Durability of High Performance Concrete in an Aggressive Environment

Abstract:

In Algeria, locally available natural pozzolan of volcanic origin material has the potential for use in environmental friendly concrete as a partial cement replacement. This paper studies the effect of replacement level of pozzolan concrete in sulphated environment. The natural pozzolan has a marked influence on the properties of the concrete. When it is coupled to a water reducing superplasticizer by a correct adjustment of the composition, it greatly improves the concrete properties. The analysis of experimental results on pozzolan concrete at 5% content and fineness of 9565 cm²/g exposed in sulphated environment, show that it positively contributes to the improvement of its mechanical, physical and physico-chemical characteristics. Trough this research work, parameters such as compressive strength development, chloride permeability, water absorption and sulphates resistance are studied.

• Periodical: Key Engineering Materials (Volume 600)
• Pages: 485-494
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.600.485
• Online since: March 2014
• Authors: Ahcene Merida*, Fattoum Kharchi, Rabah Chaid
• Keywords: High-Performance Concrete (HPC), Ions Chlorinate, Natural Pozzolana, Sulphate

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