Hot & Cold Weather Masonry Construction

Material Storage

General. All masonry materials, when delivered to the job site, must be carefully stored.

Bagged materials and masonry units, when delivered to the construction site, should be stored elevated to prevent moisture migration from the ground to the materials, and then protected against water penetration through the sides and the top.

Coverings should be properly installed so that all materials are completely covered. Tarpaulins, reinforced paper, or other water-repellent sheet materials may be used. Sufficient space should be provided between the materials and the covers to allow circulation to take place.

If the weather and size of the project warrant, it is recommended that a shelter be provided for the materials storage and mortar mixing areas.

Summary. Accelerators, if specified and used, should be nonchloride based. Their use does not eliminate the need to implement recommended cold weather practices.

Grout. Requirements for grout are contained in ASTM C 476 Standard Specification for Grout for Masonry. Slump should be maintained as high as possible for proper placement.

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