Method for preparing concrete by use of multi-layer pan type mix

Details Method for preparing concrete by use of multi-layer pan type mix Method for preparing concrete by use of multi-layer pan type mix

1981-07-09

1983-09-13

Coe, Philip R.

Agitating

Mortar mixer type

Methods

366 15, 366 19, 366 40, 366 65, 366 67, B28C 516, B28C 704

Patent

active

044038631

ABSTRACT:
A method for producing concrete in a multi-layer pan type mixer comprising upper and lower mixers having upper and lower mixing tanks driven by separate motors and a discharge gate communicating the upper mixing tank with the lower mixing tank, said method comprising supplying sand, cement and primary mixing water to the upper mixing tank and performing primary mixing therein to obtain a mortar, discharging the mortar into the lower mixing tank, simultaneously supplying gravel and secondary mixing water to the lower mixing tank to disperse the gravel into the mortar, and performing secondary mixing therein.

REFERENCES:
patent: 1841100 (1932-01-01), Faber
patent: 1923151 (1933-08-01), Koehring
patent: 2015488 (1935-09-01), Manabe
patent: 2703703 (1955-03-01), Nargelovic
patent: 3580551 (1971-05-01), Speyerdorf

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