Masonry Cement Type S

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: 98 Minutes
Specification: 90 Minutes (Min.) ASTM C 91

Final Set: Test Result: 180 Minutes
Specification: 1440 Minutes (Min.) ASTM C 91

Air Content: ASTM C 185
Test Result: 5.0%
Specification: 8-19% ASTM C 91

Water Retention: ASTM C 91
Test Result: 91.5%
Specification: 70% (Min.) ASTM C 91

Compressive Strengths:
7 Day: Test Result: 2360 psi.
Specification: 1300 psi. (Min.) ASTM C 91

28 Day: Test Result: 2780 psi.
Specification: 2100 psi. (Min.) ASTM C 91