(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.

Shanghai Qiangqiang Foundation Engineering Co., LTD. 's business covers foundation pit engineering, pile foundation engineering, land and waterFoundation treatment , slope treatment and other engineering fields. Around" Excellent technology, reliable process ", construction fast "technical requirements, Is to provide customers with land, water foundation engineering technical consultation, construction services and other comprehensive solutions of the entity enterprise. Contact Number:400-1002850