A board pushed vertically into a pile just above the sampling point aids in preventing further segregation. A) True B) false - Answer A) True
A relative yield value of mire than 1.000 indicates the batch is "short of it's designated volume". A) True B) False - Answer B) False
An excess of con...
CCIL TEST QUESTIONS AND CORRECT ANSWERS
A board pushed vertically into a pile just above the sampling point aids in preventing
further segregation. A) True B) false - Answer A) True
A relative yield value of mire than 1.000 indicates the batch is "short of it's designated
volume". A) True B) False - Answer B) False
An excess of concrete protruding approximately ________ mm above the top of the
measure after consolidation is optimum. A) 1 B) 2 C) 3 D) none of the above - Answer
C) 3
Bleeding and expansion of grout is performed in a container of _________ volume. A)
10 +/- 1 mL B) 200 +/- 5 mL C) 1000 +/- 10 mL - Answer B) 200 +/- 5 mL
Bottom diameter of the slump cone is to be _______ ? A) 100 +/- 1 mm B) 200 +/- 3 mm
C) 300 +/- 3 mm D) none of the above - Answer B) 200 +/- 3 mm
Calibration of the thermometer for testing freshly mixed concrete must be compared
between readings at least ________ apart. A)
5.0 degrees Celsius B) 10 degrees Celsius C) 15 degrees Celsius D) 20 degrees
Celsius - Answer C) 15 degrees Celsius
Coarse aggregate shall be shipped in the following: a) Rubbermaid container
b) secure container, or sample bag c) ziplock bags d) Ziploc bags, and a secure
container - Answer b) secure container, or sample bag
Compressive strength is determined from the average of two cubes tested at each
specified age. A) True B) False - Answer B) False
Concrete specimens to be shipped from the field to the lab shall be transported only
after curing for a minimum of _______ hours. A) 20 B) 21 C) 24 D) 28 - Answer A) 20
Concrete with a specified slump of 40 mm or less shall be vibrated. A) True B) False -
A) True
Consolidate flowing super plasticized concrete having a slump is greater than 180 mm
with _______ % of the number of strokes per layer. A) 10 B) 20 C) 30 D) 40 - Answer
D) 40
Core samples are to be submerged in water for ______ to _____ hours immediately
prior to the compression test. A) 8, 18 B) 16, 28 C) 32, 40 D) 40, 48 - D) 40, 48
Demoulding time may be extended to a maximum of _______ hours for concrete having
a specified of less than 35MPa. A) 36 B) 48 C) 60 D) 76 - Answer D) 76
, Duplicate tests on two portions of the same sample should not very by more than
________ mm. A) 1 B) 5 C) 10 D) 15 - C) 10
Each layer is to be rodded ________ times. A) 15 B) 20 C) 25 D) none of the above -
Answer C) 25
Each sample or every container shall be accompanied by a sample tag, preferably in
the container, having the following information choose all of which apply: a) name of the
person who sampled it b) name of the person who submitted it c) source of supply d)
date it was taken e) company name - a) name of the person who sampled it b) name of
the person who submitted it c) source of supply d) date it was taken e) company name
Every precaution shall be used when obtaining samples so that samples reflect the
___________ and ____________ of materials they represent. A) condition b) moisture
c) nature d) structure - A) condition c) nature
For the molding if 3 cylinders, the individual samples to be used to determine the
strength or uniformity of mixed concrete shall be a minimum of ________ when 100 mm
x 200 mm cylinders are used. A) 10 L B) 15 L C) 20 L D) 30 L - Answer C) 20 L
How accurate must the reference thermometer be? A) 1.0 degrees Celsius B) 0.1
degrees Celsius C) 0.2 degrees Celsius D) 0.5 degrees Celsius - Answer C) 0.2
degrees Celsius
How accurate must the temperature measuring device be? A) 1.0 degrees Celsius B)
0.1 degrees Celsius C) 0.5 degrees Celsius D) 5.0 degrees Celsius - Answer A) 1.0
degrees Celsius
How many kilograms of aggregate needs to be collected for a nominal size aggregate of
20 mm? A) 10 B) 15 C) 25 D) 50 - Answer C) 25
If vibration is the consolidation method being used the mould shall be filled and vibrated
in _________ equal layers. A) 1 B) 2 C) 3 D) 4 - Answer B) 2
Internal vibrators are to have a frequency of ________ Hz or greater. A) 100 B) 120 C)
150 D) 200 - Answer B) 120
Jigging is applicable for aggregate having a nominal size of ________ to ________ mm.
A) 25, 56 B) 50, 60 C) 56, 80 D) none of the above - Answer C) 56, 80
Lab test specimens shall be stored at a temperature of: A) 23 +/- 2 degrees celsius B)
20 +/- 4 degrees celsius C) 24 +/- 4 degrees celsius D) 23 +/- 1 degrees celsius -
Answer A) 23 +/- 2 degrees celsius
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