3.3
FIELD QUALITY CONTROL - SEAL COAT
3.3.1
Tests
Field tests shall be performed in sufficient numbers to assure that the
specifications are being met. Testing shall be the responsibility of the
Contractor and shall be performed by an approved commercial laboratory.
The following number of tests, if performed at the appropriate time, will
be the minimum acceptable for each type of operation.
3.3.1.1
Gradation
Gradation tests shall be performed in accordance with ASTM C 136. A
minimum of one gradation shall be performed for every [_____] [metric tons
tons] [cubic meters cubic yards] of aggregate to be placed, with a minimum
of three gradations for each day's run. When [the source of materials is
changed or] deficiencies are found, the gradation shall be repeated and the
material already placed shall be retested to determine the extent of the
unacceptable material. All in-place unacceptable material shall be
replaced at no additional expense to the Government.
3.3.1.2
Abrasion Resistance
Abrasion resistance tests shall be performed in accordance with ASTM C 131.
One test shall be performed for every [_____] [metric tons tons] [cubic
meters cubic yards] of aggregate placed.
3.3.1.3
Stripping
Perform stripping test on aggregate from each source, in accordance with
AASHTO T 182, prior to incorporation into the work and when the source is
changed.
3.3.2
Bituminous Material Sample
A sample of the bituminous material used will be obtained by the Contractor
under the supervision of the Contracting Officer. The sample will be
retained by the Government.
3.4
TRIAL APPLICATION - SEAL COAT
Prior to applying the seal coat, a test section at least 30 meters 100 feet
long by 6 meters 20 feet wide shall be placed by the Contractor using the
approved job materials. The materials shall be placed and rolled in
accordance with the specified requirements. Tests shall be made to
determine the application rates of the bitumen and aggregate. If the test
indicates that the seal coat test section does not conform to the
specification requirements, necessary adjustments to the application
equipment and to the spreading and rolling procedures shall be made, and
additional test sections shall be constructed for conformance to the
specifications. Where test sections do not conform to specification
requirements, seal coat shall be removed at no expense to the Government;
no separate payment will be made for seal coat materials and labor, either
in placement or removal of any test section. Quality control sampling and
testing during construction shall be performed as required in paragraph
FIELD QUALITY CONTROL above.
SECTION 02785
Page 18
Previous Page
