• Overview
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Fritz-Pak FR-1 is a dry powdered concrete water reducer packaged in a patented ready-to-use water-soluble bag. It is formulated to produce a more uniform and workable mix with less water that yields stronger more durable concrete. This product is recommended for all types of concrete where improved concrete performance with a lower water-cement ratio and/or set retardation is desired. It does not contain calcium chloride or other potentially corrosive materials and is compatible with all standard concrete admixtures.

959101 lb. water soluble bag3025
953002.5 lb. water soluble bag1025
9591350 lb. paper bag40
What is the shelf life of FR-1?
If stored properly, about 1-2 years. If the material ever seems hard or caked, do not use it. It will not break up in the mix.
What is the difference between a water reducer and a superplasticizer?
Both have the ability to chemically disperse cement, without the addition of water. That is why they are called water reducers. A water reducer has a limited capability in dispersion or water reduction, usually no more than 10% water reduction. A superplasticizer is a much stronger material and can reduce water content up to 40 %.
Will FR-1 discolor the concrete?
No, at the recommend dosage rate FR-1 will not discolor the concrete.
Does FR-1 affect the strength of the concrete?
Yes, if you use less water when adding FR-1, your concrete will be stronger. If your water content is not changed, strength is not changed.
Will it change the set time?
Yes. It is a slight retarder.
Will FR-1 effect the air content?
What standards does it meet?
Meets ASTM C-494 Type D, AASHTO M-194 & CRD C-87.
Can I lower my cement content?
Yes. By lowering the water:cement ratio you can expect higher strengths. You can lower your cement content to lower your strength to meet your specification.
What are the best applications of FR-1?
FR-1 is extensively used as an ingredient in the manufacture of stuccos, bagged concrete, mortars, color hardeners and other cement based materials. Besides water reduction, it can also be used as a retarder for products used in warm weather conditions.
  • Increases compressive and flexural strengths
  • Higher strengths may be achieved more economically
  • Higher durability
  • Decreases segregation
  • Improved workability.
  • Extended set times may be achieved
  • Reduced water content for a given slump
  • FR-1 is packaged in water-soluble Fritz-Pak inner bag for convenient use at plant or job site, eliminating the need for admixture dispensers


FR-1 is compatible with all air-entraining admixtures, calcium chloride and other admixtures. When used with other admixtures, each admixture must be dispensed separately into the mix.

Applicable Standards

This product meets the following specifications:

  • ASTM C-494 Type D
  • AASHTO M-194
  • CRD C-87