| Title |
Assessment of Physical Properties of High-Flowability Concrete Subjected to Varied High Temperatures |
| Keywords |
High-flowability Concrete(HFC) ; Residual Compressive Strength ; Mass Loss ; Fire Exposure ; Unstressed Fire Experiment |
| Abstract |
Generally concrete has a very good fire resistance. The use or interest of High-flowability concrete (HFC) has been increased in civil engineering in the last 25 years because HFC shows higher fluidity, filling ability and sufficient segregation resistance when its placing into the congested reinforcement or larger size of complex structural members without any vibration efforts. Therefore it is very necessary to assess the properties of HFC after fire exposures. This study describes laboratory experimental study on the physical properties of HFC subjected to three different exposure temperatures and three different exposure times. For this purpose 24 cylinders of HFC were tested. Mechanical properties such as residual compressive strength, axial deformation, mass loss and bulk modulus of elasticity were examined. Test results showed that the residual compressive strength, mass loss and elastic modulus were decreased with the increased temperature, and were showed a similar decreasing pattern those of normal strength concrete and high strength concrete. |