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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.18 [2011] >
IJEMS Vol.18(3) [June 2011] >
| Title: | Compatibility of coarse aggregates with different cements for key characteristics of self-compacting concrete |
| Authors: | Şahin, Remzi
Akarsu, Meşkure |
| Keywords: | Self-compacting concrete
Viscosity
Flowability
Passing ability
Segregation resistance
Cement type
Coarse aggregate |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This paper
presents the key characteristics of fresh self-compacting concrete (SCC) made
of five types of cements and coarse aggregates with different physical properties.
The characteristics of SCC are evaluated in terms of viscosity,
flowability, passing ability and segregation
resistance of fresh
concrete as per the European Guidelines for SCC. It is concluded that all key
characteristics displayed changes depending on both the type of coarse
aggregate and cement. Shape and morphological characteristics of the
coarse aggregates like surface texture played significant role on the performance of fresh SCC. Mixes composed of gravel with smooth surface and spherical
shape exhibited improved levels of the viscosity, flowability and passing
ability of fresh SCC in comparison to crushed coarse aggregates with rough
surfaces. Although the relative specific gravity and fineness of the cement
influenced the characteristics some other factors can be responsible for the
behavior of the SCC as well. Mixes composed of CEM V cements are appropriate
for high flowability, passing ability and segregation resistance of SCC. The
following mixes could be employed for achieving the associated qualities
respectively; sulfate resistance cement+gravel mixes for applications that
necessitate lower viscosity levels, CEM V+grey limestone mixes for the largest
flowability, CEM V+gravel mixes for the best passing ability, and lastly CEM V+white
limestone mixes for the best segregation resistance. |
| Page(s): | 239-247 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.18(3) [June 2011]
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