HighPerformance Concrete

1
High-Performance Concrete
2
Characteristics of High-Performance Concretes

• High strength
• High early strength
• High modulus of elasticity
• High abrasion resistance
• High durability and long life in severe
  environments
• Low permeability and diffusion
• Resistance to chemical attack

3
Characteristics of High-Performance Concretes

• High resistance to frost and deicer scaling
  damage
• Toughness and impact resistance
• Volume stability
• Ease of placement
• Compaction without segregation
• Inhibition of bacterial and mold growth

4
(No Transcript)
5
(No Transcript)
6
Two Union Square Seattle, 1988

• Cement (865 lb/yd3)
• w/c 0.25
• Silica fume (72 lb/yd3)
• Fine aggr. (1155 lb/yd3)
• HRWR (420 oz/yd3)
• 28d strength (17,200 psi)
• 91d strength (21,000 psi)

7
(No Transcript)
8
Self-Consolidating Concrete
http//selfconsolidatingconcrete.org/video.htm
9
J-Ring Test for SCC
10
(No Transcript)
11
Reactive-Powder Concrete (RPC)
12
Reactive Powder Concrete