Precautions in Transporting of Concrete:

The subsequent precautions should be observed during transporting of concrete from the mixing place.

(a) While water is added to cement, the procedure of hydration starts and with the passage of time, the cement-water paste starts solidifying thus making concrete stiffer. Concrete should be transported as fast as possible to the formwork within the initial setting time of cement.

(b) The procedure of mixing, transporting, placing and compacting concrete should not take more than 90 minutes in any case.

(c) No water shall be lost from the mix during transportation.

(d) The concrete combine should be protected from drying in hot weather and from rain during transport from the place of mixing to the position of placing.

(e) The price of transportation should be as low as probable.

(f) Segregation of concrete should be avoided under all circumstances.

Ready Mixed Concrete, in that the segregation is observed, should not be placed in any case.

(g) The concrete shall be kept agitated in truck mixer in order to avoid it from becoming stiff if more time is likely to be spent during transportation.

(h) The permissible time of transport of concrete should be determined within the laboratory.