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// CODE SNIPPET

1904.3.2 Calcium Chloride

NYC Building Code 2008 > 19 Concrete > 1904 Durability Requirements > 1904.3 Sulfate Exposures > 1904.3.2 Calcium Chloride
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Calcium chloride as an admixture shall not be used in concrete to be exposed to those severe or very severe sulfate-containing solutions defined in Table 1904.3.

TABLE 1904.3
REQUIREMENTS FOR CONCRETE EXPOSED TO SULFATE-CONTAINING SOLUTIONS
SULFATE
EXPOSURE
WATER SOLUBLE
SULFATE (SO4) IN
SOIL, PERCENT
BY WEIGHT
SULFATE (SO4)
IN WATER
(ppm)
CEMENT TYPE MAXIMUM
WATER-CEMENTITIOUS
MATERIALS RATIO,
BY WEIGHT,
NORMAL-WEIGHT
AGGREGATE
CONCRETEa
MINIMUM f'c
NORMAL-WEIGHT
AND LIGHTWEIGHT
AGGREGATE
CONCRETE (psi)a
ASTM
C 150
ASTM
C 595
ASTM
C 1157
Negligible 0.00 - 0.10 0 - 150
Moderateb 0.10 - 0.20 150 - 1,500 I, IP (MS),
IS (MS), P (MS),
I (PM)(MS),
I (SM)(MS)
0.50 4,000
Severe 0.20 - 2.00 1,500 - 10,000 V HS 0.45 4,500
Very severe Over 2.00 Over 10,000 V plus
pozzoland
HS plus
pozzoland
0.45 4,500
For SI: 1 pound per square inch = 0.00689 MPa.
  1. A lower water-cementitious materials ratio or higher strength may be required for low permeability or for protection against corrosion of embedded items or freezing and thawing (see Table 1904.2.2).
  2. Seawater.
  3. Pozzolan that has been determined by test or service record to improve sulfate resistance when used in concrete containing Type V cement.
  4. Pozzolan that has been determined by test or service record to improve sulfate resistance when used in concrete containing Type HS blended cement.

Related Code Sections


1904.3.2 Concrete, Calcium Chloride
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to freezing temperature, unless used in a dry pipe system or a system filled with calcium chloride solution or other approved non-freezing solution ...
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When using this method of application, calcium aluminate cement up to 15 percent of the weight of the portland cement is permitted to be added ...
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