New Developments in Chemical Admixtures-An ACI 212 Update-Workability-Retaining Admixtures A New Class of Admixtures that Provides Consistency Control of Concrete (Recorded Presentation)

Workability-Retaining Admixtures A New Class of Admixtures that Provides Consistency Control of Concrete (Recorded Presentation)

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Video Summary

The presentation focused on the integration and benefits of workability-retaining admixtures, a modern advancement in concrete technology. These admixtures are distinct from traditional water reducers, retarding, and hydration-controlling admixtures. They aim to maintain the workability of concrete without affecting setting time or early strength, promoting consistent performance across various projects. Notably, workability retention is crucial due to the universal phenomenon of slump loss. The speaker highlighted how these admixtures contribute to more consistent concrete mixtures, minimizing the common practice of re-tempering with water, which can negatively impact strength and durability. Case studies demonstrated the practical applications and advantages of these admixtures, including their effectiveness in challenging conditions, such as high temperatures and projects requiring high-performance or self-consolidating concrete. Ultimately, workability-retaining admixtures reduce cost, increase efficiency, and ensure consistency in concrete construction, supporting sustainable building practices.

Keywords

workability-retaining admixtures

concrete technology

slump loss

consistent performance

sustainable building

high-performance concrete