List characteristics of type III concrete:
Highest early strength due to high C3S and high blaine fineness. Good for pavement and concrete
List characteristics of type V concrete:
best for extreme sulfate environments because of low C3A
List characteristics of type IV concrete:
best for massive elements since it needs a lower heat of hydration. Lowest C3S, blaine fineness, and low C3A. However, low strength
List characteristics of type II concrete:
If type IV is not available, IIMH can be used for massive elements since it has the next lowest heat of hydration.
Compare the initial strength of each type of concrete to the strength after years. After how many days does the strength hierarchy switch?
Initially, type III is strongest, then I, II and V and IV is the weakest.
After years, II, IV and V become the strongest followed by I and III is the weakest.
The intersection point where strength characteristics swap is around 90 days.
[SEE GRAPH]
How do the adiabatic temperature rise in mass concrete of each type of concrete compare?
Type III is highest followed by type I, II, then IV [SEE GRAPH]
What does each letter in number mean in the type of cement shorthand (IL(10)) mean?
I is type 1, L is limestone, 10 is percent of limestone
What are some typical applications for type I concrete?
Pavement on roads, bridges, warehouse floors, interior structures of buildings
What are some typical applications for type II concrete?
Fence posts, large concrete pipes, outdoor concrete
What are some typical applications for type IIMH concrete?
Structures in the sea, dams
What are some typical applications for type III concrete?
Cold or snowy environments, heavy traffic bridges, roads in high climate variability areas
What are some typical applications for type V concrete?
sea or high sulfate environment
Which type of concrete can be used in negligible, moderate, severe, and very severe sulfate conditions?
Negligible, NSR. Moderate, II or II(MH). Severe and very severe, V only.
Sulfate environment dictates which design parameters of concrete to maintain durability?
Max w/cm ratio, C3A and concrete type.
Describe the age vs visual rating for sulfate resistance graph by type.
V is more resistant than II which is more than I. Each visual rating decreases over time. Type II and I plateau after 12 years.
Describe the age vs visual rating for sulfate resistance graph by w/c.
The higher the w/c ratio, the quicker the visual rating score decreases.
What is the tricalcium aluminate limit for each of the concrete types?
I: NONE
II, II(MH) : 8
III: 15. for moderate sulfate resistance: 8. For high sulfate resistance: 5
IV (7): unless heat of hydration limit is met
V: (5) unless the sulfate limit is specified
