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1. REINFORCED CONRETE
(1)
(CE411)
Chapter 2
Materials
Instructor:
Eng. Abdallah Odeibat
Civil Engineer, Structures , M.Sc.
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2. CONCRETE COMPONENTS (CEMENT )
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Classification Characteristics Applications
Type I General purpose Fairly high C3S content for
good early strength
development
General construction
(most buildings,
bridges, pavements,
precast units, etc)
Type II Moderate sulfate
resistance
Low C3A content (<8%) Structures exposed to
soil or water containing
sulfate ions
Type III High early strength Ground more finely, may have
slightly more C3S
Rapid construction,
cold weather
concreting
Type IV Low heat of hydration
(slow reacting)
Low content of C3S (<50%)
and C3A
Massive structures
such as dams.
Type V High sulfate resistance Very low C3A content (<5%) Structures exposed to
high levels of sulfate
ions
White White color No C4AF, low MgO Decorative (otherwise
has properties similar
to Type I)

3. Tests required for Quality
Aggregate used in concrete mix
10 % fines
Impact Value
Dry Shrinkage
Organic
Impurities
Potential
reactivity
Shell Content
Coal and Lignite
Sieve Analysis
Specific gravity and
Absorption
Abrasion
Flakiness and Elongation
Soundness
Sulphate and Chloride
Content
Sand Equivalent
Clay Lumps
CONCRETE COMPONENTS (AGGREGATES)
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4. CONCRETE PROPERTIES (W/C RATIO)
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5. CONCRETE PROPERTIES (CURING)
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6. CONCRETE PROPERTIES (STRENGTH WITH
TIME)
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7. CONCRETE PROPERTIES (STRESS-STRAIN)
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8. CONCRETE PROPERTIES (ELASTIC
MODULUS)
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9. CONCRETE PROPERTIES (IN TENSION)
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10. REINFORCEMENT STEEL PROPERTIES
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11. REINFORCEMENT STEEL PROPERTIES
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12. REINFORCEMENT STEEL PROPERTIES
Imperial Metric
size
Linear Mass
Density
Nominal diameter Nominal area
bar size lb
⁄ft (kg/m) (in) (mm) (in²) (mm²)
#2 #6 0.167 0.249 0.250 = 2⁄8
6.35 0.05 32
#3 #10 0.376 0.561 0.375 = 3⁄8
9.525 0.11 71
#4 #13 0.668 0.996 0.500 = 4⁄8
12.7 0.2 129
#5 #16 1.043 1.556 0.625 = 5⁄8
15.875 0.31 200
#6 #19 1.502 2.24 0.750 = 6⁄8
19.05 0.44 284
#7 #22 2.044 3.049 0.875 = 7⁄8
22.225 0.6 387
#8 #25 2.67 3.982 1 25.4 0.79 509
#9 #29 3.4 5.071 1.128 28.65 1 645
#10 #32 4.303 6.418 1.27 32.26 1.27 819
#11 #36 5.313 7.924 1.41 35.81 1.56 1006
#14 #43 7.65 11.41 1.693 43 2.25 1452
#18 #57 13.6 20.284 2.257 57.3 4 2581
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13. REINFORCEMENT STEEL PROPERTIES
 Grade
Three grades are defined, with metric equivalents:
13
inch-pound
grade
metric
grade
Minimum Yield
Strength
in (psi) in (MPa)
Grade 40 Grade 280 40,000 280
Grade 60 Grade 420 60,000 420
Grade 75 Grade 520 75,000 520

14. REINFORCEMENT STEEL PROPERTIES
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15. WHY STEEL ????
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