Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Reexamination Certificate
1999-12-07
2001-07-24
Green, Anthony (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
C106S638000, C106S640000, C106S705000, C106S711000, C106S712000, C106S772000, C106S789000, C106S792000, C106S801000, C106S802000, C106S811000, C106S813000, C106S814000, C106S815000, C106S819000, C106S823000, C423S420200, C264S333000
Reexamination Certificate
active
06264740
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a new form of inorganic cementitious material which finds utility as a binder for aggregate. The invention also relates to a method of forming the cementitious material by mixing an inorganic material with either fresh or seawater, creating an exothermic reaction by which the inorganic material hardens. In some instances, aggregate is added prior to, subsequent to, or simultaneous with the addition of water to create a concrete-like material.
2. Description of the Related Art
Hydraulic cements are known, the most widely encountered being Portland Cement, in which an inorganic material is heat treated at high temperatures, generally in a kiln, to activate the cement. When subsequently mixed with water, this cement hardens. When aggregate is added to the cement, it is generally known as concrete.
The invention relates to a new type of cementitious material formed of inorganic substances that do not require the high temperature heat treatment associated with Portland Cement.
Ancient Egyptians described using block or mud brick to build many structures, such as scenes of mud bricking in the Rehkmire tomb at Sheikh abd el-Qurna area of Egypt. Other formulas for making structures or casting are detailed on the Famine Stele located on the island of Sehel, Egypt.
However, abandonment of this process would be applicable if this prior art does describe the use of a cementitious material created by adding sodium carbonate (also known as soda ash, natron, etc.) and one or more materials for the calcium carbonate group (including aragonite, limestone, calcite, marble, dolomite, etc.) which when mixed with water will harden. I have named this new type of cement Conch-krete.
The strength and final set of the product of this process depend on the combination of sodium carbonate, calcium carbonate and water. To achieve a long lasting set, additional water needs to be available to the product after the initial set, as the product absorbs water after the initial set that will increase the length of the set.
SUMMARY OF THE INVENTION
It is thus an object of the invention to provide a new type of inorganic cementitious material that will harden upon addition of water.
It is a further object of the invention to provide methods of using this new cementitious material as a binder for aggregate, to make bricks, blocks, cast stonework, cultured marble, retaining walls, pipe, grout, mortar, gunnite, stucco and similar or other products.
These and other objects of the invention will be more fully understood in connection with the detailed description of the embodiments of the invention.
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Green Anthony
Stevens Davis Miller & Mosher LLP
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