[Adopted 6-10-1997 by L.L. No. 3-1997]
All concrete utilized for the construction of curbs shall, in addition
to meeting State Department of Transportation Specifications as may be from
time to time promulgated, also be the product of a mix of which there shall
not contain excessive amounts of deleterious substances.
All product utilized in the mix of concrete intended for use in public
improvements shall be the product of clean aggregate. For purposes hereof,
"clean aggregate" shall be defined as a composite containing not more than
the following percentages by dry weight of deleterious substances:
|
Deleterious Substance
|
Percentage Allowed in Clean Aggregate
(dry weight)
| |
|---|---|---|
|
Clay
|
1.0%
| |
|
Material finer than 200 sieve:
| ||
|
Concrete subject to abrasion
|
3.0%
| |
|
All other concrete
|
5.0%
| |
|
Saturated-surface dry material coarser than No. 50 sieve, floating on
a liquid having a specific gravity of 2.0
|
0.5*
| |
|
Crushed aggregates of finer than No. 200 sieve containing dust of fracture
and essentially free from clay or shale
|
1.5%
| |
|
Chert that will readily disintegrate (soundness test 5 cycles)
|
1.0%
| |
|
* NOTE: Not applicable to sand produced from blast furnace
|
The Town Highway Superintendent and/or the Town Engineer shall approve
for use such suppliers as shall be determined to have products which meet
or exceed the standards set forth herein.
Material supplied by an unapproved supplier may be utilized, provided
that said supplier or contractor can demonstrate that the product to be used
meets or exceeds the standards set forth herein.
