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30 Cards in this Set
- Front
- Back
- 3rd side (hint)
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This type of test is used on samples that represent materials to be used as backfill for abutments, as permeable material for under drains, as sand drains, as sand blanket for sand drain areas, and similar materials. |
Constant Head Test |
CHT |
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This is provided to force the water to move through the soil rather than around the outside of the ring. |
: O ring |
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It is a rounded silica sands of nearly pure quartz used in sand replacement method. |
Ottawa sand |
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In performing the Check Sum calculation, the total mass after sieving must agree with the dry mass before sieving to within how many percent? |
3% |
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What is the required amount of dried soil should be acquired when using the Pipette Method? |
50 gram |
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What is the compactive effort for standard Proctor Test? |
2375 lb/ft^3 |
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For sampling fine aggregates from stockpiles, what is the common apparatus used? |
Sampling tube |
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In conveyor belt sampling, how many equal increments should be gained? |
Minimum of 3 |
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It is carried out to test the hardness property of aggregates and to decide whether they are suitable for different pavement construction works. |
Abrasion test |
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It is a chemical reaction of certain reactive minerals in some aggregate and alkalies in the pore solution of concrete. |
Alkali silaca reaction |
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It is the blow count representation of the penetration resistance of a soil. |
N value |
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What is the maximum number of blows in standard penetration test? |
100 blows |
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A device to hold the specimen securely between two porous inserts in such way that torque is not applied to the specimen. |
Shear device |
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A penetrometer tip with a conical point having a 60° apex angle and a cone base area of 10 or 15 is advanced through the soil at a constant rate of ____. |
20 mm/s |
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A piezocone penetrometer that can contain porous filter element(s), pressure transducer(s), and fluid filled ports connecting the elements to the transducer to measure pore water pressure. |
Electronic piezocone penetrometer |
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16. This test method is used to evaluate the potential strength of subgrade, subbase, and base course material. |
California bearing ratio |
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It is the relationship between a soil water content and dry unit weight. |
Compaction curve |
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. This method covers the determination of the consolidated drained shear strength of a soil material. |
Direct shear stress |
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soil by specified rammer (impact load) |
Dynamic compaction |
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Standard groove cut in the soil pat in liquid limit test. |
12.7 mm |
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The time from the end of vane penetration to beginning rotation shall be no more than ____ |
5 minutes |
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Undisturbed and remolded vane tests shall have an interval of not less than? |
0.5-0.75m |
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Defined as the moisture content after which any further reduction of moisture does not cause volume reduction? |
Shrinkage limit |
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Expand the abbreviation "UU" |
Unconsolidated undrained |
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25. Who was the 1st person to define the limits of soil consistency for the classification of fine-grained soils? |
Albert atterberg |
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Used to determine the specific gravity of soil particles of both fine-grained and coarse-grained soils. |
Pycnometer |
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In Nuclear Density Test, what is the radioactive material that emits gamma radiation and can be translated to density by the use of detector? |
Cesium |
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It can be used to distinguish between silt and clay soils. These distinctions are used in assessing soils on which structures are to be built. |
Atterberg limit |
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Useful for titrations and also for boiling solutions when it necessary to keep evaporation to a minimum. |
Conical flask (erlenmeyer) |
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The water content at which soil changes from a plastic to a liquid state, when the soil specimen is just fluid enough for a groove to close when jarred in a specified manner. |
Liquid limit |
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