Abstract
Abstract The main goal of the presented research was to verify the possibility of obtaining ecological self-compacting concrete of low hardening temperature, containing different types of cements with calcareous fly ash W as main component and the influence of these cements on basic properties of fresh and hardened concrete. Cements CEM II containing calcareous fly ash W make it possible to obtain self-compacting concrete (SCC) with similar initial flowability to analogous mixtures with reference cement CEM I and CEM III/B, and slightly higher, but still acceptable, flowability loss. Properties of hardened concretes with these cements are similar in comparison to CEM I and CEM III concretes. By using cement nonstandard, new generation multi-component cement CEM “X”/A (S-W), self-compacting concrete was obtained with good workability and properties in hardened state.
Highlights
Eco-concrete is de ned as a concrete which uses waste materials as at least one of its components, its production process does not lead to environmental destruction, and it has high performance and life cycle sustainability (Fib Bulletin No 67: Guidelines for green concrete structures, 2012)
The eco-concrete is characterised by the optimization of use of materials and mix design, which especially includes: minimization of cement and clinker content through its substitution with mineral additives; enhanced workability of fresh concrete, best by using self-compacting concrete (SCC), enhanced durability and service life, and last but
One of mineral admixtures which could be used in eco-concrete is calcareous y ash W (CFA-W)
Summary
Eco-concrete is de ned as a concrete which uses waste materials as at least one of its components, its production process does not lead to environmental destruction, and it has high performance and life cycle sustainability (Fib Bulletin No 67: Guidelines for green concrete structures, 2012). Abstract: The main goal of the presented research was to verify the possibility of obtaining ecological selfcompacting concrete of low hardening temperature, containing di erent types of cements with calcareous y ash W as main component and the in uence of these cements on basic properties of fresh and hardened concrete. The eco-concrete is characterised by the optimization of use of materials and mix design, which especially includes: minimization of cement and clinker content through its substitution with mineral additives; enhanced workability of fresh concrete, best by using self-compacting concrete (SCC), enhanced durability and service life, and last but
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