and telephone number, name of supervisor, and detailed description of work
performed. All nozzlemen shall be certified in accordance with ACI 506.3R.
Qualifications of additional nozzlemen throughout the job shall be
similarly submitted for approval.
1.8
PRECONSTRUCTION TEST PANELS
Specimens of the preconstruction test panels shall be made by each
application crew using the equipment, materials, mixture proportions, and
procedures for each mixture being considered, and for each shooting
position to be encountered in the job. [The same reinforcement as in the
structure shall be provided in at least one-half of the panel to test for
proper embedment of reinforcing steel.] The test panels shall be
fabricated to the same thickness as the structure, but not less than 100 mm
4 inches. [At least five 75 mm 3-inch diameter cores from each panel shall
be taken for testing for compressive strength in accordance with ASTM C 1140
when nonfiber-reinforced shotcrete is used. The compressive strength of
the cores shall meet the requirements specified in paragraph COMPRESSIVE
STRENGTH.] [Three 100 by 100 by 350 mm 4 by 4 by 14 inch beams shall be
obtained in accordance with ASTM C 1140from the test panels when
fiber-reinforced shotcrete is used. The flexural strength [and toughness
index] of the fiber-reinforced shotcrete beams shall meet the requirements
specified in paragraph FLEXURAL STRENGTH [and TOUGHNESS INDEX].]
PART 2
PRODUCTS
2.1
MATERIALS
2.1.1
Cementitious Materials
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NOTE: See the appropriate DM to select the proper
requirements for the Cementitious Materials Options.
Other cementitious materials may be added if
specifically recommended and approved in the
concrete materials DM.
**************************************************************************
Cementitious materials shall be portland cement, blended hydraulic cement,
portland cement in combination with pozzolan or ground granulated
blast-furnace slag (GGBFS) [or [_____]], or [or portland cement in
combination with silica fume] and shall conform to appropriate
specifications listed below.
2.1.1.1
Portland Cement
Portland cement shall meet the requirements of ASTM C 150 Type [I], [II],
[III], [V] [low alkali] [with tricalcium aluminate limited to [5] [8]
percent if Type III is used].
2.1.1.2
Blended Hydraulic Cement
ASTM C 595 Type IS, IP[(MS)].
2.1.1.3
Pozzolan Other Than Silica Fume
Pozzolans shall conform to ASTM C 618, Class [C], [F], with the optional
requirements for [available alkalies from Table 1A] multiple factor, drying
shrinkage, and uniformity of Table 2A.
SECTION 03371
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