Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
COMPOSITIONS WITH SYNTHETIC CALCINED GYPSUM COATED WITH DIETHYLENE-TRIAMINE-PENTAACETIC ACID (DPTA) AND METHODS
DTPA-coated synthetic calcined gypsum is provided with alpha-like properties and obtained by spray-coating the synthetic calcined gypsum with DTPA. Cementitious compositions comprising DTPA-coated synthetic calcined gypsum and low water demand are provided as well. Methods for controlling an open time of a cementitious slurry by increasing or decreasing the amount of DTPA-coated synthetic calcined gypsum in the slurry are provided as well. In particular, a cementitious composition is provided comprising synthetic calcined gypsum spray-coated with diethylene-triamine-pentaacetic acid (DTPA), water and alpha calcined gypsum, wherein DTPA-coated synthetic calcined gypsum comprises from 25% to 85% of all gypsum combined in the composition, based on the dry weight, and wherein the water demand for the composition is no more than 50 parts of water by weight for 100 parts by weight of all calcined gypsum combined.
Gypse calciné synthétique revêtu de DTPA doté de propriétés de type alpha et obtenu au moyen de revêtement par pulvérisation de DTPA sur du gypse calciné synthétique. Compositions à base de ciment comprenant du gypse calciné synthétique revêtu de DTPA et à faible demande en eau. L'invention concerne également des procédés pour réguler le temps ouvert d'une boue cimentaire par l'augmentation ou la diminution de la quantité de gypse calciné synthétique revêtu de DTPA dans la boue.
COMPOSITIONS WITH SYNTHETIC CALCINED GYPSUM COATED WITH DIETHYLENE-TRIAMINE-PENTAACETIC ACID (DPTA) AND METHODS
DTPA-coated synthetic calcined gypsum is provided with alpha-like properties and obtained by spray-coating the synthetic calcined gypsum with DTPA. Cementitious compositions comprising DTPA-coated synthetic calcined gypsum and low water demand are provided as well. Methods for controlling an open time of a cementitious slurry by increasing or decreasing the amount of DTPA-coated synthetic calcined gypsum in the slurry are provided as well. In particular, a cementitious composition is provided comprising synthetic calcined gypsum spray-coated with diethylene-triamine-pentaacetic acid (DTPA), water and alpha calcined gypsum, wherein DTPA-coated synthetic calcined gypsum comprises from 25% to 85% of all gypsum combined in the composition, based on the dry weight, and wherein the water demand for the composition is no more than 50 parts of water by weight for 100 parts by weight of all calcined gypsum combined.
Gypse calciné synthétique revêtu de DTPA doté de propriétés de type alpha et obtenu au moyen de revêtement par pulvérisation de DTPA sur du gypse calciné synthétique. Compositions à base de ciment comprenant du gypse calciné synthétique revêtu de DTPA et à faible demande en eau. L'invention concerne également des procédés pour réguler le temps ouvert d'une boue cimentaire par l'augmentation ou la diminution de la quantité de gypse calciné synthétique revêtu de DTPA dans la boue.
COMPOSITIONS WITH SYNTHETIC CALCINED GYPSUM COATED WITH DIETHYLENE-TRIAMINE-PENTAACETIC ACID (DPTA) AND METHODS
COMPOSITIONS CONTENANT DU GYPSE SYNTHETIQUE ET PROCEDES CORRESPONDANTS
LETTKEMAN DENNIS MARK (Autor:in) / WILSON JOHN WESLEY (Autor:in) / CLOUD MIKE L (Autor:in) / BALL BRIAN K (Autor:in) / KALIGIAN RAYMOND A (Autor:in) / BLACKBURN DOUG (Autor:in)
06.12.2022
Patent
Elektronische Ressource
Englisch
METHOD OF MODIFYING BETA STUCCO WITH DIETHYLENE-TRIAMINE-PENTAACETIC ACID
| Europäisches Patentamt | 2016
A METHOD OF MODIFYING BETA STUCCO USING DIETHYLENE-TRIAMINE-PENTAACETIC ACID
| Europäisches Patentamt | 2020
A METHOD OF MODIFYING BETA STUCCO USING DIETHYLENE-TRIAMINE-PENTAACETIC ACID
| Europäisches Patentamt | 2017
A method of modifying beta stucco using diethylene-triamine-pentaacetic acid
| Europäisches Patentamt | 2016
-- A METHOD OF MODIFYING BETA STUCCO USING DIETHYLENE-TRIAMINE-PENTAACETIC ACID
Europäisches Patentamt | 2020