Cement slurries are prepared that comprise water, a hydraulic cement, particles of an oil-absorbent particles and non-swellable hydrophobic particles. The particles are present in an amount sufficient to alter a property of a non-aqueous drilling fluid. The cement slurry is placed in a subterranean well, whereupon the slurry contacts residual drilling fluid on casing and formation surfaces. The oil-absorbent particles and hydrophobic particles in the cement slurry may reduce the mobility of the drilling fluid, thereby improving zonal isolation.

Cement slurries are prepared that comprise water, a hydraulic cement, particles of an oil-absorbent particles and non-swellable hydrophobic particles. The particles are present in an amount sufficient to alter a property of a non-aqueous drilling fluid. The cement slurry is placed in a subterranean well, whereupon the slurry contacts residual drilling fluid on casing and formation surfaces. The oil-absorbent particles and hydrophobic particles in the cement slurry may reduce the mobility of the drilling fluid, thereby improving zonal isolation.

A lightweight composite composition includes a plurality of lightweight particles including a volume of at least about 10% of a total volume of the lightweight composite composition. The plurality of lightweight particles includes an average bulk density within a range from about 0.001 g/cc to about 1.5 g/cc and an average particle size within a range from about 0.01 microns to about 90 mm. Methods of manufacturing a lightweight composite composition are provided.

An extrudable cement-based material is formed from a mixture that includes cement in the range of about 40 to 90% by wet weight percent, a lightweight expanded aggregate in the range of about 10 to 60% by wet weight percent, a secondary material in the range of about 0.1 to 50% by wet weight percent, a reinforcement fiber in the range of about 1 to 20% by wet weight percent, a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent, a retarder in the range of about 0.1 to 8% by wet weight percent, and water in the range of 10 to 60% of a total wet material weight.

An extrudable cement-based material is formed from a mixture that includes cement in the range of about 40 to 90% by wet weight percent, a lightweight expanded aggregate in the range of about 10 to 60% by wet weight percent, a secondary material in the range of about 0.1 to 50% by wet weight percent, a reinforcement fiber in the range of about 1 to 20% by wet weight percent, a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent, a retarder in the range of about 0.1 to 8% by wet weight percent, and water in the range of 10 to 60% of a total wet material weight.

The invention relates to a composite heat insulation system, comprising an insulating layer, optionally a reinforcing layer, which is applied to the insulating layer, and a cover layer, which is applied to the insulating layer or, if present, to the reinforcing layer, characterized in that the cover layer contains composite particles, wherein the composite particles contain at least one organic polymer and at least one inorganic solid, wherein the weight percentage of inorganic solid is 15 to 40 wt %, with respect to the total weight of organic polymer and inorganic solid in the composite particle.

The invention relates to a composite heat insulation system, comprising an insulating layer, optionally a reinforcing layer, which is applied to the insulating layer, and a cover layer, which is applied to the insulating layer or, if present, to the reinforcing layer, characterized in that the cover layer contains composite particles, wherein the composite particles contain at least one organic polymer and at least one inorganic solid, wherein the weight percentage of inorganic solid is 15 to 40 wt %, with respect to the total weight of organic polymer and inorganic solid in the composite particle.

According to aspects of the present disclosure, a composition is disclosed, which can be utilized to construct a retention structure, e.g., for use with hardscape such as pavers, tile, stone, and other building materials. The composition is a mixture of a cement component (e.g., Portland cement), a sand component, a gravel component, a silica fume component, and fiber component, the above-components mixed in varying ratios. When the cement component, sand component, gravel component, silica fume component, and fiber component are mixed in an effective amount, combined with a water component, and applied against a hardscape, the composition, once cured, defines a retention structure that abuts to, but is not adhered to the hardscape.

According to aspects of the present disclosure, a composition is disclosed, which can be utilized to construct a retention structure, e.g., for use with hardscape such as pavers, tile, stone, and other building materials. The composition is a mixture of a cement component (e.g., Portland cement), a sand component, a gravel component, a silica fume component, and fiber component, the above-components mixed in varying ratios. When the cement component, sand component, gravel component, silica fume component, and fiber component are mixed in an effective amount, combined with a water component, and applied against a hardscape, the composition, once cured, defines a retention structure that abuts to, but is not adhered to the hardscape.

Described herein is a method for preparing decorative concrete top ping which overcomes the limitations associated with epoxy Terrazzo floors. Specifically, the decorative concrete topping mixture described herein has a low crack potential, high strength and durability, much longer working time, thereby allowing for the material to be mixed in larger quantities and simplifying application. A binder composition made of Portland cement and pozzolanic materials is mixed with an decorative aggregate and other additives before pumping the concrete topping mixture onto a subfloor and allowing the concrete topping mixture to cure.