(a) All concrete work shall be done in a professional manner and according to accepted engineering practices as defined by Ohio Ready Mixed Concrete Association industry recommendation for exterior residential concrete flatwork. All concrete installations shall be inspected prior to placement and after completion of work.
(b) Immediately after the finishing operations have been completed and after the free water has evaporated from the surface, the concrete shall be cured by spraying thereon a uniform application of curing membrane in such a manner as to provide a continuous uniform film without marring the texture of the surface. This membrane will keep the moisture in the concrete. The curing material shall be applied in accordance with the manufacturer's coverage rate. To ensure adequate coverage the curing material shall be applied in two directions at right angles. Curing material shall be thoroughly agitated immediately prior to use. As soon as the forms have been removed, immediately correct all honeycomb areas and coat the edges of the pavement with the curing material.
(c) Curing may also be accomplished by means of water curing with wet burlap cloth, waterproof paper or polyethylene sheeting. Curing shall be applied as soon after the finishing operations as possible without marring the surface texture. Curing shall be continued for a minimum of seven days.
(d) During unusually warm, dry and windy weather the surface of the concrete may tend to dry and crack, a condition known as plastic shrinkage cracking. When weather conditions occur that can cause plastic shrinkage cracking, the surface must be kept moist either by a fog spray of water or the application of a monomolecular film to retard the moisture evaporation until the curing is applied.
(e) For concrete placed when the temperature of the air is 35°F or below, the contractor will be required to submit procedures that delineate how the contractor intends to place and cure concrete during cold weather. The contractor shall address how to keep the subgrade from freezing, maintaining surface temperature of in-place concrete between 50°F and 100°F for a period of not less than five days and prevent surface scaling.
(f) The contractor shall be responsible for protecting the concrete. The above requirements are minimum requirements only.
(Ord. 1987-52. Passed 12-14-87; Ord. 2003-26. Passed 10-13-03.)