| Title |
An Experimental Study on Properties of High-Heated Concrete |
| Abstract |
Subdividing the heating temperature and time to approach the condition of the practical fire temperature on the ordinary concrete, the test analyzed results are obtained as follows:1) The effect on the residual compressive strength showed higher the heating temperature than the heating time, and the ratio of the residual compressive strength maintained 80% above to the heating time 90 minutes in the 400C below and 30 minutes in the 600C.The strength on passing the time severely decreased, and the ratio of the residual compressive strength was very low even to the heating time 15 minutes in the 800C above.2) The estimated formula of compressie strength get Fc=-0.32Te-1.44Ti+450.5 on the heating temperature and time.3) The ratio was much lower the residual modulus of elasticity than the residual compressive strength on the heating condition, and the multi-reg-ressive formula showed E=-0.0036Te+0.013Ti+4.1. |