Work Item
ASTM WK23038
Revision of D3381-05 Standard Specification for Viscosity-Graded Asphalt Cement for Use in Pavement Construction
Rationale
Various regions in the world that use ASTM D3381 Standard Specification for Viscosity Graded Cement have difficulty meeting Table 2 specifications. For example asphalts manufactured with South American crudes tend to have difficulty meeting the TFO (Thin Film Oven) aged ductility minimum requirement. These types of asphalts are better suited to meet AC-30 Table 1 specifications from the perspective of production capability and pavement quality. The addition of the type viscosity grade AC-30 would fill in an obvious gap in Table 1 without changing its intent. Data supporting the need for AC-30 in the Table 1 specification are summarized in the Table below and graphically represented in Figure 1. TFO residue ductility versus viscosity at 60C data from various South American crude sources were chosen to represent this need as ductility appears to be the most significant limiting parameter with respect to ASTM D 3381 Table 2.
Work Item Status
Date Initiated: 02-16-2009
Technical Contact: Robert Kluttz
Item: 028
Ballot: D04 (09-01)
Status: Ballot Item Approved
Item: 006
Ballot: D04.40 (09-01)
Status: Item Going To Next Ballot Level