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Non-shrink grout



Non-shrink grout is a hydraulic cement grout that produces a volume that, when hardened under stipulated test conditions, is greater than or equal to the original installed volume; often used as a transfer medium between load-bearing members. It has the following characteristics:

Additional recommended knowledge

Contents

Testing

Test standards used to designate a grout as non-shrink include, but are not limited to:

  • C1090-01(2005)e1 Standard Test Method for Measuring Changes in Height of Cylindrical Specimens of Hydraulic-Cement Grout

Typical characteristics

  • Often sets rapidly
  • Usually a pre-mix product that needs only to be mixed with water
  • Includes ingredients to compensate against cement stone shrinkage
  • Use of shrinkage-compensating ingredients can result in volume increase over time.

Typical cementitious materials caveats

Despite the use of expanding or shrinkage-compensating ingredients, users are ordinarily cautioned to avoid environments detrimental to the forming of cement stone. These include but are not limited to the following:

  • Avoid high wind across the curing surface.
  • Avoid high temperatures during the cure.
  • Avoid common cement poisons, such as sulphates, acids, etc.

Failure to follow these precautions can adversely affect the quality of all cementitious products, including non-shring grouts.

See also

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Non-shrink_grout". A list of authors is available in Wikipedia.
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