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WorksheetsUnit 2: PAVEMENT MATERIALS
Total questions: 10
Worksheet time: 5mins
"Its fills the voids between aggregate and help stiffening the binder to produce a stronger and stiffer mix that could last long."
This statement refers to
Aggregate
Steel Reinforcement
Cement
Fillers
“Aggregate” is a collective term for sand, gravel and crushed stone mineral materials in their natural or processed state
True
False
The raw material which is used as road aggregate can be further classified as EXCEPT
Igneus
Burnt Shale
Sedimentary
Crusher run
"Pass sieve 75 micron, consist fine material such as cement, lime, crushed aggregate dust". The statement refers to ...
Coarse Aggregate
Mineral Filler
Fine Aggregate
Sand
Which statement is TRUE about open graded
Refers to a gradation that is near maximum density.
Refers to a gradation that contains only a small percentage of aggregate particles in the mid-size range. These mixes can be prone to segregation during placement.
Refers to a gradation that contains only a small percentage of aggregate particles in a small range. This results in more air voids because there are not enough small particles to fill in the voids between the large particles.
Refers to gradation that contains most of the particles in a very narrow size range. In essence, all the particles are the same size.
The following is list FOUR (4) important properties of aggregates EXCEPT
Strength
Soundness
Relative density and absorption
Uniformly graded
Which the aggregate shape below are Flaky & Elongated
"Size used is aggregate passing 14 mm retained 10 mm. Aggregate is placed in the mould and compacted in a mould with 25 times of rodding. Then, it is subjected to 15 times of impact loading. After impact, calculate the weight crushed using 2.36 mm sieve size and determine the AIV " The above statement refers to ...
Ten Percent Fine Value Test
Aggregate Impact Value Test
Aggregate Crushing Value Test
Los Angeles Abrasion (LAAV)
The objectives of tests on Soundness are
To determine resistance to disintegration due to cycle of wetting and drying, heating and cooling (weathering)
To determine the percent of degradation under combination of abrasion or attrition, impact and grinding
To determine percentage of flaky aggregate.
To indicate the strength and porosity of aggregate
The following list is FOUR (4) difference between tar and bitumen EXCEPT
Tar not the distillation of petroleum.
Bitumen are easily change shape on temperature changes
Tar easily damaged at high temperatures and brittle at low temperatures.
Tar are insoluble in solvents such as gasoline, kerosene and others
