|
项目 |
标准技术指标 |
普通型 |
高强型 |
早强型 | ||
|
粒径 |
4.75mm方孔筛筛余／% |
≦2.0 |
≦2.0 |
≦2.0 |
≦2.0 | |
|
凝结时间 |
初凝／min |
≧120 |
≧120 |
≧120 |
≧60 | |
|
泌水率/ % |
≦1.0 |
≦1.0 |
≦1.0 |
≦1.0 | ||
|
流动度/mm |
初始流动度 |
≧264 |
≧280 |
≧280 |
≧280 | |
|
30min保留值 |
≧240 |
≧260 |
≧260 |
≧260 | ||
|
抗压强度/MPa |
6h |
— |
— |
— |
≧25.0 | |
|
1d |
≧22.0 |
≧25.0 |
≧40.0 |
≧45.0 | ||
|
3d |
≧40.0 |
≧45.0 |
≧60.0 |
≧65.0 | ||
|
28d |
≧70.0 |
≧75.0 |
≧80.0 |
≧80.0 | ||
|
竖向膨胀率/ % |
1d |
≧0.020 |
≧0.020 |
≧0.020 |
≧0.020 | |
|
钢筋握裹强度(圆钢)／MPa |
28d |
≧4.0 |
≧6.0 |
≧6.0 |
≧6.0 | |
|
对钢筋有无锈蚀作用 |
对钢筋无锈蚀作用 | |||||
