Method of fabrication of construction materials from industrial solid waste
AssigneeMaterials and Electrochemical Research (MER) Corporation
InventorsMagdi M. Nasrallah, Raouf O. Loutfy
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Abstract
A low-pressure method for producing construction materials, such as blocks, bricks or slabs, utilizing high percentages of waste cement dust in admixture with additive material capable of effectively neutralizing the high lime content and agglomerating the extremely fine particles of the cement dust upon blending of the admixture with water. The resulting blend may simply be cast in molds of various shapes and sizes and cured under normal atmospheric pressure conditions into a hardened construction material exhibiting high strength, light weight and high thermal insulation.
Claims24
A low-pressure method for producing high-strength, light-weight, low-thermal conductivity construction material of a desired size and shape from cement dust, comprising the steps of:
- (a) preparing a dry mix consisting essentially of from about 70 to about 97 weight percent cement dust and from about 3 to about 30 weight percent additive material, said cement dust being characterized by high lime content and extremely fine particle size, and said additive material being capable of effectively neutralizing the high lime content and agglomerating the extremely fine particles of said cement dust upon addition of water;
- (b) blending said dry mix with a sufficient amount of water so as to transform said dry mix into a clay-like thixotropic blend;
- (c) forming said blend into the desired size and shape of the construction material being produced;
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- (d) curing the formed blend under normal atmospheric pressure conditions into a hardened construction material.
Dependencies are inferred from the claim text.