the applicable COE CRD-C or ASTM test methods. Tests to which aggregate
may be subjected are listed in paragraph MATERIAL SPECIFICATION. The
material from the proposed source shall meet the quality requirements of
this paragraph to be used for the project. The Government test data and
other information on aggregate quality of those sources listed in paragraph
MATERIAL SPECIFICATION, and are available for review in the District
Office. Quality assurance testing of aggregates by the Government does not
relieve the Contractor of quality control requirements.
1.3.1.2
Cementitious Materials, Admixtures, and Curing Materials
Notify the Contracting Officer of the source, brand name, type, and
quantity of all materials (other than aggregates) to be used in the
manufacture and curing of the concrete at least 60 days in advance of
submitting samples for mixture proportioning studies. The Contractor shall
assist the Contracting Officer in obtaining samples of each material.
Sampling and testing as determined appropriate will be performed by and at
the expense of the Government. If cement or pozzolan are to be obtained
from more than one source, the notification shall state the estimated
amount of cement or pozzolan to be obtained from each source and the
proposed schedule of shipments. When pozzolan other than fly ash is used,
it shall be from one source.
1.3.1.3
Materials for Mixture-Proportioning Studies
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NOTE: Contact the Engineer Research and Development
Center, 3909 Halls Ferry Road, Vicksburg,
Mississippi 39180-6199, ATTN: CEERD-SC to fill in
the blanks. At the end of the following table,
insert other cementitious materials, including
silica fume, as appropriate.
**************************************************************************
At least [_____] days in advance of the time when placing of concrete is
expected to begin, samples of representative materials proposed for this
project and meeting all the requirements of this specification shall be
delivered to [_____] by the Contractor at his expense. Samples of
aggregates shall be taken under the supervision of the Contracting Officer
in accordance with COE CRD-C 100, accompanied by test reports indicating
conformance with grading and quality requirements hereinafter specified.
Samples of materials other than aggregates shall be representative of those
proposed for the project and shall be submitted accompanied by
manufacturer's test reports indicating compliance with applicable specified
requirements. Quantities of materials required shall be as follows:
MATERIAL
QUANTITY
[150 mm nominal maximum-size coarse aggregate
[_____] kg]
[75 mm nominal maximum-size coarse aggregate
[_____] kg]
37.5 mm nominal maximum-size coarse aggregate
[_____] kg
19 mm nominal maximum-size coarse aggregate
[_____] kg
Fine aggregate
[_____] kg
Cement
[_____] kg
SECTION 03700
Page 14
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