Engineering properties of concrete containing natural zeolite as supplementary cementitious material: Strength, toughness, durability, and hygrothermal performance

A complex analysis of engineering properties of concrete containing natural zeolite as supplementary cementitious material in the blended Portland-cement based binder in an amount of up to 60% by mass is presented. The studied parameters include basic physical characteristics, mechanical and fractur...

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Published inCement & concrete composites Vol. 55; pp. 259 - 267
Main Authors Vejmelková, Eva, Koňáková, Dana, Kulovaná, Tereza, Keppert, Martin, Žumár, Jaromír, Rovnaníková, Pavla, Keršner, Zbyněk, Sedlmajer, Martin, Černý, Robert
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2015
Subjects
Binders
Blended
Cements
Concrete
Concretes
Durability
Durability properties
Fracture toughness
Fracture–mechanics properties
Hygric properties
Mechanical properties
Natural zeolite
Thermal properties
Water vapor
Zeolites
Thermal properties
Durability properties
Hygric properties
Natural zeolite
Mechanical properties
Concrete
Fracture–mechanics properties
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Summary:A complex analysis of engineering properties of concrete containing natural zeolite as supplementary cementitious material in the blended Portland-cement based binder in an amount of up to 60% by mass is presented. The studied parameters include basic physical characteristics, mechanical and fracture–mechanics properties, durability characteristics, and hygric and thermal properties. Experimental results show that 20% zeolite content in the blended binder is the most suitable option. For this cement replacement level the compressive strength, bending strength, effective fracture toughness, effective toughness, and specific fracture energy are only slightly worse than for the reference Portland-cement concrete. The frost resistance, de-icing salt resistance, and chemical resistance to MgCl2, NH4Cl, Na2SO4, and HCl are improved. The hygrothermal performance of hardened mixes containing 20% natural zeolite, as assessed using the measured values of water absorption coefficient, water vapor diffusion coefficient, water vapor sorption isotherms, thermal conductivity, and specific heat capacity, is satisfactory.
Bibliography:ObjectType-Article-1
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ISSN:0958-9465
1873-393X
DOI:10.1016/j.cemconcomp.2014.09.013