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<br />PART 3 -EXECUTION <br />3.01 Preparation <br />A. Surface Preparation-Grout <br />1. Concrete surfaces to be grouted shall be cleaned of loose particles, <br />grease, paint, or other foreign matter. <br />2. The surface shall be clean, rough, and thoroughly dampened, bu•t <br />without surplus water before grouting is begun. <br />3. The undersides of base plates or metal surfaces shall be cleaned of all <br />grease and oil-like films. <br />B. Surface Preparation -Epoxy <br />1. .All surfaces on which epoxy compounds are to be applied shall be free <br />of grease, dirt, dust, paint, mill scale, curing compound, laitance and <br />other foreign detrimental material. <br />2. Surfaces which are judged unsound shall be removed to a depth at <br />which bond strengths suitable to the Engineer can be obtained. <br />3. UNess otherwise specified on the drawings, all concrete surfaces on <br />which epoxy compounds are to be used shall be ground or sand-blasted <br />for a time sufficient to expose the sound concrete. Immediately <br />following the sandblasting, the surface shall be thoroughly broomed <br />and blown with oil-free and water-free compressed air to remove <br />chips and sand. <br />4. Other surface treatment methods may be used if approved in writin€; <br />by the Engineer. <br />5. Before epoxy compounds are applied to metal surfaces, they shall be <br />sandblasted to a bright metallic luster. <br />3.02 Application <br />A. Grout <br />1. Non-shrinking grout shall be prepared and placed in strict accordant<: <br />with the manufacturer's specifications and instructions. <br />2. The exposed surfaces of the non-shrinking grout shall be topped with <br />a minimum of 1/8" of plain Portland cement and sand mortar, applied <br />before the grout has set. <br />B. Epoxy <br />1. Epoxy compounds shall be prepared and placed in accordance with thE: <br />manufacturer's recommendations. <br />• <br /> <br />nss~n-2 <br />