Mechanical and Hydric Properties of High- Performance Concrete Containing Natural Zeolites

Mechanical and water transport properties of high performance concrete (HPC) containing natural zeolite as partial replacement of Portland cement are studied. Experimental results show that in the investigated mixes the use of natural zeolite leads to an increase of porosity, decrease of compressive strength and increase of moisture diffusivity and water vapor diffusion coefficient, as compared with the reference HPC. However, for the replacement level up to 20% of the mass of Portland cement the concretes still maintain their high performance character and exhibit acceptable water transport properties. Therefore, natural zeolite can be considered an environmental friendly binder with a potential to replace a part of Portland cement in concrete in building industry.

Authors:

• E. Vejmelková
• M. Ondráček
• R. Černý

Keywords:

• Natural zeolites
• high-performance concrete; hydric properties
• mechanical properties

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