Effect of different fibers on compressive strength of self-compacting concrete at elevated temperature

1st International Conference on Advanced Engineering Functional Materials

Zuhair, Mohammad^1 ; Deshmukh, S.K.^2

P. R. PotePatil College of Engineering and Management Amravati, India^1

College of Engineering and Technology, Akola

Maharashtra, India^2

关键词: Compressive strength of concrete;    Elevated temperature;    Exposed to;    Extreme temperatures;    Lower temperatures;    Polypropylene fiber;    Properties of concretes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/410/1/012007/pdf
DOI  :  10.1088/1757-899X/410/1/012007

来源: IOP

【 摘 要 】

Self-compacting concrete (SCC) is a highly flow able type of concrete that spreads into the form without the need of mechanical vibration and placed by means of its own weight. It is necessary to know the change in the properties of concrete due to extreme temperature exposure. This experimental study investigates the effect of various fibers used in Self Compacting Concrete (SSC) on compressive strength when exposed to elevated temperature from 4000C, 6000C and 8000C for the duration of 2 hrs. and 4 hrs. The Self Compacting Concrete (M30 grade) with 1% and 0.5% of different fibers (Steel, Glass, and Polypropylene) were used. The results indicate the increase in temperature and heating duration decreases compressive strength of concrete. Elevated temperature upto 8000C declines the performance of concrete comparing the same with lower temperature of 4000C. The use of 1% Steel fiber and 0.5% Polypropylene fiber shows significant performance in the development of higher compressive strength and improved toughness at elevated temperatures and addition of fibers reduces the spalling in concrete.