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Pre-weighed, non-chloride based accelerating powder


Specco Set Fast A-94 is a powdered chloride-free admixture for masonry designed to accelerate the set and help develop early compressive and tensile strength of cement mortars in cold temperatures. Set Fast A-94 is conveniently packaged in pre-measured 2 lb. bags with printed instructions for easy addition to the mixer.


  • Provides faster mortar set times.
  • Increase early strength development.
  • Non corrosive to reinforcement steel or wall ties.
  • Does not contribute to any salting or surface efflorescence.
  • Safe to use in colored mortars.
  • Pre-measured bags allow even job consistency.

COMPOSITION: Proprietary blend of inorganic accelerator powders. Specco Set Fast A-94 does not contain any calcium chloride or intentionally added chlorides that would initiate or promote corrosion of reinforcement steel.

DOSAGE: The recommended Set Fast A-94 dosage is dependent on both working temperature and mortar composition type. For temperatures ranging from 15-32° F, Set Fast A-94 is typically dosed at 2 bags per 94 lbs. of Portland cement for Portland cement-lime mortars. If masonry cement mortar, or pre-packaged mortar mixes are used, add 1 bag of A-94 for every bag of masonry cement or pre-packaged mortar used. For temperatures above 32° F, the above dosages can be reduced as needed. The amount of acceleration obtained will vary with jobsite temperature, air movement, sand and water temperatures, mix design components or other admixtures, as well as heat, insulation, or wind-break protective measures used. For additional reference, Specco recommends following the cold weather masonry construction guidelines listed under Chapter 5 of ACI 531R-79 Building Code Requirements for Concrete Masonry Structures

AVAILABLE IN: 2 lb heat sealed individual bags (0.91kg) (packed 25 bags / carton)

Available info for SET FAST A-94:
Tech Data MSDS

Tech Data



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