Zones of smear around vertical drains, Civil Engineering

Assignment Help:

Zones of smear around vertical drains

Smear zones are produced during the installation of vertical drains in that zone of soils surrounding the band drains are disturbed. Soils in smear zones are remoulded at the time of installation process and effectiveness of band drains is decreased. For example, the compressibility of surrounding soils is increased and this brings the reduction of their permeability. Basically with the reduced permeability of soils around band drains, it takes longer time to complete consolidation process. 

To prevent the formation of smear zones, raising and lowering of mandrel during drain installation must be minimized. Furthermore soil disturbance can be controlled by avoiding use of vibratory hammers that serve to drive drains into the ground. 

1988_Zones of smear around vertical drains.png

Fig: Smear zones in band drain


Related Discussions:- Zones of smear around vertical drains

TORSION, WHAT IS TRANSVERSE AND LONGITUDINAL REINFORCEMENT?

WHAT IS TRANSVERSE AND LONGITUDINAL REINFORCEMENT?

Define surface water treatment rule (swtr), Define Surface Water Treatment ...

Define Surface Water Treatment Rule (SWTR) SWTR sets forth primary drinking water regulations requiring treatment of surface water supplies or groundwater supplies under the di

Estimate the jam density in one lane of trucks, At a large port facility ne...

At a large port facility near New York City tractor-trailer trucks are lined-up in long queues as their drivers wait to have their containers inspected and documents processed.  As

Matlab, Pls provide matlab design for transportation engg.

Pls provide matlab design for transportation engg.

Process of lubrication of girder bearing, Q. Process of Lubrication of Gird...

Q. Process of Lubrication of Girder Bearing? Oiling and greasing of bearings is done to ensure that the bearings are well lubricated and working freely to permit expansion and

Explain the signalized intersections - transportation, Explain the Signaliz...

Explain the Signalized Intersections Cycle length - the time required for one complete sequence of all signal indications Phase - the right-of-way (green), change (yellow),

Impact of possible energy, a) Take into consideration the boiler efficiency...

a) Take into consideration the boiler efficiency, and verify the cost of heating the building, during the heating season, using present oil and gas prices.  b) Investigate the i

Telecommunication, Blocked process list is not maintioned in priority order...

Blocked process list is not maintioned in priority order why

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd