EXAM 2025 ORGANIZED QUESTIONS
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A beam is primarily subject to compression while a column is
primarily subject to shear. True or False - THE CORRECT ANSWER-
False.
Beam is subject to Flexure, column is subject to compression.
The best place to look up definitions in ACI 318-14 is: - THE
CORRECT ANSWER-Chapter 2
Foundations cast at the same elevation as the soil grade are
known as: - THE CORRECT ANSWER-Shallow
What causes concrete to set and become hardened? - THE CORRECT
ANSWER-Hydration
Cement forming chemical bonds with water molecules, which
sets things in motion to become an extremely hardened
material. - THE CORRECT ANSWER-Hydration Process
, In general, how long does it take for concrete to move from a
plastic state to a hardened state, depending on weather and
admixtures? - THE CORRECT ANSWER-30 minutes to 5 hours
Many project specifications consider concrete rejectable after it
has bee what? - THE CORRECT ANSWER-Batched for 90 minutes
Hydration is "exothermic", meaning what? - THE CORRECT ANSWER-
It produces heat.
What are pozzolans? - THE CORRECT ANSWER-siliceous or
siliceous/aluminous materials which have little to no
cementitious value alone; react with lime and water to form a
product similar to C-S-H.
Aggregates not conforming to ASTM C33 or C330 must be
what? - THE CORRECT ANSWER-Shown by test or actual service to
produce concrete of adequate strength and durability and
approved by the building official.
Aggregates make up what percent of concrete? - THE CORRECT
ANSWER-60-80%
Pumice and tuff are considered what kind of aggregate? - THE
CORRECT ANSWER-Lightweight