CSLB Concrete C8 License Practice Test -2 questions with answers

CSLB Concrete C8 License Practice Test #2
questions with answers

The maximum size of the conduit or pipe shall NOT exceed _______ of the
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thickness of the concrete. - CORRECT ANSWERS ✔✔1/3
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Which of the following tests for concrete is conducted at the site/field? -
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CORRECT ANSWERS ✔✔Color Test
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Explanation: ||




Rest of the above are laboratory tests.
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If the concrete compressive strength specified is less than 3600 psi, it has the
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option of being tested at 28 days and is able to accept the concrete if it
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attains ___________ percentage of the minimum required strength. - CORRECT
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ANSWERS ✔✔85
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If the admixtures are used in concrete for the purpose of delayed setting and
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hardening of concrete, they are called _____________? - CORRECT ANSWERS
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✔✔Retarders
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Which of the following are the general types of vibrating needles that are in
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use? - CORRECT ANSWERS ✔✔ALL ANSWERS!
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-Internal vibrators ||

,-Immersion vibrators ||




-Surface vibrators ||




Concrete proportioning is done based on the facilities available at the site.
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Which are the general proportioning methods used for concrete? - CORRECT
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ANSWERS ✔✔ALL OF THESE
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-Surface area method || ||




-Mix design based on flexural strength
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-Maximum destiny method || ||




The minimum cementitious material that is required for concrete bridging
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deck is ______________lbs/cu yd. - CORRECT ANSWERS ✔✔675
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The amount of free water used in concrete shall not exceed ____________ pounds
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per cubic yard of concrete. - CORRECT ANSWERS ✔✔310
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Explanation:
If the SCM are added, it can be increased to 20 pounds per each required 100
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pounds of cementitious material in excess of 550 pounds per cubic yard.
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If the concrete curbs are to be constructed over the existing pavement,
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_______________ are used to fix them to pavement. - CORRECT ANSWERS
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✔✔Steel dowels
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, Which of the following is NOT an example of blended cement? - CORRECT
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ANSWERS ✔✔Combination of silica fume and chlorine fluoride
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Explanation:
Blended cement is a combination of either Type || or Type V cement with any
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of the SCM
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Which of the following is a line at which the face of the curb meets the top of
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the payment? - CORRECT ANSWERS ✔✔Control Joint
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Which of the following is NOT used as concrete chemicals? - CORRECT
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ANSWERS ✔✔Abrasion bonding compound
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Explanation:
Concrete curing compound and polymer bonding agent are both concrete
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chemicals.
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The admixtures that are used in concrete to improve durability in
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freeze/thaw environments are ________________. - CORRECT ANSWERS ✔✔Air
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entrainment admixtures
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The fly ash which is used as SCM has the specific gravity ___________________. -
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CORRECT ANSWERS ✔✔1.9 - 2.8
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