A permeable pavement and cured fiber composition and a related method are provided. The permeable pavement composition includes a quantity of pavement material, and a quantity of cured carbon fiber composite material (CCFCM) configured to be added to the pavement material to produce a reinforced composition having improved characteristics. An example of pavement material includes a pervious concrete material. The method includes providing a quantity of pavement material, and adding a quantity of cured carbon fiber composite material to the pavement material to produce a reinforced composition having improved characteristics.

A method for preparing a carbonated mineral for use in cement is provided; wherein a mineral component with a (CaO+MgO)/SiO.sub.2 weight ratio of 1.2 to 5.0 is ground to a powder; mixed with water to form a paste; the paste is placed in a reactor in an atmosphere containing CO.sub.2; the paste is carbonated in the reactor; and the resulting material is dried to constant weight; or the mineral component is ground to a Blaine fineness between 3000 cm2/g and 10000 cm2/g to obtain a powder; during grinding a CO2 rich gas is injected so that the component carbonates; the powder is mixed with water at a weight ratio between 0.3 and 1.5 to obtain a paste, or pre-humidified by adding water at a weight ratio between 0.03 and 0.2; the resulting material is dried to constant weight at 60-85 C.; and the resulting material is deagglomerated and sieved.

A method for preparing a carbonated mineral for use in cement is provided; wherein a mineral component with a (CaO+MgO)/SiO.sub.2 weight ratio of 1.2 to 5.0 is ground to a powder; mixed with water to form a paste; the paste is placed in a reactor in an atmosphere containing CO.sub.2; the paste is carbonated in the reactor; and the resulting material is dried to constant weight; or the mineral component is ground to a Blaine fineness between 3000 cm2/g and 10000 cm2/g to obtain a powder; during grinding a CO2 rich gas is injected so that the component carbonates; the powder is mixed with water at a weight ratio between 0.3 and 1.5 to obtain a paste, or pre-humidified by adding water at a weight ratio between 0.03 and 0.2; the resulting material is dried to constant weight at 60-85 C.; and the resulting material is deagglomerated and sieved.

The invention is directed to kits, compositions, tools and methods comprising a cyclic industrial process to form biocement. In particular, the invention is directed to materials and methods for decomposing calcium carbonate into calcium oxide and carbon dioxide at an elevated temperature, reacting calcium oxide with ammonium chloride to form calcium chloride, water, and ammonia gas; and reacting ammonia gas and carbon dioxide at high pressure to form urea and water, which are then utilized to form biocement. This cyclic process can be achieved by combining industrial processes with the resulting product as biocement. The process may involve retention of calcium carbonate currently utilized in the manufacture of Portland Cement.

The invention is directed to kits, compositions, tools and methods comprising a cyclic industrial process to form biocement. In particular, the invention is directed to materials and methods for decomposing calcium carbonate into calcium oxide and carbon dioxide at an elevated temperature, reacting calcium oxide with ammonium chloride to form calcium chloride, water, and ammonia gas; and reacting ammonia gas and carbon dioxide at high pressure to form urea and water, which are then utilized to form biocement. This cyclic process can be achieved by combining industrial processes with the resulting product as biocement. The process may involve retention of calcium carbonate currently utilized in the manufacture of Portland Cement.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder with sterols.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder with sterols.

Crumb Rubber augmented masonry blocks including cement, aggregate, water, and crumb rubber. Crumb rubber is extracted from scrape tires after being processed and then mixed in specified percentages with aggregate, cement and water. In the present disclosure sand, which is used in the formation of conventional blocks, is replaced with crumb rubber to produce a sand-free masonry block containing crumb rubber. The developed crumb rubber masonry blocks satisfied the ASTM non-load bearing requirements in addition to satisfying the water absorption test.

Crumb Rubber augmented masonry blocks including cement, aggregate, water, and crumb rubber. Crumb rubber is extracted from scrape tires after being processed and then mixed in specified percentages with aggregate, cement and water. In the present disclosure sand, which is used in the formation of conventional blocks, is replaced with crumb rubber to produce a sand-free masonry block containing crumb rubber. The developed crumb rubber masonry blocks satisfied the ASTM non-load bearing requirements in addition to satisfying the water absorption test.

Methods and an associated system for processing unhardened concrete are disclosed. With these methods, the porosity of the unhardened concrete is significantly increased to decrease the strength so much that it can be easily broken up for sale or reuse. In at least one embodiment, the method includes adding a large volume of foam to the returned unhardened concrete and then mixing the foam with the returned concrete in the ready-mix concrete truck or other concrete mixing devices at any location including the jobsite, enroute to the concrete plant, or at the concrete plant. Through the mixing of foam with the returned concrete, the hydrated cement and aggregate particles are separated by large volumes of air voids, which significantly increase the porosity and dramatically reduce the strength of the returned concrete. The treated concrete is discharged and allowed to solidify in this weakened state, after which it is easily broken into loose particulate material that can be sold or reused.