Materials 3
Settings
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- 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
- 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
- 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
- 4.Minimum size of class B for stone masonry
- A.
300mm
- B.
400mm
- C.
800mm
- D.
500mm
- 5.Maximum slump for concrete class A
- A.
2"-5"
- B.
2"-4"
- C.
1"-2"
- D.
4"-9"
- 6.Maximum water-cement ratio for concrete class A
- A.
0.46
- B.
0.53
- C.
0.55
- D.
0.58
- 7.In a certain soil the LL=30 and PL=45. The plasticity index
- A.
15
- B.
-15
- C.
75
- D.
Non plastic
- 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
- 9.Minimum required percent compaction for subbase course?
- A.
98%
- B.
95%
- C.
100%
- D.
96%
- 10.In determining the grade of steel use
- A.
Tensile strength
- B.
Yield strength
- C.
Shear strength
- D.
Bond
- 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
- 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
- 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
- 14.Thickness determination of concrete cores shall be done at
- A.
4 measurements
- B.
9 measurements
- C.
6 measurements
- D.
8 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
- 16.What will you recommend?
- A.
Reject
- B.
Recoring
- C.
Remove and replace
- D.
All of the above
- 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
- 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
- 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
- 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
- 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
- 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
- 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%
- 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%
- 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
- 26.
- A.
135 tonnes
- B.
134.85 tonnes
- C.
136 tonnes
- D.
134.58 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
- 28.Tolerance of thickness layer for subbase course
- A.
+-10
- B.
+-20
- C.
+-15
- D.
+-25
- 29.Tolerance of thickness layer for base course
- A.
+-10
- B.
+-20
- C.
+-15
- D.
+-25
- 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
- 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
- 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
- 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
- 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
- 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
- 36.The allowable tolerance permitted variation from design thickness of layer or aggregate base course
- A.
+-10
- B.
+-5
- C.
+-11
- D.
+-9mm
- 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%
- 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%
- 39.Not included in liquid limit determination
- A.
Balance, sensitive to 0.1gm
- B.
Liquid limit device
- C.
Extruder
- D.
Oven with temperature control
- 40.Liquid limit unsuitable materials exceed
- A.
80%
- B.
60%
- C.
75%
- D.
55%
- 41.Plastic limit of unsuitable materials exceed
- A.
50%
- B.
55%
- C.
53%
- D.
54%
- 42.Percent compaction of ordinary condition soil
- A.
90%
- B.
95%
- C.
85%
- D.
100%
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 51.Roadway embankment in earth materials shall be placed in horizontal layer not exceeding ___, loose measurement and compacted as specified before next layer is placed.
- A.
150mm
- B.
200mm
- C.
300mm
- D.
250mm
- 52.Reduction of voids due to air being forced out of the soil pores
- A.
Consolidation
- B.
Compaction
- C.
Permeability
- D.
Capillarity
- 53.Initially when the water content is low, the soil is stiffed and difficult to compress. This leads to low densities. As the molding water increase, the soil becomes more workable resulting into higher compacted density because water act as ___.
- A.
A lubricant
- B.
A compactor
- C.
A compactive effort
- D.
A void reducer
- 54.In soil subsurface and surface exploration for flood control design of foundation condition, a soil sample was taken for field and laboratory tests. The tests required for soil was taken except,
- A.
Gradation
- B.
Abrasions
- C.
Water content
- D.
Atterberg limits
- 55.For determining the liquid limit, a special standard device is used. All dimensions of the device are fixed and the jarring is accomplished by turning the crank at the rate of ___ revolution/sec.
- A.
3
- B.
2
- C.
4
- D.
5
- 56.The moisture content when the groove is closed by ___ blows of the cup is defined as the liquid limit
- A.
20
- B.
25
- C.
30
- D.
35
- 57.
- A.
By pulverizing with a hammer
- B.
By submerging into the water
- C.
By cheaping
- D.
By visualizing
- 58.In road construction the excavated materials was 705,900 cu.m and the waste was 505,600 cu.m. How many grading compaction plasticity test are required.
- A.
134
- B.
150
- C.
140
- D.
146
- 59.
- A.
1/4"
- B.
1/8"
- C.
1/2"
- D.
3/16"
- 60.The following are the single visual and manual test used for the identification of fine grained soils in the field without the aid of laboratory equipment, except.
- A.
Dispersion
- B.
Water mobility
- C.
Plasticity
- D.
Grading
- 61.An experience field material engineer can easily identify whether the soil sample is plastic without the aid of laboratory equipment.
- A.
By air drying
- B.
By heating
- C.
Sample of moist soil molded and rolled into thin threads without breaking or crumbling
- D.
By soaking into the water
- 62.Item 200 liquid limit of special fill common materials
- A.
Not exceeding 25
- B.
Not exceeding 35
- C.
Not exceeding 30
- D.
Not exceeding 20
- 63.Item 200 plasticity index of special fill common materials
- A.
Not exceeding 12
- B.
Not exceeding 6
- C.
Not exceeding 8
- D.
Not exceeding 4
- 64.You are the material engineer of a certain company doing an earth road construction. During the progress of construction highly organic soils was encountered. What will you recommend to your firm
- A.
Blend the highly organic soil with the granular materials
- B.
Removed an indirect placed with more stable materials
- C.
Covered highly organic soils with boulders
- D.
Placed several logs on the highly organic soils
- 65.Good compaction means, except
- A.
Subsequent settlement is minimized
- B.
Stability is increased
- C.
Resistance to water absorption is decreased
- D.
Change in moisture content is minimized
- 66.In applying load on the penetration piston in CBR determination, the rate of penetration is approximately
- A.
1.5 mm per minute
- B.
1.3 mm per minute
- C.
1.27 mm per minute
- D.
1.0 mm per minute
- 67.The required area for the construction of control strip and determination of target density
- A.
550 sq.m
- B.
335 sq.m
- C.
400 sq.m
- D.
500 sq.m
- 68.The group index number is a measure of the relative supporting power of the subgrade and thus high number will require,
- A.
Leaser depth of the base and surface
- B.
Greater depth of base and surface
- C.
Lesser permeability
- D.
Lesser capularity
- 69.Soil sieve will not give information
- A.
Size of grains
- B.
Size of distribution
- C.
Soil classification
- D.
Mass weight passing
- 70.All test for determination of consistency limits of soil are on the fraction of soil passing the ___ sieve.
- A.
#30
- B.
#40
- C.
#20
- D.
#8
- 71.Which one do you like?
- A.
Option 1
- B.
Option 2
- C.
Option 3
- D.
Option 4
- 72.The degree of compaction in the field can be verified by
- A.
Field density test
- B.
Job density test
- C.
Any of a and b
- D.
None of the above
- 73.Unsuitable materilas, material other that suitable material such as
- A.
Highly organic soil such as peat and muck
- B.
Soil with a natural water content exceeding 100%
- C.
Soil with a very low density, 800 kg/cu.m or lower
- D.
All of the above
- 74.All boring on soil survey along new route road to be constructed shall generally carried to depth of at least
- A.
1.5 m below the proposed grade line
- B.
1.0 m below the proposed grade line
- C.
2.0 m below the proposed grade line
- D.
2.5 m below the proposed grade line
- 75.Location of boring on the new proposed road shall be taken
- A.
Along the proposed centerline
- B.
Along the side of road
- C.
Both a and b
- D.
None of the above
- 76.Minimum depth of boring on bridge project below the river bed in ordinary soil
- A.
10 m
- B.
20 m
- C.
15 m
- D.
25 m
- 77.Minimum of depth boring below the lowest part of foundation on building project
- A.
5 m
- B.
9 m
- C.
6 m
- D.
7 m
- 78.Maximum depth of exploration below subgrade level on road construction for areas of light cut and fill where there are no special problem
- A.
2 m
- B.
2.5 m
- C.
1.5 m
- D.
1.6 m
- 79.Piles shall be used only in places where the minimum penetration of __ in firm material can be obtained
- A.
4 m
- B.
5 m
- C.
3 m
- D.
4.5 m
- 80.Soil sample obtained on boring for flood control and drainage project shall be tested for the following laboratory test except,
- A.
Atterberg limits
- B.
Natural water content
- C.
Sieve analysis
- D.
Moisture density relationship
- 81.Minimum number of boring for building exceeding three storeys
- A.
4
- B.
5
- C.
10
- D.
8
- 82.Minimum depth of borings for bridge project in bedrocks
- A.
2 m
- B.
3 m
- C.
1.5 m
- D.
2.5 m
- 83.Minimum number of borings for an active slide for flood control and drainage project
- A.
2
- B.
1
- C.
3
- D.
4
- 84.Liquid limit is either
- A.
Greater than plastic limit
- B.
Equal to the plastic limit
- C.
Lesser to the plastic limit
- D.
All of the above
- 85.Maximum size of special fill common material
- A.
2"
- B.
3"
- C.
1 1/2"
- D.
2 1/2"
- 86.Physical properties of soil that gives an indication of clay contents
- A.
Lquid limit
- B.
Plasticity index
- C.
Shrinkage limit
- D.
Plastic limit
- 87.Increment of loads applied in load test
- A.
Not to exceed 25% of proposed safe load
- B.
Not to exceed 20% of proposed safe load
- C.
Not to exceed 15% of proposed safe load
- D.
Not to exceed 10% of proposed safe load
- 88.Minimum weight of soil sample taken from boring in road construction for CBR test
- A.
100 kg
- B.
50 kg
- C.
15 kg
- D.
20 kg
- 89.Minimum CBR required for base course
- A.
100
- B.
95
- C.
80
- D.
85
- 90.Maximum plasticity index for base course
- A.
8
- B.
6
- C.
7
- D.
5
- 91.Maximum thickness of any one layer in spreading and compacting base and subbase course
- A.
150 mm
- B.
200 mm
- C.
100 mm
- D.
300 mm
- 92.300 mm thickness of base and subbase course will be spread and computed into
- A.
One-layer
- B.
Two-layers
- C.
Two- or more layers
- D.
Three layers
- 93.The binder material for granular materials usually consist of the following except
- A.
Clay
- B.
Silt clay
- C.
Limestone dust
- D.
Slags
- 94.In construction of control strips and determination of target density. The numbers of in-place density tests taken randomly selected sites within the control strip will be
- A.
20
- B.
18
- C.
15
- D.
25
- 95.The layer used in the pavement system between the subgrade and the base course
- A.
Embankment foundation
- B.
Embankment
- C.
Surfacing
- D.
Subbase
- 96.In CBR determination the corrected load at o.2 inch penetration result is 1,255 psi. The percent CBR will be
- A.
83.67%
- B.
81.50%
- C.
83.20%
- D.
82.50%
- 97.In-situ density test means
- A.
Compaction test
- B.
Job density test
- C.
Moisture density relation test
- D.
Compaction by vibration
- 98.You are the materials engineer of your firm. It so happen that in the preparation of the as-staked plans it was found out that there was an increase and new additional items of work from the original control program as submitted. What will you recommend?
- A.
Maintain the old submitted quality control program
- B.
Revised the quality control program
- C.
Delete the increase and the new additional item
- D.
Any of the above
- 99.In laboratory compaction test, dry density is 1940 kg/cu.m, the percent water content is 13.40%. The wet density will be
- A.
1966
- B.
2049
- C.
2200
- D.
2250
- 100.In laboratory compaction test, the wet density is 2049 kg/cu.m, the percent water content is 4.2%. The dry density will be
- A.
2048
- B.
1966
- C.
1942
- D.
1950
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