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SCOPE OF AASHTO ACCREDITATION <br />Kleinfelder, Inc. <br />AASH O in Ontario, California, USA <br />ACCREDITED <br />Concrete <br />Standard: <br />C31 <br />Making and Curing Concrete Test Specimens in the Field <br />C39 <br />Compressive Strength of Cylindrical Concrete Specimens <br />C42 <br />Obtaining and Testing Drilled Cores and Sawed Beams of Concrete <br />C78 <br />Flexural Strength of Concrete (Using Simple Beam with Third -Point Loading) <br />C138 <br />Density (Unit Weight), Yield, and Air Content of Concrete <br />C143 <br />Slump of Hydraulic Cement Concrete <br />C157 <br />Length Change of Hardened Hydraulic -Cement, Mortar, and Concrete <br />C172 <br />Sampling Freshly Mixed Concrete <br />C173 <br />Air Content of Freshly Mixed Concrete by the Volumetric Method <br />C192 <br />Making and Curing Concrete Test Specimens in the Laboratory <br />C231 <br />Air Content of Freshly Mixed Concrete by the Pressure Method <br />C511 <br />Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes <br />C617 (8000 psi and below) <br />Capping Cylindrical Concrete Specimens <br />C1064 <br />Temperature of Freshly Mixed Portland Cement Concrete <br />C1231 (7000 psi and below) Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders <br />C1542 <br />Measuring Length of Concrete Cores <br />Page 10 of 11 <br />F <br />This certificate was generated on 03/19/2020 at 3:48 PM Eastern Time. Please confirm the current accreditation sta <br />aashtoresource.org/aap/accreditation-directory <br />