Concrete preparation and technical quality requirements for press-poured pile construction: (1) Concrete preparation for construction: This project uses commercial concrete. The site quality member accepts the performance indicators and grading of concrete on the scene. (2) Technical quality requirements: A. The supply station must provide the Quality Certificate of Ready-mixed Concrete and the concrete grading list;
(1) Concrete preparation for construction:
This project uses commercial concrete. The site quality member accepts the performance indicators and grading of concrete on the scene.
(2) Technical quality requirements:
A.The supply station must provide "ready-mixed concrete quality Certificate" and concrete grading list;
B.The performance indicators of commercial concrete are as follows:
Coarse aggregate size:5～25mm
Taken down fall C:180mm～220mm
Initial setting time: not less than6hours
C.The concrete of the commodity entering the site should have good workability and fluidity, and the slump loss should be able to meet the perfusion requirements.
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