Laserfiche WebLink
1. Provide a technician at site of placement to perform concrete sampling and testing. <br /> 2. Take concrete samples in accordance with ASTM C172. Mold and cure compression <br /> test cylinders in accordance with ASTM C31. Make at least four cylinders for each <br /> 50 cubic yards or less of each concrete type,and at least four cylinders for any one <br /> day's pour for each concrete type. After good concrete quality control has been <br /> established and maintained as determined by A/E, make four cylinders for each 100 <br /> cubic yards or less of each concrete type, and at least four cylinders from any one <br /> day's pour for each concrete type. Label each cylinder with an identification number. <br /> A/E may require fewer cylinders per set to be molded and cured under job conditions. <br /> 3. Test slump of concrete periodically and during making of concrete test cylinders. <br /> Method of making a slump tests shall be as described in ASTM C143. <br /> 4. Determine air content of air entrained concrete at least twice a day during progress of <br /> work and during making of concrete test cylinders.Determine air content by either <br /> ASTM C173 or ASTM C231. <br /> 5. If slump or air content fall outside specified limits another test shall be made <br /> immediately from another portion of same batch. <br /> C. Laboratory Tests of Field Samples: <br /> 1. Test compression test cylinders for strength in accordance with ASTM C39. For <br /> each test series,test one cylinder at seven days and two cylinders at 28. The <br /> remaining cylinder will be used as a spare to be tested at either seven or 28 day test as <br /> required. Laboratory test reports shall be compiled as follows: Compressive strength <br /> test shall be the result of one cylinder for seven day test,and the average result of two <br /> cylinders for 28 day test. When any one cylinder shows evidence of improper <br /> sampling,molding or testing,it shall be discarded and replaced by the spare cylinder. <br /> D. Report Data Required: Furnish certified compression test reports(duplicate)to A/E and <br /> Owner. Test report shall include the following information: <br /> 1. Cylinder identification and date cast. <br /> 2. Specific location at which test samples were taken and concrete ticket number. <br /> 3. Type of concrete,slump and percent air entrainment. <br /> 4. Compressive strength of concrete in psi. <br /> 5. Weather conditions during placing. <br /> 6. Temperature of concrete in each test cylinder when test cylinder was molded. <br /> 7. Maximum and minimum ambient temperature during placing. <br /> ADDENDUM#1 <br /> 1607.001 -ORONO ICE ARENA(CP-2) Page 02515 -7 <br />