3.5
TEST SECTION
Prior to full production, the Contractor shall place a test section for
each JMF used. The contractor shall construct a test section 75 - 150 m
250 - 500 feet long and two paver passes wide placed in two lanes, with a
longitudinal cold joint. The test section shall be of the same depth as
the course which it represents. The underlying grade or pavement structure
upon which the test section is to be constructed shall be the same as the
remainder of the course represented by the test section. The equipment
used in construction of the test section shall be the same equipment to be
used on the remainder of the course represented by the test section. The
test section shall be placed as part of the project pavement as approved by
the Contracting OfficerEngineer.
3.5.1
Sampling and Testing for Test Section
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NOTE: Table 5 applies only to the test section.
The limits in Tables 6, 7, and 8, apply to a number
of tests run from a lot. This is why the limits
listed in Table 5 are different from those listed in
Tables 6, 7, and 8.
Select the appropriate VMA requirement to match the
selected gradation. Select the appropriate
stability and flow value to match the laboratory
compactive effort (50 or 75 blows).
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One random sample shall be taken at the plant, triplicate specimens
compacted, and tested for stability, flow, and laboratory air voids. A
portion of the same sample shall be tested for theoretical maximum density
(TMD), aggregate gradation and asphalt content. Four randomly selected
cores shall be taken from the finished pavement mat, and four from the
longitudinal joint, and tested for density. Random sampling shall be in
accordance with procedures contained in ASTM D 3665. The test results
shall be within the tolerances shown in Table 5 for work to continue. If
all test results meet the specified requirements, the test section shall
remain as part of the project pavement. If test results exceed the
tolerances shown, the test section shall be removed and replaced at no cost
to the GovernmentOwner and another test section shall be constructed.
Table 5.
Test Section Requirements for Material and Mixture Properties
Property
Specification Limit
Aggregate Gradation-Percent Passing (Individual Test Result)
4.75 mm and larger
JMF plus or minus 8
2.36, 1.18, 0.60, and 0.30 mm
JMF plus or minus 6
0.15 and 0.075 mm
JMF plus or minus 2.0
Asphalt Content, Percent
JMF plus or minus 0.5
(Individual Test Result)
Laboratory Air Voids, Percent
SECTION 02749
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