| 发明名称 |
EXTRA HIGH EARLY-STRENGTH PORTLAND CEMENT |
| 摘要 |
This invention is to provide Portland cement having extra high 1-day compressive strength composition of which is: the particular lime saturation degree = 0.95-1.03, Cr203 content = 1.2- 2.6 percent by weight and (Al203+Fe203) content = 7.0-8.6 percent by weight, weight ratio of Al203/Fe203 being 1.65+/-0.50.
|
| 申请公布号 |
US3649316(A) |
申请公布日期 |
1972.03.14 |
| 申请号 |
USD3649316 |
申请日期 |
1969.07.15 |
| 申请人 |
ONODA CEMENT CO. LTD. |
发明人 |
TATUJIRO UNO;MASATOSHI MOCHIZUKI |
| 分类号 |
C04B7/02;C04B7/42;(IPC1-7):C04B7/02;C04B7/48 |
主分类号 |
C04B7/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
