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<br />002433 <br /> <br />Durango Pumoing Plant - Stage I <br /> <br />a. Unformed surfaces not permanently concealed by fill material, grout, or <br />concrete, or not required to receive finish UI or U3. <br /> <br />b. Second stage of finish U3. <br /> <br />c. Floating may be performed by use of hand- or power-driven equipment. <br /> <br />d. Start floating as soon as the screeded surface has stiffened sufficiently, but <br />before bleed water forms, and provide the minimum necessary to produce <br />a surface that is free of screed marks and is uniform in texture. <br /> <br />e. If finish U3 is to be applied, continue floating until a small amount of <br />mortar without excess water is brought to the surface, so as to permit <br />effective troweling. <br /> <br />7. Finish U3 (troweled finish) <br /> <br />a. Unformed surfaces, the appearance and porosity of which is considered to <br />be of special importance. <br /> <br />b. Delay troweling until bleed water has disappeared. <br /> <br />c. After bleed water has disappeared and when the floated surface has <br />hardened sufficiently to prevent an excess of fine material from being <br />drawn to the surface, start steel troweling. <br /> <br />d. Perform steel troweling with firm pressure so as to flatten the sandy <br />texture of the floated surface and produce a dense uniform surface, free <br />from blemishes and trowel marks. <br /> <br />E. Finish, Surface Tolerances, and Curing Schedules <br />Table 03300C - Formed Surfaces <br /> <br />Surface Finish Maximum Acceptable Curing <br /> AJlowable Methods <br /> Tolerances <br />Surfaces upon or against F1 TI Water <br />which fill material will be White wax -base, or white <br />placed water-emulsified resin- <br /> base curing compound <br />Surfaces not permanently F2 T3 Water <br />concealed by fill material White wax-base, or white <br /> water-emulsified resin- <br /> base curing compound <br />Architecturally exposed F2 T4 Clear curing compounds, <br />surfaces as shown on the water-emulsified resin- <br />drawings base if outdoors <br /> No fugitive dye for curing <br /> compound for colored <br /> concrete <br /> <br />Cast-in-Place Concrete <br />03300 - 29 <br />