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US 5,951,751 AGranted
Flowable fill composition and method
AssigneeChemical Lime Company
InventorsDevon Williams, Michael Eliasen, Robert A. Derks
Life of this patent
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Abstract
A flowable fill composition is shown which is prepared by mixing together a lime component, a pozzolanic component, aggregate material and water. The composition has a set compressive strength after 28 days of 2000 psi or less and is characterized by the substantial absence of cement or other self-setting adhesive components.
Claims11
A flowable fill composition, comprising:
- from about 1 to 15% by weight of a lime component;
- from about 10 to 45% by weight of a pozzolanic material comprising a reactive siliceous aluminous component;
- from about 20 to 95% by weight of a crushed rock or soil aggregate material;
- from about 10 to 20% by weight water;
- wherein all weight percentages are percent by weight of the total flowable fill composition including water;
- and
- wherein the composition is a premixed flowable liquid;
- the composition being further characterized as having a compressive strength of 2000 psi or less and by the substantial absence of cement or other self-setting adhesive components.
5 more elements
A method of producing and placing a flowable fill material in an opening in the earth, the method comprising the steps of:
- preparing a flowable fill material by mixing together lime, fly ash, aggregate and water in portions of approximately 5 to 15% by weight lime, 10 to 45% by weight fly ash, 50 to 70% by weight aggregate and 10 to 20% by weight water and placing the flowable fill material so produced in the opening in the earth while it is still in the flowable state;
- and
- wherein the flowable fill material so produced is characterized by the substantial absence of cement or other self-setting adhesive components.
Dependencies are inferred from the claim text.