LADOTD PCC PLANT
INSPECTION EXAM QUESTIONS
AND ANSWERS 2026 - 2027
the master proportion table - ANSWERS-What is the water cement
ratio taken directly from when designing a concrete mixture?
yield, cement factory, water cement ratio, approved material sources,
cement Type, fly ash type, admixture types, special additives, MATT
codes and trial mixes - ANSWERS-Mix designs are accepted by the
department based on the mix proposal meeting spec requirements
for...
a set of three cylinders for each of 3, 7, and 28 day breaks is required
- ANSWERS-What are the cylinder requirements when trial mixes are
required, and cylinders are prepared for compressive strength testing?
the PCC Mix Design form for the mixture - ANSWERS-When
required, the results of trial mixes for a concrete mixture must be
recorded on what?
the PCC plant report - ANSWERS-What form is used to calculate
batch weight adjustments?
53 lbs - ANSWERS-If pounds of aggregate/cu yd (SSD) is 1174 and
the corrected weight is 1227, what is the amount of free water?
,10.8 gallons - ANSWERS-How many gallons of water is in 90lbs of
water
75% of Max water allowable is taken - ANSWERS-How do you
determine the minimum amount of mixing water to be added at the
plant?
add one gallon per CY of concrete - ANSWERS-How do you increase
the slump one inch?
0.27 cu ft/cu yd of concrete - ANSWERS-Each percentage of
entrained air in the concrete mixture will increase the absolute water
volume by...
pouring early in the AM, & substituting ice for water - ANSWERS-
What is an effective way of controlling the temperature of plastic
concrete?
9.6 gallons - ANSWERS-If 10 lbs per cubic yard is to be substituted
as part of the mixing water, how many gallons of ice are to be used
for an 8 yd batch?
a truck mixer - ANSWERS-What are concrete components
completely mixed by at a batch plant? no
, usually completely mixed by a stationary mixer, unless partial mixing
in a mixing truck is allowed - ANSWERS-How are concrete
components mixed at a central mix plant?
contractor's Certified concrete technician - ANSWERS-Who is
responsible for quality control of concrete produced for DOTD?
the contractor - ANSWERS-Who initiates the PCC plant report?
daily - ANSWERS-How often must concrete aggregate control charts
be updated?
for new mix designs containing fly ash as a partial replacement for
cement, for new mix designs containing recycled Portland cement
concrete coarse aggregate, and for mixed designs with materials not
noted in the project specs - ANSWERS-When are trial mixes
required?
the materials sampling manual - ANSWERS-DOTD Designations: S-
101 (Aggregates and Aggregate Mixtures), S-102 (Mineral Filler,
Portland Cement and Hydraulic Lime) and S-301 (Fresh Concrete) are
requirements for sampling Portland cement concrete or it's
components and are found in...
the cement or fly ash must not be accepted - ANSWERS-What
happens if cement or fly ash arrives at the plant without the proper
seals?
INSPECTION EXAM QUESTIONS
AND ANSWERS 2026 - 2027
the master proportion table - ANSWERS-What is the water cement
ratio taken directly from when designing a concrete mixture?
yield, cement factory, water cement ratio, approved material sources,
cement Type, fly ash type, admixture types, special additives, MATT
codes and trial mixes - ANSWERS-Mix designs are accepted by the
department based on the mix proposal meeting spec requirements
for...
a set of three cylinders for each of 3, 7, and 28 day breaks is required
- ANSWERS-What are the cylinder requirements when trial mixes are
required, and cylinders are prepared for compressive strength testing?
the PCC Mix Design form for the mixture - ANSWERS-When
required, the results of trial mixes for a concrete mixture must be
recorded on what?
the PCC plant report - ANSWERS-What form is used to calculate
batch weight adjustments?
53 lbs - ANSWERS-If pounds of aggregate/cu yd (SSD) is 1174 and
the corrected weight is 1227, what is the amount of free water?
,10.8 gallons - ANSWERS-How many gallons of water is in 90lbs of
water
75% of Max water allowable is taken - ANSWERS-How do you
determine the minimum amount of mixing water to be added at the
plant?
add one gallon per CY of concrete - ANSWERS-How do you increase
the slump one inch?
0.27 cu ft/cu yd of concrete - ANSWERS-Each percentage of
entrained air in the concrete mixture will increase the absolute water
volume by...
pouring early in the AM, & substituting ice for water - ANSWERS-
What is an effective way of controlling the temperature of plastic
concrete?
9.6 gallons - ANSWERS-If 10 lbs per cubic yard is to be substituted
as part of the mixing water, how many gallons of ice are to be used
for an 8 yd batch?
a truck mixer - ANSWERS-What are concrete components
completely mixed by at a batch plant? no
, usually completely mixed by a stationary mixer, unless partial mixing
in a mixing truck is allowed - ANSWERS-How are concrete
components mixed at a central mix plant?
contractor's Certified concrete technician - ANSWERS-Who is
responsible for quality control of concrete produced for DOTD?
the contractor - ANSWERS-Who initiates the PCC plant report?
daily - ANSWERS-How often must concrete aggregate control charts
be updated?
for new mix designs containing fly ash as a partial replacement for
cement, for new mix designs containing recycled Portland cement
concrete coarse aggregate, and for mixed designs with materials not
noted in the project specs - ANSWERS-When are trial mixes
required?
the materials sampling manual - ANSWERS-DOTD Designations: S-
101 (Aggregates and Aggregate Mixtures), S-102 (Mineral Filler,
Portland Cement and Hydraulic Lime) and S-301 (Fresh Concrete) are
requirements for sampling Portland cement concrete or it's
components and are found in...
the cement or fly ash must not be accepted - ANSWERS-What
happens if cement or fly ash arrives at the plant without the proper
seals?
