2016-01-18_REPORT - M1977493

• Permit No: M1977493
• IBM Index Class Name: REPORT
• Doc Date: 1/18/2016
• Doc Name: Asbestos Disposal Shaft Closure Report
• From: Climax Molybdenum
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

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