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CIM 3100 Test 1 questions and answers verified 2024
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CIM 3100 Test 1 questions and answers verified 2024
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CIM 3100 Test 1The well-graded aggregate is always preferred in most types of concretes; this
is mainly due to ______ - correct answer ✔economy and workability
Well-graded aggregate is not good for ______ - correct answer ✔strength
and durability
An increase in the maximum size of coarse aggregate in concrete would
increase ______ - correct answer ✔segregation
An increase in the maximum size of coarse aggregate would ______ the total
aggregate content in
concrete. - correct answer ✔reduce
The strength of concrete ______ as the water/ cement ratio decreases -
correct answer ✔increases
An increase in the maximum size of coarse aggregate would ______ the
paste demand of concrete - correct answer ✔reduce
An increase in the maximum size of coarse aggregate will _____ the demand
for air entrainment - correct answer ✔reduce
An increase in the maximum size of coarse aggregate would _____ the drying
shrinkage of concrete - correct answer ✔reduce
Mixtures that have lower fine particles (e.g., sand) will be ___ as compared
with normal concrete - correct answer ✔more difficult to finish
, Mixtures that have higher fine particles will be _______ as compared with
normal concrete - correct answer ✔easier to finish
Flat elongated aggregate would _______ the workability - correct answer
✔reduce
An increase in W /Cm would increase the _________ of concrete - correct
answer ✔workability
Bigger aggregate ______ workability - correct answer ✔increases
Pozzolanic reaction in concrete will increase the long-term ______ of
hardened concrete - correct answer ✔density, strength, durability
Which of the following materials is a self-cementing material? _______ -
correct answer ✔class c fly ash, slag, pozzolans
Which SCMs are not self-cementing - correct answer ✔class f fly ash and
silica fume
Which of the following supplementary cementitious materials will significantly
reduce the workability of
fresh concrete? _________ - correct answer ✔silica fume
The use of SCMs (e.g., fly ash or slag) would _______ the setting of concrete
- correct answer ✔decelerate
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