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Use clean mixing equipment and water free of deleterious amounts of acid, alkali, and organic materials.
Link to Active This link will always route to the current Unfer version of the standard. Trowel- or spray-apply surface bonding mortar to both sides of dry-stacked concrete masonry units.
Masonry Codes and Specifications
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. This practice covers material, workmanship, and construction procedures for applying surface bonded mortar ror both sides of dry stacked concrete masonry units.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
Dampen the wall with a water mist after a specified time, but within a day of application of surface bonding mortar.
Standard Practice for Bracing Masonry Walls Under Construction, MCAA Store
Place units in running bond. It does not include grout, reinforcing, anchorage, or control joints since their use is essentially the same as conventional concrete masonry construction, unless specifically atandard in this practice.
Remove burrs and butt blocks tightly. Mixing time shall be kept to a minimum, as over mixing may cause damage to the fibers. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Courses of concrete masonry units between the leveling courses shall be placed without mortar on pravtice bed or head joints.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part condtruction the standard. Work Item s – proposed revisions of this standard. This abstract is a brief summary of the referenced standard. Use shims, mortar, or surface bonding mortar to plum and level individual units when necessary. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
When a second coat of surface bonding mortar is to be applied, pracrice first coat shall have taken its initial set.
Historical Version s – view previous versions of standard. Shims shall be corrosion-resistant metal or plastic with a required minimum compressive strength. The top of the walls shall be covered with a nonstaining, waterproof covering to prevent moisture from entering the wall until the top pracgice permanently protected.
Mix only full bag multiples of material to overcome any segregation of ingredients. Before applying surface bonding mortar, wet the wall uniformly with water to prevent excessive suction of water from the surface bonding mortar.
Mortar shall be mixed and shall be selected in accordance with the proportion specification prescribed.