Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1977-09-06
1978-11-21
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
106 90, 166293, E21D 2002, C04B 702
Patent
active
041260090
ABSTRACT:
In an inorganic cement grouting system for use in anchoring a reinforcing member such as a rock bolt in a hole, e.g., in a mine roof, by the reaction of the mixed components of the system so as to form a hardened grout around the reinforcing member, which system has the following separate components: (1) a slush or sludgy mass of a particulate inorganic cement that sets by hydration and a liquid which is nonreactive therewith, preferably a hydrocarbon, and (2) water containing a particulate aggregate such as sand, a small amount of polyethylene oxide and/or polyacrylamide in the aggregate-containing water component not only thickens the water to prevent its loss from the hole, but acts as a lubricant to facilitate insertion of the reinforcing member while permitting the resulting grout to develop an acceptable shear strength.
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patent: 3428121 (1969-02-01), Harnsberger
E. I. Du Pont de Nemours and Company
Taylor Dennis L.
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