THE PENETRATION INDEX OF THE BITUMINOUS BINDERS USED IN ARGENTINA

SOBRE EL INDICE DE PENETRACION DE LOS CEMENTOS ASFALTICOS ARGENTINOS

The penetration test (25 degrees c, 100 g, 5 s) has been used generally as the empirical method of measuring the consistency of bituminous binders and as a basis for distinguishing between various commercial types. There is however a tendency in certain centres to substitute viscosity measurements as, for example, in the usa asphalt institute. A study is made of the penetration index as comparative measurement of thermal sensitivity, by comparing the values obtained during two standardised tests: penetration and softening point (ring and ball) tests. The conclusions reached are as follows: it is necessary to determine penetration indices for two penetrations at different temperatures; in the bitumens studied, the penetration index can be accepted as measurement of consistency for moderate temperatures (20-40 degrees c) but it is not representative at mixing, spreading and compaction temperatures for mixtures of the asphaltic concrete type. /TRRL/

• Corporate Authors:

  Direccion de Vialidad de Provincia de Buenos Aires

  Calle 7 No. 1175
  La Plata,   Argentina 
• Authors:
  • Ruiz, C L
• Publication Date: 1971-10

Language

• Spanish

Media Info

• Features: Figures; Tables;
• Pagination: p. 9-13
• Serial:
  • Vialidad
  • Issue Number: 60

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Binders; Bituminous materials; Bituminous mixtures; Consistency; Dynamic penetration test; Heat; Pendulum tests; Sensitivity; Softening point; Soil penetration test; Temperature; Viscosity; Workability
• Uncontrolled Terms: Ring and ball test
• Old TRIS Terms: Softening point test
• ITRD Terms: 4948: Binder; 6136: Measurement; 6285: Penetration; 5928: Sensitivity; 6722: Temperature; 5941: Workability
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00125248
• Record Type: Publication
• Source Agency: Transportation & Soil Mechanics Laboratory, Spain
• Files: ITRD, TRIS
• Created Date: Dec 3 1975 12:00AM