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<br />0D2452 <br /> <br />Durango Pumoing Plant - Stage I <br /> <br />Amendment 001 <br /> <br />SECTION 03370 - SHOTCRETE <br /> <br />PART 1 <br /> <br />GENERAL <br /> <br />1.01 MEASUREMENT AND PAYMENT <br /> <br />A. Shotcrete <br /> <br />I. Measurement: Made of the number of cubic yards of shotcrete applied. <br /> <br />2. Payment: Cubic yard price offered in the schedule. Includes cost of all labor, <br />materials, tools, and equipment required by this section. <br /> <br />B. Deleted <br /> <br />C. Weep Holes in Shotcrete <br />I. Measurement: Made of the number of weep holes drilled. <br />2. Payment: Unit price per weep hole offered in the schedule. <br /> <br />1.02 REFERENCES <br /> <br />A. American Society of Testing and Materials (ASTM) <br /> <br />I. ASTM C 128-97 Specific Gravity and Absorption of Fine Aggregate <br /> <br />2. ASTM C 566-97 Total Evaporable Moisture Content of Aggregate by <br />Drying <br /> <br />3. ASTM D 1785-01 Poly(Vinyl Chloride (pVC) Plastic Pipe, Schedules 40,80, <br />and 12 <br /> <br />B. U. S. Bureau of Reclamation (USBR) <br />1. USBR M-47 ,Standard Specifications for Repair of Concrete, 1996 <br /> <br />1.03 DEFINITIONS <br /> <br />A. Shotcrete: Any pneumatically applied concrete or mortar placed directly onto a surface <br />and is composed of water, cementitious materials, sand, coarse aggregate, and admixtures <br />as specified and placed by dry-mix or wet-mix process as specified herein. <br /> <br />B. Dry-mix process: Consists ofthoroughly mixing dampened solid materials, feeding these <br />materials into a mechanical feeder or gun, carrying the materials by compressed air <br />through a hose to a special nozzle, introducing the water and intimately mixing it with the <br />other ingredients at the nozzle, and then jetting the mixture from the nozzle at high <br />velocity onto the surface to receive the shotcrete. Liquid accelerator shall be added to the <br />mixture at the nozzle. Powder accelerator shall be added to the mixture as the mixture <br />enters the mechanical feeder or gun. <br /> <br />Shotcrete <br />03370 - I <br />