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Materials engineers are responsible for the research, specification, design, and development of materials to advance technologies and products of many kinds. Their expertise lies in understanding the properties and behaviors of different substances, from raw materials to finished products. Take the quiz review to gauge your understanding so far. All the best!
- 1.A deprtment order series of 1997 give supplement guidelines on the conduct of project assestment by the quality assurance unit regional office.
- A.
Do. No. 80
- B.
DO No. 20
- C.
Do. No. 48
- D.
Do.No. 52
- 2.
- A.
Do No. 48
- B.
Do. No. 20
- C.
Do.No. 80
- D.
DO No. 52
- 3.A departmnet order memorandum circular, a revised method for FDT.
- A.
DM No. 52
- B.
DM. No. 20
- C.
DM No. 48
- D.
DM.No. 80
- 4.A Memorandum Circular Order states that all Materilas men in-charge in a said project shall keep a logbook on materials quality control.
- A.
MC 135
- B.
MC 80
- C.
MC 119
- D.
MC 200
- 5.A department order hereby directed that the only test report issued by the regional/district laboratories of department and other testing laboratories accredited by DPWH shall be allowed to be used in acceptance or rejection of construction materials
- A.
Do No. 80
- B.
DO No. 52
- C.
Do. No. 48
- D.
Do.No. 135
- 6.A Department order tells that no acceptance and final payment shall be made on completed concrete and Asphalt pavement unless core test for thickness determination and density is conducted.
- A.
Do No. 119
- B.
Do. No. 48
- C.
Do.No. 80
- D.
DO No. 52
- 7.Amendment to DO 184, series of 1999, re-Guidelines on the Accreditation of Contractoors & Consultant's Materials Engineer.
- A.
Do No. 52
- B.
DO No. 206
- C.
Do. No. 48
- D.
Do.No. 200
- 8.Adoption of DPWH Standard Specifications for Public Works and Highways 1995 edition Vol II in the Implementation of all Infrastructure Project
- A.
Do No. 14
- B.
Do. No. 25
- C.
Do.No. 200
- D.
DO No. 40
- 9.Standard Specification for Chemical Admixtures for Concrete?
- A.
DMC No. 03
- B.
DMC No. 25
- C.
DMC No. 200
- D.
DMC No. 40
- 10.Guidelines for re-coring of Concrete pavement and concrete structures for strength determination.
- A.
Do No. 200
- B.
Do. No. 125
- C.
Do.No. 127
- D.
DO No. 40
- 11.No contractor shall start any concreting without a pouring permit duly approved and issued by Proj. Engr
- A.
Do No. 211
- B.
DO No. 221
- C.
Do.No. 230
- D.
Do. No. 212
- 12.Reactivation of the quality assurance unit regional office
- A.
Do.No. 80
- B.
Do No. 155
- C.
DO No. 52
- D.
Do. No. 04
- 13.Correcting projects with noted defects/deficients prior to partial full payment
- A.
DO No. 40
- B.
Do. No. 125
- C.
Do.No. 200
- D.
Do No. 139
- 14.Use of High- Early Strength Concrete in the construction of national Roads and Major Exchanges.
- A.
DO No. 52
- B.
Do. No. 10
- C.
Do No. 115
- D.
Do.No. 80
- 15.Utilizing first the services of the Bereau of Research and Standards,Regional & District Laboratories in testing of samples of construction materials
- A.
Do.No. 18
- B.
Do. No. 48
- C.
DO No. 15
- D.
Do No. 29
- 16.Testing of Construction materials intended for regular maintenance projects.
- A.
Do.No. 80
- B.
Do. No. 43
- C.
Do No.83
- D.
DO No. 5
- 17.Proper edging on forms and joints of concrete pavement.
- A.
DO No. 02
- B.
Do No.05
- C.
Do. No. 48
- D.
Do.No. 08
- 18.A Department order for testing and acceptance of concrete.
- A.
Do No 57
- B.
DO No. 25
- C.
Do. No. 43
- D.
Do.No. 80
- 19.A department order which uses a fly ash in concrete.
- A.
Do No 34
- B.
DO No. 50
- C.
Do. No. 38
- D.
Do.No. 80
- 20.Use of Different brands or same brand of ce`ment in concrete constructon.
- A.
Do. No. 44
- B.
DO No. 02
- C.
Do No 55
- D.
Do.No. 80
- 21.Proper construction and sealing of joints of concrete in concrete contruction.
- A.
DMC No 55
- B.
DO No. 02
- C.
Do. No. 44
- D.
DMC.No. 83
- 22.A department order for sampling and testing of materials
- A.
DO No. 22
- B.
Do No 53
- C.
Do. No. 24
- D.
Do.No. 13
- 23.A memorandum circular for guidelines and submission of samples.
- A.
MC 20
- B.
MC 19
- C.
MC 35
- D.
MC 38
- 24.A memorandum circular for where the contractor Is required to provide quality control personnel and fully equipped laboratory building.
- A.
MC 38
- B.
MC 33
- C.
MC 19
- D.
MC 20
- 25.Where to determine the amount of mixing water to use when compacting the soil in the field to attain maximum density
- A.
Lab. Compaction Test
- B.
Field Density Test
- C.
Control Strip
- D.
Trial Section
- 26.
- A.
Straight line
- B.
Parabola
- C.
Semi-elliptical
- D.
Hyperbola
- 27.Bituminous stabilization in the process of mixing intimately pulverized soil and bituminous material. What is the minimum bearing capacity (soaked CBR ) of the mixture?
- A.
80%
- B.
100%
- C.
95%
- D.
98%
- 28.In conducting soil exploration survey, what equipment you will use in obtaining undisturbed samples
- A.
Thin-walled sampler
- B.
Split spoon sampler
- C.
Screw type soil auger sampler
- D.
Post-hole auger sampler
- 29.
- A.
40%
- B.
45%
- C.
Not more than 40%
- D.
50%
- 30.For a rich mixture of cement in concrete, what determines the flexural strength of the concrete
- A.
Mortar strength
- B.
The strength of aggregate
- C.
The water/cement ratio
- D.
Both a & b
- 31.This is a new method of soil stabilization being introduced to improved the properties of soil which is effective and at the same time cheaper
- A.
Stabilization by the use of Geotextiles
- B.
Cement stabilization
- C.
Bituminous stabilization
- D.
Lime stabilization
- 32.As per guidelines on submission of samples, laboratory trial mixes should be made on aggregates which are proposed tube used for the first time, in this case what is the weight of fine aggregates to be submitted for testing?
- A.
100 kgs.
- B.
70 kgs.
- C.
80 kgs.
- D.
50 kgs.
- 33.The phosphorous content of reinforcing steel bars bigger than 9.0 mm shall not exceed
- A.
0.18%
- B.
0.06%
- C.
0.05%
- D.
0.08%
- 34.A type of cement that sets and hardens by chemical interaction with water and is capable of doing so underwater
- A.
Portland Cement
- B.
Hydraulic Cement
- C.
Air-Retaining Portland Cement
- D.
All of the above
- 35.Oversanded and undersanded concrete mixtures require more water in order to be workable but will only result to ______________.
- A.
Good surface texture
- B.
Water tightens
- C.
Weak strength
- D.
All of the above
- 36.Penetration and ductility test of asphalt are done in __________ temperature.
- A.
60*C
- B.
25 °C
- C.
50*C
- D.
10*C
- 37.This is the most fluidest and lightest of all the grade of Medium Curing Cut-back Asphalt
- A.
MC – 30
- B.
MC – 800
- C.
MC – 300
- D.
MC – 70
- 38.The only kind of asphalt that can be used in all bituminous item of work.
- A.
Asphalt Cement
- B.
Cut-back Asphalt
- C.
Emulsified Asphalt
- D.
All of the above
- 39.Retempering of concrete or mortar, which has partially hardened, will be permitted with the addition of cement, aggregate or water
- A.
Yes
- B.
No
- C.
It depends on the condition of concrete
- D.
Check the slump
- 40.What is the minimum number of representative cores that shall be taken from each member area of concrete in place that is considered deficient?
- A.
3 cores
- B.
4 cores
- C.
5 cores
- D.
Core must be taken at 5 meter interval backward & forward of the designed sta.
- 41.
- A.
25%
- B.
20%
- C.
15%
- D.
10%
- 42.For major interchanges and busy intersection, PCCP will be allowed to open on the ________ to minimize occurrence of road congestion.
- A.
14th day
- B.
12th day
- C.
10th day
- D.
7th day
- 43.This is the empirical indicator of the clay fraction of a binder material in a stabilized soil mixture.
- A.
Group Index
- B.
Liquid Limit
- C.
Plasticity Index
- D.
Plastic Limit
- 44.When water is added to the mixture to bring the slump within required limit, it shall be injected into the mixer under such pressure and direction of flow that the requirement for uniformity and desired slump of concrete are met. The drum shall be turned on additional _______ revolution or more.
- A.
10 revolutions
- B.
30 revolutions
- C.
45 revolutions
- D.
15 revolutions
- 45.Job-mix formula submitted for approval shall propose definite single values for, except _____.
- A.
% of aggregate passing each specified sieve
- B.
Temperature of the mixture delivered on the road
- C.
Percent of bituminous materials to be added
- D.
Mixing time of the mixture in the batching plant
- 46.
- A.
Deformation characteristic of soil
- B.
Engineering properties of the underlying soils
- C.
Arrangement of soil strata
- D.
Field Density of soil
- 47.
- A.
15 days
- B.
10 days
- C.
21 days
- D.
7 days
- 48.
- What test determined the crushing of strength of aggregates to ensure that course aggregates will not degrade to smaller ones.
- A.
Abrasion
- B.
Grading Test
- C.
Density
- D.
Plasticity test
- 49.The quality of paving concrete is usually measured by its _____________.
- A.
Compressive
- B.
Flexural
- C.
tensile
- D.
Bond strength
- 50.Generally speaking, batching of concrete aggregates by volume is preferable than weight.
- A.
True
- B.
False
- C.
They are the same
- 51.When concrete must be placed in a sloping surface, placing should start at the __________.
- A.
bottom
- B.
Top
- C.
Middle
- D.
Can be top or bottom
- 52.
- A.
test to determine pay volume
- B.
Test to determine strength characteristic
- C.
Test to determine volume change
- D.
Test to determine maximum density
- 53.All asphalt are _______, they became harder as temperature decreases and softer as their temperature increases
- A.
thermoplastic
- B.
Brittle
- C.
hyrophobic
- D.
None of the above
- 54.The viscosity of the asphalt during mixing and lay down is ____________.
- A.
Viscosity at 135*C
- B.
Viscosity at 125*C
- C.
Viscosity at 60 °C
- D.
Viscosity at 163*C
- 55.The trial section for compaction for each type of fill materials and type of equipment to be used in the work should have an area of__________.
- A.
500 sq. m.
- B.
335 sq. m.
- C.
600 sq. m.
- D.
400 sq. m.
- 56.Control slip shall have an area of approximately ____________.
- A.
500 sq. m.
- B.
335 sq. m.
- C.
600 sq. m.
- D.
400 sq. m.
- 57.The higher the ________, the lower the penetration.
- A.
Specific gravity
- B.
Durability
- C.
Viscosity
- D.
Solubility
- 58.As Materials Engineer, what would you recommend in order to check the suitability and efficiency of the equipment to used prior to subbase construction for item 310, Bituminous Concrete Surface Course?
- A.
Make a trial section
- B.
Make trial mix
- C.
Establish control strips
- D.
None of the above
- 59.Quality of factor – produced reinforced concrete pipes may be best established through what?
- A.
Compressive strength test
- B.
Flexural strength test
- C.
Core test
- D.
Crushing strength test
- 60.Problems regarding quality of construction materials shall be reported directly by the Contractor’s Materials Engineer to the ____________.
- A.
Contractor
- B.
DPWH Materials Engineer
- C.
Contractor’s Project Engineer
- D.
None of the above
- 61.What primarily influence the grade of asphalt to be selected?
- A.
Penetration
- B.
Climate
- C.
Class of aggregate
- D.
Temperature
- 62.What control during the mixing and compaction of the bituminous pavement is of great significance in the resulting pavement
- A.
Compaction
- B.
Density
- C.
Temperature
- D.
Grading of aggregates
- 63.
- A.
Penetrometer
- B.
Viscometer
- C.
thermometer
- D.
Tag open cup
- 64.How is the consistency of liquid asphalt determined?
- A.
Viscometer
- B.
Tag open cup
- C.
penetrometer
- D.
Thermometer
- 65.In a bituminous mix, there are 3 kinds of aggregate. What kind of passes the no. 200 sieve
- A.
Coarse
- B.
Fine
- C.
Mineral Filler
- D.
Admixture
- 66.For soil classification purposes as in AASHTO M45, what is not required
- A.
Combined sieve and mechanical analysis
- B.
Sieve analysis
- C.
The wash test
- D.
None of the above
- 67.An apparatus used to determine the specific gravity of asphalt is called
- A.
Metal Pycnometer
- B.
Glass Pycnometer
- C.
Any bottle
- D.
Vicat Apparatus
- 68.A process of volatilization test which measures the relative proportion of asphalt to oil
- A.
Distillation
- B.
Extraction
- C.
Float Test
- D.
Slump test
- 69.
- A.
Boiling Point
- B.
Fire Point
- C.
Softening Point
- D.
Burning Point
- 70.The component of bituminous mixes which range from 92 to 96% is called __________.
- A.
Sand
- B.
Concrete Aggregate
- C.
Bituminous Blended Aggregate
- 71.____________ is a property of bituminous mixes in pavement to resist deformation or displacement due to impose load or repeated loading
- A.
Stability
- B.
Flexibility
- C.
Tensile
- D.
Durability
- 72.____________ is a property of bituminous mixes in pavement to resist disintegration or deterioration due to the action of water, traffic and changing climate
- A.
Flexibility
- B.
Durability
- C.
Ductility
- D.
Rigidity
- 73.____________ is a property of bituminous mixes in pavement adjust itself to settlement
- A.
Flexibility
- B.
Rigidity
- C.
Hardness
- D.
Ductility
- 74.
- A.
Alligator crack
- B.
raveling
- C.
Rutting
- D.
Bleeding
- 75.If the fine aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed ___________
- A.
5 mass percent
- B.
3 mass percent
- C.
10 mass percent
- D.
12 mass percent
- 76.The mass percent of wear of coarse aggregates for item 311 when tested by AASHTO 96 is not greater than ____________.
- A.
40%
- B.
45%
- C.
50%
- D.
55%
- 77.The design of concrete mix specified by the blue book is based on ________________.
- A.
Absolute Volume Method
- B.
Area Method
- C.
American Method
- 78.The final setting time of Portland cement Type I is _____________.
- A.
10 hrs.
- B.
24 hrs
- C.
36 hrs.
- D.
72 hrs.
- 79.The initial setting time of Portland cement is not less than _________________.
- A.
30 min.
- B.
60 min.
- C.
90 min.
- D.
45 min.
- 80.The apparatus used to determine the initial and final setting of cement in the laboratory is _________.
- A.
Gillmore needles
- B.
Bailey needle
- C.
Vicat apparatus
- D.
Blaine Air Permeability Apparatus
- 81.Mass percent loose for fine aggregates when tested in Clay lumps is _____.
- A.
0.10
- B.
0.25
- C.
1.0
- D.
0.80
- 82._________ is a type of cement which shall be transferred to an elevated, air tight and weather proof bins storage
- A.
Portland Cement
- B.
Bulk Cement
- C.
Pozzolan Cement
- D.
None of the above
- 83.This is the characteristic generally used for calculation of the volume occupied by the aggregate in various mixture containing aggregates including Portland Cement concrete, bituminous concrete, and other mixtures that are proportioned or analyzed on an absolute volume basis:
- A.
Bulk Specific Gravity
- B.
Dry Specific Gravity
- C.
Apparent Specific Gravity
- D.
Wet Specific Gravity
- 84.It pertains to the relative density of the soil material making up the constituents particle not including the pore space within the particles that is accessible to water.
- A.
Bulk Specific Gravity
- B.
Dry Specific Gravity
- C.
Apparent Specific Gravity
- D.
Wet Specific Gravity
- 85.The pour point of concrete joint sealer shall be at least________________ lower than the safe heating temperature, which is the maximum temperature to which the material may be heated without exceeding the permitted flow.
- A.
11 ºC
- B.
2 ºC
- C.
15 ºC
- D.
10 ºC
- 86.The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed______
- A.
100
- B.
45
- C.
80
- D.
90
- 87.The bearing blocks of the compression machine should be at least _____ greater than the diameter of the specimen.
- A.
5%
- B.
6%
- C.
3%
- D.
2%
- 88.The bottom bearing block shall be at least _____ thick when new
- A.
2”
- B.
4”
- C.
1”
- D.
3”
- 89.The bottom bearing block shall be at least _______ thick after any resurfacing operations.
- A.
0.9”
- B.
1.2”
- C.
1.0”
- D.
0.8”
- 90.The minimum testing requirement for every project is indicated in a duly approved________.
- A.
Quality Control Program
- B.
Program of Work
- C.
Work Schedule
- D.
Minimum Testing Requirement
- 91.The maximum percent abrasion loss allowed for concrete coarse aggregate is __________.
- A.
30%
- B.
40%
- C.
45%
- D.
50%
- 92.Rate of application for curing compound is _______________.
- A.
0.29 li/sq. m.
- B.
0.20 li/sq. m.
- C.
0.15 li/sq. m.
- D.
0.10 li/sq. m.
- 93.The required thickness of the thermoplastic paint in PCCP is ____0.33L/sq.m______.
- A.
3.2 to 4.8 mm.
- B.
3.0 to 4.5 mm.
- C.
3.3 to 3.8 mm.
- D.
3.2 to 4.0 mm
- 94.
- A.
25 to 30 mins
- B.
10 to 15 mins
- C.
20 to 25 mins
- D.
15 to 30 mins
- 95.
- A.
150 mm
- B.
300 mm
- C.
200 mm
- D.
100 mm
- 96.
- A.
40 – 50 % pigment; 50 – 60% vehicle
- B.
42 – 45 % pigment; 53 – 55% vehicle
- C.
45 – 55 % pigment; 55 – 60% vehicle
- D.
40 – 45 % pigment; 50 – 55% vehicle
- 97.The composition of yellow paint shall be _______ pigment and ______ vehicle.
- A.
40% pigment and 77% vehicle
- B.
29% pigment and 77% vehicle
- C.
23% pigment and 77% vehicle
- D.
26% pigment and 77% vehicle
- 98.
- A.
Non-volatile
- B.
coarse
- C.
Deleterious
- D.
Solvent
- 99.___________ is a reflector which shall be the short base type having a maximum base area of 180 mm x 140 mm.
- A.
Flash surface reflective stud
- B.
Traffic Cone
- C.
Brinnell
- D.
Vicat
- 100.Expansion joint filler having a nominal thickness of less than ________ mm. shall not be subject to a requirement for water absorption.
- A.
10 mm
- B.
15 mm
- C.
18 mm
- D.
9.5 mm
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