In general, air-entrainment may be controlled to a much greater extent by the use of admixtures with normal cements during mixing. The entrained air bubbles improve the workability of the fresh concrete. These bubbles reduce the capillary and water channel structure within hardened concrete and restrict the passage of water. In addition to the types described above, there are white cement, waterproofed cement, and oil well cement. White cement is made from selected materials to prevent coloring, staining, or darkening of finished concrete.
Waterproofed cement has water-repellent materials added.
The finished and set concrete has a water-repellent action. Oil well cement is specially made to harden properly when used under high temperature in deep oil wells. Integrated Publishing's Official Web Page Click here for a current index of everything on this web site. All Rights Reserved.