Nitrogen-gas-stabilized cement and a process for making and using it

摘要

A hydraulic cement slurry which forms a gas-locked cement which contains microsized clefts that are filled with nitrogen gas and is both impermeable and non-shrinking is formed by dissolving in the slurry mix water a correlated amount of gas-forming reactants having a delayed rate of reaction such that the gas production occurs mainly at the time the volume of the slurry mix water is being reduced to a low value during the setting and hardening of the cement.