degrees F. This shall be determined by observation of ambient and concrete
temperatures indicated by suitable temperatures measuring devices furnished
by the Government as required and installed adjacent to the concrete
surface and 50 mm 2 inches inside the surface of the concrete. The
installation of the thermometers shall be made by the Contractor at such
locations as may be directed.
3.5.6
Appearance
Permanently exposed surfaces shall be cleaned, if stained or otherwise
discolored, by a method that does not harm the concrete and that is
approved.
3.6
TESTING AND QUALITY VERIFICATION FOR CONTRACTOR QUALITY CONTROL
With the testing and quality verification for contractor quality control
the Contractor shall conform to the following requirements.
3.6.1
General
**************************************************************************
NOTE: The title of the certification provided by
ACI that concrete inspectors/technicians have to
have to perform concrete testing was changed from
"Concrete Transportation Construction Inspector" to
"Concrete Construction Inspector" in 2004. Since
the certification is good for 5 years, both titles
will be kept in the specifications through 2006;
pick the correct bracketed statement for projects
prior to 2004.
**************************************************************************
The Contractor shall perform the inspection and tests described below, and
based upon the results of these inspections and tests, he shall take the
action required and submit reports as required. When, in the opinion of
the Contracting Officer, the preplaced-aggregate concreting operations are
out of control, aggregate and intrusion grouting shall cease. The
laboratory performing the tests shall be onsite and shall conform with ASTM
C 1077. The individuals who sample and test concrete or the constituents
of concrete as required in this specification shall have demonstrated a
knowledge and ability to perform the necessary test procedures equivalent
to the ACI minimum guidelines for certification of Concrete Field Testing
Technicians, Grade I. The individuals who perform the inspection of
concrete construction shall have demonstrated a knowledge and ability
equivalent to the ACI minimum guidelines for certification of [Concrete
Transportation Construction Inspector (CTCI)] [Concrete Construction
Inspector (CCI)], Level II. The Government will inspect the laboratory,
equipment, and test procedures prior to start of concreting operations and
at least once per year thereafter for conformance with ASTM C 1077.
3.6.2
Testing and Inspection Requirements
3.6.2.1
Fine Aggregate
a. Grading - At least once during each shift when the grout plant is
operating, there shall be one sieve analysis and fineness modulus
determination in accordance with ASTM C 136 and COE CRD-C 104 for the
fine aggregate. The grading shall conform to requirements in paragraph
FINE-AGGREGATE GRADING. The location at which samples are taken may be
SECTION 03372
Page 30
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