Laserfiche WebLink
<br />0J2451 <br /> <br />Durango Pumoing Plant - Stage 1 <br /> <br />3. <br /> <br />13) Temperature; Determine by placing a thermometer in the concrete <br />at the placement. <br /> <br />14) Making and curing concrete test specimens in the field; ASTM C <br />3 I, except use the frequency of internal vibrators at 10,000 <br />revolutions per minute or greater. <br /> <br />15) Capping cylindrical concrete specimens: ASTM C 617. <br /> <br />16) Compressive strength of cylindrical concrete specimens; ASTM C <br />39 for cast cylinders and ASTM C 42 for cores. <br /> <br />Sampling Equipment <br /> <br />a. Provide sampling equipment for use by the Government as listed below: <br /> <br />I) Mechanical sampling devices for safely obtaining and handling <br />representative test samples of aggregates and other concrete <br />materials during batching and, at central mix plants, mechanical <br />sampling devices for safely obtaining representative concrete <br />samples from a point in the discharge stream as the concrete is <br />discharged from the mixers. <br /> <br />2) Ample and protected working space near the placement site and a <br />means for safely procuring and handling representative concrete <br />samples. <br /> <br />.~ <br /> <br />( <br /> <br />END OF SECTION <br /> <br />Cast-in-Place Concrete <br />03300 - 47 <br />