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I <br />L' <br />E <br />9 <br />III' <br />I <br />I <br />u. <br />Sieve Size <br />Percent Passing <br />3 1/2 inches <br />[90 mm] <br />100 <br />No. 200 <br />[75µm] <br />0 -15 <br />548 -3 Concrete Component Construction. <br />Construct concrete components in accordance with Section 400. Precast wall <br />components are produced using certification acceptance; therefore, assume responsibility <br />for performance of all quality control testing and inspections required by Sections 346 and <br />400 for the precast component construction. Perform all Quality Control inspection and <br />testing using CTQP qualified personnel. Perform compressive strength testing in a <br />laboratory inspected by CCRL or CMEC. The minimum time for form removal is 12 hours. <br />Unless otherwise indicated in the Contract Documents, apply a Class 3 finish to the <br />concrete surface for the front face, and roughly screed the rear face to eliminate open <br />pockets of aggregate and surface distortions in excess of 1/4 inch [6 mm]. <br />548 -3.1 Curing: Cure concrete components in accordance with Section 400. <br />548 -3.2 Tolerances: Meet the following manufactured tolerances: <br />1. Precast Component Dimensions: Lateral position of soil reinforcement <br />attachment devices - within 1 inch [25 mm]. All other dimensions - within 3/16 inch [5 mm]. <br />2. Precast Component Squareness: Angular distortion of the component shall <br />not exceed 0.2 inches in 5 feet [5 mm in 1.5 m]. <br />3. Precast Component Surface Finish: Surface defects on smooth formed <br />surfaces measured on a length of 5 feet [1.5 m] shall not exceed more than 0.1 inch <br />[3 mm]. Surface defects on textured finished surfaces measured on a length of 5 feet. <br />[1.5 m] shall not exceed 5/16 inch [8 mm]. <br />548 -3.3 Marking of Precast Components: Clearly mark each precast components <br />with the date of manufacture, the 346 concrete production LOT number and the piece - <br />mark. <br />548 -4 Rejection of Precast Components. <br />The Department will reject all precast concrete wall components not meeting the <br />quality standard of this Section and referenced Specifications. In addition, any of the <br />following defects will be sufficient cause for rejection by the Department: <br />1 . Defects that indicate unsatisfactory molding. <br />2. Defects indicating honeycombed or open texture concrete. <br />3. Defects in the physical characteristics such as: <br />Signs of aggregate segregation; <br />Broken or cracked corners; <br />Soil reinforcement attachment devices improperly installed /damaged; <br />Lifting inserts not useable; <br />Exposed reinforcing steel; <br />Insufficient cover over reinforcing steel; <br />Cracks at the alignment pipe or pin; <br />Insufficient concrete compressive strength; <br />Precast Component thickness in excess of ± "')/16 inch [ ± 5 mm] from <br />that shown in the Contract Documents; or <br />Stained front face, due to excess form oil or other reasons. <br />If the face of the precast component is stained or discolored to the point of <br />rejection, the stain or discoloration may be removed or a Department approved stain or a <br />- r <br />March 2007 01000 -124 03- 4122.D ;, ` <br />