Division 400 — Division 400
Division 400 — Bituminous Pavements
SECTION 401 - ASPHALT PAVEMENT -- GENERAL
401.01 Description . These specifications include general requirements that are
applicable to all types of asphalt whether producing Hot Mix Asphalt (HMA) mixtures or Warm Mix Asphalt (WMA) mixtures. These specifications also include the specific requirements for each particular mixture when deviations from the general requirements are necessary. This work consists of the construction of one or more lifts of asphalt pavement in accordance with these specifications and the sp ecific requirements for the mixture to be produced and in reasonably close conformity with the lines, grades, thicknesses and typical sections shown on the plans or established by the Engineer.
401.01.1 Definitions.
Maximum Sieve Size - Maximum sieve size is the sm allest sieve size at which 100 percent of the aggregate passes. Nominal Maximum Sieve Size - The nominal maximum sieve size is one sieve size larger than the first sieve to retain more than 10 percent of the aggregate. Maximum Density Line - The maximum density line is a straight line plot on the FHWA 0.45 power gradation chart that extends from the zero origin point of the chart through the plotted point of the combined aggregate gradation cu rve on the nominal maximum sieve size. Mechanically Fractured Face - An angular, rough, or broken surface of an aggregate particle created by crushing as determined by ASTM D 5821.
401.02 Materials .
401.02.1 Component Materials .
401.02.1 1--General . Component materials will be conditionally accepted at the plant
subject to later rejection if incorporated in a mixture or in work that fails to meet contract requirements.
401.02.1 2--Aggregates . The source of aggregates shall meet the applicable
requirements of Section 703.
401.02.1 2.1--Coarse Aggregate Blend. Mechanically fractured faces by weight of the
combined mineral aggregate coarser than the No. 4 sieve: Mixture Percent Fractured Faces, minimum 25-mm 70, one-face 19-mm * 80, one-face 12.5-mm 90, two-face 9.5-mm 90, two-face 4.75-mm 90, two-face