HIGH VOLUME BLAST FURNACE SLAG CONCRETE COMPOSITION USING WASTE ASH AND RECYCLED AGGREGATE

摘要

PURPOSE: High volume blast furnace slag concrete using incineration plant ash and recycled aggregate is provided to increase strength of concrete by accelerating a latent hydraulic activity of ground powder of blast furnace slag using the incineration plant ash and the recycled aggregate. CONSTITUTION: High volume blast furnace slag concrete comprises: a binding material; water; recycled small aggregate; and recycled big aggregate. The binding material comprises: 70-90wt% of ground powder of blast furnace slag; and 10-30wt% of normal Portland cement. The incineration plant ash substitutes for the cement, and is included in 0.5-2.0wt% to the binding material. A manufacturing method for the incineration plant ash comprises the following steps: Dust is collected by spraying milky lime to exhaust gas generated while incinerating city life garbage.; The milky lime is sprayed in a semi-dry alkali reaction tower in a form of lime slurry.; The high volume blast furnace slag concrete is mixed in a water binder ratio of 40-65wt% and a fine aggregate modulus of 35-50vol%. [Reference numerals] (AA) Compressive intensity(MPa); (BB) Material age(days)