Masonry Cement Type N

ASTM C-91

Masonry cements are cements designed for use in mortar for brick, block and stone masonry construction. They are usually composed of a blend of Portland cement and plasticizing materials such as hydrated lime, limestone, or talc and other materials introduced to enhance the cement properties. Materials are usually selected for their ability to impart workability, plasticity and water retention. The components are proportioned at the manufacturing plant to assure product consistency.

Masonry cements meet the requirements of ASTM C-91, which classifies them as Type N or Type S for use in ASTM C-270 Type N or Type S mortars.

Specifications

Autoclave Expansion: ASTM C 151
Test Result: 0.2%
Specification: 1.0% (Max.) ASTM C 91

Time Of Set: ASTM C 266
Initial Set: Test Result: 128 Minutes
Specification: 120 Minutes (Min.) ASTM C 91

Final Set: Test Result: 196 Minutes
Specification: 1440 Minutes (Min.) ASTM C 91

Air Content: ASTM C 185
Test Result: 5.2%
Specification: 8-21% ASTM C 91

Water Retention: ASTM C 91
Test Result: 91.4%
Specification: 70% (Min.) ASTM C 91

Compressive Strengths:
7 Day: Test Result: 1880 psi.
Specification: 500 psi. (Min.) ASTM C 91

28 Day: Test Result: 2580 psi.
Specification: 900 psi. (Min.) ASTM C 91