DE2433403

A control method for charging ready-mixed concrete additives batchwise which aims at keeping the slump of ready-mixed concrete within a certain range and making longer transportation by truck mixer possible without degrading the quality, where the slump of ready-mixed concrete is detected electrical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MATSUDA, TSUNEHISA, URAWA, SAITAMA, KITSUDA, TOSHIYUKI, MORIOKA, IWATE, HATTORI, KENICHI, MUSASHINO, TOKIO, NAKAGAWA, HIROMI, WAKAYAMA, WAKAO, MITSURU, SAGAMIHARA, KANAGAWA
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING PERFORMING OPERATIONS PHYSICS PREPARING CLAY PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL,e.g. PLASTER REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TRANSPORTING WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	A control method for charging ready-mixed concrete additives batchwise which aims at keeping the slump of ready-mixed concrete within a certain range and making longer transportation by truck mixer possible without degrading the quality, where the slump of ready-mixed concrete is detected electrically as a change in the mixing torque so that, when this detected value reaches a value set beforehand, a motor receives a control instruction to charge additives for adjusting slump into the ready-mixed concrete and so that the operating time of the motor for charging additives and the interval until control operation is reset may be adjusted with a timer.