Agitating – Mortar mixer type – Methods
Patent
1992-12-22
1994-06-14
Jenkins, Robert W.
Agitating
Mortar mixer type
Methods
366152, 366338, B28C 704
Patent
active
053204247
ABSTRACT:
This invention relates to apparatus for producing and delivering a rapidly setting composition and method of delivering a rapid setting cementitious grout. The rapidly setting composition comprises a first interactive component and a second interactive component. The first component comprises a retarded cementitious grout and the second is a gelling agent therefor, the rate of addition of the gelling agent being selected so as to control the rate of set of the deliverable composition. The particular apparatus includes means for supplying the gelling agent through an auxiliary pipeline to the main supply pipeline and means for monitoring the flow rate of the first component through the main supply line, means for monitoring the flow rate of the gelling agent through the auxiliary supply line, and means for adjusting the flow rate of the gelling agent to reduce difference between the monitored value and a reference value. The method is characterized by the steps of monitoring the flow rate of the grout through the main supply pipeline and monitoring the flow rate of the gelling agent through the auxiliary pipeline and by comparing the monitored flow rate of the gelling agent with a reference flow rate selected according to the predetermined rate of set of the grout including the gelling agent, and adjusting the flow rate of the gelling agent to eliminate any difference between the monitored and reference values.
REFERENCES:
patent: 3584977 (1971-06-01), Coleman
patent: 3700140 (1972-10-01), Harvey
patent: 4019653 (1977-04-01), Scherer
patent: 4117547 (1978-09-01), Mathis
patent: 4209258 (1980-06-01), Oakes
Annett Martin F.
France Barry
Powell John R.
FOSROC International Ltd.
Jenkins Robert W.
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