CSLB Concrete C8 License Practice Test -2 Questions With Correct Answers

CSLB Concrete C8 License Practice Test #2
Questions With Correct Answers


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




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 attains
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___________ percentage of the minimum required strength. - CORRECT
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ANSWER✔✔-85


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 ANSWER✔✔-
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Retarders


Which of the following are the general types of vibrating needles that are in use?
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- CORRECT ANSWER✔✔-ALL ANSWERS!
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,-Internal vibrators |




-Immersion vibrators |




-Surface vibrators |




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




-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 deck is
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______________lbs/cu yd. - CORRECT ANSWER✔✔-675 | | | |




The amount of free water used in concrete shall not exceed ____________
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pounds per cubic yard of concrete. - CORRECT ANSWER✔✔-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 ANSWER✔✔-| | | | | | | | | |


Steel dowels |

, Which of the following is NOT an example of blended cement? - CORRECT
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ANSWER✔✔-Combination of silica fume and chlorine fluoride | | | | | |




Explanation:
Blended cement is a combination of either Type || or Type V cement with any of
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the SCM
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Which of the following is a line at which the face of the curb meets the top of the
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payment? - CORRECT ANSWER✔✔-Control Joint
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Which of the following is NOT used as concrete chemicals? - CORRECT
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ANSWER✔✔-Abrasion bonding compound | |




Explanation:
Concrete curing compound and polymer bonding agent are both concrete
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chemicals.


The admixtures that are used in concrete to improve durability in freeze/thaw
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environments are ________________. - CORRECT ANSWER✔✔-Air entrainment
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admixtures


The fly ash which is used as SCM has the specific gravity ___________________. -
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CORRECT ANSWER✔✔-1.9 - 2.8
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