Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1988-07-27
1989-10-03
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
106 84, 405269, E02D 312
Patent
active
048712833
ABSTRACT:
Method of treating subsurface layers of the earth for controlling movement of subsurface water and building strength of the subsurface layers characterized by injecting at a plurality of predetermined depths and at a plurality of predetermined spaced-apart locations a lime-fly ash slurry consisting essentially of water, particulate hydrated lime and particulate fly ash; the particulate lime and fly ash being present as particulate solids and a proportion of from twenty-five percent by weight of the water to as much as two hundred percent by weight of the water when employed along. The particulate solids comprise lime and fly ash in proportions ranging from three parts lime to one part fly ash to one part lime to ten parts fly ash. The injection is carried out by pumping the slurry of one of the particulate solids and water through a jet slurry mixing apparatus for aspirating in the other dry particulate solid. Preferably the fly ash will be aspirated into a slurry of the lime in water. Injection occurs within less than ten minutes from admixture so as to obtain additional strength compared to conventional prior art processes. Minor amounts of additives may be employed to obtain desired properties. In particular embodiments there are disclosed the use of additional materials such as cement, attapulgite, sandy loam and bentonite. These additional materials may be employed in concentrations of twenty-five to two hundred percent by weight of the water and are in addition to the lime and fly ash in the slurry.
REFERENCES:
patent: 4233015 (1980-11-01), Teague et al.
patent: 4451180 (1984-05-01), Duval
patent: 4470727 (1984-09-01), Ritter
Transportation Research Circular, published by the Transportation Research Board, entitled State of the Art: Lime Stabilization; No. 180, Sep. 1976.
Woodbine Lines, Lime Slurry Pressure Injection Soil Stabilization System for Expansive Clays, vol. 2, No. 2, Sep. 1970.
Transportation Research Record No. 568, published by the Transportation Research Board, entitled, Swelling Soils, by Thompson et al., a printed publication constituting a substantial duplicate of the above identified speech.
Lime Stabilization Construction Manual, published by National Lime Association, Washington, DC, Third Edition, published 1969.
Lime Stabilization of Roads, Bulletin 323, published by National Lime Association, Washington DC, First Edition.
Lime Stabilization Construction, Bulletin 326, published by National Lime Association, Washington, DC, Sixth Edition, 1976.
Lime Stabilization Construction Manual, published by National Lime Association, Washington, DC, Fifth Edition, published 1972.
Lime Handling Application and Storage, published by National Lime Association, Bulletin No. 213, Copyright 1949.
Pressure Injection Lime Treatment of Swelling Soils by Thompson, et al., delivered as published speech to the 54th Annual Meeting, Transportation Research Board, Washington, DC, Jan., 1975.
Handbook for Railroad Track Stabilization Using Lime Slurry Pressure Injection, by Blacklock, et al., published Mar., 1977 and acknowledging at numerous pages therein the state of the art at various time periods prior.
Fails James C.
GKN Hayward Baker, Inc.
Mantooth Geoffrey A.
Taylor Dennis L.
Zobal Arthur F.
LandOfFree
Continuous mixing and injection of lime-fly ash slurry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous mixing and injection of lime-fly ash slurry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous mixing and injection of lime-fly ash slurry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-661189