TY - JOUR
T1 - Mechanical properties of photocatalytic white concrete subjected to high temperatures
AU - Biolzi, Luigi
AU - Di Luzio, Giovanni
AU - Labuz, Joseph F.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - The paper describes the consequences of progressive damage in architectural high performance concrete when exposed to different heating treatments. Specimens were tested for uniaxial compressive, direct, and indirect tensile strengths at ambient conditions approximately one day after the exposure to the high temperature. Modifications in the microstructure, porosity, and pore size distribution of the fire deteriorated specimens were identified using scanning electron microscopy and mercury intrusion porosimetry techniques. Test results revealed no significant variations in the mechanical strengths for specimens exposed to temperatures up to 250°C. Per contra, significant damage was observed for higher temperature, 500°C and 750°C, treatments, similar to that of ordinary concrete made with similar aggregates. Based on X-ray diffraction analysis, photocatalytic properties of the concrete were lost at 750°C.
AB - The paper describes the consequences of progressive damage in architectural high performance concrete when exposed to different heating treatments. Specimens were tested for uniaxial compressive, direct, and indirect tensile strengths at ambient conditions approximately one day after the exposure to the high temperature. Modifications in the microstructure, porosity, and pore size distribution of the fire deteriorated specimens were identified using scanning electron microscopy and mercury intrusion porosimetry techniques. Test results revealed no significant variations in the mechanical strengths for specimens exposed to temperatures up to 250°C. Per contra, significant damage was observed for higher temperature, 500°C and 750°C, treatments, similar to that of ordinary concrete made with similar aggregates. Based on X-ray diffraction analysis, photocatalytic properties of the concrete were lost at 750°C.
KW - High performance white concrete
KW - Mechanical properties degradation
KW - Size effect
KW - Thermal damage characterization
KW - Thermal treatment
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U2 - 10.1016/j.cemconcomp.2013.03.016
DO - 10.1016/j.cemconcomp.2013.03.016
M3 - Article
AN - SCOPUS:84879089610
SN - 0958-9465
VL - 39
SP - 73
EP - 81
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
ER -