| 发明名称 |
GYPSUM WALLBOARD PRODUCED USING A HIGH WATER-TO-STUCCO RATIO |
| 摘要 |
A gypsum composition, board, and method of producing a gypsum board with increased fire endurance are described. The set gypsum-containing composition can be used to prepare a gypsum board having fire endurance, based on particular water-to-stucco ratios. |
| 申请公布号 |
US2015104629(A1) |
申请公布日期 |
2015.04.16 |
| 申请号 |
US201314054689 |
申请日期 |
2013.10.15 |
| 申请人 |
United States Gypsum Company |
发明人 |
CAO Bangji;SONG Weixin D.;CHAN Cesar |
| 分类号 |
E04B1/94;E04C2/04 |
主分类号 |
E04B1/94 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A fire resistant gypsum board comprising:
a set gypsum composition disposed between two cover sheets, the set gypsum composition comprising an interlocking matrix of set gypsum formed from a slurry comprising at least stucco and water; the slurry having a water-to-stucco ratio from about 0.7 to about 2.0; and the board having a density from about 24 lbs/ft3 to about 40 lbs/ft3, and when at a thickness of about ⅝ inch, a nail pull resistance of at least about 70 lbs of force as determined according to ASTM C473-09, and a Fire Endurance Index (FEI) greater than about 52 minutes. |
| 地址 |
Chicago IL US |
