ASTM C1622/C1622M − 10 Standard Specification for Cold-Weather Admixture Systems

ASTM C1622/C1622M − 10 Standard Specification for Cold-Weather Admixture Systems

Scope

1.1 This specification covers cold-weather admixture systems to be added to hydraulic-cement concrete when the

temperature of the concrete immediately after placement will be as low as -5.0 °C [23.0 °F] prior to the time of

initial set.

1.2 This specification stipulates tests of the cold-weather admixture system with suitable materials as described

in 11.1-11.3 or with materials proposed for specific work (See 11.5).

Unless otherwise requested by the purchaser, tests shall be made using suitable concreting materials as

described in 11.1-11.3.

NOTE 1—Whenever practicable, tests should be made using the concreting materials, the mixture proportions,

and batching sequence proposed for the specific work (See 11.5) because the time of setting, compressive

strength gain, and other properties may vary.

1.3 This specification provides three levels of testing.

1.3.1 Level 1—During the initial approval stage, proof of compliance with the performance requirements defined

in Table 1 demonstrates that the cold-weather admixture system meets the requirements of this specification.

Uniformity and equivalence tests (See Section 6) shall be carried out to provide results against which later

comparisons can be made.

ASTM C1622/C1622M − 10 Standard Specification for Cold-Weather Admixture Systems

General Requirements

5.1 For initial compliance with this specification, the concrete shall be tested with the cold-weather admixture

system for conformance with the requirements in Table 1.