This present invention relates to compositions to improve concrete using biochemical-producing microbes and/or byproducts synthesized by the microbes. The invention also relates to methods for enhancing the performance of the concrete with said microbial strains and/or their byproducts.

A carbonation-resistant cementitious blend containing cement, an expandable agent present, a dispersion agent, a fluid loss additive, a defoamer, and an olive waste. Concrete samples made therefrom and methods of producing such concrete samples are also specified. The addition of olive waste provides enhanced durability (carbonation resistance) and maintains mechanical strength (e.g. compressive strength, tensile strength) after exposure to CO.sub.2 and/or brine. The resulting concretes are suitable cementing material for oil and gas wells as well as wellbores for geologic carbon sequestration.

A liquid additive composition comprising a particulate material, an organic carrier fluid, a viscosifier, and an alcohol alkoxylate surfactant; wherein the particulate material is substantially insoluble in the organic carrier fluid; wherein the particulate material comprises a water-interactive material and/or a water-insoluble material; wherein the organic carrier fluid comprises a glycol and/or a glycol ether; and wherein the viscosifier comprises amorphous silica. A method comprising (a) contacting a particulate material, an organic carrier fluid, a viscosifier, and an alcohol alkoxylate surfactant to form a mixture; and (b) agitating the mixture to form the liquid additive composition.

TA geopolymer foam having: from 50% to 90% by mass of pozzolanic material polymerized relative to a total mass of the foam; from 0.01% to 2%, by mass of the at least one surfactant relative to the total mass of said foam; and from 1% to 20% by mass of fibers with lengths of between 5 and 1500 μm relative to the total mass of said foam. A process and a composition for manufacturing the foam, as well applications of the foam, are also disclosed. Finally, the invention relates to a kit comprising said composition for the manufacture of said foam, as well as a pozzolanic material.

Preparation in liquid or creamy or powder form to be used for materials for industrial use such as refractory products, products cementitious, products for buildings, aggregates, binders of various kinds, plastics, natural and synthetic rubber, polymers, bitumen, bituminous conglomerates, active substances that evaporate or dissipate quickly, belonging to insecticides, biocides, pesticides, pesticides, etc., which are made from animal mixtures of oils or fats and at least one base dissolved in water, with percentages by weight of components comprised respectively between 70% and 99.9% of oil or mixture of oils, 0.1% and 10% of base and 0% and 20% of water.

The present application relates to a concrete pre-mix composition comprising a cementitious material and a plurality of conductive carbon microfibers mixed with said cementitious material, where said conductive carbon microfibers are present in the concrete pre-mix composition in an amount such that, when said concrete pre-mix composition is hydrated to form concrete and cured, the conductive carbon microfibers are dispersed in the cured concrete in an amount of 0.75% to 2.00% of total mass of the concrete. The present application further relates to a concrete composition, a method of producing an electrically conductive concrete composition, an electrically conductive cured concrete form, and a system for heating pavement.

Cured cements, cement slurries, and methods of making cured cement and methods of using cement slurries are provided. The method of making a modified cement slurry includes adding particles comprising carbon nanotube sponges disposed on sacrificial templates to a cement slurry to form the modified cement slurry and allowing the sacrificial templates to disintegrate, thereby leaving the carbon nanotube sponges dispersed throughout the modified cement slurry.

The invention discloses an environment-friendly cement self-repairing system, and its preparation method and application. The preparation method comprises the following steps: adding a shell curing agent into deionized water to prepare solution 1, adding an inorganic nano emulsifier into deionized water, ultrasonically dispersing, then adding polysaccharide-shell, and uniformly stirring to obtain emulsion polymerization aqueous phase; adding epoxy diluent into epoxy resin, and uniformly stirring; obtaining an emulsion polymerization oil phase; mixing the emulsion polymerization aqueous phase and emulsion polymerization oil phase, and stirring to obtain uniform emulsion; dropping the uniform emulsion into solution drop by drop by using pendant drop method, stirring until the droplets are shaped, then filtering, washing with deionized water, and drying to obtain self-repairing capsules; next, mixing with an environment-friendly curing agent to obtain an environment-friendly cement self-repairing system. The environment-friendly cement self-repairing system is green, nontoxic and harmless, has strong water absorption, can block tiny cracks by volume expansion when contacts with water, thus further enhances the cement self-repairing effect.

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries have, among other attributes, an extended thickening time, leading to improved retardation, flowability, and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry includes water, microfine cement material, and bisphenol-F diglycidyl ether resin.

The invention relates to a composition for forming a casting mold, the composition containing heat-resistant inorganic particles; a waterglass-based binder; a surfactant; a silicon-containing compound; activated carbon powder and grain; and water; and the silicon-containing compound contains at least one of metal silicon and ferrosilicon.