fine aggregate taken under the supervision of the Contracting Officer in
accordance with COE CRD-C 100 shall be delivered to [_____] within 15 days
after notice to proceed. Sampling and shipment of samples shall be at the
Contractor's expense. [_____] days will be required to complete evaluation
of the aggregates. Testing will be 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 Design
Memorandum 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.
1.4.1.2
Cementitious Materials, Admixtures, and Curing Compound
**************************************************************************
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."
**************************************************************************
At least 60 days in advance of concrete placement, the Contractor shall
notify the Contracting Officer of the sources for cementitious materials,
admixtures, and curing compound, along with sampling location, brand name,
type, and quantity to be used in the manufacture and/or curing of the
concrete.
1.4.2
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.]
1.4.2.1
Chemical Admixtures Storage
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 paragraph CHEMICAL ADMIXTURES.
1.4.2.2
Cement and Pozzolan
**************************************************************************
NOTE: Delete this paragraph if materials are to be
accepted on the basis of a manufacture's
certification of compliance and mill test reports,
SECTION 03301A
Page 15
Previous Page
