Abstract
The utilization of fine powders as fillers in self-compacting concrete (SCC) application is widespread, particularly in Europe. The incorporation of these fillers to attain the self-compatibility properties of SCC seems to be cheaper than the use of chemical admixtures. Among the wide range of potential fillers, dolomitic powders, particularly generated as by-products from quarry’s processing, are locally available and can be used to produce SCC. Few studies have shown that dolomitic powders can be incorporated in the SCC’s mix design, resulting in acceptable fresh and hardened properties of SCC. The particle size distribution and fineness of the dolomitic powder as well as the level of addition are the key factors affecting those properties. The influence of the chemical nature of the dolomitic powder on the properties of SCC, particularly the durability (e.g. alkali-carbonate reaction), is yet to be investigated. Furthermore, more efforts are still required to investigate the use of dolomitic by-products in the production of SCC.
Highlights
Self‐compacting concrete (SCC) is a special type of concrete which flows under its own weight without requiring external vibration for compaction
Soroka and Setter [58] investigated the effect of filler content and fineness on mortar strength. They used limestone, dolomite and basalt fillers with various fineness to replace 10‐ 40% of PC. Their findings indicated that the limestone and the dolomite had similar effect on mortar strength, whose strength increased as both the fineness and filler content increased while the incorporation of basalt yielded even higher strengths which explained by the pozzolanic effect of Basalt used
The available existing literature, has reported conflicting conclusions on the properties of SCC made with dolomitic fillers or aggregates
Summary
Self‐compacting concrete (SCC) is a special type of concrete which flows under its own weight without requiring external vibration for compaction. The influence of dolomite powders, either commercially available or extracted from aggregate processing waste, on fresh and hardened properties of SCC is dependent on the physical properties of the filler and content, the replacement types and the mix proportions and constituents of SCC as can be seen in Table A1 in Supplemenatary Materials.
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