GEO TERMS: COMPACTION Flashcards
pick up the correct statement from the following:
A. the dry density reduces by addition of water after attaining optimum moisture content
B. the line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus
C. well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils
D. all the above
D. all the above
hydrometer readings are corrected for _____
A. temperature correction
B. meniscus correction
C. dispersing agent correction
D. temperature, meniscus dispersing agent corrections
D. temperature, meniscus dispersing agent corrections
with the increase in the amount of compaction energy
A. optimum water content increases but maximum dry density decreases
B. optimum water content decreases but maximum dry density increases
C. both optimum water content and maximum dry density increase
D. both optimum water content and maximum dry density decrease
B. optimum water content decreases but maximum dry density increases
the density of soil can be increased
A. by reducing the space occupied by air
B. by elastic compression of soil grains
C. by expelling water from pores
D. all the above
D. all the above
select the correct statement:
A. a uniform soil has more strength and stability than a nonuniform soil
B. a uniform soil has less strength and stability than a nonuniform soil
C. uniformity coefficient does not affect strength and stability
D. uniformity coefficient of a poorly graded soil is more than that of a well graded soil
B. a uniform soil has less strength and stability than a nonuniform soil
select the correct range of density index ID
A. ID >0
B. ID < 0
C. 0 < ID < 1
D. 0 < ID < 1
D. 0 < ID < 1
the ratio of e(max) and e(min) of silty sand is _____
A. 2.0
B. 2.5
C. 3.0
D. 3.5
C. 3.0
which of the following statements is correct?
A. uniformity coefficient represents the shape of the particle size distribution curve
B. for a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity
C. a soil is said to be well graded if it has most of the particles of about the same size
D. none of the above
D. none of the above
the ratio of the difference between the void ratio of the soil in its loosest state and its natural void ratio (e) to the difference between the void ratios in the loosest and fully dense state is generally termed as _____
A. degree of density
B. relativity
C. density index
D. all the above
D. all the above
pick up the correct statement from the following:
A. a maximum value of dry density is obtained at optimum water content
B. at low value of water content most soils tend to be stiff
C. at high water content, the dry density decreases with an increase of water content
D. all the above
D. all the above
compression of soil occurs rapidly if voids are filled with _____
A. air
B. water
C. partly with air and partly with water
D. none of these
A. air
for better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as _____
note: (OMC is optimum moisture content)
A. dry of OMC and wet of OMC
B. wet of OMC and dry of OMC
C. wet of OMC and wet of OMC
D. dry of OMC and dry of OMC
B. wet of OMC and dry of OMC
which of the following is a measure of particle size range?
A. effective size
B. uniformity coefficient
C. coefficient of curvature
D. none of the above
B. uniformity coefficient
the maximum dry density up to which any soil can be compacted depends upon _____
A. moisture content only
B. amount of compaction energy only
C. both moisture content and amount of compaction energy
D. none of the above
C. both moisture content and amount of compaction energy
pick up the incorrect statement from the following:
A. compaction has no effect on the structure of a soil
B. permeability decreases with increase in the dry density of a compacted soil
C. a wet side compacted soil is more compressible than a dry side compacted soil
D. dry side compaction soils swell more when given access to moisture
A. compaction has no effect on the structure of a soil
