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Title: Section 2510  •  Size: 2918

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SECTION 2510 - PNEUMATICALLY PLACED PLASTER (GUNITE)

Pneumatically placed portland cement plaster shall be a mixture of portland cement and sand, mixed dry, conveyed by air through a pipe or flexible tube, hydrated at the nozzle at the end of the conveyor and deposited by air pressure in its final position.

Rebound material may be screened and reused as sand in an amount not greater than 25 percent of the total sand in any batch.

Pneumatically placed portland cement plaster shall consist of a mixture of one part cement to not more than five parts sand. Plasticity agents may be used as specified in Section 2508.1. Except when applied to concrete or masonry, such plaster shall be applied in not less than two coats to a minimum total thickness of 7/8 inch (22 mm). The first coat shall be rodded as specified in Section 2508.3 for the second coat. The curing period and time interval shall be as set forth in Table 25-F.

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