Process of making material for and constructing a road
OwnerJoseph F. Bosichinventor
Life of this patent
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Abstract
A process of making materials for road construction and other purposes includes separating water from oil well drilling mud or other waste material sludge to form a partially dried sludge. The partially dried sludge is subjected to heat to further dry the sludge. The dried sludge is combined with an open cell aggregate or sand and caustic soda in a pug mill and ground to form relatively small particles. The small particles are expanded to a size which is at least 2 to 10 times the original size of the particles. When a road is to be built, the expanded particles are mixed with asphalt to form a product. This product has a thermal conductivity of approximately 0.36 B.t.u./(hr.)(sq.ft.) (deg.F./ft.). The product is then deposited over frozen and/or unfrozen ground during the construction of a road.
Claims12
A process of making materials for and constructing a road over frozen ground, said process comprising separating water from waste material sludge to form a partially dried sludge, mixing the partially dried with caustic soda, forming a solid body of material by heating the mixture of sludge and caustic soda, grinding the body of material to form particles of a first size, the particles to a second size which is at least 2 to 10 times as great as the first size, mixing the particles of a size with asphalt to form a product, and depositing the over frozen ground to at least partially form a road.
A process of making lightweight material from waste material sludge said process comprising separating water from the waste material sludge to form a partially dried sludge, mixing the partially dried sludge with caustic soda, forming a solid body of material by heating the mixture of sludge and caustic soda, grinding the solid body of material to form particles of a first size, and expanding the particles to a second size which is at least 2 to 10 times as great as the first size.
Dependencies are inferred from the claim text.