THERMOPLASTIC ROAD MARKING MATERIAL: LABORATORY STUDIES AND PRELIMINARY METHOD DESCRIPTIONS (TERMOPLASTISK VAEGMARKERINGSMASSA: LABORATORIEUNDERSOEKNINGAR OCH PRELIMINAERA METODBESKRIVNINGAR)
Preliminary methods for the analysis of thermoplastic road material are described. The analysis of binding agent is based on combustion, which is preferred to extraction, because it is simple, there is no need for organic solvents and the equipment is cheap, except for the oven. The titanium oxide analysis is based on absorption spectrophotometry. The method is sufficiently precise, but time consuming and involves unpleasant chemicals as well as expensive equipment. The method using a Troger apparatus for the determination of wear characteristics is not yet satisfactory. The determination of glass beads is based on the difference in density of the glass beads as compared to the remainder of the material. The methods can be used only for glass beads >0.074 mm and the procedure is time consuming. Grain size distribution is determined through serial sieving. The finest sieve mesh is 0.074mm. IR spectrum analysis is done for a qualitative analysis of the binding agent in order to obtain a 'finger print'. The 'finger print' is compared with a standard spectrum. Penetration tests are based on a German procedure.
- Text in Swedish. Also pub. as ISSN-0347-6049.
- ISACSSON, U
- COLLDIN, Y
- Publication Date: 1980
- Pagination: 129 p.
- Accession Number: 00346045
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: VTI/MEDDELANDE-210
- Files: NTIS
- Created Date: Jan 29 1982 12:00AM