发明申请
WO2022177807A1 DRY MIXES AND CEMENTS CONTAINING CELLULOSE ETHERS AS LUBRICATIVE ADDITIVES FOR ROLLER COMPACTED CONCRETE APPLICATIONS AND METHODS OF USING THEM
审中-公开
基本信息:
- 专利标题： DRY MIXES AND CEMENTS CONTAINING CELLULOSE ETHERS AS LUBRICATIVE ADDITIVES FOR ROLLER COMPACTED CONCRETE APPLICATIONS AND METHODS OF USING THEM
- 申请号：PCT/US2022/016072 申请日：2022-02-11
- 公开(公告)号：WO2022177807A1 公开(公告)日：2022-08-25
- 发明人： FAN, Yi , THEUERKAUF, Jorg , RADLER, Michael J. , SABA, Stacey A. , KOPPI, Kurt A. , KEENAN, Sean M. , LEVIN, Jessica R. , SAMMLER, Robert L.
- 申请人： DOW GLOBAL TECHNOLOGIES LLC , ROHM AND HAAS COMPANY
- 申请人地址： 2211 H.H. Dow Way; 400 Arcola Road
- 专利权人： DOW GLOBAL TECHNOLOGIES LLC,ROHM AND HAAS COMPANY
- 当前专利权人： DOW GLOBAL TECHNOLOGIES LLC,ROHM AND HAAS COMPANY
- 当前专利权人地址： 2211 H.H. Dow Way; 400 Arcola Road
- 代理机构： ZHAO, Zhiqiang
- 优先权： US63/151,089 2021-02-19
- 主分类号： C04B28/02
- IPC分类号： C04B28/02 ; C04B24/38 ; E01C7/14 ; E01C11/00
摘要：
The present invention provides a dry mix composition of a low-viscosity cellulose ether (50 to 750 mPa• s at 1 wt.% solids, at 20 C, and a 514 s-1 shear rate, using a strain-controlled rotational rheometer (for example, ARES-G2™, TA Instruments), a graded aggregate, and a hydraulic cement, or a granular wet cement composition of the cement, graded aggregate and an admixture therefor including the cellulose ether. The wet granular hydraulic cement composition behaves like asphalt compositions and has zero or near zero slump, a high lubricity and from 5 wt.% to less than 13 wt.% of water, or, preferably from greater than 5 to 10.5 wt.%, based on the total weight of the granular wet cement composition. The low-viscosity cellulose ether enables lubricity without impairing compaction and without causing air entrainment.