The positive and negative influences of VMA's on the robustness of fresh self-compacting concrete

Over time, several mix design metliods liave been developed to obtain a selfcompacting concrete (SCC) with suitable fresh and hardened concrete properties. The very fluid concrete with no need for external compaction is achieved by using a higher powder content and the use of chemical admixtures. Segregation and bleeding are prevented by either...

The combined influence of paste volume and volumetric water-to- powder ratio on robustness of fresh self-compacting concrete

In order to avoid durability problems caused by an inadequate consolidation of concrete, self-compacting concrete (SCC) has been developed. The mix design of SCC aims at balancing a minimum flowability allowing air bubbles to escape and a maximum flowability in order to avoid segregation. Because of the higher demands on mix design and...