SPEC MIX® Masonry Mortar is a dry, preblended mortar mix containing Portland cement, hydrated lime and dried masonry sand formulated for superior bond, water retention and board life.

SPEC MIX Masonry Mortars meet:

-ASTM C270 Mortar for Unit Masonry
-ASTM C1714 Preblended Dry Mortar Mix for Unit Masonry
-2016 CBC Sections 2103.2.1 and 2103A.2.1
Approvals:

-DSA/OSHPD (DSA/IR A-5 Compliant)
-City of Los Angeles Research Report No. 24968
-California Department of Transportation

http://www.specmix.com/wp-content/uploads/2012/07/MR_Sand.pdf