Refers to the mineral or material at kr near the earth's surface which consists of air, moisture and other substances which has resulted from natural processes such as weathering, decay and other chemical action.

Sampling Tube is approximate ___ min. diameter and ___ length

Shelby Tube of an undistributed sample is ____ in legth.

Rounded or water-worn pebbles. No plasticity and cohesion.

Hard and loose grains. Individual grains readily seen and felt. No plasticity and cohesion. If dry, a cast formed in the hands will fall apart. If moist, a cast will crumble when touched.

Fine and barely visible grains.

Can be made plastice by adjusting its water content.

Is the ratio of the mass of water held in the soil to the dry soil.

Ratio of the weight of water to the weight of the oven dried soil (oven at temperature of 110 ± 5°C

Amount of water present at the sample at air-dried condition.

Amount of water present from undistributed sample.

Grain size distribution is widely used in the classification and identification of soils. It is also related to permeability and capillarity of cohessionless soils. It is an important criteria in the classfication of highway subgrade material.

For particle sizes larger than 0.075 mm ( No. 200) in diameter.

For particle sizes smaller than 0.075 mm (No. 200) in diameter.

Determines the particle size distribution of fine-grained soils passing Sieve No. 200. It measures the specific gravity of the soil suspension.

The smallest size of sieve in which all materials are required to pass.

The smallest size of sieve in which all materials are permitted to pass.

Defined the boundaries of four states o soil in the terms of "limits".

Is the state of fine-grained soil at which the soil will flow on its own weight.

Is the condition at which the soil can be remolded to any shape without any development or cracks.

is the state at which the soild remold but only with the development of cracks.

The soil cannot be remolded at all, if done the soil specimen would get broken.

The water content at which the soild changes from the plastic state to a liquid state.

It is the minimum moisture content at which a soil flows upon application of very small shear.

Can be determined using the Casagrande cup method or a cone penetrometer.

The water content at which a soil changes from the semisolid state to a plastic state.

Is performed by repeated rolling of an ellipsoidal-sized soil mass by hand on a non-porous surface.

Casagrande defined the _________ as the water content at which a thread of soil just crumbles when it is carefully rolled out to a diameter of 3mm(1/8")

The water content at which the soil changes from a solid to a semi-solid state.

At this moisture content the volume of the soil mass ceases to change with further drying of the material.

Is defined as the lowest moisture content at which the soil will flow upon the application of a very small shearing force.

Is defined as the minimum moisture content at which the soil can be readilu molded without breaking or crumbling.

Is the range of water content within which the material is in a plastic state.

Is the laboratory test generally used to obtain the maximum dry unit weight and optimum moisture content.

Is relationship between soil water content and dry unit weight.

The highest dry density of which the layer can be compacted

The optimal amount of water that should be added to the materials in order to obtain the highest compaction.

is primarily undertaken to provide data for road pavement design. It was first developed by the California State Highway Department

Is widely used as a control test in embankment construction to ensure adequate compaction of in-placed embankment, subbase, base and gravel surface courses in a road construction.

This test evaluates the structural strength of coarse aggregate.

It is a combination of sand, gravel, crushed stone, slag or other material of mineral composition, used in combination with binding medium to form such as bituminous/portland cement concrete pavements, macadam, mortar, plaster, etc.

Are those aggregates that are usednin concreting works. (item 311, 405, 505, etc.)

Coarse aggregates retained on ___________

Fine Aggregate passing _________ and retained on ________.

To determine the amount of materilas finer than 0.075 mm (No. 200) by washing fine materilas such as clay particles or other water-soluble particles.

Is the characteristic generally used for calculation of the volume occupied by the aggregate in various mixtures.

______ values are used to calculate the change in the weight of an aggregate due to water absorbed in the pore spaces within the constituent particles.

Is the increase in weight due to water contained in the pores of the material.

The ratio of the weight in air of a unit volume of aggregate at a stated temperature to the weight in air of an equal volume of gas-free distilled water at the stated temperature.

The ratio of the weight in air of a unit volume of the impermeable portion of aggregate (does not include the permeable pores in aggregate) to the weight in air of an equal volume of gas-free distilled water at the stated temperature.

The condition in which the aggregate has been soaked in water and has absorbed water into its pore spaces.

The ratio of the weight in air of a unit volume of aggregate, including the weight of water within the voids filled to the extent achieved by submerging in water for approximately 15 hours, to the weight in air of an equal volume of gas-free distilled water at the stated temperature.

To determine the disintegration of aggregates due to weathering by using saturated sodium sulfate solutions.

Are those materilas used in asphalt pavements. Combination of sand, gravel, crushedstone, slug or other material of mineral composition. Used in combination with binding medium to form bituminous concrete.

0.5% -1% mass; passing #200 (0.075mm). Finely divided mineral matter such as rock dust, slaf dust, hydratednlime, hydraulic cement, fly ash or other suitable mineral matter.

Defined as being cause either by mechanical means or by nature and shoul have sharp or slightly blunted edges.

Refers to the parctises, protocols, and precautions designed to minimize risks and ensure the well-being of individuals working in laboratories.

What are the 5S

Sieve size 3"

Sieve size 2 1/2"

Sieve size No. 4

Sieve size No. 8

Sieve size No. 10

Sieve No. 16

Sieve No. 30

Sieve No. 40

Sieve 50

Sieve No. 100

Sieve No. 200

Sieve 60