Mechanical characteristics of self-compacting concretes with different filler materials, exposed to elevated temperatures

作者：Anagnostopoulos N; Sideris K K^*; Georgiadis A

来源：Materials and Structures, 2009, 42(10): 1393-1405.

DOI：10.1617/s11527-008-9459-6

• Filler materials
• Glass filler
• Mechanical characteristics
• Self-compacting concrete
• Slag
• Temperature

In this paper, the studies concern the influence that different fillers have on the properties of SCC of different strength classes when exposed to high temperatures. A total of six different SCC and two conventional concrete mixtures were produced. The specimens produced are placed at the age of 180 days in an electrical furnace which is capable of reaching 300 degrees C at half an hour and 600 degrees C at 70 min. The maximum temperature is maintained for an hour. Then the specimens are let to cool down in the furnace. The hardened properties measured after fire exposures are the compressive strength, splitting tensile strength, water capillary absorption and the ultrasonic pulse velocity. Explosive spalling occurred in most cases when specimens of higher strength class are exposed to high temperatures. The spalling tendency is increased for specimens of higher strength class C30/37 irrespective of the mixture type (SCC or NC) and the type of filler used.

• 出版日期2009-12