University of Michigan, TCAUP Structures II Slide 1/12 Architecture 324 Structures II Reinforced Concrete • Material Properties University of Michigan, TCAUP Structures II Slide 2/12 Constituents of Concrete • Aggregate • Cement • Water Course aggregate ~ 1.5” (large) Course aggregate ~ 3/8” (small) Fine aggregate (Sand) ≤ 1/4” Photos by Emadrazo
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University of Michigan, TCAUP Structures II Slide 1/12
Architecture 324
Structures II
Reinforced Concrete
• Material Properties
University of Michigan, TCAUP Structures II Slide 2/12
Constituents of Concrete
• Aggregate• Cement• Water
Course aggregate~ 1.5” (large)
Course aggregate~ 3/8” (small)
Fine aggregate(Sand)≤ 1/4”
Photos by Emadrazo
University of Michigan, TCAUP Structures II Slide 3/12
Constituents of Concrete
• Aggregate• Cement• Water
Characteristics:
• Abrasion resistance• Freezing resistance• Sulfate resistance• Alkali resistance• Shape and texture• Grading• Fine agg. degradation• Void content• Density • Moisture absorption• Flexural strength
crushed stone
smooth “river rock”
University of Michigan, TCAUP Structures II Slide 4/12
Cement Types• Type 1
normal portland cement. Type 1 is a general use cement.
• Type 2is used for structures in water or soil containing moderate amounts of sulfate, or when heat build-up is a concern.
• Type 3high early strength. Used when high strength are desired at very early periods.
• Type 4low heat portland cement. Used where the amount and rate of heat generation must be kept to a minimum.
• Type 5Sulfate resistant portland cement. Used where water or soil is high in alkali.
• Types IA, IIA and IIIA are cements used to make air-entrained concrete.
Constituents of Concrete
• Aggregate• Cement• Water
Ingredients:• Limestone• Cement rock• Clay• Iron ore• + (after firing and grinding)• gypsum
University of Michigan, TCAUP Structures II Slide 5/12
Cast and autoclaved in large slabs then cut to sizeLightweight, good thermal resistance,transpires moisture, fireproof, sound insulation, easily cut on site, erected as masonry
University of Michigan, TCAUP Structures II Slide 12/12