公开(公告)号：WO2020154451A1

公开(公告)日：2020-07-30

申请号：PCT/US2020/014693

申请日：2020-01-23

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： DUBEY, Ashish ,  CHITHIRAPUTHIRAN, Sundararaman

IPC: C04B28/00 ,  C04B40/06

Abstract: A water-free blend as well as a self-consolidating geopolymer composition in the form of a slurry having an initial slump diameter and/or one hour slump diameter greater than 18 inches when measured in accordance to ASTM C1611-14 and having a final setting time of at least 60 minutes measured using ASTM C191-13 as well as having an air content of 0% to 20% by volume. The composition comprises a mixture of water and cementitious reactive powder at ratio w/crp = 0.3-0.55, cement set retarder, alkali metal chemical activator selected from alkali metal salt and/or alkali metal base and a freeze-thaw durability component. The cementitious reactive powder comprises a thermally activated aluminosilicate mineral and optionally an inorganic mineral comprising alkaline earth metal oxide, an aluminate cement, and a calcium sulfate. The thermally activated aluminosilicate mineral is selected from at least one member of the group consisting of fly ash, blast furnace slag, thermally activated clays, shales, metakaolin, zeolites, marl red mud, ground rock, and ground clay bricks. Likewise, a method for making this self-consolidating geopolymer compositions comprising the step of preparing a slurry by mixing water; cementitious reactive powder, cement set retarder, alkali metal chemical activator, freeze-thaw durability component.

公开(公告)号：WO2017069991A1

公开(公告)日：2017-04-27

申请号：PCT/US2016/056720

申请日：2016-10-13

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： DUBEY, Ashish ,  CHITHIRAPUTHIRAN, Sundararaman

IPC: E01C7/14 ,  C04B28/00 ,  C04B28/06 ,  C04B28/14

CPC classification number: C04B28/006 ,  C04B7/32 ,  C04B12/005 ,  C04B18/08 ,  C04B24/045 ,  C04B24/2676 ,  C04B24/34 ,  C04B28/06 ,  C04B28/065 ,  C04B28/14 ,  C04B2103/0066 ,  C04B2103/304 ,  C04B2103/32 ,  C04B2103/40 ,  C04B2103/50 ,  C04B2111/0075 ,  C04B2111/29 ,  C04B2111/60 ,  C04B2111/72 ,  E01C7/142 ,  E01C7/147 ,  E01C7/36 ,  E01C23/10 ,  Y02P40/165 ,  Y02W30/92 ,  C04B12/04 ,  C04B38/10 ,  C04B22/142 ,  C04B24/06

Abstract: A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium sulfate; alkali metal chemical activator; and a freeze-thaw durability component selected from at least one of air-entraining agent, defoaming agent, and surface active organic polymer; wherein the composition has an air content of about 4% to 20% by volume, more preferably about 4% to 12% by volume, and most preferably about 4% to 8% by volume. The compositions are made from a slurry wherein the water/cementitious reactive powder weight ratio is 0.14 to 0.45:1, preferably 0.16 to 0.35:1, and more preferably 0.18 to 0.25:1. Methods for making the compositions are also disclosed.

Abstract translation: 耐冻融，尺寸稳定的地质聚合物组合物，其包括：水泥质活性粉末，包括热活化硅铝酸盐矿物质，优选选自硫铝酸钙水泥和铝酸钙水泥中的至少一种的铝酸盐水泥和硫酸钙 选自硫酸钙二水合物，硫酸钙半水合物和无水硫酸钙中的至少一种; 碱金属化学活化剂; 以及选自引气剂，消泡剂和表面活性有机聚合物中的至少一种的冻融耐久性组分; 其中所述组合物具有约4体积％至20体积％的空气含量，更优选约4体积％至12体积％，并且最优选约4体积％至8体积％。 该组合物由其中水/胶凝活性粉末重量比为0.14至0.45:1，优选0.16至0.35:1，更优选0.18至0.25:1的浆料制成。 还公开了制造组合物的方法。