Design and Properties of Fire-Proof Coating for Tunnels
Silicate fireproof coatings for tunnels (FCT) have many eminent properties. But low adhesion strength and poor water/fire-resistance of this kind of materials largely limit its applications. Here we reported a new kind of FCT based on high alumina cement as principle adhesive, redispersible powder as assisting adhesive, ammonium polyphosphate as fire-retardant material, vermiculite as adiabatic padding, and magnesium hydroxide as assisting reagents. The influence of various experimental conditions on fire resistance, adhesion strength and water resistance were carefully studied. Results showed that dispersible emulsoid powder was a key component affecting adhesion strength and water resistance of FCT, whereas fire-retardant material posed significant effects on the fire resistance.
Wei Pan and Jianghong Gong
Y. D. Yao, G. F. Yin, X. W. Cheng, X. L. Gou, "Design and Properties of Fire-Proof Coating for Tunnels", Key Engineering Materials, Vols. 336-338, pp. 1753-1755, 2007