Paper Title:
Optimum Dosage of PP Fiber for the Spalling Control of High Strength Reinforced Concrete Columns
  Abstract

Spalling is defined as damages to concrete exposed to high temperature during fire, causing cracks and localized bursting of small pieces of concrete. As the concrete strength increases, the degree of damage caused by spalling becomes more serious due to impaired permeability. It has been reported that polypropylene(PP) fiber has an important role in protecting concrete from spalling, and the optimum dosage of PP fiber is 0.2%. However, this result was based on the fire test of non-reinforced concrete specimens. The high-temperature behavior of highstrength reinforced concrete columns with various concrete strength and various quantity of PP fibers is investigated in this study. The results revealed that the ratio of unstressed residual strength of columns increased as the concrete strength increased and as the quantity of PP fiber increased from 0% to 0.2% the residual strength of columns increase. However, the effect of PP fiber quantity on residual strength of column was barely above 0.2%.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
621-624
DOI
10.4028/www.scientific.net/KEM.348-349.621
Citation
S.H. Yoo, S.W. Shin, I.K. Kim, "Optimum Dosage of PP Fiber for the Spalling Control of High Strength Reinforced Concrete Columns ", Key Engineering Materials, Vols. 348-349, pp. 621-624, 2007
Online since
September 2007
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Price
$32.00
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