Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)
Tags: GROUND, IMPROVEMENT, TECHNIQUES, HIGHWAYS, full, report, GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS, GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS ppt, GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS pdf, GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS seminar, GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS seminar report, ground improvement techniques, ground improvement techniques ppt, ground improvement techniques pdf, ground improvement techniques book,
Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
07-02-2010, 08:03 PM
Post: #1
GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report

.ppt  ground improvement technioques for high ways.ppt (Size: 2.96 MB / Downloads: 2135)

GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS

INTRODUCTION

Transportation - needed for the development of the country.
The main mode of transportation is by road or highways.
In the process of road development, the alignment of road may have to be fixed through the soils which may not bear the traffic loads .
There are various techniques of ground improvement.

METHODS FOR GROUND IMPROVEMENT

Soil stabilization
Vertical drains
Stabilization trenches
Capillary cut-off
Soil nailing
Stone columns
Vibro compaction
Dynamic compaction

SOIL STABILIZATION

Improvement of stability or bearing capacity of soil by use of controlled compaction or by the addition of suitable admixtures or stabilizers .

There are various methods of soil stabilization .


The methods of soil stabilization are:

Mechanical Stabilization
Soil-cement Stabilization
Soil-lime Stabilization
Soil-bitumen Stabilization
Chemical Stabilization
Electrical Stabilization
Stabilization by grouting
Stabilization by geotextile and fabrics
Reinforced earth
Using bioenzymes


Mechanical Stabilization

Process of improving the properties of soil by changing its gradation.
Two or more natural soils are mixed to obtain a composite material.

Cement Stabilization

Done by mixing soil and cement with water and compacting the mix to attain a strong material.

Lime Stabilization

Lime stabilization is done by adding lime (2%-10%) to soil.

VERTICAL DRAINS

Act as free draining water channel. surrounded by a thin filter jacket which prevents the surrounding soil from entering the core.
A vertical sand drain accelerates the rate of consolidation.
Installation of vertical sand drains is a convenient technique for stabilization of soft and compressible soil .
There are two types of vertical drains - sand drains and sand wicks.

Sand drains

Typically 200-500 mm in dia.
Formed by infilling sand in to a hole in the ground.
Hole formed by driving ,jetting or augering.
Typical spacing 1.5 - 6.0 .

Sand wicks

Sand wicks are improved technique of sand drains.
A small diameter hole is made by driving mandrel or by boring.
Then cylindrical bag with sand is lowered into this.

STABILIZING TRENCHES

Excavation which has a blanket of filter material between 0.5m and 1.00 m thick against its upstream slope and at the bottom of system for collecting and eliminating water.

Improves the stability of embankment by providing drainage and replacing weaker material with better material .

SOIL NAILING

Earth retention structure that combines reinforcements and shortcrete to support excavations , hillside , embankment steeping etc¦

The nails must have bending stress. The tension developed in nails provides resisting forces which stabilize the soil mass.

CONCLUSIONS

While constructing highways different ground conditions are encountered. Considering all factors a suitable ground improvement technique has to be done. Ground improvement techniques have been extensively used by developed countries.
Lime stabilization is suitable for expansive soil like black cotton soils.
In bitumen stabilization optimum content of bitumen vanes from 4 to 6 % soil.
Electrical and Chemical stabilization are expensive compared to others.
Stabilization by grouting is suitable only for soils with high permeability.
Stabilization by Terra Zyme is most effective for fine grained soil.

Please Use Search http://seminarprojects.com/search.php wisely To Get More Information About A Seminar Or Project Topic
24-09-2010, 04:07 PM
Post: #2
GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report

.ppt  GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS.ppt (Size: 2.28 MB / Downloads: 541) This article is presented by:NACHIKETHAN



INTRODUCTION


Ground improvement technique is the process of improving the geo-technical characteristics of soil used in construction.

The soil at a construction site is not always totally suitable for supporting structures such as buildings, bridges, highways and dams. For example, In granular soils, in-situ soil may be very loose and indicate large elastic settlement. Under these conditions, soil needs to be densified to increase its unit weight and shear strength.


Objectives of ground improvement is to:


1.Reduce settlement of structures.
2.Improve shear strength and bearing capacity of shallow foundations.
3.Increase factor of safety against possible slope failure of embankments and dams.
4.Reduce shrinkage and swelling of soils


hope this powerpoint presentation will helpful to you!!!!Rolleyes

Please Use Search http://seminarprojects.com/search.php wisely To Get More Information About A Seminar Or Project Topic
30-09-2010, 10:43 AM
Post: #3
RE: GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report

.doc  ground improvement.doc (Size: 1.76 MB / Downloads: 436)
GROUND IMPROVEMENT TECHNIQUES

Submitted by : Guided by:
Kuldeep Kumar Kanauzia Mr. H.S. Nirajan
Sr. No. 51/07 Astt. Professor


ABSTRACT
Suppose while working as a Geotechnical Engineer, we encounter the following situation: a three-storied office building with load bearing walls has to be constructed. At the site, loosely dumped material exits down to a depth of 7 meters underlain by dense sand. Had the soil at shallow depth strong, such a building could have been founded on strip footings. Three decades ago you would have had to choose between either giving up this site altogether and finding a new site or founding the building on raft or on piles. Both raft and piles are far more expensive than strip footings. Today you have another option, an option that engineers have gradually developed the technology for the last two/three decades, an option that emerged because when engineers encounter such situations they began to ask themselves that “can I make this soil stronger?” and as an answer they develop the techniques to modify and improve soil.
16-07-2011, 04:52 PM
Post: #4
RE: GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report

.doc  Aayillia cont.doc (Size: 329.5 KB / Downloads: 167)
1. INTRODUCTION
Large civil engineering projects are being executed in all over the country in order to enhance the infrastructure of the country. Infrastructure facilities have to be often built at sites where the soil conditions are not ideal. The insitu soil characteristics of a construction site are different from those desired, and almost always far from ideal for a designed need. With increased urban development, site with favorable foundation conditions became depleted. At times the civil engineer has been forced to construct structures at site selected for reasons other than soil conditions. Thus it is increasingly important for the engineer to know the degree to which soil properties may be improved or other alterations that can be thought of for construction of an intended structure at stipulated site.
If unsuitable soil conditions are encountered at the site of a proposed structure, one of the following four procedures may be adopted to insure satisfactory performance of the structure.
• By pass the unsuitable soil by means of deep foundations extending to a suitable bearing material.
• Redesign the structure and it's foundation for support by the poor soil. This procedure may not be feasible or economical.
• Remove the poor material and either treat it to improve and replace it (or)
Substitute for it with a suitable material.
• Treat the soil in place to improve its properties.
Rigid foundations such as piling present a solution but these are often expensive. In such circumstances, ground improvement using different techniques offers a proved and economic solution. At present a variety of soil improvement techniques are available for making soil to bear any type of structure on it and also for mitigation of seismic hazards. The costs of these methods vary widely and the conditions under which they can be used are influenced by nature and proximity of structures and construction facilities.
On the basis of mechanism by which they improve the engineering properties of soil, the most of common of these can be divided into the following major categories. These are
• Densification techniques.
• Reinforcement techniques.
• Stabilization techniques.
• Miscellaneous methods.
The important ground improvement techniques for the highways are discussed in this paper.
From the methods listed above, there are some other simple methods like removal and replacement of soil. In this paper these are discussed first before taking up above techniques.
2. REMOVAL AND REPLACEMENT OF SOIL:
One of the oldest and simplest soil improvement methods is to simply excavate the unsuitable soil and replace them with compacted fill. This method is often used when the problem the soil is that it is too loose. In that case, the same soils used to build the fill, except now it has a higher unit weight (because of compaction) and thus has been better engineering properties. This is a common way to remediate problems with collapsible soils.
Removal also may be available option when the excavated soils have other problems, such as contamination or excessive organics, and need to hauled away. This method can be expensive because of the hauling costs and the need for imported soils to replace those that were excavated. It also can be difficult to find a suitable disposal site for the excavated soils.
Removal and replacement is generally practical only above the ground water table. Earthwork operations become more difficult when the soil is very wet, even when the free water pumped out, and thus are generally avoided unless absolutely necessary.
3. PRECOMPRESSION OF SOIL:
Another old and simple method of improving soils is to cover them with a temporary surcharge fill as shown in figure. This method is called precompression, preloading, or surcharging. It is especially useful in soft clayey and silty soils because the static weight of the fill causes them to consolidate, thus improving both settlement and strength properties. Once the desired properties have been obtained, the surcharge is removed and construction proceeds on improved site.
Pre-compression has the following advantages
• It requires only conventional equipment earthmoving equipment, which is readily available. No special or proprietary equipment is needed.
• Any grading contractor can perform the work.
• The results can be effectively monitored by using appropriate instrumentation and ground level surveys.
• The method has a long track record of success.
• The cost is comparatively low, so long as soil for preloading is readily available.
However, there also are disadvantages
• The surcharge fill generally must extend horizontally at least 10m beyond the perimeter of the planned construction. This may not possible for confined sites.
• The transport of large quantities of soil onto the sites may not be practical, or may have unacceptable environmental impacts (i.e., dust, noise, traffic) on the adjacent areas.
• The surcharge must remain in place for months or years, thus delay in construction.
18-08-2011, 10:45 AM
Post: #5
RE: GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report

.doc  GROUND IMPROOVEMENT (CIVIL)_Sreevidhya@Students.doc (Size: 135.5 KB / Downloads: 135)
1. ABSTRACT:
Ground improvement is the most imaginative field of geotechnical engineering. It is a field in which the engineer forces the ground to adopt the project's requirements, by altering the natural state of the soil, instead of having to alter the design in response to the ground's natural limitations. The results usually include saving in construction cost and reduction of implementation time.
There are number of techniques available for improving the mechanical and engineering properties of the soil. However, each technique has some limitations and suit abilities to get maximum improvement in the soil conditions with minimum effort. Some of the important techniques are discussed in this paper.
To improve the strength of the soils, especially in case of granular type of soils, COMPACTION METHODES are found as best methods among all type of techniques. Based on the mechanism applied for compacting the soil, it is sub divided into different methods like dynamic compaction, blasting, vibro techniques ...etc.These are briefly discussed in this paper.
When there are some limitations encountered for applying the above technique, grouting techniques, stabilization of soil using different admixtures can be adopted effectively which can bring variations in the soil conditions. The various types of above techniques are briefly discussed in this paper.
Finally, recent advancements in ground improving techniques using GEOTEXTILES, ELECTRIC TREATMENT METHODES are also briefly discussed in this paper. These techniques are widely used in these days.
2. INTRODUCTION:
Large civil engineering projects are being executed in all over the country in order to enhance the infrastructure of the country. Infrastructure facilities have to be often built at sites where the soil conditions are not ideal. The insitu soil characteristics of a construction site are different from those desired, and almost always far from ideal for a designed need. With increased urban development, site with favorable foundation conditions became depleted. At times the civil engineer has been forced to construct structures at site selected for reasons other than soil conditions. Thus it is increasingly important for the engineer to know the degree to which soil properties may be improved or other alterations that can be thought of for construction of an intended structure at stipulated site.
If unsuitable soil conditions are encountered at the site of a proposed structure, one of the following four procedures may be adopted to insure satisfactory performance of the structure.
• By pass the unsuitable soil by means of deep foundations extending to a suitable bearing material.
• Redesign the structure and it's foundation for support by the poor soil. This procedure may not be feasible or economical.
• Remove the poor material and either treat it to improve and replace it (or)
substitute for it with a suitable material.
• Treat the soil in place to improve its properties.
Rigid foundations such as piling present a solution but these are often expensive. In such circumstances, ground improvement using different techniques offers a proved and economic solution. At present a variety of soil improvement techniques are available for making soil to bear any type of structure on it and also for mitigation of seismic hazards. The costs of these methods vary widely and the conditions under which they can be used are influenced by nature and proximity of structures and construction facilities.
3. GROUND IMPROVEMENT TECHNIQUES:
On the basis of mechanism by which they improve the engineering properties of soil, the most of common of these can be divided into the following major categories. These are
• Densification techniques.
• Reinforcement techniques.
• Stabilization techniques.
• Miscellaneous methods

Apart from the methods listed above, there are some other simple methods like removal and replacement of soil. In this paper these are discussed first before taking up above techniques.
3.1. REMOVAL AND REPLACEMENT OF SOIL:
One of the oldest and simplest soil improvement methods is to simply excavate the unsuitable soil and replace them with compacted fill. This method is often used when the problem the soil is that it is too loose. In that case, the same soils used to build the fill, except now it has a higher unit weight (because of compaction) and thus has been better engineering properties. This is a common way to remediate problems with collapsible soils.
Removal also may be available option when the excavated soils have other problems, such as contamination or excessive organics, and need to hauled away. This method can be expensive because of the hauling costs and the need for imported soils to replace those that were excavated. It also can be difficult to find a suitable disposal site for the excavated soils.
Removal and replacement is generally practical only above the ground water table. Earthwork operations become more difficult when the soil is very wet, even when the free water pumped out, and thus are generally avoided unless absolutely necessary.
3.2. PRECOMPRESSION OF SOIL:
Another old and simple method of improving soils is to cover them with a temporary surcharge fill as shown in figure. This method is called precompression, preloading, or surcharging. It is especially useful in soft clayey and silty soils because the static weight of the fill causes them to consolidate, thus improving both settlement and strength properties. Once the desired properties have been obtained, the surcharge is removed and construction proceeds on improved site.
Pre-compression has the following advantages
• It requires only conventional equipment earthmoving equipment, which is readily available. No special or proprietary equipment is needed.
• Any grading contractor can perform the work.
• The results can be effectively monitored by using appropriate instrumentation and ground level surveys.
• The method has a long track record of success.
• The cost is comparatively low, so long as soil for preloading is readily available.
However, there also are disadvantages
• The surcharge fill generally must extend horizontally at least 10m beyond the perimeter of the planned construction. This may not possible for confined sites.
• The transport of large quantities of soil onto the sites may not be practical, or may have unacceptable environmental impacts (i.e., dust, noise, traffic) on the adjacent areas.
• The surcharge must remain in place for months or years, thus delay in construction.
Rating GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report Options
Share GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : ground, soil improvement techniques, ground iprovement, ppts on soil improvement techniques, abstract for ppt of soil improvment techniques, advance ground improvement tech seminar, pdf ground improvement techniques using compaction, ppt ground engineering, bearing capacity of soil ppt, capillary cutoff for soil stabilisation, selection of suitable ground improvement techniques, ground improvement techniques ppt, stabilisation of soil by grounding, ground improvement techniques, ground improvement techniques on roadways, improvment of proprties of soil, improvment of properties of soil, ground stabilization techniques trenches, ppt soil stabilization methods,

[-]
Quick Reply
Message
Type your reply to this message here.


Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  reactive powder concrete full report project report tiger 8 14,884 17-10-2014 10:25 AM
Last Post: mkaasees
  RUBBERISED BITUMEN FOR ROAD WORKS full report project report tiger 18 13,954 07-10-2014 09:39 AM
Last Post: mkaasees
  SEWAGE WATER AS THE SOURCE OF IRRIGATION AND PLANT NUTRIENTS full report project report tiger 3 11,892 29-09-2014 11:57 AM
Last Post: mkaasees
  SOIL STABILIZATION WITH FLYASH AND RICE HUSK ASH SEMINAR REPORT seminar code 0 98 27-09-2014 11:57 AM
Last Post: seminar code
  GREEN BUILDINGS SEMINAR REPORT seminar code 0 180 23-09-2014 03:16 PM
Last Post: seminar code
  METHODS OF REPAIRING CONCRETE SEMINAR REPORT seminar code 0 156 20-09-2014 09:53 AM
Last Post: seminar code
  PRECAST CONCRETE CONSTRUCTION SEMINAR REPORT project maker 0 168 19-09-2014 02:13 PM
Last Post: project maker
  TALL STRUCTURES SEMINAR REPORT project maker 0 173 18-09-2014 11:40 AM
Last Post: project maker
  Concrete as a Material seminar report project maker 0 134 18-09-2014 10:49 AM
Last Post: project maker
  INDOOR AIR POLLUTION SEMINAR REPORT project maker 0 134 12-09-2014 02:36 PM
Last Post: project maker
This Page May Contain What is GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report And Latest Information/News About GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report,If Not ...Use Search to get more info about GROUND IMPROVEMENT TECHNIQUES FOR HIGHWAYS full report Or Ask Here

Options: