Vol 2 - Garney Construction

B. Pre-repair Conference:1. Required Meeting Attendees:a. Contractor.b. Repair Subcontractor.c. Technical representative for repair material manufacturer.d. Engineer.2. Schedule and conduct prior to incorporation of respective products intoProject. Notify Engineer of location and time.3. Agenda shall include, but not limited to:a. Review of field conditions. Conduct field observations of theWork to be performed.b. Based on above observations, repair material manufacturer’stechnical representative shall confirm material selection and makeProject specific repair method recommendations.c. Technical representative for repair material manufacturer shallreview proposed surface preparation, material application,consolidation, finishing, curing, and protection of repair materialfrom weather conditions.d. Other specified requirements requiring coordination.1.05 DELIVERY, STORAGE, AND HANDLINGA. Package repair mortar system products in moisture-resistant bags, pails, ormoisture-resistant bulk bags.B. Deliver, store, and handle repair materials in accordance with manufacturer’sprinted instructions.PART 2PRODUCTS2.01 SYSTEM NO. 1—MAGNESIUM PHOSPHATE REPAIR MORTARA. One or two-component, magnesium-ammonium-phosphate concrete mortar.B. Compressive Strength, ASTM C109/C109M modified:1. 1 Hour: 2,000 psi minimum.2. 3 Hours: 5,000 psi minimum.3. 1 Day: 6,000 psi minimum.4. 28 Days: 7,500 psi minimum.C. Flexural Strength, ASTM C78/C78M Modified (3-inch by 4-inch by 16-inchprism) at 1 Day: 550 psi minimum.D. Modulus of Elasticity, ASTM C469 at 7 Days: 4.18 by 10 6 psi minimum.REPAIR OF HORIZONTALPW/WBG/382059CONCRETE SURFACES AUGUST 15, 201203 01 33 - 4 ©COPYRIGHT 2012 CH2M HILL