An admixture for mineral binder compositions, in particular an after-treatment agent for mineral binder compositions, including at least one water-absorbing substance and at least one shrinkage reducer.

An admixture for mineral binder compositions, in particular an after-treatment agent for mineral binder compositions, including at least one water-absorbing substance and at least one shrinkage reducer.

Cement compositions that can capture carbon dioxide and related methods are generally described.

Cement compositions that can capture carbon dioxide and related methods are generally described.

A soil solidification material based on solid waste and bioenzyme, and a preparation method thereof are disclosed. The soil solidification material is composed of the following components in parts by weight: recycled aggregate 22-35 parts, steel slag 20-30 parts, high-calcium fly ash 16-24 parts, the bioenzyme 5-15 parts, an inorganic adsorbent 10-18 parts, an organic adsorbent 8-20 parts, industrial waste gypsum 25-35 parts, an activator 20-30 parts, sodium citrate 1-3 parts, and slaked lime 0.02-0.2 parts. The present disclosure adopts the recycled aggregate, the steel slag, the industrial waste gypsum and the high-calcium fly ash as the main components of the soil solidification material to reduce the cost. The soil solidification material of the present disclosure prepared by optimizing the proportion is capable of significantly improving the engineering properties of the soil or the mixed contaminated soil, and has significant economic and environmental benefits.

Provided are a concrete structure repaired and reinforced using a textile grid reinforcement and a highly durable inorganic binder and a method of repairing and reinforcing the same, capable of easily repairing and reinforcing an old concrete structure by adhering a textile grid reinforcement, which is coated with a coating material to improve adhesiveness, to the old concrete structure and by adhering a textile grid reinforcement selectively using a highly durable inorganic binder having chloride penetration resistance performance or chemical resistance performance according to a use environment and a reinforcement purpose, that is, by adhering a textile grid reinforcement using an inorganic binder such as cement in place of an organic adhesive. Further, the concrete structure has excellent refractory performance because both the textile grid reinforcement such as a carbon fiber and the highly durable inorganic binder are incombustible materials, and can be effectively applied to reinforcing facilities exposed to the danger of fire.

A process of manufacturing NH2-MIL-125(Ti) for use in mitigating ingress of chlorine ions in concrete, comprising dissolving 2-amino-benzene dicarboxylic acid in a 1:1 ratio of dimethylformamide and methanol, adding a titanium (IV) isopropoxide to the mixture at 150° C. with constant stirring to form NH2-MIL-125(Ti), submerging the NH2-MIL-125(Ti) in dichloromethane for about 3 hours and separating the NH2-MIL-125(Ti). NH2-MIL-125(Ti) produced is activated and ready for use in cement-based concrete structures. NH2-MIL-125(Ti) is enabled to reduce the ingress of chlorine ions in concrete by at least 20%.

Gypsum panels and methods of making gypsum panels are provided. A method of making a gypsum panel includes combining gypsum stucco and a halide salt sequestration agent with water to form a gypsum slurry and setting the gypsum slurry to form at least a portion of a gypsum core, wherein the halide salt sequestration agent is present in an amount effective to sequester at least a portion of halide salt present in the gypsum stucco. A gypsum panel includes a gypsum core that comprises set gypsum and a halide salt sequestration agent, wherein the halide sequestration agent sequesters at least a portion of halide salt present in the gypsum core.

A process for immobilizing hazardous waste includes mixing the hazardous waste with a non-swelling clay, a cementitious binder and, optionally, water, and allowing the resulting mixture to set to an immobilized waste material. The process can also include dispersing the hazardous waste in the non-swelling clay to form a dry mixture, mixing the cementitious binder and, optionally, water with the dry mixture to produce a plastic mixture, and allowing the plastic mixture to set to the immobilized waste material.

Gypsum panels and methods of making gypsum panels are provided. A method of making a gypsum panel includes combining gypsum stucco and a halide salt sequestration agent with water to form a gypsum slurry and setting the gypsum slurry to form at least a portion of a gypsum core, wherein the halide salt sequestration agent is present in an amount effective to sequester at least a portion of halide salt present in the gypsum stucco. A gypsum panel includes a gypsum core that comprises set gypsum and a halide salt sequestration agent, wherein the halide sequestration agent sequesters at least a portion of halide salt present in the gypsum core.