摘要:
The invention relates to carbonatable calcium silicate-based cements and concretes, which result in concrete compositions that have an improved aesthetics. The invention also relates to a cement product comprising: - a plurality of particles of a carbonatablecalcium silicate cement and - a first additive; wherein, the first additive is a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.
摘要:
Die vorliegende Erfindung betrifft eine Gips-Zusammensetzung, welche Recyclinggips und einen Schaumbildner enthält, welcher mindestens ein alpha-Sulfofettsäuredisalz umfasst, ein Verfahren zu deren Herstellung sowie einen Artikel, welcher die erfindungsgemäße Gips-Zusammensetzung enthält. Des Weiteren betrifft die vorliegende Erfindung die Verwendung eines Schaumbildners, welcher mindestens ein alpha-Sulfofettsäuredisalz umfasst, zur Verminderung der Nassdichte einer wässrigen Gips-Zusammensetzung, welche einen Recyclinggips-Anteil von mindestens 0,5 Gew.-% aufweist.
摘要:
Die Erfindung betrifft die Verwendung von Carbonsäure-stämmigen Polyoxyalkylenen als emissionsarme Schwindreduzierer in mineralischen Bindemitteln, Verfahren zur Schwindreduktion und entsprechende Zusammensetzungen.
摘要:
The present invention relates to recycled asphalt concrete and a manufacturing method therefor and, more specifically, to recycled and regenerated asphalt concrete and a manufacturing method therefor, which minimizes the amount of flat and elongated particles included in aggregates used as materials for asphalt concrete, thereby increasing the quality of the asphalt concrete to first grade (the amount of the flat and elongated particles is less than 10%) and increasing the durability of the asphalt concrete.
摘要:
The present invention relates to the use of sacrificial agents to counteract the deleterious impact of gypsum contaminants on the effectiveness of certain stucco additives, particularly, water reducing agents and foaming agents, in a stucco slurry used to make gypsum wallboard.
摘要:
Cement compositions may contain a cement component and an oil-immiscible solvent and used in a number of cementing applications. In another aspect, methods for sealing subterranean zones may include emplacing a cement composition into a wellbore containing a cement component and an oil-immiscible solvent, contacting the cement composition with a water source, and reacting the cement composition with the water source to form a hardened cement.
摘要:
A monolithic concrete casting has an outer coating integrally formed with the casting. The coating has an additive of a resin and/or a polymeric and/or acrylic and/or a chemical and/or a mineral; type. The additive is added to a mixture forming the concrete casting.
摘要:
Described herein is a modified sulfur formulations having a carbon black material (e.g., lampblack) and a naturally derived oil, such as vegetable oil, or its derivative. The modified sulfur has an impact resistance greatly improved over other sulfur formulations. The modified sulfur can be used, for example, in sulfur coated controlled release fertilizer products. The sulfur can additionally or alternately be used in any application that would benefit from an increased impact resistance.
摘要:
Compositions and methods of the present invention comprise the use of at least one alkoxylated fatty compound comprising at least one propylene oxide group, the alkoxylated fatty compound having a turbidity most preferably greater than 1000 NTU (as measured in a 0.2 weight percent aqueous solution) and carbon dispersing compound (e.g., lignosulfonate) to reduce carbon spotting in mortars and concretes containing a carbon-bearing fly ash having a methylene blue (MB) value of at least 1 mg/g or greater (as 10 determined according to ASTM C1777-13). The compositions may, for example, be combined as dry powder with the carbon-bearing fly ash where the fly ash is produced, or in aqueous liquid composition form, such as would be suitable for dispensing at a concrete ready-mix plant. Exemplary additive or admixture compositions may further comprise air entraining agents, alkanolamines, or both.
摘要:
Embodiments of the present disclosure are directed to water-resistant products which contain a wax emulsion, or silicones, or siliconates, or fluorinated compounds, or stearates, or combinations thereof. In some embodiments, the compound can be used to provide enhanced moisture resistance to joints, or holes such as screw holes or nail holes, in a wallboard.