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MATERIALS ENGINEERING > APP REVIEWER 1 > Flashcards

APP REVIEWER 1 Flashcards

1
Q

Sample for compressive strength determination of structural concrete

A

Concrete Cylinder Sample

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2
Q

Test to determine consistency of concrete

A

Slump Test

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3
Q

Length required for RSB sample for quality test

A

1.0m per 10,000kg / size / shipment

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4
Q

How many samples should be taken for every 75 cu.m of fresh concrete?

A

1 set of 3 pcs samples

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5
Q

Required test size of test specimens of GI sheets

A

3 pcs - 60 mm in 1 sheet / 100 sheets

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6
Q

Kind of paint that has a reflectance or beads

A

Reflectorized Paint

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7
Q

How many hours shall a bituminous prime coat be left undisturbed?

A

24 hours

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8
Q

What is the rate of application of bituminous tack coat?

A

0.2 to 0.7 L/sq.m

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9
Q

What is the penetration grade of blown asphalt?

A

0 to 30 penetration grade

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10
Q

What kind of concrete sample is taken for flexural test?

A

Concrete Beam Sample

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11
Q

What are the tests needed for the 2.65 cu.m Item 201 (Aggregate Base Course)?

A

CBR, Abrasion, GPCD

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12
Q

How many grading tests are required for a 3,200 cu.m selected borrow topping (Item 104)?

A

3 Grading Tests

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13
Q

What will you recommend if you find out that the materials to be used as Item 200 is finer than the required materials?

A

Blend Item 200 with coarser materials

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14
Q

Standard specifications for LL and PI of Item 201

A

Maximum of 25%
Maximum of 6%

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15
Q

CBR requirement for Item 201

A

80% Maximum

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16
Q

Construction material that has a property of being a dark brown to black cementitious material in which the predominating substance is bitumen?

A

Asphalt

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17
Q

What asphalt is used for sealing weakened plane joints of concrete pavement?

A

Brown Asphalt

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18
Q

Item 311 of the DPWH Specifications (Blue Book)

A

Portland Cement Concrete Pavement

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19
Q

Machine used for Abrasion Test

A

Los Angeles Abrasion Machine

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20
Q

How to determine the degree of compaction of items 104, 200, & 201?

A

Field Density Test

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21
Q

Formula of obtaining PI

A

PI = LL - PL

22
Q

Other terms for sieve analysis

A

Grading Test
Particle Size Distribution Test
Mechanical Analysis

23
Q

Degree of compaction of the soil if the wet density is 2,200 kg/cu.m with an actual moisture content of 10.2% and a maximum dry density of 1,960 kg/cu.m

A

101.23%

24
Q

How many concrete cores shall be taken for 1 kilometer concrete pavement?

A

5 holes / km / lane

25
Q

If the group index of a soil is high, what does it indicate?

A

The soil is clayey

26
Q

For how many bags of cement does a 10 kg sample represent?

A

2000 bags

27
Q

For 15,000 kg RSB, how many samples shall be submitted for Quality Test?

A

2 pcs - 1 m

28
Q

In oven drying a sample for test, what temerature shall be maintained?

A

105 - 115 degrees Celsius

29
Q

Why is it that cooling an oven dried sample before weighing is advisable?

A

Because i can affect its weight

30
Q

What is the use of blown asphalt?

A

Joint filler and Water Proofing

31
Q

Difference between hygroscopic moisture content from natural moistue content?

A

Hygroscopic moisture content is the moisture content of an air-dried sample, while natural moisture content is the moisture conctent of the oven-dried sample

32
Q

How can you determine that the sample placed in the oven is already oven dried?

A

If the sample reaches its constant weight

33
Q

An admixture is being introduced to the fresh concrete mixture for heavily reinforced concrete structure using a pumpcrete to pump out the fresh concrete mix, what admixture should it be?

A

Superplasticizer

34
Q

Moisture content of the soil having an original weight of 162.5 grams and an oven-dried weight of 138.2 grams

A

17.58%

35
Q

Commonly nown as hot asphalt or penetration grade asphalt

A

Asphalt Cement

36
Q

How many days shall the sample for Immersion Compression Test be soaked in water?

A

4 days @ 50 degrees Celsius

37
Q

If ductility test is for asphalt, what test is for cement?

A

Magnesium Oxide
Insoluble Residue
Loss on Ignition

38
Q

Paint is composed of:

A

35% vehicle, 50% pigment, and 15% beads

39
Q

Size of tamping rod used in tamping concrete samples

A

16 mm and 610 mm long with hemispherical tip

40
Q

Temperature to be maintained when curing samples after its initial curing

A

21.3 to 24.7 degrees Celsius

41
Q

Concrete cyinders are cured and ready for test. Temperature between 63 deg Farenheit to 85 deg Farenheit are permitted for a period not to exceed ___ hours immediately prior to test if free moisutre is maintained on the surface of the specimen at all times

A

3

42
Q

The molds of specimen not to be transported shall be removed after initial curing of ___ hours and should be cured to the standard curing temperature of 70.4 - 76.4 deg Farenheit

A

24

43
Q

High plasticity index means ___ of a soil

A

High degree of compressibility

44
Q

Sample to be issued for liquid limit and plastic limit tests should pass to what sieve?

A

No. 40 (0.425 mm)

45
Q

What compaction rammer shall be used if the specs given for Moisture Density Relation Test (MDR) is T 180?

A

4.54 kg with 457 mm drop

46
Q

A beam mold measuring 6 x 6 x 20 is to be used for sampling concrete. How many blows or tamps per layer shall be applied?

A

60 blows per layer

47
Q

If asphalt mix having a weight of 3,020 g and an aggregate weighing 2,865.98 g, what is the % asphalt by weight of mix?

A

5.1%

48
Q

Material used for Bituminous Prime Coat

A

Cut-Back Asphalt

49
Q

In Item 303, application of cover aggregates shall be evenly spread over the surface at the rate of approximately ___

A

0.004 to 0.007 cu.m / sq.m

50
Q

Asphalt mix having a weight of 3,020g and an aggregate weighing 2,865.98g. Applying the tolerance of 0.4% for asphalt content, what is the acceptable range of asphalt content?

A

4.7% - 5.5%

MATERIALS ENGINEERING (10 decks)

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