Characteristics of the Concrete with Blast Furnace Slag Fine Aggregate and Fly Ash and its Applications
By C. Yoshizawa, H. Mine and Y. Ishikawa
Concrete Journal, Vol.55, No.6, Jun. 2017
- Synopsis
- At the time to use the BFS (blastfurnace slag fine aggregate), bleeding is likely to occur under the condition that the water-cement ratio is more than 50% in concrete making due to a lack of fine portion of fine aggregate in concrete. In order to improve the properties of concrete with the BFS, we conduct a test to add the FA (fly ash) as admixtures and filling materials for the BFS. As a result, the properties of the fresh concrete, compressive strength, durability have been improved. Meanwhile, the ready-mixed concrete with the BFS and the fly ash have become popular in Osaka area. We additionally conducted to utilize these materials of by-products in concrete making for the construction work to renew the Takehara Thermal Power Station Unit 1 in Hiroshima Prefecture. The use of a combination of these by-products concrete, significant carbon dioxide emissions reduction effect can be expected.
- Keywords:
- blast furnace slag fine aggregate, fly ash, bleeding, durability, drying shrinkage, freeze-thaw
