RAPID HARDENING CONCRETE COMPOSITION FOR BRIDGE DECK OVERLAY CONCRETE PAVEMENT USING FERRO-NICKEL SLAG AND THE COSTRUCTION METHOD OF BRIDGE DECK OVERLAY CONCRETE PAVEMENT THEREOF

摘要

The present invention relates to a rapid-hardening concrete composition for bridge deck overlay pavement using classified ferro-nickel slag fine aggregate, and a method for constructing bridge deck overlay pavement using the same. The rapid-hardening concrete composition for bridge deck overlay pavement includes: 100 parts by weight of rapid-hardening cement; 200-250 parts by weight of ferro-nickel slag fine aggregate classified into a particle size of 1.2-2.5 mm; 5-20 parts by weight of a mixed thickener containing a cellulose-based thickener, acrylic thickener and a polyethylene oxide-based thickener at the same weight ratio; and 50-80 parts by weight of water. The rapid-hardening concrete composition provides improved cement bondability, water-proof property, cracking resistance and salt damage resistance by virtue of the effect of removing fine voids of the mixed thickener.