- 5. Reporting
- 6. Precision
Related publications
ATS-3110-26
Latest Test Methods and Specifications News