iUP Publications Online
Home About IUP Magazines Journals Books Archives
     
Recommend    |    Subscriber Services    |    Feedback    |     Subscribe Online
 
S
The IUP Journal of Structural Engineering :
Influence of Elevated Temperature on Steel Fiber Reinforced High Strength SCC
:
:
:
:
:
:
:
:
:
 
 
 
 
 
 
 

The paper studies partial replacement of river sand by M-Sand. River sand was partially replaced from 0% to 40% at an interval of 10% by M-Sand. With an increase in percentage of M-Sand, passing ability and flowability were decreased continuously. For strength and workability, 30% replacement of river sand by M-Sand was found to be optimum. Steel fibers were incorporated in the mix and varied in terms of volume fraction from 0.5% to 2.5% at an interval of 0.5%. Further, Rapid Chloride Penetration Test (RCPT) was also performed, and it showed that least penetration of chloride ions was observed at 2% volume fraction of steel fibers. All specimens showed very less penetration (<1000 Coulombs) values, subjected to elevated temperatures of 200 C, 400 C and 600 C, for a duration of 2 h and tested for compressive strength. It was observed that all specimens suffered reduction in strength at elevated temperatures. The reduction in strength was least for SCC containing 2% volume fraction of steel fibers.

 
 

Self-Compacting Concrete (SCC) is used in tall buildings, and in case of sudden fires, properties of concrete alter post fire. Hence, it is necessary to know the variation in properties of concrete when exposed to elevated temperatures. To estimate the response of the structure when exposed to elevated temperatures, it is imperative to study the changes in the properties of concrete (Narayan and Manjunatha, 2016). Increase in temperature can lead to formation cracks. These cracks can eventually cause reduction of structural stability and shortening of its serviceability. The impact of high temperatures on residual properties of concrete is important for structures such as containment vessels, nuclear reactors, chimneys, crude oil storage tanks, hot water tanks, foundation for blast furnace, aircraft runways, furnace walls industrial chimney, etc. (Arabi and Sleiman, 2012).

 
 

EFNARC, Ground Granulated Blast Furnace Slag (GGBS), Manufactured Sand (M-Sand), Rapid Chloride Penetration Test (RCPT), Self-Compacting Concrete (SCC), Steel fibersEFNARC, Ground Granulated Blast Furnace Slag (GGBS), Manufactured Sand (M-Sand), Rapid Chloride Penetration Test (RCPT), Self-Compacting Concrete (SCC), Steel fibers