Materials 3
.
- 1.
After final rolling, the degree of compaction should be checked. The compated pavement shall have a density.
- A.
Equal to, or greater than 95% of the laboratory compacted density
- B.
Equal to, or greater than 97% of the laboratory compacted density
- C.
Equal to, or greater than 96% of the laboratory compacted density
- D.
Equal to, or greater than 94% of the laboratory compacted density
Correct Answer
A. Equal to, or greater than 95% of the laboratory compacted density -
- 2.
The control of the temperature during mixing and compaction is of great significance.
- A.
The strength of the resulting pavement
- B.
The amount of the asphalt cement content
- C.
The amount of aggregate content
- D.
Proper determination of the method of rolling
Correct Answer
A. The strength of the resulting pavement -
- 3.
Calibration of universal testing machine shall be done.
- A.
Once in a year
- B.
Every 6 months
- C.
Every 4 months
- D.
Once a month
Correct Answer
A. Once in a year -
- 4.
Minimum size of class B for stone masonry
- A.
300mm
- B.
400mm
- C.
800mm
- D.
500mm
Correct Answer
D. 500mm -
- 5.
Maximum slump for concrete class A
- A.
2"-5"
- B.
2"-4"
- C.
1"-2"
- D.
4"-9"
Correct Answer
B. 2"-4" -
- 6.
Maximum water-cement ratio for concrete class A
- A.
0.46
- B.
0.53
- C.
0.55
- D.
0.58
Correct Answer
B. 0.53 -
- 7.
In a certain soil the LL=30 and PL=45. The plasticity index
- A.
15
- B.
-15
- C.
75
- D.
Non plastic
Correct Answer
B. -15 -
- 8.
In immersion/ compression test the ratio of wet to dry density of the mix
- A.
Stability
- B.
Index retained strength
- C.
Bulk specific gravity
- D.
Percent compaction
Correct Answer
A. Stability -
- 9.
Minimum required percent compaction for subbase course?
- A.
98%
- B.
95%
- C.
100%
- D.
96%
Correct Answer
C. 100% -
- 10.
In determining the grade of steel use
- A.
Tensile strength
- B.
Yield strength
- C.
Shear strength
- D.
Bond
Correct Answer
B. Yield strength -
- 11.
The concrete admixtures used when the normal setting time is shortened by the higher temperature, preventing the formation of cold joint, reduce the incidence of thermal cracking and to maintain concrete workability during large pours or long ready-mix hauls.
- A.
Accelerators
- B.
Retarders
- C.
Superplasticizers
- D.
Air entraining admixtures
Correct Answer
B. Retarders -
- 12.
Angular coarse aggregate use for concrete mix will provide more.
- A.
Water content
- B.
Cement and water
- C.
Cement and fine aggregates
- D.
All of the above
Correct Answer
A. Water content -
- 13.
Required no. of representative core taken from each member of area in-place that is considered deficit
- A.
3
- B.
2
- C.
1
- D.
4
Correct Answer
A. 3 -
- 14.
Thickness determination of concrete cores shall be done at
- A.
4 measurements
- B.
9 measurements
- C.
6 measurements
- D.
8 measurements
Correct Answer
B. 9 measurements -
- 15.
No. of set of concrete cylinder sample taken for every 75 cu.m of concrete
- A.
1 set
- B.
2 set
- C.
Any of a and b
- D.
3 set
Correct Answer
A. 1 set -
- 16.
What will you recommend?
- A.
Reject
- B.
Recoring
- C.
Remove and replace
- D.
All of the above
Correct Answer
B. Recoring -
- 17.
Most eefective factor for strength of concrete
- A.
Water-cement ratio
- B.
Water, cement and fine aggregates
- C.
Cement plus water
- D.
Any of the above
Correct Answer
A. Water-cement ratio -
- 18.
Asphaltic materials use for treating an existing bituminous materials or cement concrete surface with bituminous materials
- A.
Prime coat
- B.
Tack coat
- C.
Seal coat
- D.
Any of the above
Correct Answer
B. Tack coat -
- 19.
Number of hours of concrete cylinder sample to be submitted to the laboratory before testing
- A.
24 hrs
- B.
48 hrs
- C.
12 hrs
- D.
72 hrs
Correct Answer
A. 24 hrs -
- 20.
Number of hours of immersion/compression test that the sample place in water
- A.
4 hrs
- B.
6 hrs
- C.
7 hrs
- D.
8 hrs
Correct Answer
A. 4 hrs -
- 21.
Required weight of sample for testing for coarse aggregates use for concreting
- A.
40 kg
- B.
50 kg
- C.
70 kg
- D.
80 kg
Correct Answer
C. 70 kg -
- 22.
Required weight of sample for testing for fine aggregates use for concreting
- A.
70 kg
- B.
50 kg
- C.
30 kg
- D.
40 kg
Correct Answer
B. 50 kg -
- 23.
The design thickness for PCCP is 200mm. The average thickness determination was taken and the result is 170mm. If you are a government materials engineer, what percent of contract price adjustment will you recommend?
- A.
70%
- B.
No payment
- C.
80%
- D.
85%
Correct Answer
B. No payment -
- 24.
The deficiency in concrete specimen was found out to be 19.5 percent. What is the adjust percent of contract price allowed.
- A.
80%
- B.
60%
- C.
70%
- D.
50%
Correct Answer
B. 60% -
- 25.
If there is a strength deficiency in the concrete specimens and it is not feasible or not advisable to obtain cores from the structure due to structural considerations, as a material engineer, what will you recommend?
- A.
Send letter to your superior for his decision
- B.
Recommend immediately adjusted price of payment with respect to the deficiency incurred
- C.
Both a and b
- D.
Tolerate strength deficiency
Correct Answer
B. Recommend immediately adjusted price of payment with respect to the deficiency incurred -
- 26.
In the construction of a 380 linear meter asphalt road, with a designed thickness of 5 cm, a width requirement of 3.05 m and a programmed quantity of bituminous mix of 135 tonnes, an asphalt core was taken after each full days operation. Result of thickness and density tests are as follows:Paving date Paving length (m) Thickness (cm) Density (gm/cu.m)Day 1 120 5.3 2.262Day 2 140 5.1 2.311Day 3 120 5.0 2.221
- A.
135 tonnes
- B.
134.85 tonnes
- C.
136 tonnes
- D.
134.58 tonnes
Correct Answer
B. 134.85 tonnes -
- 27.
The purpose of trial sections before subbase/base construction is started
- A.
To check the suitability of the materials
- B.
To check the efficiency of the equipment used
- C.
Construction method which is proposed to be used
- D.
All of the above
Correct Answer
D. All of the above -
- 28.
Tolerance of thickness layer for subbase course
- A.
+-10
- B.
+-20
- C.
+-15
- D.
+-25
Correct Answer
B. +-20 -
- 29.
Tolerance of thickness layer for base course
- A.
+-10
- B.
+-20
- C.
+-15
- D.
+-25
Correct Answer
A. +-10 -
- 30.
The moisture content of subbase/base material shall be adjusted prior to compaction by
- A.
Watering with approved sprinkle mounted on trucks
- B.
Drying out in order to obtain the required compactions
- C.
Either a or b
- D.
Removal and replacing another material
Correct Answer
C. Either a or b -
- 31.
Concrete used for this reinforced sections, railings and for filler in steel grid floors.
- A.
Class A
- B.
Class P
- C.
Class B
- D.
Class C
Correct Answer
A. Class A -
- 32.
Most specifications for concrete exposed to weathering require that water-cement ratio
- A.
0.46
- B.
0.55
- C.
0.53
- D.
0.58
Correct Answer
C. 0.53 -
- 33.
The process of producing a fill, subgrade, road base or road surface which is capable of withstanding the existing traffic under all weather and moisture conditions.
- A.
Soil stabilization
- B.
Use of admixtures
- C.
Both a and b
- D.
None of the above
Correct Answer
C. Both a and b -
- 34.
As an experience materials engineer, compacting 6" (15cm) thick layers of soil will require, how many passes.
- A.
10 to 20 passes
- B.
8-10 passes
- C.
15-20 passes
- D.
15-30 passes
Correct Answer
B. 8-10 passes -
- 35.
The significance test of soil, that will determine the potential straight of the soil
- A.
Grading
- B.
Soaked CBR
- C.
Plasticity
- D.
Abrasion loss
Correct Answer
B. Soaked CBR -
- 36.
The allowable tolerance permitted variation from design thickness of layer or aggregate base course
- A.
+-10
- B.
+-5
- C.
+-11
- D.
+-9mm
Correct Answer
A. +-10 -
- 37.
Moisture content determination of soil, gives the following result. weight of containers plus weight soil =120gms, weight of container =70gms, wieght of container plus dry soil = 108 gms. The moisture content will be;
- A.
30.20%
- B.
31.58%
- C.
31.70%
- D.
31.90%
Correct Answer
B. 31.58% -
- 38.
The weight of air-dried soil is 200 gms. The weight of mass of oven dried soil is 175 gms. Therefore, the hydroscopic moisture will be
- A.
14.29%
- B.
15.0%
- C.
14.50%
- D.
15.50%
Correct Answer
A. 14.29% -
- 39.
Not included in liquid limit determination
- A.
Balance, sensitive to 0.1gm
- B.
Liquid limit device
- C.
Extruder
- D.
Oven with temperature control
Correct Answer
C. Extruder -
- 40.
Liquid limit unsuitable materials exceed
- A.
80%
- B.
60%
- C.
75%
- D.
55%
Correct Answer
A. 80% -
- 41.
Plastic limit of unsuitable materials exceed
- A.
50%
- B.
55%
- C.
53%
- D.
54%
Correct Answer
B. 55% -
- 42.
Percent compaction of ordinary condition soil
- A.
90%
- B.
95%
- C.
85%
- D.
100%
Correct Answer
B. 95% -
- 43.
If the soil is compacted with higher compactive effort, the curve will move up and to the left. This means that the
- A.
Optimum moisture will decrease and maximum dry density will increase
- B.
Optimum moisture will increase and maximum dry density will increase
- C.
The maximum dry density will decrease and the optimum moisture content will increase
- D.
The maximum dry density will decrease and the optimum moisture content will decrease
Correct Answer
A. Optimum moisture will decrease and maximum dry density will increase -
- 44.
You are an experience material engineer of your firm. During compaction you found out that soil is too wet. What economical recommendation will you give
- A.
Reject the soil
- B.
Remove and replace the soil
- C.
Continuos compaction
- D.
Scarify and dry the soil by exposing it to air under suitable conditions
Correct Answer
D. Scarify and dry the soil by exposing it to air under suitable conditions -
- 45.
Clay when removed from the borrow pits come out in the form of chunks. If you are the assigned material engineer in the field, what is the most suitable compacting equipment will you recommend?
- A.
Tandem roller
- B.
Vibratory roller
- C.
Pneumatic tired roller
- D.
Sheeps-foot roller
Correct Answer
D. Sheeps-foot roller -
- 46.
The term "silty" is applied to fine materials having plasticity index of
- A.
10 or less
- B.
11 or more
- C.
12
- D.
13
Correct Answer
A. 10 or less -
- 47.
The term clayey is applied to fine material having plasticity index of
- A.
10
- B.
11 or greater
- C.
9 or less
- D.
10 or less
Correct Answer
B. 11 or greater -
- 48.
The layer used in a pavement system to reinforce and protect the subgrade or subbase
- A.
Basement soil
- B.
Embankment foundation
- C.
Embankment
- D.
Base
Correct Answer
D. Base -
- 49.
Plasticity index of selected borrow for topping
- A.
Not more than 12
- B.
Not more than 8
- C.
Not more than 6
- D.
Not more than 10
Correct Answer
C. Not more than 6 -
- 50.
Atleast one group of three in-situ density tests shall be carried out for each __ of each layer of compacted fill.
- A.
300 sq.m
- B.
450 sq.m
- C.
330 sq.m
- D.
500 sq.m
Correct Answer
D. 500 sq.m -
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Current Version
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Aug 16, 2016Quiz Edited by
ProProfs Editorial Team -
Aug 16, 2016Quiz Created by
Matthewsdizon
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