Properties of Fresh and Hardened Concretes using Crushed-stone Powder
2004 Volume 42 Issue 8 Pages 22-29
Details
2004 Volume 42 Issue 8 Pages 22-29
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.
