performed by and at the expense of the Government in accordance with the
applicable COE CRD-C or ASTM test methods. The cost of testing one source
for each size of aggregate will be borne by the Government. If the
Contractor selects more than one source for each aggregate size or selects
a substitute source for any size aggregate after the original source was
tested, the cost of that additional testing will be borne by the
Contractor. Tests to which aggregate may be subjected are listed in
paragraph QUALITY. The material from the proposed source shall meet the
quality requirements of this paragraph. The Government's test data and
other information on aggregate quality of those sources listed at the end
of this section are included in the DM and are available for review in the
district office. Testing of aggregates by the Government does not relieve
the Contractor of the requirements outlined in paragraph TESTS AND
INSPECTIONS.
1.5.1.2
Cementitious Materials and Admixtures
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NOTE: When the optional sentence below is deleted,
the corresponding manufacturer's certification
described in paragraph SUBMITTALS should be used.
EM 1110-2-2000, "Standard Practice for Concrete",
provides guidance in selecting the options for
Government or for Contractor testing.
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At least 60 days in advance of concrete placement, the Contractor shall
notify the Contracting Officer of the source of materials, along with
sampling location, brand name, type, and quantity to be used in the
manufacture and/or curing of the concrete.
1.5.2
Construction Testing by the Government
[Sampling and testing will be performed by and at the expense of the
Government except as otherwise specified. No material shall be used until
notice has been given by the Contracting Officer that test results are
satisfactory.] [The Government will sample and test chemical admixtures,
curing compounds, and cementitious materials].
1.5.2.1
Chemical Admixtures
Chemical admixtures that have been in storage at the project site for
longer than 6 months or that have been subjected to freezing shall be
retested at the expense of the Contractor when directed by the Contracting
Officer and shall be rejected if test results are not satisfactory.
Chemical admixtures will be accepted based on compliance with the
requirements of PART 2, paragraph CHEMICAL ADMIXTURES.
1.5.2.2
Cement and Pozzolan
**************************************************************************
NOTES: Delete this paragraph if materials are to be
accepted on the basis of a manufacture's
certification of compliance and mill test reports,
and the optional sentence in paragraph SUBMITTALS,
SD-07 Certificates, will be used. See the
appropriate DM or consult the Materials Engineer to
select prequalified sources, subparagraphs "a" and
"b" below, or sealed bins, subparagraphs "c" and "d"
SECTION 03373
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