Techno Press
You logged in as Techno Press

Advances in Concrete Construction
  Volume 6, Number 1, February 2018, pages 069-85
DOI: http://dx.doi.org/10.12989/acc.2018.6.1.069
 


Combined effect of mineral admixture and curing temperature on mechanical behavior and porosity of SCC
Boukhelkhal Djamila, Boukendakdji Othmane, Kenai Said and Kadri El-Hadj

 
Abstract
    In order to provide sufficient stability and resistance against bleeding and segregation during transportation and placing, mineral admixtures are often used in self-compacting concrete mixes (SCC). These fine materials also contribute to reducing the construction cost and the consumption of natural resources. Many studies have confirmed the benefits of these mineral admixtures on properties of SCC in standard curing conditions. However, there are few published reports regarding their effects at elevated curing temperatures. The main objective of this study is to investigate the effect of three different mineral admixtures namely limestone powder (LP), granulated blast furnace slag (GS) and natural pozzolana (PZ) on mechanical properties and porosity of SCC when exposed to different curing temperatures (20, 40, 60 and 80oC). The level of substitution of cement by mineral admixture was fixed at 15%. The results showed that increasing curing temperature causes an improvement in performance at an early age without penalizing its long-term properties. However the temperature of 40oC is considered the optimal curing temperature to make economical and high performance SCC. On the other hand, GS is the most suitable mineral admixture for SCC under elevated curing temperature.
 
Key Words
    SCC; mineral admixture; curing temperature; mechanical strength; modulus of elasticity; porosity
 
Address
Boukhelkhal Djamila and Kenai Said : Geomaterials Laboratory, Department of Civil Engineering, University of Blida, Blida, Algeria
Boukendakdji Othmane : LME Laboratory, University of Medea, Medea, Algeria
Kadri El-Hadj : L2MGC Laboratory, University of Cergy Pontoise, Cergy Pontoise, France
 
References
    -acc0601005-
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2021 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: info@techno-press.com