Laserfiche WebLink
SPECIFICATION NUMBER: <br /> Climax Molybdenum CONCRETE CONSTRUCTION 03 30 00 SPE <br /> A Freeport-McMcRan Company TECHNICAL SPECIFICATION PROJECT NAME: <br /> CAVR Shaft Closure Project <br /> 3. "Broomed Finish" shall be performed after the "Float Finish" by drawing a <br /> natural bristle broom across the surface to produce corrugations of regular <br /> appearance not over 1/16 inch deep. The fibers shall be kept clean by <br /> frequent washings; cake on the fibers shall not be allowed to score the <br /> surface. <br /> P. Repairing and Patching Formed Surfaces <br /> 1. Concrete surfaces shall be repaired immediately after form removal. <br /> Cavities produced by form ties, honeycomb, rockpockets, spalling or other <br /> similar defects shall be thoroughly cleaned and kept saturated with water <br /> for a period of at least 1 hour prior to repair. Before placing dry-pack or <br /> mortar, a grout of cement and water mixed to the consistency of paint shall <br /> be brushed into the surfaces to which the dry-pack or mortar is to be bonded. <br /> t Repair of defective areas shall be in accordance with ACI 301, Section 5. <br /> Q. Protection and Curing <br /> 1. Protection and curingshall be accomplished b preventing loss of moisture <br /> p YP g <br /> rapid temperature change, mechanical injury, or damage from rain, frost or <br /> flowing water. Curing shall be started after placing and finishing as soon <br /> as the surface conditions are suitable. Curing of formed surfaces shall be <br /> accomplished by moist curing with forms in place for the full curing period, <br /> 1_ or, if forms are removed prior to the end of the curing period, by one of the <br /> following methods, or combinations thereof. <br /> 2. The minimum curing periods for concrete placed hereunder,except as noted <br /> in ACI 306, shall be: <br /> i Curing Temperature Curing Period <br /> 50OF - 70OF 7 days <br /> 70OF - 100°F 5 days <br /> a. Membrane Curing: Pressure spray tinted curing compounds shall be <br /> of the type approved by the Engineer. The compound shall be <br /> a_ applied according to the Manufacturer's directions, immediately <br /> after finishing operations are completed and forms removed. The <br /> quantity applied shall be sufficient to ensure the formation of a <br /> --- continuous unbroken film. <br /> i. Curing compound shall not be used or permitted on surfaces <br /> where future bonding, concrete hardener, or painting is <br /> indicated. Such surfaces shall be cured by the moist process <br /> ` as-specified previously. <br /> 114-910345 CONCRETE CONSTRUCTION <br /> Climax CAVR Shaft Closure Project 03 30 00 SPE-20 <br />