| Title |
An Experimental Study on the Thermal Strain and Residual Compressive Strength of Recycled Aggregate Concrete with Fiber Content |
| Authors |
Kim Young-Sun ; Lee Tae-Gyu ; Kim Gyu-Yong ; Park Gyu-Yeon |
| Keywords |
Recycled Aggregate Concrete ; Fiber Content ; Spalling Properties ; Thermal Strain ; Residual Mechanical Properties |
| Abstract |
Limited data on the mechanical properties of recycled aggregate concrete with high temperature are available from previous studies. The objective of this study is to shed light on the thermal and mechanical properties of concrete with recycled fine aggregate replacement and fiber content after exposure to elevated temperatures (for 1hour by ISO-834). In particular, the results of the effects of recycled fine aggregate and fiber content on the thermal strain, compressive strength, elastic modulus and spalling properties curve of concrete exposure to high temperature are discussed. The results of this study are as follows. (1) At the room temperature, compressive strength and elastic modulus of concrete with recycled fine aggregate replacement and fiber content showed similar trend with concrete with natural fine aggregate. (2) Thermal strain of recycled aggregate concrete was around 20% lower than natural aggregate concrete. However, only thermal strain of concrete with 0.1Vol.% of nylon fiber was similar with thermal strain of natural aggregate concrete. (3) Residual compressive strength of recycled aggregate concrete was similar with natural aggregate concrete, and residual elastic modulus about 3% higher. |