CSLB Concrete C8 License Practice
Test #2
The maximum size of the conduit or pipe shall NOT exceed _______ of the thickness of the concrete.
✔✔ correct answer 1/3
Which of the following tests for concrete is conducted at the site/field? ✔✔ correct answer Color
Test
Explanation:
Rest of the above are laboratory tests.
If the concrete compressive strength specified is less than 3600 psi, it has the option of being tested
at 28 days and is able to accept the concrete if it attains ___________ percentage of the minimum
required strength. ✔✔ correct answer 85
If the admixtures are used in concrete for the purpose of delayed setting and hardening of concrete,
they are called _____________? ✔✔ correct answer Retarders
Which of the following are the general types of vibrating needles that are in use? ✔✔ correct
answer ALL ANSWERS!
-Internal vibrators
-Immersion vibrators
-Surface vibrators
Concrete proportioning is done based on the facilities available at the site. Which are the general
proportioning methods used for concrete? ✔✔ correct answer ALL OF THESE
-Surface area method
-Mix design based on flexural strength
-Maximum destiny method
The minimum cementitious material that is required for concrete bridging deck is
______________lbs/cu yd. ✔✔ correct answer 675
, CSLB Concrete C8 License Practice
Test #2
The amount of free water used in concrete shall not exceed ____________ pounds per cubic yard of
concrete. ✔✔ correct answer 310
Explanation:
If the SCM are added, it can be increased to 20 pounds per each required 100 pounds of
cementitious material in excess of 550 pounds per cubic yard.
If the concrete curbs are to be constructed over the existing pavement, _______________ are used
to fix them to pavement. ✔✔ correct answer Steel dowels
Which of the following is NOT an example of blended cement? ✔✔ correct answer Combination of
silica fume and chlorine fluoride
Explanation:
Blended cement is a combination of either Type || or Type V cement with any of the SCM
Which of the following is a line at which the face of the curb meets the top of the payment? ✔✔
correct answer Control Joint
Which of the following is NOT used as concrete chemicals? ✔✔ correct answer Abrasion bonding
compound
Explanation:
Concrete curing compound and polymer bonding agent are both concrete chemicals.
The admixtures that are used in concrete to improve durability in freeze/thaw environments are
________________. ✔✔ correct answer Air entrainment admixtures
The fly ash which is used as SCM has the specific gravity ___________________. ✔✔ correct answer
1.9 - 2.8
Test #2
The maximum size of the conduit or pipe shall NOT exceed _______ of the thickness of the concrete.
✔✔ correct answer 1/3
Which of the following tests for concrete is conducted at the site/field? ✔✔ correct answer Color
Test
Explanation:
Rest of the above are laboratory tests.
If the concrete compressive strength specified is less than 3600 psi, it has the option of being tested
at 28 days and is able to accept the concrete if it attains ___________ percentage of the minimum
required strength. ✔✔ correct answer 85
If the admixtures are used in concrete for the purpose of delayed setting and hardening of concrete,
they are called _____________? ✔✔ correct answer Retarders
Which of the following are the general types of vibrating needles that are in use? ✔✔ correct
answer ALL ANSWERS!
-Internal vibrators
-Immersion vibrators
-Surface vibrators
Concrete proportioning is done based on the facilities available at the site. Which are the general
proportioning methods used for concrete? ✔✔ correct answer ALL OF THESE
-Surface area method
-Mix design based on flexural strength
-Maximum destiny method
The minimum cementitious material that is required for concrete bridging deck is
______________lbs/cu yd. ✔✔ correct answer 675
, CSLB Concrete C8 License Practice
Test #2
The amount of free water used in concrete shall not exceed ____________ pounds per cubic yard of
concrete. ✔✔ correct answer 310
Explanation:
If the SCM are added, it can be increased to 20 pounds per each required 100 pounds of
cementitious material in excess of 550 pounds per cubic yard.
If the concrete curbs are to be constructed over the existing pavement, _______________ are used
to fix them to pavement. ✔✔ correct answer Steel dowels
Which of the following is NOT an example of blended cement? ✔✔ correct answer Combination of
silica fume and chlorine fluoride
Explanation:
Blended cement is a combination of either Type || or Type V cement with any of the SCM
Which of the following is a line at which the face of the curb meets the top of the payment? ✔✔
correct answer Control Joint
Which of the following is NOT used as concrete chemicals? ✔✔ correct answer Abrasion bonding
compound
Explanation:
Concrete curing compound and polymer bonding agent are both concrete chemicals.
The admixtures that are used in concrete to improve durability in freeze/thaw environments are
________________. ✔✔ correct answer Air entrainment admixtures
The fly ash which is used as SCM has the specific gravity ___________________. ✔✔ correct answer
1.9 - 2.8
