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  <br />CITY OF SUNNY ISLES BEACH SECTION 03400 - 3 <br />CEMENT GROUT <br />  <br /> <br />G. The grout mixture for the initial grouting stage after each casing liner installation shall <br />be API Class B neat Portland cement mixed with no more than 6 gallons of water per <br />sack of cement. At a minimum, the neat cement mixture shall be used to grout the <br />lower 50 linear feet of casing. Additional grouting stages after casing installation above <br />the initial grouting stage will be API Class B Portland cement mixed with up to 6% <br />bentonite and no more than 9 gallons of water per sack of cement. Only potable water <br />shall be used for the grout mix. <br /> <br />3.2 SETTING TIME <br /> <br />A. Each cement stage should be allowed to set for at least 12 hours and its level <br />measured before proceeding with the next stage. <br /> <br />B. Cement will be allowed to cure 48 hours before continuation of drilling operations. <br /> <br /> <br />END OF SECTION