Properties of Fresh and Hardened Self-Compacting Concretes with Mineral Addition of Industrial Byproducts
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The theme of the presented investigation was the investigation of the properties of one special type of concrete, Self-compacting concrete (SCC), which can be regarded as a product of extrapolation of superplasticizer use concept, towards the obtaining concrete of fluid consistency, but prone to segregation. Within this paper, results of investigation conducted on eleven SCC mixtures, made with different mineral additions, are presented. These mixtures are: reference SCC mixture with limestone filler as addition, three mixtures with partial replacement of limestone filler with fly ash, three mixtures with partial replacement of limestone filler with ground recycled concrete, and four SCC mixtures with the partial replacement of limestone filler with ground sulfur. The results of investigation of physical and mechanical properties of these mixtures are included in the paper together with the conclusion regarding the change of the mentioned properties with the parameter – the used minera...l addition. In fresh state, following properties were investigated: density, slump flow, L-box test, V-funnel test, segregation resistance. In hardened state investigations included: compressive strength, “pull-off” strength, flexural strength, ultrasonic pulse velocity and dynamic modulus of elasticity. Increasing the amount of resources available for the preparation of SCC mixtures, with a positive environmental impact – reduction of these materials in landfills, can be considered as two main positive effects that should arise from the presented research.
Keywords:self-compacting concrete (SCC) / mineral addition / industrial by-products / physical and mechanical properties / sustainable construction
Source:Zbornik radova konferencije Savremena građevinska praksa 2017., 2017
- Departman za građevinarstvo i geodeziju, Fakultet tehničkih nauka, Novi Sad