A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (soluble in water). The coating absorbs water, but particles are too small to form significant voids. Water is absorbed into the concrete mix in far greater proportions (e.g. w/c ratio over 0.5) improving workability, doubling workability time, and improving ultimate compressive stress (strength).

A process for producing cement includes combining a cement precursor and a wax, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, grinding the cement precursor and the wax to yield cement grains coated with the wax. A cement includes cement powder grains and a coating of wax on the Portland cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax. A process for making cementitious material includes combining a cement with water to yield a slurry, wherein the cement includes cement powder grains and a coating of wax on the cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, and allowing the slurry to set.

A process for producing cement includes combining a cement precursor and a wax, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, grinding the cement precursor and the wax to yield cement grains coated with the wax. A cement includes cement powder grains and a coating of wax on the Portland cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax. A process for making cementitious material includes combining a cement with water to yield a slurry, wherein the cement includes cement powder grains and a coating of wax on the cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, and allowing the slurry to set.

A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (soluble in water). The coating absorbs water, but particles are too small to form significant voids. Water is absorbed into the concrete mix in far greater proportions (e.g. w/c ratio over 0.5) improving workability, doubling workability time, and improving ultimate compressive stress (strength).

A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (soluble in water). The coating absorbs water, but particles are too small to form significant voids. Water is absorbed into the concrete mix in far greater proportions (e.g. w/c ratio over 0.5) improving workability, doubling workability time, and improving ultimate compressive stress (strength).

A polymer concrete composition has a base composition including a first isocyanate component and a first isocyanate reactive component, and one or more pre-coated aggregates that each has a base substrate and a two-component reaction product polymeric coating on an outer surface of the base substrate. The polymeric coating is the reaction product of a second isocyanate component and a second isocyanate-reactive component.

A polymer concrete composition has a base composition including a first isocyanate component and a first isocyanate reactive component, and one or more pre-coated aggregates that each has a base substrate and a two-component reaction product polymeric coating on an outer surface of the base substrate. The polymeric coating is the reaction product of a second isocyanate component and a second isocyanate-reactive component.

A composite cementitious feedstock includes mineral rock agglutinates, super absorbent polymer (SAP) particles, cement particles, and a binder. Each of the agglutinates has irregular surface regions and cavities originating at the irregular surface regions. At least a portion of the SAP particles and cement particles are disposed on the irregular surface regions and in the cavities. The binder coheres the agglutinates, SAP particles, and cement particles.

The Present disclosure is related to hot-mix asphalt (“HMA”) which open new price/performance areas to asphalt cement concrete (“ACC”) pavement. Equivalent-performing pavement may be made at lower cost, or higher-performing pavement may be made at equivalent-to-prior-art cost. The amendments, recycled asphalt pavement (“RAP”, and including recycled asphalt shingles [“RAS”]), and reinforcing fiber (aramid fiber) may be adjusted as described herein to achieve a desired price/performance target.

The Present disclosure is related to hot-mix asphalt (“HMA”) which open new price/performance areas to asphalt cement concrete (“ACC”) pavement. Equivalent-performing pavement may be made at lower cost, or higher-performing pavement may be made at equivalent-to-prior-art cost. The amendments, recycled asphalt pavement (“RAP”, and including recycled asphalt shingles [“RAS”]), and reinforcing fiber (aramid fiber) may be adjusted as described herein to achieve a desired price/performance target.