To meter a mass of aggregate and water with a sufficient degree of accuracy even if a whole amount can not be metered using a water immersion metering method because the aggregate amount is large.
A metering apparatus 1 of aggregate and water is provided with a metering tank 4 having a metering tank main body 2 and a pair of bottom lids 3a, 3b disposed so as to be able to open and close and capable of closing a bottom opening with water-tightness, load cells 5 as a first mass metering means for metering a mass of the metering tank, and an ultrasonic sensor 7 as a volume metering means for metering a volume of a fine aggregate immersed in water contained in a space 6 containing the fine aggregate immersed in water as a space containing an aggregate immersed in water formed in the metering tank 4. The metering tank 4 is suspended and held on a trestle 10 with three load cells 5 in a stable state of three point support, and also the ultrasonic sensor 7 is suspended and held on the trestle 10.
CHIKAMATSU RYUICHI
SAITO KENZO
YOSHIDA MITSUHIRO
TOKUNAGA NAOKI
WADA SATOO
OKABE CO LTD
SANWA SANGYO KK
| JP2000084921A | 2000-03-28 | |||
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