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PGSF WMVD Storm and Combined Sewer - Construction Package 2 Cast-in-Place Concrete <br />Project No. 180162 03 30 00 - 25 <br /> <br />c. Tests for Temperature and Air Content: <br />1) Temperature tests shall be made at frequent intervals during hot or cold <br />weather conditions until satisfactory temperature control is established. <br />Perform temperature tests whenever test cylinders are cast. <br />2) Measure air content in accordance with ASTM C231 whenever test cylinders <br />are cast. For pumped concrete, measure air content in accordance with the <br />Placing Concrete by Pumping subparagraph of the Conveying and Placing <br />article above. <br />D. Final Laboratory Report: <br />1. The testing laboratory shall provid a final report at the completion of all concreting. <br />This report shall summarize the findings concerning concrete used in the project and <br />provide totals of concrete used by class and structure. <br />2. Include final quality control charts for compressive strength tests for classes of <br />concrete specified in each major structure. Also include the concrete batch plant’s <br />coefficient of variation and standard deviation results for each class of concrete. <br />3.15 REPAIR OF DAMAGED AND CRACKED CONCRETE: <br />A. Acceptance Of Concrete: <br />1. Completed cast-in-place concrete work shall conform to the applicable requirements <br />of ACI 301 and the Contract Documents. Concrete work that fails to meet these <br />requirements shall be repaired, as approved by the Engineer, to bring the concrete <br />into compliance. Repair methods shall be in accordance with ACI standards, <br />including ACI 503.7, and are subject to the approval of the Engineer. <br />2. Concrete that cannot be brought into compliance by approved repair methods will be <br />rejected. Remove and replace rejected concrete work. <br />3. The cost of repairs and replacement of defective concrete shall be borne by the <br />Contractor. <br />B. Repair Methods: <br />1. Damaged/defective concrete or concrete with crack widths exceeding 0.004 inches <br />at liquid-containing and conveying structures or crack widths exceeding 0.006 inches <br />for other structures shall be repaired by one of the following methods (only the <br />Engineer may determine that a defect or crack does not require repair): <br />a. Perform watertightness testing and repair as needed to meet leakage criteria in <br />this specification even when liquid-containing and conveying structures meet the <br />crack width criteria defined above. <br />b. Damaged or defective concrete includes surface defects, honeycomb, rock <br />pockets, indentations greater than 3/16 inch, spalls, chips, air bubbles greater <br />than 1/2 inch diameter, pinholes, bugholes, embedded debris, lift lines, sand <br />lines, bleed lines, leakage from form joints, fins, projections, form popouts, <br />texture irregularities, and stains or other color variation that cannot be removed <br />by cleaning. <br />1) Damaged or defective concrete is repaired according to procedures outlined <br />above under finish requirements, Repair of Surface Defects.