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Cement composition curable at low temperatures

  • US 4,842,649 A
  • Filed: 10/02/1987
  • Issued: 06/27/1989
  • Est. Priority Date: 10/02/1987
  • Status: Expired due to Term
First Claim
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1. A blended hydraulic cement composition, capable of curing at temperatures below freezing, consisting essentially of:

  • From 50 parts to about 80 parts portland cementFrom 13 parts to about 35 parts fly ashFrom 0 parts to about 10 parts metakaolinFrom 0 parts to about 6 parts slagFrom 0 parts to 4 parts admixture, wherein said admixture is a set regulating additive,From 1 part to about 5 parts potassium carbonate, wherein the parts of potassium carbonate plus one-half of the parts of metakaolin is equal to at least 2.

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