Method for stabilizing aluminous cements and cements obtained

Abstract

Abstract A process for the stabilization of aluminous cements is disclosed wherein a substance is added to the anhydrous cement mixture to prevent the formation of cubic aluminate and free water in the cement. Substances capable of forming alkaline earth carbonates, or hydroxy carbonates or precursors thereof, the natural and synthetic calcium borates, organic complexing agents for aluminum, diamino-benzene, and o-aminophenol and ethers, esters, ammonium salts and anhydrides of the complexing agents, diamino-benzene, and o-aminophenol may be used. The amount of carbonate-containing or carbonate-forming substance which is added should be sufficient to correspond to an addition of alkaline earth carbonate of about 10 percent by weight based upon cement. The amount of calcium borates which may be added ranges from 2 percent to 5 percent and the amount of organic complexing agent, diaminobenzene and o-aminophenol or the respective ether, ester, ammonium salt or anhydride which are added should be about 0.1 percent to 0.5 percent.

Inventors

• 👤 Paul Stiglitz
• 👤 Gerard Sadran
• 👤 Henri De Saint-Chamant

Bibliographic Details