Properties of Fresh and Hardend Concretes using Crushed-stone
Powder
By Y. Tsuji, A. Shimizu, K. Mano and M. Hisaka
Concrete Journal, Vol.42, No.8, Aug. 2004
- Synopsis
- Crushed-stone powder is limited to what passes through a 75 micrometer sieve
in which the by-product is separated by dry process at the time of manufacture
of a crushed stone and/or a crushed sand. Such crushed-stone powder can be
used for the purpose of increasing the material's separation resistance of
concrete. The cause of the limitation as mentioned above is that the indication
of the fine powder which passes through a 75-micrometer sieve can lessen a
unit content of water from the examination results of mortar and concrete.
Higher compressive strength and lower carbonation can be gained when used
crushed-stone powder in place of fine aggregate. Drying shrinkage and frost
damage of concrete are both almost same if fine aggregate is replaced by crushed-stone
powder.
The quality of specified crushed-stone powder was proposed in a table and the TR A 0015 based on the proposal was published at 2002. - Keywords:
- crushed-stone powder, 75 micrometer sieve, fresh concrete, hardend concrete
