7. High Performance Concrete
High Performance Concrete (HPC) significantly advances concrete technology with superior properties like high strength, lasting durability, and reduced permeability. Its effectiveness relies on careful material selection and precise mixture proportions tailored to specific performance targets. The mix design process is complex and involves understanding material interactions and operational constraints to achieve optimal results in harsh environments.
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What we have learnt
- High Performance Concrete offers properties such as high strength and low permeability.
- Mixture proportioning for HPC is a specialized process that differs from conventional concrete.
- Durability considerations are critical in the design and application of HPC.
Key Concepts
- -- Compressive Strength
- The ability of concrete to withstand axial loads without failing, typically exceeding 60 MPa in HPC.
- -- WaterBinder Ratio
- The ratio of water to cementitious materials in the mix, crucial for defining permeability and strength.
- -- SelfCompacting Concrete (SCC)
- A type of concrete that can spread and fill forms under its own weight without the need for mechanical vibration.
- -- Supplementary Cementitious Materials (SCMs)
- Materials like silica fume and fly ash added to concrete to improve properties such as strength and durability.
- -- Trial Mixes
- Experimental batches of concrete made to validate mix design and performance prior to full-scale production.
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