Behavior of Densified Normal Strength Concrete under Elevated Temperature
This paper presents an experimental investigation on fire resistance of densified normal strength concrete (DNSC), at water/binder (W/B) ratios of 0.45, 0.36, and 0.32, of which compressive strength of 28-days ranged from 42.5 MPa to 56.3 MPa. The results of the spalling test reveal that DNSC encountered explosive under high temperature. Polymer fiber can be used to improve fire resistance of DNSC. DNSC subjected to high temperature lost its mechanical properties in a similar manner to that of high-strength concrete.
Hao-Wen YE and Gai-Fei PENG
B. M. Zhao et al., "Behavior of Densified Normal Strength Concrete under Elevated Temperature", Key Engineering Materials, Vols. 405-406, pp. 405-408, 2009