摘要:
The invention relates to an invert emulsion consisting of a continuous oil phase comprising at least one emulsifier, wherein an aqueous phase comprising at least a hydraulic binder setting retarder is dispersed. The invention also relates to positive or negative deactivation methods using the invert emulsion of the invention.
摘要:
Surface retarder coating compositions of the invention are based on the use of at least one non-Ordinary Portland Cement (non-OPC) binder and at least one OPC set retarder agent, which are provided in powder form that can be mixed with water at the construction site. The coating is applied onto the surface of a mould or formwork using roller or spray equipment, and concrete can then be cast within 30-60 minutes against the coating. The OPC set-retarding agent operates to retard setting of the concrete so that it can be de-moulded the next day and its surface can be removed using a high pressure water spray to reveal aggregate embedded beneath the removed surface.
摘要:
Compositions and methods of the invention for retarding the surface of a concrete or other hydratable cementitious composition involve the use of at least one alkyl-ester-of-hydroxycarboxy compound contained in the form of particles or as a discontinuous phase distributed within a continuous non-aqueous carrier phase that is spray-applicable in liquid form. The set retarder helps to achieve lower pH and to avoid irritating fogs during spray application of the surface retarder when compared to prior art acid-containing surface retarders.
摘要:
Surface retarder compositions of the invention comprise at least one surface retarder active suspended in a vegetable oil or derivative thereof, an animal oil or derivative thereof, or mixtures thereof. Methods involving use of the compositions are also described.
摘要:
Surface retarder compositions of the invention comprise at least one surface retarder active suspended in a vegetable oil or derivative thereof, an animal oil or derivative thereof, or mixtures thereof. Methods involving use of the compositions are also described.
摘要:
Die vorliegende Erfindung betrifft eine Waschbetonfassade mit einer Vorsatzbetonschicht. Aufgabe ist es, für eine derartige Fassade eine neue Oberflächenoptik zur Verfügung zu stellen. Gelöst wird diese Aufgabe dadurch, daß die Körnung der Vorsatzbetonschicht aus gebrochenem Sicherheitsglas besteht.
摘要:
Die vorliegende Erfindung betrifft eine Waschbetonfassade mit einer Vorsatzbetonschicht. Aufgabe ist es, für eine derartige Fassade eine neue Oberflächenoptik zur Verfügung zu stellen. Gelöst wird diese Aufgabe dadurch, daß die Körnung der Vorsatzbetonschicht aus gebrochenem Sicherheitsglas besteht.
摘要:
A polyester obtainable by a reaction of a polycarboxylic acid component comprising a polycarboxylic acid having 2 to 6 carbon atoms in the main chain (e.g. maleic anhydride), and a polyol component comprising a polyhydric alcohol having 2 to 4 carbon atoms or its condensate is used as a cement retarder. An unsaturated polyester may also be used as a polymerizable composition comprising a polymerization initiator, a polymerizable vinyl monomer or others. The retarder may be a particle of a cured product of an unsaturated polyester. A retardative sheet can be formed by applying or impregnating a composition comprising the retarder and a tacky adhesive to a base sheet. By forming a predetermined pattern with the use of the retarder or sheet in a form, depositing a mortar composition, washing a surface of the hardened concrete, and washing out uncured mortar, a figure or a washing finished surface is formed on a surface of a concrete product.
摘要:
A surface finish for application to a substrate comprising vertical, horizontal or sloping surfaces of a structure or object, the surface finish comprising: a matrix formed from a combination of at least a cementitous material, water and glass beads of either the same size or a blend of at least two different sizes and an adhesive.
摘要:
L'invention concerne un béton dont l'agrégat comprend au moins deux composants dont les densités apparentes sont différentes et sont coordonnées avec la densité apparente du liant hydraulique pour que ces densités aient des valeurs qui soient à la fois distinctes et échelonnées de manière aussi régulière que possible. Après moulage et vibration de l'ensemble du moule, on obtient une pièce 4 dont la face 4b devant être visible (à l'extérieur du bâtiment) est démunie de granulat isolant, lequel est concentré sur la partie opposée 4a de la pièce 4. L'échelonnement des densités est régulier pour éviter toute solution de continuité