The present invention relates to the field of foam formation and stabilization, particularly foamed construction materials, such as cement. Disclosed are additives suitable to obtain mineral foams when added to the corresponding starting materials. The invention provides a ready-to-use product in the form of a solid particulate composition comprising hydrophobized particles (1) and catalytically active particles (2) as defined in claim 1. The invention further provides for manufacturing methods of such ready-to-use product.

The present invention relates to the field of foam formation and stabilization, particularly foamed construction materials, such as cement. Disclosed are additives suitable to obtain mineral foams when added to the corresponding starting materials. The invention provides a ready-to-use product in the form of a solid particulate composition comprising hydrophobized particles (1) and catalytically active particles (2) as defined in claim 1. The invention further provides for manufacturing methods of such ready-to-use product.

What are described are the use of a refractory coating composition for production of cores for diecasting, a kit for production of cores for use in diecasting, a method of producing cores for use in diecasting, cores for use in diecasting, and the use of such cores in diecasting, especially of lightweight metals

What are described are the use of a refractory coating composition for production of cores for diecasting, a kit for production of cores for use in diecasting, a method of producing cores for use in diecasting, cores for use in diecasting, and the use of such cores in diecasting, especially of lightweight metals

This disclosure is directed to an improved ballistic concrete barrier and methods of using the barrier for training with weapons using live ammunition or grenades or other fragmentation devices.

This disclosure is directed to an improved ballistic concrete barrier and methods of using the barrier for training with weapons using live ammunition or grenades or other fragmentation devices.

Compositions for making native-like marine structures are provided. The compositions include materials, typically a limestone and/or ceramic composite, for 3D printing of marine structures. Environmentally-friendly 3D printing and coating methods are also provided. The methods can be used to print structures/objects composed of a 3D printing material such as the compositions described herein, and/or coat formed structures/objects with an adhesive, such as a peptide-based bioorganic adhesive. Compositions and methods for supporting the attachment and growth of marine organisms such as coral to a substrate are also provided. The compositions contain one or more self-assembling peptides suitable for use as bioorganic adhesives. The peptide compositions are suitable for adhesive applications in the marine environment such as supporting coral growth and restoration. Methods of using the peptide-based adhesive compositions are also provided.

Compositions for making native-like marine structures are provided. The compositions include materials, typically a limestone and/or ceramic composite, for 3D printing of marine structures. Environmentally-friendly 3D printing and coating methods are also provided. The methods can be used to print structures/objects composed of a 3D printing material such as the compositions described herein, and/or coat formed structures/objects with an adhesive, such as a peptide-based bioorganic adhesive. Compositions and methods for supporting the attachment and growth of marine organisms such as coral to a substrate are also provided. The compositions contain one or more self-assembling peptides suitable for use as bioorganic adhesives. The peptide compositions are suitable for adhesive applications in the marine environment such as supporting coral growth and restoration. Methods of using the peptide-based adhesive compositions are also provided.

The invention provides a high temperature resistant Portland cement slurry and a production method thereof. The high temperature resistant Portland cement slurry comprises the following components by weight: 100 parts of an oil well Portland cement, 60-85 parts of a high temperature reinforcing material, 68-80 parts of fresh water, 1-200 parts of a density adjuster, 0.1-1.5 parts of a suspension stabilizer, 0.8-1.5 parts of a dispersant, 3-4 parts of a fluid loss agent, 0-3 parts of a retarder and 0.2-0.8 part of a defoamer. The high temperature resistant Portland cement slurry has a good sedimentation stability at normal temperature, and develops strength rapidly at a low temperature. The compressive strength is up to 40 MPa or more at a high temperature of 350° C., and the long-term high-temperature compressive strength develops stably without degradation. Therefore, it can meet the requirements for field application in heavy oil thermal recovery wells, reaching the level of Grade G Portland cement for cementing oil and gas wells.

The invention provides a high temperature resistant Portland cement slurry and a production method thereof. The high temperature resistant Portland cement slurry comprises the following components by weight: 100 parts of an oil well Portland cement, 60-85 parts of a high temperature reinforcing material, 68-80 parts of fresh water, 1-200 parts of a density adjuster, 0.1-1.5 parts of a suspension stabilizer, 0.8-1.5 parts of a dispersant, 3-4 parts of a fluid loss agent, 0-3 parts of a retarder and 0.2-0.8 part of a defoamer. The high temperature resistant Portland cement slurry has a good sedimentation stability at normal temperature, and develops strength rapidly at a low temperature. The compressive strength is up to 40 MPa or more at a high temperature of 350° C., and the long-term high-temperature compressive strength develops stably without degradation. Therefore, it can meet the requirements for field application in heavy oil thermal recovery wells, reaching the level of Grade G Portland cement for cementing oil and gas wells.