A variety of systems, methods and compositions are disclosed, including, in one method, a method of cementing may comprise: providing a cement composition comprising: a hydraulic cement comprising Portland cement in an amount of about 50% by weight of hydraulic cement or less, water, and a phosphorylated amino polycarboxylic acid cement retarder; placing the cement composition in a wellbore; and allowing the cement composition to set. A cement composition, the composition comprising: a hydraulic cement comprising Portland cement in an amount of about 50% by weight of hydraulic cement or less; water; and a phosphorylated amino polycarboxylic acid cement retarder.

A fire-resistant two-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid and phosphonic acids, at least one plasticizer, and water. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A fire-resistant two-component system, which is ready-for-use, can be used for a fire-resistant chemical fastening of anchors and post-installed reinforcing bars in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone.

A fire-resistant two-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid and phosphonic acids, at least one plasticizer, and water. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A fire-resistant two-component system, which is ready-for-use, can be used for a fire-resistant chemical fastening of anchors and post-installed reinforcing bars in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone.

A construction material, a hydrophobic, optionally multi-cellular, inorganic particulate material for use in the construction material, for example, to improve the crush strength and/or stability of the construction material, a method of making the construction material, constructions comprising the construction material, and a method of improving the stability of a construction material.

A construction material, a hydrophobic, optionally multi-cellular, inorganic particulate material for use in the construction material, for example, to improve the crush strength and/or stability of the construction material, a method of making the construction material, constructions comprising the construction material, and a method of improving the stability of a construction material.

A concrete block wet cast ready mix composition preferably includes ground recycled glass, river sand, river gravel, cement, soap, water and a water proofing substance. The river gravel preferably includes natural stone, granite, limestone and domite. The cement is preferably an off white cement. The soap is preferably laundry detergent. The water proofing substance is preferably Grace Optec Admix waterproofing. The wet cast composition is preferably mixed in the following manner. The ground recycled glass, the river sand and the river gravel are mixed together to form an aggregate mix. The cement is combined with the aggregate mix to form a cement aggregate mix. Water is added to the cement aggregate mix to form a wet aggregate mix. Finally, the soap and the waterproofing substance are combined with the wet aggregate mix. The wet cast composition is now ready to be poured into concrete block molds or poured as cast concrete.

A concrete block wet cast ready mix composition preferably includes ground recycled glass, river sand, river gravel, cement, soap, water and a water proofing substance. The river gravel preferably includes natural stone, granite, limestone and domite. The cement is preferably an off white cement. The soap is preferably laundry detergent. The water proofing substance is preferably Grace Optec Admix waterproofing. The wet cast composition is preferably mixed in the following manner. The ground recycled glass, the river sand and the river gravel are mixed together to form an aggregate mix. The cement is combined with the aggregate mix to form a cement aggregate mix. Water is added to the cement aggregate mix to form a wet aggregate mix. Finally, the soap and the waterproofing substance are combined with the wet aggregate mix. The wet cast composition is now ready to be poured into concrete block molds or poured as cast concrete.

The present invention provides a dentinal tubule occlusion material excellent in terms of initial degree of dentinal tubule occlusion, resistance of dentinal tubule occlusion to acids, handling properties, and storage stability. The present invention relates to an one-pack type dentinal tubule occlusion material comprising fluorapatite particles (A) having an average particle diameter of 0.6 to 10 m, inorganic particles (B) having an average particle diameter of 0.6 to 10 m and reactive with water to form apatite, and a non-aqueous dispersant (C).

The present invention provides a dentinal tubule occlusion material excellent in terms of initial degree of dentinal tubule occlusion, resistance of dentinal tubule occlusion to acids, handling properties, and storage stability. The present invention relates to an one-pack type dentinal tubule occlusion material comprising fluorapatite particles (A) having an average particle diameter of 0.6 to 10 m, inorganic particles (B) having an average particle diameter of 0.6 to 10 m and reactive with water to form apatite, and a non-aqueous dispersant (C).

Provided are a concrete manufacturing method capable of preventing neutralization of concrete and oxidation of a reinforcing rod in reinforced concrete, and a method for manufacturing a reinforced concrete structure using the same. The concrete manufacturing method uses nitrogen dissolved water and is characterized by including: a step of generating nitrogen dissolved water by injecting nitrogen gas into water to replace oxygen and carbon dioxide dissolved in the water with nitrogen; and a step of generating a ready-mixed concrete by kneading the nitrogen dissolved water, cement, an aggregate, and an admixture. The method for manufacturing a reinforced concrete structure is characterized by forming a reinforced concrete structure using a ready-mixed concrete manufactured by a concrete manufacturing method using nitrogen dissolved water.