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Grout

Cementitious Grouts
There are several types of cementitious grouts, the two most common classes in construction are Class A and Class C. Both classes are referred to as "non-shrink" however it is more accurate to say they are shrinkage compensated.

The main difference between the two is the expansion systems they contain to compensate for the shrinkage that would otherwise occur. Class A grout expands during the plastic state (i.e. uncured) and Class C grout expands in both the plastic and hardening stages. Both can achieve high strength when appropriately constrained during curing.

For precision structural grouting, usually Class C grouts are specified. They are more expensive relative to Class A.

Bostik Grout Application Instructions - from Bostik Construction Grouts Brochure

Class A Grout
Auscon GP 50
Bostik Flowflill GP

Class C Grouts
​Auscon HS 80 HES
Bostik Techflow HES
Bostik Techflow HS
Bostik Techflow GP
Aftek Penatech HES
Lanko 701 Duragrout

Epoxy Grouts

Grouts vary in viscosity and cured properties. They are generally used to fill voids with a solid that adheres strongly to the material is encapsulated in, and embed other materials.

Epoxies that can be used for grouting include;
Megapoxy 57
Megapoxy H 
Megapoxy HX
Megapoxy 206


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