Concrete consolidating self
Self-compacting concrete has been used in bridges and even on pre-cast sections.
One of the most remarkable projects built using self-compacting concrete is the Akashi-Kaikyo Suspension Bridge.
The committee also sponsors technical sessions on various aspects of self-consolidating concrete technology during ACI Conventions, and collaborates with other technical international organizations that are developing guidelines/state-of-the-art reports on self-consolidating concrete, including RILEM, fib and CSA.
The ACI Foundation’s Strategic Development Council has identified self-consolidating concrete as an Industry Critical Technology.
The importance of self-compacting concrete is that maintains all concrete’s durability and characteristics, meeting expected performance requirements.
In certain instances the addition of superplasticizers and viscosity modifier are added to the mix, reducing bleeding and segregation.
Since its inception in the 1980s, the use of SCC has grown tremendously.Concrete that segregates loses strength and results in honeycombed areas next to the formwork.A well designed SCC mix does not segregate, has high deformability and excellent stability characteristics Self-compacting concrete produces resistance to segregation by using mineral fillers or fines and using special admixtures.The development of high performance polycarboxylate polymers and viscosity modifiers have made it possible to create “flowing” concrete without compromising durability, cohesiveness, or compressive strength.The flowability of SCC is measured in terms of spread when using a modified version of the slump test (ASTM C 143).