| 发明名称 |
PARTICLE PACKED CEMENT-SCM BLENDS |
| 摘要 |
Cement-SCM blends employ particle packing principles to increase particle packing density and reduce interstitial spacing between the cement and SCM particles. Particle packing reduces the amount of water required to obtain a cement paste having a desired flow, lowers the water-cementitious material ratio (w/cm), and increases early and long-term strengths. This may be accomplished by providing a hydraulic cement fraction having a narrow PSD and at least one SCM fraction having a mean particle size that differs from the mean particle size of the narrow PSD cement by a multiple of 3.0 or more to yield a cement-SCM blend having a particle packing density of at least 57.0%. |
| 申请公布号 |
US2014224154(A1) |
申请公布日期 |
2014.08.14 |
| 申请号 |
US201214343136 |
申请日期 |
2012.10.17 |
| 申请人 |
ROMAN CEMENT, LLC |
发明人 |
Guynn John M.;Hansen Andrew S. |
| 分类号 |
C04B20/00;C04B7/38;C04B20/02 |
主分类号 |
C04B20/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A cement-SCM blend comprising:
a narrow PSD hydraulic cement fraction having a PSD characterized by a lower PSD endpoint, median particle size, and upper PSD endpoint; and at least one SCM fraction having a PSD characterized by a lower PSD endpoint, median particle size, and upper PSD endpoint that differ from the lower PSD endpoint, median particle size, and upper PSD endpoint of the hydraulic cement fraction in order for the cement-SCM blend to form a cement paste having a maximum particle packing density of at least 57.0%. |
| 地址 |
Bountiful UT US |
