REINFORCED CONCRETE DESIGN
EXAM 1QUESTIONS & ANSWERS
Concrete is a mixture of - ANSWERaggregate (gravel), sand, cement, and water
Material properties of concrete varies widely based on _________ of constituent
materials - ANSWERProportions
What are some constituent materials of concrete? - ANSWERSpecial cements,
light/heavyweight aggregates, admixtures (air entertaining, accelerating, retarding,
superplasticizers, waterproofing)
What does special curing material do? Is it a constituent material of concrete? -
ANSWERControls humidity and temperature after placement. It is a constituent
material.
Basic rules for R/C - ANSWER1. Enough concrete to carry axial load and flex.
compression
2. Use enough rebar in the right spot for tension
3. Assume R and C are ADEQUATELY BONDED so they act as a SINGLE structural
unit
Final deformation due to creep is _________ of original deflection - ANSWER2 - 3x
How much creep occurs in the first year? - ANSWER75%
What type of concrete structure does creep mostly apply to? - ANSWERHorizontal
beams and concrete columns (less so than beams)
Portland Cement Type I - ANSWERCommon, all-purpose: General construction
Portland Cement Type II - ANSWERLower heat of hydration, can withstand some
sulfate attack exposure
Portland Cement Type III - ANSWERHigh-early-strength cement with a HIGH heat of
hydration; is twice as strong as Type I in 24 hours; often used for shotcrete
Portland Cement Type IV - ANSWERLow heat cement that produces a concrete that
generates heat very slowly. Used for huge structures (think dams)
Portland Cement Type V - ANSWERCement used for concretes that are exposed to
high sulfate concentrations
EXAM 1QUESTIONS & ANSWERS
Concrete is a mixture of - ANSWERaggregate (gravel), sand, cement, and water
Material properties of concrete varies widely based on _________ of constituent
materials - ANSWERProportions
What are some constituent materials of concrete? - ANSWERSpecial cements,
light/heavyweight aggregates, admixtures (air entertaining, accelerating, retarding,
superplasticizers, waterproofing)
What does special curing material do? Is it a constituent material of concrete? -
ANSWERControls humidity and temperature after placement. It is a constituent
material.
Basic rules for R/C - ANSWER1. Enough concrete to carry axial load and flex.
compression
2. Use enough rebar in the right spot for tension
3. Assume R and C are ADEQUATELY BONDED so they act as a SINGLE structural
unit
Final deformation due to creep is _________ of original deflection - ANSWER2 - 3x
How much creep occurs in the first year? - ANSWER75%
What type of concrete structure does creep mostly apply to? - ANSWERHorizontal
beams and concrete columns (less so than beams)
Portland Cement Type I - ANSWERCommon, all-purpose: General construction
Portland Cement Type II - ANSWERLower heat of hydration, can withstand some
sulfate attack exposure
Portland Cement Type III - ANSWERHigh-early-strength cement with a HIGH heat of
hydration; is twice as strong as Type I in 24 hours; often used for shotcrete
Portland Cement Type IV - ANSWERLow heat cement that produces a concrete that
generates heat very slowly. Used for huge structures (think dams)
Portland Cement Type V - ANSWERCement used for concretes that are exposed to
high sulfate concentrations
