Soil

70問 • 1年前

問題一覧

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.

Soil

Sampling Tube is approximate ___ min. diameter and ___ length

1.5" and 6ft

Shelby Tube of an undistributed sample is ____ in legth.

18"

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

Gravel

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.

Sand

Fine and barely visible grains.

Silt

Can be made plastice by adjusting its water content.

Clay

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

Moisture Content

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

Moisture Content

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

Hygroscopic Moisture Content

Amount of water present from undistributed sample.

Natural Moisture Content

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.

Particle Size Analysis

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

Sieve Analysis

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

Hydrometer Analysis

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

Hydrometer Analysis

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

Maximum Size

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

Nominal Maximum Size

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

Atterberg Limits

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

Liquid State

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

Plastic State

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

Semi-solid

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

Solid-state

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

Liquit limit

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

Liquid Limit

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

Liquid Limit

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

Plastic Limit

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

Plastic Limit

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")

Plastic Limit

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

Shrinkage Limit

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

Shrinkage Limit

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

Liquid Limit

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

Plastic Limit

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

Plasticity Index

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

Proctor Compaction Test

Is relationship between soil water content and dry unit weight.

Compaction Curve

The highest dry density of which the layer can be compacted

Maximum Dry Density

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

Optimum Moisture Content

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

California Bearing Ratio

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.

Field Density Test

This test evaluates the structural strength of coarse aggregate.

Abrasion Test

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.

Aggregate

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

Concrete Aggregates

Coarse aggregates retained on ___________

4.75 mm (Sieve No. 4)

Fine Aggregate passing _________ and retained on ________.

4.75 mm (No. 4), 0.075 mm (No. 200)

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.

Wash Test

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

Bulk Specific Gravity

______ 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.

Absorption

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

Absorption

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.

Bulk Specific Gravity

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.

Apparent Specific Gravity

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

Saturated Surface Dry

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.

Bulk SSD Specific Gravity

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

Soundness

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.

Asphalt Aggregates

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.

Mineral Filler

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

Fractured Face

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

Laboratory Safety

What are the 5S

sort, set in order, shine, standardized, sustain

Sieve size 3"

75mm

Sieve size 2 1/2"

63mm

Sieve size No. 4

4.75mm

Sieve size No. 8

2.36mm

Sieve size No. 10

2.0

Sieve No. 16

1.18

Sieve No. 30

.60

Sieve No. 40

0.425

Sieve 50

0.300

Sieve No. 100

0.150

Sieve No. 200

0.075

Sieve 60

0.249

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MT 7

MT 7

MT 7

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問題一覧

Soil

Sampling Tube is approximate ___ min. diameter and ___ length

1.5" and 6ft

Shelby Tube of an undistributed sample is ____ in legth.

18"

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

Gravel

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.

Sand

Fine and barely visible grains.

Silt

Can be made plastice by adjusting its water content.

Clay

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

Moisture Content

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

Moisture Content

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

Hygroscopic Moisture Content

Amount of water present from undistributed sample.

Natural Moisture Content

Particle Size Analysis

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

Sieve Analysis

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

Hydrometer Analysis

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

Hydrometer Analysis

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

Maximum Size

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

Nominal Maximum Size

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

Atterberg Limits

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

Liquid State

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

Plastic State

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

Semi-solid

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

Solid-state

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

Liquit limit

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

Liquid Limit

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

Liquid Limit

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

Plastic Limit

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

Plastic Limit

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")

Plastic Limit

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

Shrinkage Limit

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

Shrinkage Limit

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

Liquid Limit

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

Plastic Limit

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

Plasticity Index

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

Proctor Compaction Test

Is relationship between soil water content and dry unit weight.

Compaction Curve

The highest dry density of which the layer can be compacted

Maximum Dry Density

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

Optimum Moisture Content

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

California Bearing Ratio

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.

Field Density Test

This test evaluates the structural strength of coarse aggregate.

Abrasion Test

Aggregate

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

Concrete Aggregates

Coarse aggregates retained on ___________

4.75 mm (Sieve No. 4)

Fine Aggregate passing _________ and retained on ________.

4.75 mm (No. 4), 0.075 mm (No. 200)

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.

Wash Test

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

Bulk Specific Gravity

______ 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.

Absorption

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

Absorption

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.

Bulk Specific Gravity

Apparent Specific Gravity

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

Saturated Surface Dry

Bulk SSD Specific Gravity

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

Soundness

Asphalt Aggregates

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.

Mineral Filler

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

Fractured Face

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

Laboratory Safety

What are the 5S

sort, set in order, shine, standardized, sustain

Sieve size 3"

75mm

Sieve size 2 1/2"

63mm

Sieve size No. 4

4.75mm

Sieve size No. 8

2.36mm

Sieve size No. 10

2.0

Sieve No. 16

1.18

Sieve No. 30

.60

Sieve No. 40

0.425

Sieve 50

0.300

Sieve No. 100

0.150

Sieve No. 200

0.075

Sieve 60

0.249