2.2.2
Coarse Aggregate
Coarse aggregate shall conform to ASTM C 33, Class 5S, size designation
[_____].
2.2.3
Lightweight Aggregate
Lightweight fine and coarse aggregate shall conform to the quality and
gradation requirements of ASTM C 330, size [_____] for coarse aggregate.
Lightweight aggregate shall be prewetted in accordance with the
Manufacturer's instructions unless otherwise specified. For pumped
concrete, prewetting shall be sufficient to ensure that slump loss through
the pump line does not exceed 100 mm 4 inches.
2.2.4
Materials for Bonded Topping for Heavy Duty Floors
In addition to the requirements specified above, coarse aggregate used for
this purpose shall be a well graded, hard, sound diabase, trap rock, emery,
granite or other natural or manufactured aggregate having equivalent
hardness and wearing qualities and shall have a percentage of loss not to
exceed 30 after 500 revolutions when tested in accordance with ASTM C 131.
Gradation of the aggregates when tested in accordance with ASTM C 136 shall
be as follows:
Coarse Aggregate
Cumulative Percent
Sieve Size
By Weight Passing
__________
_________________
19 mm 3/4 in.
100
12.5 mm 1/2 in.
50-100
9.5 mm 3/8 in.
25-50
4.75 mm No. 4
0-15
2.36 mm No. 8
0-8
Fine Aggregate
Cumulative Percent
Sieve Size
By Weight Passing
__________
__________________
9.5 mm 3/8 in.
100
4.75 mm No. 4
95-100
2.36 mm No. 8
65-80
1.18 mm No. 16
45-65
0.600 mm No. 30
25-45
0.300 mm No. 50
5-15
0.150 mm No. 100
0-5
2.3
CHEMICAL ADMIXTURES
**************************************************************************
NOTE: Edit as appropriate for the project. Do not
permit the use of calcium chloride.
**************************************************************************
Chemical admixtures, when required or permitted, shall conform to the
appropriate specification listed. Admixtures shall be furnished in liquid
SECTION 03300A
Page 27
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