Employing quicklime in stabilizing surface layers of the earth
OwnerJoe D. Teague, Paul J. Wrightinventors
Life of this patent
Estimating the term…
Abstract
This specification discloses method and apparatus for treating surface layers of the earth to obtain stabilization, build strength and permeability characteristics; characterized by slaking quicklime (CaO) in a mixing tank to form an elevated temperature, hydrated lime [Ca(OH).sub.2 ] slurry and working the resulting elevated temperature lime slurry into the surface of the earth at the local where the stabilization of the soil is to be achieved. This achieves a cost reduction, has greater reliability in obtaining materials, achieves better results, saves energy and extends the soil-stabilization season into cold weather previously considered prohibitive. Also disclosed are the details of preferred embodiments for admixing the unslaked lime.
Claims7
A method of treating top surface layers of the earth for forming a stabilized base of controlled strength, movement and water permeability comprising the steps of:
- a. admixing in a slurry mixing tank unslaked lime called quicklime and water to form a hot hydrated lime slurry at elevated temperature above ambient;
- and
- b. working the hot hydrated lime slurry before said hot hydrated lime slurry cools below ambient temperature and while said hot hydrated lime slurry is at a temperature above ambient into the top surface layers of the earth such that for the first time it is economically feasible that said surface layers are treated in situ with a hot lime slurry to obtain the desired strength and stabilization to allow stabilization even when the ambient temperature decreases to 40.degree. F. and lower.
Dependencies are inferred from the claim text.