What is Self-Consolidating concrete (SCC)?
SCC is a high-performance concrete that can flow easily into tight and constricted spaces without segregating and without requiring vibration. The key to creating SCC, also referred to as self-compacting, self-levelling, or self-placing concrete, is a mixture that is fluid, but also stable to prevent segregation. To achieve the desired flowability a new generation of superplasticisers based on polycarboxylate ethers works best. Developed in the 1990s, they produce better water reduction and slower slump loss than traditional superplasticisers. The required level of fluidity is greatly influenced by the particular application under consideration. Obviously the most congested structural members demand the highest fluidity. However, element shape, desired surface finish, and travel distance can also determine the required fluidity. Generally, the higher the required flowability of the SCC mix, the higher the amount of fine material needed to produce a stable mixture. However, in some case
