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Full-Text Articles in Entire DC Network
Effect Of Neighboring Footings On Single Footing Settlement, Marawan Shahein, Ali Hefdhallah
Effect Of Neighboring Footings On Single Footing Settlement, Marawan Shahein, Ali Hefdhallah
International Conference on Case Histories in Geotechnical Engineering
The most economic type of foundations is shallow isolated footings. It is common practice to estimate settlement of shallow isolated footings without consideration of the influence of neighboring footings or loaded areas. In fact there is few, if any, available method to estimate settlement of isolated footings taking into consideration such an effect of neighboring loaded areas. Such an effect might be vital in a lot of cases. This paper presents a case history that shows the importance of such an effect. The case history in hand consists of 28 auxiliary buildings of an Electrical Power plant near Cairo, Egypt. …
Using The 1911 Austin Dam Failure Case History In Undergraduate Teaching, Andrew T. Rose
Using The 1911 Austin Dam Failure Case History In Undergraduate Teaching, Andrew T. Rose
International Conference on Case Histories in Geotechnical Engineering
The 1911 sliding failure of Austin Dam in Potter County, Pennsylvania presents an interesting case history combining an engineering failure with ethical, social legal and regulatory issues. The concrete gravity dam, completed in December 1909, was plagued by poor design and construction, influenced greatly by the owner pressuring the designer to keep costs low. Seepage through the foundation, an inadequate shear key, and cracking of the cyclopean concrete, all contributed to the eventual catastrophic failure that destroyed the towns of Austin and Costello, claiming at least 78 lives. As a case history, the failure of Austin Dam has applicability to …
Base Grouting Case Studies Including Full Scale Comparative Load Testing, Jon Sinnreich, Robert C. Simpson
Base Grouting Case Studies Including Full Scale Comparative Load Testing, Jon Sinnreich, Robert C. Simpson
International Conference on Case Histories in Geotechnical Engineering
Base grouting is becoming more widely promoted in the drilled shaft industry as a means to improve shaft response to load. There are a limited number of full-scale field comparisons of test shafts which have been base grouted and adjacent test shafts which have not. This paper presents several case histories of full-scale static load test shafts as well as the results of the tests conducted on adjacent shafts with and without base grouting. The paper compares six pairs of adjacent grouted and ungrouted shafts on 5 separate projects in various parts of the United States. All tests were performed …
Evaluation Of Treatment Methods Used For Construction On Expansive Soils In Egypt, Ahmed T. M. Farid, Ihab A. Hamid
Evaluation Of Treatment Methods Used For Construction On Expansive Soils In Egypt, Ahmed T. M. Farid, Ihab A. Hamid
International Conference on Case Histories in Geotechnical Engineering
The soil formation in this arid area is sometimes an expansive problematic soil. Due to the lake of the construction experience on this problematic soil, many defects are appeared in the new buildings established in these arid areas. In this paper, a focusing on the treatment method using soil replacement for expansive soil formation. In the other hand, some case studies were illustrated to show the different types of problems appeared due to the different construction methods used. Finally, a conclusion about how to overcome these defects happened due to this treatment method for this problematic soil is mentioned. Some …
Micropiled-Raft Foundations For High-Rise Buildings On Soft Soils — A Case Study: Kerman, Iran, Hessam Yazdani, Mehdi Momeni, Kianoosh Hatami
Micropiled-Raft Foundations For High-Rise Buildings On Soft Soils — A Case Study: Kerman, Iran, Hessam Yazdani, Mehdi Momeni, Kianoosh Hatami
International Conference on Case Histories in Geotechnical Engineering
For the structures supported on soft soils, piled raft foundations have been shown to be more economical than conventional piled foundations. In piled raft foundations, the bearing capacity of the underlying soil is taken into account to support the superstructure loads and the piles are placed such that they increase the bearing capacity of the raft and control both the total and differential settlements of the superstructure. In the city of Kerman, Iran, the predominance of soft soils had historically hampered the construction of high-rise buildings across the city. Recently, an eighteen-story reinforced concrete building was constructed on a micropiled-raft …
Pile Driving Adjacent To Municipal Drinking Water Storage Facility, R. Eric Zimmerman, Gregory R. Reuter, Chad A. Underwood
Pile Driving Adjacent To Municipal Drinking Water Storage Facility, R. Eric Zimmerman, Gregory R. Reuter, Chad A. Underwood
International Conference on Case Histories in Geotechnical Engineering
An unexpected response occurred as piles were driven within 3 feet of the west wall of an existing municipal drinking water storage reservoir. Being located in a confined urban space, the expansion of the parking garage at a facility on the south end of Lake Michigan required the installation of 122 steel H-piles as close as 3 feet to the reservoir. Historically, structures on the site were supported on either shallow spread footings or H-piles driven to bedrock. At the contractor’s suggestion, considerable project savings were achieved by driving the H-piles to an extremely hard clay layer (“Chicago hardpan”) above …
Soil Reinforcement By Rigid Inclusions: Contamination Of An Oil Storage Tank, Mounir Bouassida, Wafy Bouassida
Soil Reinforcement By Rigid Inclusions: Contamination Of An Oil Storage Tank, Mounir Bouassida, Wafy Bouassida
International Conference on Case Histories in Geotechnical Engineering
An oil storage tank at the North suburb La Goulette (Tunisia) was founded on reinforced soft soil by floating sand columns of 6 m in length and 11% of improvement area ratio within a thick compressible clayey soil. Serious contamination of tank due to very significant differential settlement forces the decision to terminate its operations. Reinforcement by inclined rigid inclusions was suggested to neutralize the evolution of consolidation settlement in sub compressible clay layers. Numerical predictions were implemented for the study of the post behavior of tank on reinforced soil by rigid inclusions. Effectiveness of solution using inclined rigid inclusions …
Case Histories Of Earthen Dam Failures, R. P. Sharma, Ali Kumar
Case Histories Of Earthen Dam Failures, R. P. Sharma, Ali Kumar
International Conference on Case Histories in Geotechnical Engineering
Historical study of dams conceived in earlier times is essential. To continue advancing, the engineering profession must periodically review past problems and the lessons that they taught. Candid sharing of information on failures as well as successes is needed. In fact, some of the most valuable learning has come from projects where errors have been clear in retrospect. In recent years, dam safety has drawn increasing attention from the public. This is because floods resulting from breaching of dams can lead to devastating disasters with tremendous loss of life and property, especially in densely populated areas. Past dam failure disasters …
Embankment Construction Using Column Supported Embankment, Aravinda Ramakrishna, Elizabeth Trimpin, Raymond Mankbadi
Embankment Construction Using Column Supported Embankment, Aravinda Ramakrishna, Elizabeth Trimpin, Raymond Mankbadi
International Conference on Case Histories in Geotechnical Engineering
The construction of roadway embankments over soft, compressible soils challenges designers with managing large and differential settlements, maintaining embankment stability, and minimizing construction costs associated with long consolidation periods. These challenges can be successfully tackled with the use of an in-situ soil improvement technique such as the Column Supported Embankment (CSE). The Column Supported Embankment involves constructing a pattern of cement-grouted columns in-situ, using the vibro-displacement or displacement-auger technique. The columns are constructed to bear on dense sand strata underlying cohesive strata that would otherwise consolidate under the embankment loading. A load transfer platform (LTP) is used to effectively distribute …
Failure Investigation And Restoration Of Two Cellular Sheetpile Structures, Frank M. Clemente
Failure Investigation And Restoration Of Two Cellular Sheetpile Structures, Frank M. Clemente
International Conference on Case Histories in Geotechnical Engineering
The Trainer - Delco Tap - Mickleton 220-38 kilo-volt transmission lines are carried across the Delaware River by two 332-foot high steel latticed towers each founded on a man-made foundation island structure. Each island structure is comprised of four interconnected cellular sheetpile structures. One island, suffered a severe partial failure due to long-term scour in the Delaware River, near Chester, Pennsylvania. The other island exhibited early symptoms of potential failure, also due to scour. The client was the Philadelphia Electric Company, now known as PECO, acting on behalf of the owner, the Atlantic Electric Company (AECO). The author served as …
Numerical Analyses Of Soil Deformations Around Deep Excavations, Oktay Sevencan, Kutay Ozaydin, Havvanur Kilic
Numerical Analyses Of Soil Deformations Around Deep Excavations, Oktay Sevencan, Kutay Ozaydin, Havvanur Kilic
International Conference on Case Histories in Geotechnical Engineering
In this study, the deep excavation of Cincin Station located along the Bağcılar - Otogar metro line which is currently under construction in Istanbul is modeled numerically. The excavation (depth 32.5 m) of the station is carried out with a surrounding slurry trench diaphragm wall and top-down construction method. The six slabs of the station building and the foundation mat are used as support elements. Lateral soil displacements are measured with inclinometers placed in the wall and nearby soil layers. The results of numerical analysis using soil profile and geotechnical parameters obtained from conventional field and laboratory tests and measured …
Investigation Of The Effect Of Modeling Of Control Tunnel In Retaining Structure Of J2 Station Of Mashhad Metro Using Plaxis 2d, S. M. Mousavi, F. Rouzmehr, A. H. Fazli
Investigation Of The Effect Of Modeling Of Control Tunnel In Retaining Structure Of J2 Station Of Mashhad Metro Using Plaxis 2d, S. M. Mousavi, F. Rouzmehr, A. H. Fazli
International Conference on Case Histories in Geotechnical Engineering
Nowadays using of underground concrete arch excavation method is very common for execution of retaining structures (soldier structure) of deep and semi deep metro stations all around the world. In this method executer can use retaining structure as a part of main structure of station in next construction steps with using of piles of retaining structure as a part of main structure's wall. One of the first steps in building retaining structure of metro station is control tunnel (patrol tunnel) that usually is a prefabricated controlling tunnel in the middle of retaining structure. This tunnel is used for digging bores …
Stability Analysis Of Behesht-Abad Water Conveyance Tunnel Inlet Portal Using Experimental, Limit Equilibrium And Numerical Methods, Arash Mohammadi, Mahmoud Hashemi, Hooman Sharifpour
Stability Analysis Of Behesht-Abad Water Conveyance Tunnel Inlet Portal Using Experimental, Limit Equilibrium And Numerical Methods, Arash Mohammadi, Mahmoud Hashemi, Hooman Sharifpour
International Conference on Case Histories in Geotechnical Engineering
The Behesht-abad Water Conveyance Tunnel is one of the most important tunnels conveying water to central Iran plain having 60 km length and 6 m diameter. The tunnel portal intersects with important faults of the region which is nearby Ardal city. Therefore, the rock mass surrounding the tunnel portal faces instability problem. Initially, the joints characteristics of the rock mass surrounding the inlet portal were evaluated to find the dominant joint sets along with the characteristics required for stability analyses inputs. Also the deformation modulus and other engineering properties of the rock mass were assessed using the available drilled boreholes …
Self Hardening Slurry Wall Installation By Hydromill At The Herbert Hoover Dike – An Innovative Solution, Mario Mauro, Carlos Morales, Jeff Taylor
Self Hardening Slurry Wall Installation By Hydromill At The Herbert Hoover Dike – An Innovative Solution, Mario Mauro, Carlos Morales, Jeff Taylor
International Conference on Case Histories in Geotechnical Engineering
In 2007 the US Army Corps of Engineers classified the Herbert Hoover Dike in Florida as a DSAC 1 dam, and started the implementation of one of the largest dam rehabilitation projects in the nation. The construction of the cutoff wall is a key feature of this rehabilitation work to upgrade the dike to current dam safety criteria. The cutoff wall installation is currently being completed on Reach 1, which extends from Port Mayaca to Belle Glade, under a Multiple Task Order Contract based on performance specifications and stringent verification criteria. For the construction of the cutoff wall TREVIICOS selected …
Lateral Movements Of A Bridge Abutment Due To Compressible Foundation Soils, Alper Turan, Tony Sangiuliano, M. Shahria Alam, M. Hesham El Naggar
Lateral Movements Of A Bridge Abutment Due To Compressible Foundation Soils, Alper Turan, Tony Sangiuliano, M. Shahria Alam, M. Hesham El Naggar
International Conference on Case Histories in Geotechnical Engineering
Highway approach embankments are often constructed over weak and compressible soils. The consolidation settlements induced by the embankment loads are known to result in downdrag forces and lateral forces on the piles supporting the bridge abutments. Several approaches are commonly employed during construction of highway bridges in Ontario in order to reduce these forces. These approaches include: preloading and surcharging to achieve the anticipated settlements prior to the installation of abutment piles; application of lightweight fill materials such as expanded polystyrene and expanded pelletized blast furnace to reduce embankment loads; and measures to expedite pore water pressure dissipation such as …
Influence Of Dam And Foundation Discountinuities Using Discountinuum Approach — A Case Study, Shilpa Pal, Dilip K. Paul
Influence Of Dam And Foundation Discountinuities Using Discountinuum Approach — A Case Study, Shilpa Pal, Dilip K. Paul
International Conference on Case Histories in Geotechnical Engineering
Dam-foundation interaction plays an important role in the design and analysis of concrete gravity dams as has been reviewed from the failures of dams in the literature. The objective of the study is to understand the behavior of a concrete gravity dam taking into account the effect of dam and foundation discontinuities using three-dimensional Distinct Element Code. Different models have been formulated considering the complexities involved in the modeling of the dam structure, dam-foundation system and the results have been compared. Modeling the dam with the discontinuity in the form of crack which runs through the concrete section has a …
A 2-Dimentional Approach For Numerical Modeling Of Seismic Gravel Drains In Liquefiable Grounds, Mahmood Seid-Karbasi, Roberto Olivera, Upul Atukorala
A 2-Dimentional Approach For Numerical Modeling Of Seismic Gravel Drains In Liquefiable Grounds, Mahmood Seid-Karbasi, Roberto Olivera, Upul Atukorala
International Conference on Case Histories in Geotechnical Engineering
Liquefaction of water saturated granular soils is one of the major risks thai affect the safety and earthquake pcrfonnancc of infraSlmC\urc such as bridges, dams, ports, and lifelines in various parts of Ihe world. The seismically-induced ground deformations arc often Ihe main concern when liquCr:1cl ion occurs in significant zones of an earth Sinlcturc or soil foundat ion. Recent studies ineluding field data, centrifuge model testing and numerical investigations suggest that one of the promising measures 10 alleviate large earthqu.ake-induced deformat ions and ground failures is by installing stone columns and/or gravel drains. Design of such treatment scheme needs to …
Ground Deformations Observed After 23.10.2011 MW 7.2 Van Earthquake (Turkey), Mutluhan Akin, Ali Ozvan, Muge K. Akin, Tamer Topal
Ground Deformations Observed After 23.10.2011 MW 7.2 Van Earthquake (Turkey), Mutluhan Akin, Ali Ozvan, Muge K. Akin, Tamer Topal
International Conference on Case Histories in Geotechnical Engineering
A destructive earthquake with a moment magnitude of 7.2 occurred in the north of the Van province (Turkey) on 23rd October 2011 at 13:41 local time and caused approximately 600 deaths and more than 4000 injuries. Many damaging aftershocks were recorded for more than a month after the main shock including a triggered earthquake (Mw 5.6) located in the southern district of Van, namely Edremit, on November 9th, 2011 which caused additional damage and casualties. After the Mw 7.2 Van earthquake, earthquake-induced ground deformations such as liquefaction and lateral spreading were extensively observed around the shores of Lake …
Three Dimensional Numerical Analysis For Soft Ground Tunneling, Navid Allahverdi, Verya Nasri
Three Dimensional Numerical Analysis For Soft Ground Tunneling, Navid Allahverdi, Verya Nasri
International Conference on Case Histories in Geotechnical Engineering
This paper presents the methodology and results of comprehensive three-dimensional finite element analyses which were performed to assess the potential impacts of tunneling under an existing subway tunnel as well as potential impact of tunneling under an existing bridge. The finite element models took into account all relevant components of the construction process including the soil behavior, shield tunneling, precast concrete segmental lining and the tail void grouting. The models also accounted for stage construction and detailed shield-driven tunnel boring machine (TBM) processes including applying balancing face pressure as well as injecting bentonite slurry through the TBM shield. This study …
Probabilistic Three-Dimensional Model Of An Offshore Monopile Foundation: Reliability Based Approach, M. J. Vahdatirad, Lars Vabbersgaard Andersen, Lars Bo Ibsen, J. Clausen, J. D. Sørensen
Probabilistic Three-Dimensional Model Of An Offshore Monopile Foundation: Reliability Based Approach, M. J. Vahdatirad, Lars Vabbersgaard Andersen, Lars Bo Ibsen, J. Clausen, J. D. Sørensen
International Conference on Case Histories in Geotechnical Engineering
When wind turbines are to be installed offshore, expensive geotechnical in-situ tests are carried out at the location of each turbine and only a quantile value (typically the 5% quantile) of the measured strength parameters is used as design parameter, e.g., the 5% quantile value of the undrained shear strength of the soil. Typically, measurement, statistical and model uncertainties are not taken into account in code-based, deterministic design. Hence, current methodology based design may be expensive, but the reliability of the foundation is unknown. Instead, a reliability-based design process based on stochastic analysis of the soil parameters is proposed to …
Failure Investigation Of A Helical Anchor Tie-Down System Supporting An Olympic Size Swimming Pool, Tom Labuda, Gene W. Corley, Michael Murphy
Failure Investigation Of A Helical Anchor Tie-Down System Supporting An Olympic Size Swimming Pool, Tom Labuda, Gene W. Corley, Michael Murphy
International Conference on Case Histories in Geotechnical Engineering
Adoption of new technologies and a push for money-saving value engineering designs may produce unpredictable and unwanted results. Particularly with shrinking budgets, proposals that reduce initial costs become more appealing. However, without careful consideration and implementation, cost-reducing measures can become more expensive in the end. This paper presents a case study of geostructural forensic analysis related to the failure of a helical anchor tie-down system selected to support an Olympic size swimming pool against hydrostatic uplift forces. The selection of helical anchors over a more expensive traditional anchorage system appeared to be a smart value engineering decision for the project’s …
Slurry Caisson Problems And Correction In Chicago, Tony A. Kiefer
Slurry Caisson Problems And Correction In Chicago, Tony A. Kiefer
International Conference on Case Histories in Geotechnical Engineering
The paper describes the design and construction history of 67-story and 45-story residential towers in Chicago which were constructed on straight-shaft caissons supported on the surface of dolomite bedrock at a design bearing pressure of 90 tons per square foot (tsf). The use of the 90 tsf bearing pressure was a first in Chicago and a strong departure from the Chicago code method of requiring rock sockets at least one to six feet deep along with permanent steel casing. The caissons were constructed by using polymer drilling slurry and tremie concrete pouring procedures. This paper presents a brief history and …
A Report On The 2012 Seismic Sequence In Emilia (Northern Italy), Diego C. F. Lo Presti, Mauro Sassu, Lucia Luzi, Francesca Pacor, Doriano Castaldini, Giovanni Tosatti, Claudia Meisina, Davide Zizioli, Francesco Zucca, Giuliano Rossi, Gilberto Saccorotti, Davide Piccinini
A Report On The 2012 Seismic Sequence In Emilia (Northern Italy), Diego C. F. Lo Presti, Mauro Sassu, Lucia Luzi, Francesca Pacor, Doriano Castaldini, Giovanni Tosatti, Claudia Meisina, Davide Zizioli, Francesco Zucca, Giuliano Rossi, Gilberto Saccorotti, Davide Piccinini
International Conference on Case Histories in Geotechnical Engineering
Since mid-May 2012, an energetic seismic sequence has affected the northern part of Italy and specifically a wide sector of the Po River Plain. The sequence has been dominated by two main events: a) Mw = 5.9 occurred near Finale Emilia on May 20th at a depth of 6.3 km, and b) Mw=5.8 occurred near Cavezzo on May 29th at a depth of 10.2 km (earthquake location are obtained Istituto Nazionale di Geofisica e Vulcanologia, http://iside.rm.ingv.it/). The effects of the two main shocks can be summarized as follows: - damage to infrastructures (roads, pipelines) essentially because of the occurrence of …
Improving The Structural Performance Of Heritage Buildings. A Comprehensive Romanian Experience., Ion Vlad
Improving The Structural Performance Of Heritage Buildings. A Comprehensive Romanian Experience., Ion Vlad
International Conference on Case Histories in Geotechnical Engineering
The paper is devoted to historical masonry buildings’ protection against the destructive influence of earthquakes. Experimental and analytical investigations were performed to verify an original methodology that was developed for improving the structural performance of such a building. The seismic retrofitting of the cultural heritage requires compliance with the severe restrictions of the Romanian legislation related to the preservation of the original artistic and structural features. The intervention on the building started with the understanding of the original idea that was in the mind of the first designer. To accomplish this desideratum, two studies have been performed: a historical study …
The Design Of Foundations For The World’S Tallest Buildings, Clyde N. Baker, Tony A. Kiefer
The Design Of Foundations For The World’S Tallest Buildings, Clyde N. Baker, Tony A. Kiefer
International Conference on Case Histories in Geotechnical Engineering
The talk presents the essential requirements for the design of foundations for the world’s tallest buildings from a geotechnical perspective, discusses briefly the basic foundation types and several key principles to remember, including the need for close structural engineer and geotechnical engineer cooperation. The special in-situ testing and load testing techniques commonly used are also presented. International case histories where performance has been monitored are used to illustrate some of the basic points as well as to compare prediction with performance. As an additional feature, the experience of gradually increasing allowable bearing pressures in a given geology over a sufficient …
Geotechnical Lessons Learned From Earthquakes, Jonathan D. Bray, J. David Frost, Ellen M. Rathje
Geotechnical Lessons Learned From Earthquakes, Jonathan D. Bray, J. David Frost, Ellen M. Rathje
International Conference on Case Histories in Geotechnical Engineering
Geotechnical earthquake engineering is an experience-driven discipline. Field observations are particularly important because it is difficult to replicate in the laboratory, the characteristics and response of soil deposits built by nature over thousands of years. Further, much of the data generated by a major earthquake is perishable, so it is critical that it is collected soon after the event occurs. Detailed mapping and surveying of damaged and undamaged areas provides the data for the well-documented case histories that drive the development of many of the design procedures used by geotechnical engineers. Thus, documenting the key lessons learned from major earthquake …
Geotechnical Aspects Of Recent Extreme Floods In Pakistan; A Case History, Sarfraz Ali, Fawad Akram, Abdul Qudoos Khan, Misba-Hafsa
Geotechnical Aspects Of Recent Extreme Floods In Pakistan; A Case History, Sarfraz Ali, Fawad Akram, Abdul Qudoos Khan, Misba-Hafsa
International Conference on Case Histories in Geotechnical Engineering
Topographically, Pakistan comprises three major areas; Northern Highland Area, Indus Basin and Baluchistan Plateau. Its elevation varies from Mean sea Level (0 meter) at south to 8619 meters in the North at K-2 Peak. Northern Highland Area, generally sloping southwards includes Himalayan, Karakorum and Hindu-Kush ranges covering approximately an area of 155,831 square kilometers. Indus Basin stretches from foothills of Northern Highland Area to Arabian Sea in south covering approximately an area of 346,259 square kilometers. Baluchistan Plateau in the West and South comprises mountain ranges of Koh-i-Suleman, Kirther, blow-outs of coralline and lacustrine deposits along coastal belt and covers …
Dem Modelling Of Granular Materials During Cyclic Loading, J. S. Vinod, Buddhima Indraratna, T. G. Sitharam
Dem Modelling Of Granular Materials During Cyclic Loading, J. S. Vinod, Buddhima Indraratna, T. G. Sitharam
International Conference on Case Histories in Geotechnical Engineering
This paper summarises the potential of the Discrete Element Method (DEM) to simulate the behaviour of granular materials under cyclic loading conditions. DEM simulations were carried out on two different assemblies of granular particles (e.g. sand and ballast). It is shown that DEM is capable of simulating the cyclic behavior of granular materials (e.g. liquefaction, post liquefaction and cyclic densification of ballast) similar to the laboratory experiments. Moreover, an instrumented track at Bulli, NSW, Australia, was modeled using DEM to examine the lateral movement of granular materials, including the particle breakage during cyclic loading. The results of these simulations captured …
Design And Construction Of Compaction Grouting For Foundation Soil Improvements, King H. Chin, Heidi P. Disla, Bob Cote
Design And Construction Of Compaction Grouting For Foundation Soil Improvements, King H. Chin, Heidi P. Disla, Bob Cote
International Conference on Case Histories in Geotechnical Engineering
This paper presents the design and construction of compaction grouting work completed for a tank replacement project in Portland, Oregon. The project site is located along the west bank of the Willamette River. The subsurface soils at the project site were determined to be highly susceptible to soil liquefaction and lateral spreading under a design earthquake event per the building code. Compaction grouting was designed and constructed to strengthen the foundation soils supporting the new steel tank that is 115 feet in diameter and 40 feet in height. The design of the compaction grouting was completed using the design guidelines …
Evaluation Of Strength Of Clayey Soil By Ucs Test With Addition Of Rice Husk Ash And Lime, Tapash Kumar Roy
Evaluation Of Strength Of Clayey Soil By Ucs Test With Addition Of Rice Husk Ash And Lime, Tapash Kumar Roy
International Conference on Case Histories in Geotechnical Engineering
The present study investigates the benefits of using rice husk ash (RHA) with clayey soil as the subgrade material in flexible pavements with addition of small amount of lime. Four ratios of RHA of 5%, 10%, 15% and 20% mixed with the clayey soil by weight of soil sample. Further for getting the better performance, lime has been added in this study in the varying proportions from 1% to 3% by weight of soil. The compaction characteristics and unconfined compressive strength tests were conducted on these different mixed soils. The test results shows that the rice husk ash can be …