*ASTM C881 Type Definitions
Type I — For use in non-load bearing applications for bonding hardened concrete to hardened concrete and other materials, and as a binder in epoxy mortars or epoxy c
Type II — For use in non-load bearing applications for bonding freshly mixed concrete to hardened concrete (new concrete overlays to existing concrete).
Type III — For use in bonding skid resistant materials to hardened concrete, and as a binder in epoxy mortars or epoxy concretes used on traffic bearing surfaces (or surfaces subject to thermal or mechanical movements).
Type IV — For use in load-bearing applications for bonding hardened concrete to hardened concrete and other materials and as a binder for epoxy mortars and concretes. This structural load bearing category is considered to be a technical equivalent to AASHTO M 235.
Type V — For use in load-bearing applications for bonding freshly mixed concrete to hardened concrete.
Type VI — For bonding and sealing segmental precast elements with internal tendons and for span-by-span erection when temporary post tensioning is applied
Type VII — For use as a non-stress carrying sealer for segmental precast elements when temporary post tension is not applied as in span-by-span erection.
*ASTM C881 Grade Definitions
Grade 1 — Low viscosity
Grade 2 — Medium viscosity
Grade 3 — Non-sag viscosity
For additional background on applications, see the links Surface Preparation and Old-to-New Bonding