laboratory.
4. Laboratory Inspection: The Government will inspect the laboratory
equipment and test procedures prior to the start of concreting
operations for conformance to ASTM C 1077. The laboratory shall
maintain this certifications for the duration of the project.
1.10
TEST SECTION
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NOTE: Retain this paragraph if slipforming of
pavements more than 250 mm (10 inches) thick is
permitted. Where desired for other pavements,
retain it; otherwise, delete. Contact the Navy EFD
regarding use of a test section on Navy projects.
Edit bracketed items as appropriate. Use bracketed
item requiring cutting of cores and beams only for
special concerns.
**************************************************************************
At least 10 days but not more than 60 days prior to construction of the
concrete pavement, a test section shall be constructed [near the job site]
[,but not as part of the production pavement area,] [as part of the
production paving area at an outer edge as indicated on the drawings]. The
Contractor shall use the test section to develop and demonstrate to the
satisfaction of the Contracting Officer the proposed techniques of mixing,
hauling, placing, consolidating, finishing, curing, initial saw cutting,
start-up procedures, testing methods, plant operations, and the preparation
of the construction joints. The test section shall consist of one paving
lane at least 130 m 400 feet long and shall be constructed to the same
thickness as the thickest portion of pavement shown on the Drawings. The
lane width shall be the same as that required for use in the project. The
test section shall contain at least one transverse construction joint. If
[keyed or ]doweled longitudinal construction joints are required in any of
the production pavements, they shall be installed full length along one
side of the test strip throughout the test section. [If both keys and
dowels are required, each shall be installed in half of the test section.]
Two separate days shall be used for construction of the test section.
Variations in mixture proportions other than water shall be made if
directed. The Contractor shall vary the water content, as necessary, to
arrive at the appropriate content. The mixing plant shall be operated and
calibrated prior to start of placing the test section. The Contractor
shall use the same equipment, materials, and construction techniques on the
test section as will be used in all subsequent work. Base course
preparation, concrete production, placing, consolidating, curing,
construction of joints, and all testing shall be in accordance with
applicable provisions of this specification. Three days after completion
of the test section, the Contractor shall provide eight cores at least 150
mm 6 inch diameter by full depth cut from points selected in the test
section by the Government. The cores will be evaluated for homogeneity,
consolidation and segregation. The Contractor shall construct the test
section meeting all specification requirements and being acceptable to the
Contracting Officer in all aspects, including surface texture. Failure to
construct an acceptable test section will necessitate construction of
additional test sections at no additional cost to the Government. Test
sections allowed to be constructed as part of the production paving which
do not meet specification requirements shall be removed at the Contractor's
expense. If the Contractor proposes to use slipform paving and is unable
to construct an acceptable test section, or if the slipform paving
SECTION 02753
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