Vol 2 - Garney Construction

materials providing sulfate resistance with expansion lessthan 0.10 percent at 6 months.8. Unless otherwise permitted, minimum cementitious materials content inmix design shall be 600 pounds per cubic yard.9. Limit water-soluble, chloride-ion content in hardened concrete to0.10 percent, unless otherwise specified.a. Limits are stated in terms of chloride ions in percent by weight ofcement.b. Unless otherwise permitted, provide documentation from concretetested in accordance with ASTM C1218/C1218M at an agebetween 28 days and 42 days.10. Fiber Reinforcement:a. Fibers conforming to ASTM C1116, Type III.b. Provide polypropylene micro-fibers in design mix at a rate of atleast 1.5 pounds per cubic yard.c. Add fiber-reinforcement to grout topping in concrete plant.d. Slump as required to maintain homogeneous mix and to allowplacement to meet equipment manufacturer’s placing tolerance.e. Mix fiber reinforced grout topping to consistency, easily screededwith conventional tools, but not too thin that topping will notmaintain to required thickness.D. Grout Strength Tests:1. Make three 2-inch by 2-inch cubes for each 150 cubic feet of grout. Userestraining caps for cube molds in accordance withASTM C109/C109M.2. Independent testing laboratory shall prepare, store, cure, and test cubesin accordance with ASTM C109/C109M, except that the proposed grouttopping mix design shall be tested in lieu of the mix specified inASTM C109/C109M.3. Store cubes at 70 degrees F.4. Nonshrink grout cubes shall test equal to or greater than minimumstrength specified.5. Strength Test Failures: Unless otherwise permitted, grout work failingstrength tests shall be removed and replaced.E. Refer to PART 1 through PART 3 of this section for additional requirements.CAST-IN-PLACE CONCRETEPW/WBG/38205903 30 00 SUPPLEMENT 06 - 2 AUGUST 15, 2012©COPYRIGHT 2012 CH2M HILL