|
項目 |
標準技術指標 |
普通型 |
高強型 |
早強型 | ||
|
粒徑 |
4.75mm方孔篩篩余／% |
≦2.0 |
≦2.0 |
≦2.0 |
≦2.0 | |
|
凝結(jié)時間 |
初凝／min |
≧120 |
≧120 |
≧120 |
≧60 | |
|
泌水率/ % |
≦1.0 |
≦1.0 |
≦1.0 |
≦1.0 | ||
|
流動度/mm |
初始流動度 |
≧264 |
≧280 |
≧280 |
≧280 | |
|
30min保留值 |
≧240 |
≧260 |
≧260 |
≧260 | ||
|
抗壓強度/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 | ||
|
豎向膨脹率/ % |
1d |
≧0.020 |
≧0.020 |
≧0.020 |
≧0.020 | |
|
鋼筋握裹強度(圓鋼)／MPa |
28d |
≧4.0 |
≧6.0 |
≧6.0 |
≧6.0 | |
|
對鋼筋有無銹蝕作用 |
對鋼筋無銹蝕作用 | |||||
