| 摘要 |
<p>A fire-resistant mortar composition having high ductility is provided to ensure mechanical performances and substance permeation resistance more superior than the conventional polymer cements and have excellent crack-controllable performances. A fire-resistant mortar composition having high ductility comprises 20-40wt% of silica, 20-30wt% of cement, 5-15wt% of fly ash, 0.1-1.0wt% of silica fume, 3-10wt% of calcium carbonate, 0.1-5wt% of hollow porous ceramic, 1-4wt% of a CSA-based blowing agent, 1-5wt% of powdered resin, 0.01-0.08wt% of a thickener, 0.01-0.25wt% of a shrinkage-reducing material, 0.1-0.5wt% of a water-reducing agent, 0.01-0.20wt% of an air entraining agent, and the balance of water. The composition further includes 0.95-1.80 parts by volume of high tension polyvinylalcohol fibers having a diameter of 26-100micron, a length of 3-15mm, and a tensile strength of 1,200-1,900 MPa based on 100 parts by volume of the fire-resistant mortar composition having high ductility.</p> |
