Hygric Properties of HPC with Natural Pozzolana

Abstract:

The water vapour transport and the liquid water transport of high performance concrete (HPC) with the content of natural pozzolana are the described in this paper. Studied properties are presented by means of water vapour diffusion coefficient, water vapour diffusion resistance factor and absorption coefficient respectively. The natural pozzolana (NP), namely natural zeolite, is used as supplementary cementitious material which affects the durability properties of the end product. The obtained results revealed the effectiveness of NP in the terms of both studied properties when used in small amounts, i.e. at about 20% of cement weight. On the other hand substitutions higher than 40% result in worsening of the resistance of the concrete to water and water vapour ingress and its movement trough the material.

• Periodical: Key Engineering Materials (Volume 677)
• Pages: 93-97
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.677.93
• Online since: January 2016
• Authors: Jaroslava Koťátková*, Monika Čáchová, Dana Koňáková, Eva Vejmelková
• Keywords: Absorption Coefficient, High-Performance Concrete, Natural Zeolite, Open Porosity, Water Vapour Diffusion Coefficient, Water Vapour Diffusion Resistance Factor

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