COSC 253 Final Carlson TAMU UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Which Division in the CSI does concrete belong? - CORRECT ANSWER - Division #3
What are the 5 basic characteristics of concrete? - CORRECT ANSWER - -Does not burn
easily
-Can be used for many purposes
-Exterior finish=interior finish
-Great compression strength
-50+ years building
What is the composition of concrete? - CORRECT ANSWER - Air
Portland cement
Coarse aggregate
Fine aggregate
Water
What is the term used when steel is embedded into the concrete? - CORRECT ANSWER -
Reinforced concrete
What does embedding steel into the concrete do? - CORRECT ANSWER - Increase tensile
strength
When concrete cures, it gives off heat and forms bonds that hold the aggregate together. What is
this called? - CORRECT ANSWER - Heat of Hydration
,What is the most commonly used ASTM? - CORRECT ANSWER - ASTM C150 -
Portland Cement
What are the 5 Types of Portland Cement and their Classifications? - CORRECT
ANSWER - Type I: Normal
Type II: Moderate
Type III: High Early Strength
Type IV: Low Heat
Type V: Sulfate Resisting
What type of Portland Cement can be described as general-purpose Portland Cement suitable for
most uses when the special properties of other types are not required? - CORRECT
ANSWER - Type I: Normal
What type of Portland Cement takes 28 days to cure? - CORRECT ANSWER - Type I:
Normal
What type of Portland Cement can be described as Portland Cement used where precaution
against Moderate Sulfate attack is important, as in drainage structures where Sulfate
Concentrations in groundwater are higher than normal - CORRECT ANSWER - Type II:
Moderate
What type of Portland Cement can be described as Portland Cement used when high strengths
are desired at a very early time, usually a weak or less - CORRECT ANSWER - Type III:
High Early Strength
What type of Portland Cement can be described as a special Portland Cement for use where the
amount and rate of heat generated during Hydration must be kept to a minimum - CORRECT
ANSWER - Type IV: Low Heat
What type of Portland Cement is intended for use in large masses of concrete? - CORRECT
ANSWER - Type IV: Low Heat
,What type of Portland Cement can be described as special Portland Cement intended for use only
in construction exposed to severe Sulfate action, such as in some western states having soils and
waters of high Alkali content - CORRECT ANSWER - Type V: Sulfate Resisting
What does "A" represent after "Type"? - CORRECT ANSWER - Air Entraining
What is another name for a fine (small) aggregate? Smaller than ¼ - CORRECT
ANSWER - Sand
What is another name for a coarse aggregate? Larger than ¼ - CORRECT ANSWER -
Gravel or Crushed Stone
In general, the maximum aggregate size should not be greater than __ of the clear spacing
between bars OR __ depth of the slab - CORRECT ANSWER - ¾, ⅓
Water reducing admixtures do what 3 things? - CORRECT ANSWER - Improve
workability
Lower water content
Makes cement efficient
Retarder admixtures do what 3 things? - CORRECT ANSWER - concrete cures slower,can
be applied to surface of concrete , may act as water reducer
Accelerator admixtures do what 4 things? - CORRECT ANSWER - concrete cures faster,
removes forms early, load concrete sooner, permit work in cold weather
Air entraining agent admixtures do what 3 things? - CORRECT ANSWER - increase
workability, insulate concrete, uses slightly less water and aggregate
, Can you add color to concrete? yes or no - CORRECT ANSWER - yes
___ means the concrete is formed and cured in a factory, transported to the construction site, and
erected as rigid components - CORRECT ANSWER - Precast
___ OR site cast means the concrete is formed and poured on the construction site. The concrete
mixture must be transported to the site or mixed at the site. - CORRECT ANSWER - Cast-
in-Place
Out of Precast and Cast-in-Place methods, which requires formwork? - CORRECT
ANSWER - Cast-in-Place
Who usually selects form liners? - CORRECT ANSWER - the Architects
Forms are made of what 3 materials? - CORRECT ANSWER - wood, metal, plastic
Formwork that is removed after the concrete has been poured and completed its hydration
process is... ? - CORRECT ANSWER - Temporary
Formwork that remains a part of the building structure after the concrete has been poured and
completed its hydration process is... ? - CORRECT ANSWER - Permanent
What is the name of the units that form the concrete and then remain in place permanently as
thermal insulation? - CORRECT ANSWER - Insulating Concrete Forms
What are Insulating Concrete Forms usually made out of? - CORRECT ANSWER -
Styrofoam
A level surface of concrete that lies directly on the ground is known as... ? - CORRECT
ANSWER - Slab on Grade (SOG)
ACTUAL Exam Questions and CORRECT
Answers
Which Division in the CSI does concrete belong? - CORRECT ANSWER - Division #3
What are the 5 basic characteristics of concrete? - CORRECT ANSWER - -Does not burn
easily
-Can be used for many purposes
-Exterior finish=interior finish
-Great compression strength
-50+ years building
What is the composition of concrete? - CORRECT ANSWER - Air
Portland cement
Coarse aggregate
Fine aggregate
Water
What is the term used when steel is embedded into the concrete? - CORRECT ANSWER -
Reinforced concrete
What does embedding steel into the concrete do? - CORRECT ANSWER - Increase tensile
strength
When concrete cures, it gives off heat and forms bonds that hold the aggregate together. What is
this called? - CORRECT ANSWER - Heat of Hydration
,What is the most commonly used ASTM? - CORRECT ANSWER - ASTM C150 -
Portland Cement
What are the 5 Types of Portland Cement and their Classifications? - CORRECT
ANSWER - Type I: Normal
Type II: Moderate
Type III: High Early Strength
Type IV: Low Heat
Type V: Sulfate Resisting
What type of Portland Cement can be described as general-purpose Portland Cement suitable for
most uses when the special properties of other types are not required? - CORRECT
ANSWER - Type I: Normal
What type of Portland Cement takes 28 days to cure? - CORRECT ANSWER - Type I:
Normal
What type of Portland Cement can be described as Portland Cement used where precaution
against Moderate Sulfate attack is important, as in drainage structures where Sulfate
Concentrations in groundwater are higher than normal - CORRECT ANSWER - Type II:
Moderate
What type of Portland Cement can be described as Portland Cement used when high strengths
are desired at a very early time, usually a weak or less - CORRECT ANSWER - Type III:
High Early Strength
What type of Portland Cement can be described as a special Portland Cement for use where the
amount and rate of heat generated during Hydration must be kept to a minimum - CORRECT
ANSWER - Type IV: Low Heat
What type of Portland Cement is intended for use in large masses of concrete? - CORRECT
ANSWER - Type IV: Low Heat
,What type of Portland Cement can be described as special Portland Cement intended for use only
in construction exposed to severe Sulfate action, such as in some western states having soils and
waters of high Alkali content - CORRECT ANSWER - Type V: Sulfate Resisting
What does "A" represent after "Type"? - CORRECT ANSWER - Air Entraining
What is another name for a fine (small) aggregate? Smaller than ¼ - CORRECT
ANSWER - Sand
What is another name for a coarse aggregate? Larger than ¼ - CORRECT ANSWER -
Gravel or Crushed Stone
In general, the maximum aggregate size should not be greater than __ of the clear spacing
between bars OR __ depth of the slab - CORRECT ANSWER - ¾, ⅓
Water reducing admixtures do what 3 things? - CORRECT ANSWER - Improve
workability
Lower water content
Makes cement efficient
Retarder admixtures do what 3 things? - CORRECT ANSWER - concrete cures slower,can
be applied to surface of concrete , may act as water reducer
Accelerator admixtures do what 4 things? - CORRECT ANSWER - concrete cures faster,
removes forms early, load concrete sooner, permit work in cold weather
Air entraining agent admixtures do what 3 things? - CORRECT ANSWER - increase
workability, insulate concrete, uses slightly less water and aggregate
, Can you add color to concrete? yes or no - CORRECT ANSWER - yes
___ means the concrete is formed and cured in a factory, transported to the construction site, and
erected as rigid components - CORRECT ANSWER - Precast
___ OR site cast means the concrete is formed and poured on the construction site. The concrete
mixture must be transported to the site or mixed at the site. - CORRECT ANSWER - Cast-
in-Place
Out of Precast and Cast-in-Place methods, which requires formwork? - CORRECT
ANSWER - Cast-in-Place
Who usually selects form liners? - CORRECT ANSWER - the Architects
Forms are made of what 3 materials? - CORRECT ANSWER - wood, metal, plastic
Formwork that is removed after the concrete has been poured and completed its hydration
process is... ? - CORRECT ANSWER - Temporary
Formwork that remains a part of the building structure after the concrete has been poured and
completed its hydration process is... ? - CORRECT ANSWER - Permanent
What is the name of the units that form the concrete and then remain in place permanently as
thermal insulation? - CORRECT ANSWER - Insulating Concrete Forms
What are Insulating Concrete Forms usually made out of? - CORRECT ANSWER -
Styrofoam
A level surface of concrete that lies directly on the ground is known as... ? - CORRECT
ANSWER - Slab on Grade (SOG)
