APP REVIEWER 1 Flashcards by Alecz Katherine Lazo

Sample for compressive strength determination of structural concrete

Concrete Cylinder Sample

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Test to determine consistency of concrete

Slump Test

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Length required for RSB sample for quality test

1.0m per 10,000kg / size / shipment

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

1 set of 3 pcs samples

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Required test size of test specimens of GI sheets

3 pcs - 60 mm in 1 sheet / 100 sheets

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Kind of paint that has a reflectance or beads

Reflectorized Paint

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

24 hours

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What is the rate of application of bituminous tack coat?

0.2 to 0.7 L/sq.m

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What is the penetration grade of blown asphalt?

0 to 30 penetration grade

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What kind of concrete sample is taken for flexural test?

Concrete Beam Sample

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

CBR, Abrasion, GPCD

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

3 Grading Tests

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

Blend Item 200 with coarser materials

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Standard specifications for LL and PI of Item 201

Maximum of 25%
Maximum of 6%

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CBR requirement for Item 201

80% Maximum

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

Asphalt

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

Brown Asphalt

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Item 311 of the DPWH Specifications (Blue Book)

Portland Cement Concrete Pavement

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Machine used for Abrasion Test

Los Angeles Abrasion Machine

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

Field Density Test

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Formula of obtaining PI

PI = LL - PL

Other terms for sieve analysis

Grading Test
Particle Size Distribution Test
Mechanical Analysis

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

101.23%

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

5 holes / km / lane

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

The soil is clayey

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

2000 bags

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

2 pcs - 1 m

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

105 - 115 degrees Celsius

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

Because i can affect its weight

What is the use of blown asphalt?

Joint filler and Water Proofing

Difference between hygroscopic moisture content from natural moistue content?

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

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

If the sample reaches its constant weight

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?

Superplasticizer

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

17.58%

Commonly nown as hot asphalt or penetration grade asphalt

Asphalt Cement

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

4 days @ 50 degrees Celsius

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

Magnesium Oxide Insoluble Residue Loss on Ignition

Paint is composed of:

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

Size of tamping rod used in tamping concrete samples

16 mm and 610 mm long with hemispherical tip

Temperature to be maintained when curing samples after its initial curing

21.3 to 24.7 degrees Celsius

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

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

High plasticity index means ___ of a soil

High degree of compressibility

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

No. 40 (0.425 mm)

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

4.54 kg with 457 mm drop

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?

60 blows per layer

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?

5.1%

Material used for Bituminous Prime Coat

Cut-Back Asphalt

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

0.004 to 0.007 cu.m / sq.m

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?

4.7% - 5.5%