5. CCME REVIEW SAMPLE QUESTIONS (401-500)

For Contractor Consultant Materials Engineer

100 rpm

In truck mixing, the minimum number of revolutions after all ingredients including water is in the drum is

2 hours

A maximum time of _____ shall be permitted for wet mixing, lay down and finishing when this method is used (Item 206)

40 kph

Traffic shall be prohibited from traveling at the speeds in excess of _____ until the asphaltic material has set.

90 minutes

Mortar shall be used within _____ after its preparation

concrete should be dumped into the face of the previously placed concrete.

In placing concrete for slab, using buggies, the correct method that should be followed is

conduct recording

There is a failure of flexural strength in the pavement, if you are the ME of your firm, what will you recommend?

excessive asphalt

When loads have been arriving at the spreader with the material peaked or doomed up and a load suddenly appears in which the material lies flat, it indicates

Bellafontaine, Ohio (1893)

Where and when was the first use of Portland cement?

flow curve

The curve in the logarithmic scale where the 25th blow is projected in order to determine the liquid limit of the soil.

abrasion loss

Percentage of wear represents the value of _____

24.7 liters

In the design of concrete mix, what is the volume of water in the concrete mix that produces a slump of 76.2 mm?

2.75

The standard fineness modulus of sand is about _____

40 kg per bag

The standard packaging weight of cement

curing compound

It is an impervious membrane applied to concrete pavement before its initial setting that prevents rapid evaporation of water from the mix.

reflectorized paint

The type of paint that is used for zone marking, traffic lanes and parking spaces which is rapid drying, resistant to abrasion and weather conditions and possess improved visibility at night.

glass beads

An ingredient in the paint that gives reflection during night time.

latex

The paint which is used on concrete or masonry units.

Triple spot test

The average loss in weight of three specimens in zinc coating test.

Single spot test

One the three specimens in the triple spot test with lightest coating.

enamel

The type of paint that is used in wood surfaces. It is a special type of paint made with varnish as the vehicle.

good subgrade material

Group index is an empirical number ranging from 0 to 20 under average conditions of good drainage and adequate compaction. The supporting value of a material as subgrade may be assumed as an inverse ratio to its group index, that is a group index of zero indicates

control strips

It determines the target density which is constructed at the beginning of the work on each course of material to be compacted.

tremie with 250 mm Ø

The instrument used in placing concrete in water in a compact mass in its final position.

2.15

The maximum specific gravity of thermoplastic paint.

102.50ºC

The softening point of a thermoplastic paint.

10 minutes

The maximum drying time of thermoplastic paint.

0.33 lit per m2

The rate of application of traffic paint.

15 – 30 minutes

The maximum drying time of traffic paint.

10 kg

The minimum weight of sample for reflectorized paint.

vernier caliper

The apparatus used to measure the thickness or height of compacted bituminous paving mixture.

Bulk specific gravity of compacted bituminous mixtures using saturated surface dry specimens.

It is used in calculating the unit weight of the mixture of the degree of compaction of the asphalt pavement.

gasoline

The solvent in the extraction of bitumen.

mass of dry aggregates

The percent of bitumen is computed based on

Mechanical analysis of extracted aggregates

The method used to determine the grading of aggregate extracted from bituminous mixture.

penetrometer

The method used to determine the grading of aggregate extracted from bituminous mixture.

distillation

Volatization test which measures the relative proportion of asphalt to oil.

softening point

The measurement wherein the asphalt begins to melt.

(Wet Stability divided by Dry Stability) x 100%

The Index of Retained Strength (IRS) is computed through the formula

200˚F to 225˚F

The temperature requirement in initial rolling for Item 310.

yellowish brown

What is the color of asphalt when it is overcooked?

seven

How many gradation ranges for Hot Plant Mix bituminous pavement are there in the blue book?

two

How many gradation ranges for Cold Plant Mix bituminous pavement are there in the blue book?

approximately quarter points

The cored sample of asphalt pavement is measured at

bleeding

Too much asphalt in the bituminous mixes causes

not greater than 4

What is the plasticity index of mineral filler?

raveling

The wearing away of pavement surface caused by dislodging of aggregate particle.

alligator cracking

The interconnected cracks forming a series of small blocks resembling an alligator’s skin or chicken wire.

minimum testing requirements

It is prescribed in each project based on estimated quantities and specifies the kind and number of test of each item of work.

10 mass %

If the coarse aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed

12 mass %

If the fine aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed

admixtures

Additives used in concrete mixing.

soundness test

The test that determines the resistance of aggregates to disintegration by saturated solutions of sodium sulfate or magnesium sulfate.

absolute design method

The design of concrete mix specified in the bluebook is based on

45 mins

The initial setting time of Portland cement is not less than

10 hours

The final setting time of Portland cement

ottawa sand

The standard sand used in testing the mortar strength of Portland cement

blaine air permeability Apparatus

The apparatus used to determine the fineness of Portland cement by air permeability

cement paste

A mixture of cement and water is

gillmore needle

The apparatus used to determine the initial and final setting of Portland cement in the laboratory.

19.3 MPa

The compressive strength of cement mortar samples in 7 days is

crumbled

What is the appearance of the molded cement paste which fails to meet the autoclave?

first 7 days

The critical number of days of curing of concrete

sampling

It is equally as important as testing, and the sampler shall sue every precaution to obtain samples that will show the nature and condition of the materials which they represent.

disturbed samples

A soil sample received from the field for subsequent tests by reducing aggregations of particles into sizes which will pass certain sieves.

thin – walled tube sampling

A procedure to recover relatively undisturbed soil samples suitable laboratory tests of structural properties.

government

The representative who will witness the testing of materials in an accredited laboratory.

undisturbed samples

Samples obtained from the field with minimum disturbance by using any drilling equipment that provides clean hole before insertion of thin – walled tubes that is, both the natural density and moisture content are preserved as much as practicable.

retarder

The type of additive that is used to delay the setting of fresh concrete.

accelerator

The type of additive that is used to attain maximum early compressive strength of concrete.

water

The best enemy of construction.

a. Materials containing detrimental quantities of organic materials such as grass, roots and

sewage

b. Highly organic soils such as peat and muck

c. Soils with LL exceeding 80% and/or PL exceeding 55%

d. Soils with a natural moisture content exceeding 100%

e. Soils with very low natural density, 800kg/m3

f. Soils that cannot be properly compacted as determined by the engineer

The following are considered unsuitable materials:

0 – 12%

What is the spec of mass % passing in sieve No. 200, grading A for aggregate base course?

4 liter per 14 sq. m

The rate of application of special curing agent

sounding

The method of measurement for determining the depth of the river channel.

Liquid limit test

If the type of soil in Item 200 is non – plastic, what Atterberg limit test can be performed?

20mm

The minimum penetration of the preservatives into the surface of timber is

10 days

The engineer shall be notified at least _____ before the treating process of timber.

2mm

All grout shall pass through a screen with a _____ maximum clear opening.

2.5m – 3.5 (concrete); 4.5m (timber)

The allowable height of fall in driving piles to avoid injury using gravity hammer.

compaction

This increases the shearing strength of aggregates of any size, shape and gradation.

liquid limit of fines

In general, soils high value of this and plasticity index are poor as engineering materials.

3” to 5”

The recommended thickness of Hot Mix asphalt overlay depending on the expected traffic and the modulus of the cracked and seated pavement section.

greater than 0.14”, greater than 0.002”

Stabilization and under sealing are recommended if the mean deflection is ____ or the differential deflection is ____.

25% to 35%, 50% to 70%

Super plasticizers can reduce the water content by _____ and increase the 24 – hour strength by _____.

power sweeping and air blowing, 100 psi

Loose material is removed from all joints, cracks and areas that have previously patched by asphalt by _____ with nominal _____ air pressure.

air entraining admixtures

Admixtures which can help incorporate a controlled amount of air on the form moist in concrete during mixing without significantly altering the setting or the rate of characteristic of concrete.

delivery control

It is the activity of monitoring planned scheduled against actual and by speed task to make – up for the past or future loss of time.

potholes

Bowl – shaped holes of various sizes in the pavement surface.

corrugation

A form of plastic movement typified by ripples (surface waves) across the pavement.

shoving

A form of plastic movement resulting in localized bulging of the pavement.

rutting

Longitudinal surface depression in the wheel paths.

base or subbase course

It is the chief load – bearing of gravel road?

3 meters

The maximum distance of the discharge point from the point of deposit by pneumatic means.

base course

It reduces the vertical compressive stress induced by traffic in the subbase and subgrade.

40 times bar Ø

Minimum separation of splices when staggered.

structural concrete

Consist of furnishing, placing and finishing concrete in all structures except pavements conforming to the lines, grade and dimension.

0.6984 MPa (100 psi)

Minimum grouting pressure of bonding tendons.

transom

The main cross member of Bailey bridge that carry the roadway structure.

one (1) meter, 30m

Coring sampling shall be done at _____ interval by using split spoon sampler and the depth needed is _____.

50mm

What is the diameter of split spoon sampler?