Geotechnical Engineering
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Which best material for backfill of retaining wall?
Preet Chovatiya
For draining area, sandy soil or sandy gravel is best for retaining wall backfilling material, because It cause easily water draining. If your retaining wall is built on filling material then you have to use strong soil blend like silty Sand and sandy clay That should be meet the requirements of strRead more
For draining area, sandy soil or sandy gravel is best for retaining wall backfilling material, because It cause easily water draining.
If your retaining wall is built on filling material then you have to use strong soil blend like silty Sand and sandy clay That should be meet the requirements of structure requirements and geotechnical properties.
See lessWhat is a triaxial test?
fathima
a triaxial test involves confining a cylindrical soil or rock specimen in a pressure shell to stimulate the stress condition and then shearing to failure in order to determine the shear strength properties of the soil sample. the sample should be saturated then consolidated and finally sheared, mostRead more
a triaxial test involves confining a cylindrical soil or rock specimen in a pressure shell to stimulate the stress condition and then shearing to failure in order to determine the shear strength properties of the soil sample.
the sample should be saturated then consolidated and finally sheared, most commonly in compression
See lessWhat is the difference between black cotton soil and clay?
Abbas Khan Civil Engineer
Black Cotton soil ; Black Cotton Soil is a heavy clayey soil, varying from clay to loam.The black color in black cotton soil is due to the presence of Titanium Oxide in a little concentration. Generally, it is light to dark appearance. Found in central and southern parts of India. Clay SOIL; Clay soRead more
Black Cotton soil ; Black Cotton Soil is a heavy clayey soil, varying from clay to loam.The black color in black cotton soil is due to the presence of Titanium Oxide in a little concentration. Generally, it is light to dark appearance. Found in central and southern parts of India.
Clay SOIL; Clay soil is composed of very small fine particles and not much organic in nature. It contains clay minerals which, when get wet, develops plasticity. Clay minerals have hydrous Aluminium phyllosilicates.
See lessIf we reduce water content below the shrinkage limit of soil, What will happen in the pore of soil?
Vivek Patel
shrinkage limit is the maximum water content at which if we reduce water content further than soil volume doesn't change, we can also say that at shrinkage limit, water is in just saturated stage. let's see the graph of water content and volume change with shrinkage limit ws= shrinkage limit wp= plaRead more
shrinkage limit is the maximum water content at which if we reduce water content further than soil volume doesn’t change,
we can also say that at shrinkage limit, water is in just saturated stage.
let’s see the graph of water content and volume change with shrinkage limit
ws= shrinkage limit
wp= plastic limit
wl=liquid limit
at below shrinkage water content water is spill out/remove from voids of soil and that voids fill with the air. Hence voids doesn’t change, so volume doesn’t change. and soil become 3 phase structure air, water and solid particles.
See lessWhat is Relative Compaction?
Vivek Patel
Relative compaction is a ration of the density of soil at site to the maximum dry density of soil. like we have maximum dry density of soil have 1800 kg/m3 which determine in lab now on site we can archive 1700 kg/m3 by compaction of dumped soil so relative density of that soil on site is =1700/1800Read more
Relative compaction is a ration of the density of soil at site to the maximum dry density of soil.
like we have maximum dry density of soil have 1800 kg/m3 which determine in lab
now on site we can archive 1700 kg/m3 by compaction of dumped soil
so relative density of that soil on site is =1700/1800=0.9444 = 94.44%
it is use for
- to know how much density we archive compare to design in lab
- sometime in specification minimum criteria of relative density are given, ex- minimum relative density at whole site should be 90%.
- from relative density we can calculate actual movement of soil, which is very important in tall building and structural durability calculation
See lessWhich are the factor that affect Permeability of Soil ?
Vivek Patel
permeability of soil is property of soil that soil allows to water flow pass through soil media. factor affecting of soil permeability is soil partical size soil partical charge liquid viscosity tempreture soil structure like disperse, flocculated, single grain etc degree of saturation shape of partRead more
permeability of soil is property of soil that soil allows to water flow pass through soil media.
factor affecting of soil permeability is
See lessWhat is Creep in Soil Mechanics?
Kuldeep Singh
Creep in soil is pretty much similar in concept to creep in general. Only the manifestation and consequences are different in different materials and can be very peculiar in soil. Creep in soil is the time dependant development of shear strains and/or volumetric strains in a soil mass in the stateRead more
Creep in soil is pretty much similar in concept to creep in general. Only the manifestation and consequences are different in different materials and can be very peculiar in soil.
Creep in soil is the time dependant development of shear strains and/or volumetric strains in a soil mass in the state of a constant effective stress for a prolonged period of time.
It is also sometimes referred to as the gradual loss of cohesion over a prolonged period of time in soil.
Unlike concrete, where creep results in deflection and cracking, creep in soil to may lead to long term settlement, movements of slopes, gradual loss of soil from slopes or shear failure.
See lessWhich type of soil is present in desert?
DevilAVRT
Most desert soils are called Aridisols (dry soil). However, in really dry regions of the Sahara and Australian outback, the soil orders are called Entisols. Entisols are new soils, like sand dunes, which are too dry for any major soil horizon development. Most desert soils are called Aridisols (dryRead more
Most desert soils are called Aridisols (dry soil). However, in really dry regions of the Sahara and Australian outback, the soil orders are called Entisols. Entisols are new soils, like sand dunes, which are too dry for any major soil horizon development.
Most desert soils are called Aridisols (dry soil).
- Desert soils, or Aridisols, occupy the third-largest land area on the Earth
- Desert soils often are used for wildlife and recreation
- Desert soils can be used for crop production, if irrigation is available.
See less