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:

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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

• ASTM International
• Canadian Standards Association
• Deutsches Institut für Normung