| 摘要 |
The present invention relates to settable compositions for general purpose concrete construction containing Class-F fly ash, Class-C fly ash or slag, and cement kiln dust (CKD) as a substantial replacement for Portland cement conventionally used in such compositions. The compositions of the present invention provide high early strength thereby allowing the concrete structure to be put into service sooner, reducing labor cost, and allowing precast concrete and concrete masonry manufacturers to achieve rapid form and mold turnover. |
