Learn the Process of Placing of Concrete

While Placing the Concrete care should be taken to see that it is not segregated, passes through the spaces between the reinforcement and fill the Form completely. This model shown placing of concrete. The stability of the form work is one of the important aspect to be checked before placing the concrete. Any gaps between the shutter plates are to be sealed and cover blocked properly placed.

The concrete shall be laid continuously to prevent formation of cold joints and irregular surfaces. The concrete shall be placed against the preceding layers while casting the slab. The Height of the foil while place concrete shall not be more than one meter. Chutes should be used for height more than one meter. Proper care shall have to be taken to ensure that the concrete passes through the constructed reinforcement in  beams and beam column junction.

The concrete may segregate it due to the obstruction by strips while depositing in columns. It shall be ensured that no major obstruction to the concrete. Concrete from pans it to be slowly put in place. Throwing concrete from the Pan from a shoulder height causes segregation. It should not be deposited in front of the vibrator as it moves the concrete away. The concrete should be placed within 30 to 45 minutes from the time it is discharged from the mixer. Any movement of people should not be allowed  till concrete gets stiffen.

Summary of Placing of concrete:

Care should be taken before placing concrete

Formwork should be stable.; gaps if any should be sealed

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