1.1 ,This specification covers asphalt binders graded by viscosity at 60 ,°,C [140 ,°,F] for use in pavement construction. Four sets of limits are offered in this specification. The purchaser shall specify the applicable table of limits. In the event the purchaser does not specify limits, Table 1 shall apply. For asphalt binders graded by penetration at 25 ,°,C [77 ,°,F], see Specification D946/D946M. If needed, volume corrections for asphalt binders should be made according to Practice D4311/D4311M.