448.01 Description. This
work consists of constructing a surface course or an intermediate course of
aggregate and asphalt binder mixed in a central plant and spread and compacted
on a prepared surface. The Department
will determine acceptance of the mixture by
The requirements of Item 441 apply, except as modified by this specification.
448.02 JMF Field Adjustments. Determine the need for any JMF gradation adjustments, provided for in 441.05, from the results of quality control and Department verification tests of the first two acceptance lots. Following adjustment, the Department will apply the adjusted JMF, for acceptance purposes, to the entire production including the first two lots. Give the DET written notice of JMF adjustments no later than the end of the first workday following the notification of verification test results of the second acceptance lot.
For projects with less than two acceptance lots or for any JMF that will no longer be used on a project, give the DET written notice of any JMF gradation adjustments within 1 workday following the notification of acceptance test results.
448.03 Density. Conduct density gauge quality control (QC) testing on the asphalt mat according to Supplement 1055 (S 1055). Conduct density gauge testing on uniform surface courses of 0.75 inch (19mm) or more and uniform intermediate courses of 1.0 in (25mm) or more plan thickness. Conduct density gauge testing on projects of 2 adjacent lanes or more and with at least one continuous mile (1.6 kilometers) of paving (excepting bridges, intersections etc.).
When S 1055 density gauge testing is required, the Department will not require 401.16 except for the last 4 paragraphs and the requirement that equipment meet 401.13. The Department will also not require the use of the three-wheel roller requirement in 401.17 when S 1055 density gauge testing is required.
Item unit Description
448 Cubic Yard Asphalt Concrete
(Cubic Meter) Intermediate Course, Type ___
448 Cubic Yard Asphalt Concrete Surface
(Cubic Meter) Course, Type ___