Specifications include, but are not limited to: CONCRETE PAVING Sidewalks within public right-of-ways shall be 5 feet minimum in width or match existing width, with a thickness of 6 inches of 4,000 PSI with Fiber Mesh. No cold joints except at expansion joints. Sidewalks must comply with all current ADA regulations. Normal-Weight Aggregates: ASTM C 33/C 33M, class 4M uniformly graded. Maximum coarse-aggregate size: 1-1/2 inches (38mm) nominal Fine aggregate: free of materials with deleterious reactivity to alkali in cement Exposed Aggregate: selected, hard, and durable; washed; free of materials with deleterious reactivity to cement or that cause staining; from a single source, with gap-graded coarse aggregate. Aggregate sizes shall be ¾ to 1 inch (19-25mm) nominal. Curing Materials Curing materials shall meet the following requirements: A. Absorptive Cover: AASHTO M 182, class 3, burlap cloth made from jute or kenaf, weighing approximately 9oz/SY dry or cotton mats B. Moisture-retaining cover: ASTM C 171, polyethylene film or white burlap-polyethylene sheet C. Water: potable D. Evaporation retarder: waterborne, monomolecular, film forming, manufactured for application to fresh concrete E. Clear, waterborne, membrane-forming curing compound: ASTM C 309, type 1, class B, dissipating F. White, waterborne, membrane-forming curing compound: ASTM C 309, type 2, class B, dissipating Related Materials A. Joint fillers: ASTM D 1751, asphalt-saturated cellulosic fiber or ASTM D 1752, cork or selfexpanding cork in preformed strips. B. Slip-resistive aggregate finish: factory-graded, packaged, rustproof, non-glazing, abrasive aggregate of fused aluminum-oxide granules or crushed emery aggregate containing not less than 50% aluminum oxide and not less than 20% ferric oxide; unaffected by freezing, moisture, and cleaning materials. C. Epoxy-bonding adhesive: ASTM C 881/C 881M, two-component epoxy resin capable of humid curing and bonding to damp surfaces; of class suitable for application temperature, of grade complying with requirements, and of types I and II, non-load bearing, types IV and V, load bearing, for bonding hardened or freshly mixed concrete to hardened concrete. D. Chemical surface retarder: water-soluble, liquid, set retarder with color dye, for horizontal concrete surface application, capable of temporarily delaying final hardening of concrete to a depth of 1/8 to 1/4 inch (3 to 6 mm). E. Pigmented mineral dry-shake hardener: factory-packaged, dry combination of Portland cement, graded quartz aggregate, color pigments, and plasticizing admixture. Use of color pigments that are finely ground, non-fading mineral oxides interground with cement.
