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Slope Stabilization And Performance Monitoring Of I 35 And Sh 183 Slopes Using Recycled Plastic Pins
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Book Synopsis Slope Stabilization and Performance Monitoring of I-35 and SH-183 Slopes Using Recycled Plastic Pins by : Sandip Tamrakar
Download or read book Slope Stabilization and Performance Monitoring of I-35 and SH-183 Slopes Using Recycled Plastic Pins written by Sandip Tamrakar and published by . This book was released on 2016 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States earth retaining structure market exceeds 170 million square feet annually and there are over 50 different retaining systems to select from which are unique in design and construction. Depending on the type of retaining structure, unit costs vary from less than $20 to in excess of $250 per square foot. Selecting the technically appropriate and cost-effective system is often critical to project cost and schedule. The Recycled Plastic Pin (RPP) has potential to be utilized as a sustainable and cost effective option to stabilize the surficial slope failure. RPP have been successfully used in Missouri, Iowa and Texas to repair the surficial slope failure of highway embankment. The current study summarized the remediation of shallow slope failure using RPP at two different slopes at DFW area. Two highway slopes, one located over SH-183 and SH-97 near DFW airport and second one over I-35 overpass at Mockingbird Lane in Dallas, Texas. Both of the slopes were modeled in PLAXIS and based on the numerical modeling, the number of RPP were determined. Sections of slope at each slope were reinforced with RPP and the performance of the slope was monitored using inclinometer and surveying instruments. Based on the design methods, the calculated factors of safeties were in good agreement with the safety analysis results in numerical modeling.
Book Synopsis Long Term Performance Monitoring of Shallow Slope Stabilization Utilizing Recycled Plastic Pins by : Cory Alan Raus
Download or read book Long Term Performance Monitoring of Shallow Slope Stabilization Utilizing Recycled Plastic Pins written by Cory Alan Raus and published by . This book was released on 2019 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shallow slope failures are prevalent within the North Texas region. As highway slopes are underlain with high plastic clayey soils that experience cyclic shrinking and swelling, the soils shear strength generally decreases as the soil softens, making the soil more susceptible to sloughing and landslides. The Texas Department of Transportation (TxDOT) generally executes a rapid repair method as an economical option for repairing the slope. This method includes the failed soil removal, replacement, and recompaction to rectify the slope surface. While economical initially, this rapid repair technique may potentially prove to be costly with repeated repairs as the method does little to increase the soils shear strength. Recycled Plastic Pins (RPP),manufactured with recycled plastic and waste material, can potentially be utilized as a sustainable and cost effective alternative to stabilize surficial slope failures, in addition to alleviating the maintenance costs associated with continual repair. The present study looks at the long-term performance of three slopes stabilized utilizing RPP. The three slopes are located at US-287 near the St. Paul overpass in Midlothian, the I-35 overpass at Mockingbird Lane, and SH-183 near the DFW airport. While previous studies have been conducted on the performance of RPP as a slope stabilization measure, the period of observation is limited. Additionally, both topographic surveys and inclinometer measurements were performed to link both the vertical settlement and horizontal displacement. Based on the performance monitoring results, it was concluded that RPP provided adequate resistance against shallow slope failures. Moreover, near the location of each site during the monitoring period,several shallow slope failures were observed.
Book Synopsis Sustainable Slope Stabilisation using Recycled Plastic Pins by : Sahadat Hossain
Download or read book Sustainable Slope Stabilisation using Recycled Plastic Pins written by Sahadat Hossain and published by CRC Press. This book was released on 2017-06-14 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landslides and slope failure are common in the US and rest of the world. The landslides cause significant damage to infrastructure and millions of dollars are required each year to fix the slope. A sustainable and costeffective option to stabilise the slope can have significant benefits, as it will reduce the cost of maintenance and when using recycled pins, it may help the environment at the same time. The recycled plastic pin is made from recycled plastic bottles and other plastic waste. Several demonstration projects already proved the effectiveness of RPP as an alternative option to fix slope failure, with a maximum failure depth of 7-8 ft. In this book, every detail of the slope stabilisation technique using recycled plastic pins, including the design techniques and several case studies, are included. This will help to explain the basics of this important technique and will be used as reference to design the slope stabilisation scheme using recycled plastic pins.
Book Synopsis Sustainable Slope Stabilization Using Recycled Plastic Pin in Texas by : Mohammad Sadik Khan
Download or read book Sustainable Slope Stabilization Using Recycled Plastic Pin in Texas written by Mohammad Sadik Khan and published by . This book was released on 2014 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shallow slope failures are predominant in the North Texas area and pose significant maintenance problems for the Texas Department of Transportation (TxDOT). As a cost effective alternative, the Recycled Plastic Pin (RPP) can be utilized to stabilize the shallow slope failure. RPP are fabricated from recycled plastics and waste materials (i.e. polymers, sawdust, and fly ash). It is a lightweight material and less susceptible to chemical and biological degradation than alternative reinforcing element. RPPs are driven into the slope face, which provide additional resistance along the slip surface and increase the factor of safety. The current study summarized the remediation of shallow slope failure using RPP. Two highway slopes, one located over US 287 near the St. Paul overpass in Midlothian and one over Loop 12 near the UP RP rail overpass in Dallas, Texas were stabilized using RPP. Three 50 ft. sections were selected and reinforced using RPP after a crack, caused by slope movement, was observed over the shoulder in the US 287 slope. Two 50 ft. control sections were placed between the reinforced sections to compare the performances of the slope. A 50 ft. section over top slope and a 100 ft. section at the bottom slope of Loop 12 were reinforced with RPP as a temporary solution. The field performance of the slope was monitored using instrumented RPPs, inclinometers and surveying instruments. The performance monitoring results of US 287 slope indicated that the unreinforced control sections had significant settlement at the crest of the slope, as much as 15 inches. In addition, a total of 3 inch increments in settlement had taken place during the year. In contrast, almost no increment in settlement was observed at the reinforced section in US 287 slopes. Moreover, the total settlements in the reinforced sections were 2 inch to 4 inch which was less compared to the unreinforced sections. The horizontal displacement of the US 287 slope had taken place after 1 year of construction which ranged up to 1.5 inch. After 1 year, the horizontal displacement became less than 0.1 inch at the Reinforced Section 1. The performance monitoring results of the Loop 12 slope presented that the top of the retaining wall is still moving after the installation of RPP. However, RPP installed adjacent to the footing provided lateral resistance and restricted the sliding of the wall. The maximum resistance was observed with closer RPP spacing. The cost analysis for the US 287 slope indicated that the cost for slope stabilization using RPP can be 50% lower compared to the cost of conventional slope stabilization approaches. The performance of the US 287 slope was further evaluated in numerical study and a parametric study was conducted to evaluate the effect of length and spacing of RPP which indicated that the deformation of reinforced slope increase with wider RPP spacing. Finally, a performance-based design method was developed to design the slope stabilization for surficial failure. The design method considers three limiting criteria which consider restricting failure of soil, limit horizontal displacement of RPP and limit maximum flexure in RPP. Based on the design method, the calculated factors of safeties were in good agreement with the safety analysis results in numerical study.
Book Synopsis Effect of Modified Moisture Barriers on Slopes Stabilized with Recycled Plastic Pins by : Anuja Sapkota
Download or read book Effect of Modified Moisture Barriers on Slopes Stabilized with Recycled Plastic Pins written by Anuja Sapkota and published by . This book was released on 2019 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: High plasticity expansive clayey soils are prone to repeated swelling and shrinkage due to cyclic climatic variations. These variations lead to desiccation cracks that act as pathways for rainfall intrusion into the slope, and lead to increased moisture content. The increase in the moisture content of the soil generates considerable hydrostatic pressure, which can cause pavement distress and shallow slope failure. Previously, failed slopes in North Texas were repaired by the UTA research team using only recycled plastic pins, which increase the stability of the slope but do not improve the performance of the pavement shoulder or limit the intrusion of moisture into the slope. Since these types of distresses and failures are frequently observed in many parts of North Texas, an approach for minimizing the rainfall intrusion into the desiccation cracks and increasing the lateral stability of the slope was developed, combining the use of modified moisture barriers and recycled plastic pins. The developed method was applied to stabilize a failed slope along US Highway 287 located near Midlothian, Texas. The failed highway segment was divided into three test sections: a pin-plus barrier section, pin-only section, and control section. The pin-plus barrier section was stabilized with both a modified moisture barrier and recycled plastic pins, the pin-only section was stabilized using only the recycled plastic pins, and the control section was left unstabilized. The stabilized and unstabilized sections were instrumented with integrated temperature and moisture sensors, rain gauges, and inclinometers to monitor real-time moisture and temperature variations, rainfall events, and lateral deformation of slopes, respectively. A topographic survey was conducted to monitor the vertical settlement and edge drops of stabilized and unstabilized slopes, and resistivity imaging was performed on a monthly basis to monitor the continuous subsurface profile and to determine the depth of active moisture fluctuations. The sections were monitored periodically to evaluate the effectiveness of the proposed stabilization method as compared to other sections. Measuring the volumetric moisture content in the control and pin-only sections revealed an instantaneous response to rainfall events, while measuring the volumetric water content measured in the pin-plus barrier section showed insignificant variations, even with the rainfall events. The maximum moisture variation of the control and pin-only sections was 32.81%, while the maximum moisture variation of the pin-plus barrier was 3.89%. Therefore, it can be concluded that the use of a modified moisture barrier significantly reduced moisture intrusion into the slope. The variations in the moisture content directly reflected the measured lateral movement and vertical settlement of the slopes. Maximum lateral movements of 1.5 inches and 0.8 inches were observed in the control section and pin-only section, respectively, while only 0.38 inches lateral movement was observed in the pin-plus barrier section. The average vertical settlements observed in the control and pin-only sections were 2.65 inches and 1.61 inches, respectively, while only 0.59 inches vertical settlement was observed in the pin-plus barrier section. The performances of the test sections were evaluated using the finite element program PLAXIS 2D, and the results of the finite element model were in good agreement with the field performance results. The numerical study also showed an improvement in the stability of the slope with an increase in the length of the modified moisture barrier along the slope. In summary, the combined use of modified moisture barriers and recycled plastic pins is effective in increasing the stability of highway slopes by limiting the rainfall-induced moisture variations, lateral deformation, and vertical settlement.
Book Synopsis Group Resistance of Recycled Plastic Pin in Sustainable Slope Stabilization by : Mohammad Rezaul Haque Bhuiyan
Download or read book Group Resistance of Recycled Plastic Pin in Sustainable Slope Stabilization written by Mohammad Rezaul Haque Bhuiyan and published by . This book was released on 2014 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slope failure is a common phenomenon in areas with slope constructed on high plasticity clay and shallow slope failure is predominant in North Texas. The cumulative maintenance cost of minor slides is equal or greater than major landslides. But, cost associated with post failure maintenance can be reduced significantly if an appropriate stabilization method is adopted. Thus, selection of appropriate and economically viable slope stabilization method has got great importance for the geotechnical engineers. Recently, a new approach of shallow slope stabilization technique is introduced using Recycled Plastic Pin (RPP). RPP used in shallow slope stabilization should pass beyond the slip surface to pin the sliding surface with the stiff soil. An extensive study based on the field performance of RPP installed for shallow slope stabilization was carried out by Loehr and Boders in Missouri, and Khan in Texas. In most of the cases, the horizontal displacement of RPP reinforced slope was about 3 inches both in Missouri and in Texas. The field investigation of the RPP reinforced slopes leads researchers to develop two new design protocols. They are limit resistance method by Loehr and Boders and performance based method by Khan. The limit resistance design method did not consider the effects of creep of RPP. This limitation was taken into account and a new performance based design method is proposed by Khan. But, instead of considering group resistance of RPP, only resistance of single RPP is considered in performance based method. Thus, the objective of this study is to determine the group resistance of RPP in sustainable slope stabilization. To attain the goal, number of RPP required forming an effective group at different spacing is determined. In order to fulfill the objective, an extensive study has been conducted based on numerical modeling and supported by field data. Thereby, a new design chart is proposed considering group resistance of RPP, where maximum horizontal displacement and flexural stress of RPP are taken into account. Parametric study is carried out to determine the variation of resistance between group of RPP and single RPP at different loading condition, soil strength parameters, spacing and depth of slip surface, where the horizontal displacement of single RPP and group of RPP is determined and plotted graphically. The graphical representation shows the difference of resistance between group of RPP and single RPP with increasing load, soil strength, spacing and depth of slip surface. Thus, the design charts for group of RPP at different spacing are developed considering different types of soil for different slope, where the horizontal displacement and/or flexural stress is shown with increasing applied load. Similar conditions of Interstate 70-Emma Site, as presented in the literature by Loehr and Borders is plotted on developed design chart for 4-ft deep slip surface. The interpolated horizontal displacement according to the developed design chart for RPP at 3-ft spacing is 0.51 and is in good agreement with Interstate 70-Emma Site. Finally, a multiplication factor is introduced to establish a relationship between the developed design charts to performance based method.
Book Synopsis Cost-effective and Sustainable Road Slope Stabilization and Erosion Control by : Laura Fay
Download or read book Cost-effective and Sustainable Road Slope Stabilization and Erosion Control written by Laura Fay and published by Transportation Research Board. This book was released on 2012 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the United States it is estimated that 75 percent of all roads are low volume roads maintained by some 35,000 local agencies. Low volume roads often omit surface slope protection, and this can lead to slope failure, erosion, and maintenance, safety, and ecological issues. This report presents information on cost effective and sustainable road slope stabilization techniques, with a focus on shallow or near surface slope stabilization and related erosion control methods used on low volume roads. To fully address this topic, planning and site investigation are discussed, as well as erosion control techniques, soil bioengineering and biotechnical techniques, mechanical stabilization, and earthwork techniques. Information presented in this report was obtained through an extensive literature review, and from survey and interview responses. From the survey responses, 30 individuals were interviewed based on the information they made available in the survey. A total of 25 interviews were conducted over the phone, and in two cases written responses were received"--Preface.
Book Synopsis Slope Stabilization Using Recycled Plastic Pins by : J. Erik Loehr
Download or read book Slope Stabilization Using Recycled Plastic Pins written by J. Erik Loehr and published by . This book was released on 2000 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Slope Performance Monitoring by : Robert Sharon
Download or read book Guidelines for Slope Performance Monitoring written by Robert Sharon and published by CSIRO PUBLISHING. This book was released on 2020-07-01 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although most mining companies utilise systems for slope monitoring, experience indicates that mining operations continue to be surprised by the occurrence of adverse geotechnical events. A comprehensive and robust performance monitoring system is an essential component of slope management in an open pit mining operation. The development of such a system requires considerable expertise to ensure the monitoring system is effective and reliable. Written by instrumentation experts and geotechnical practitioners, Guidelines for Slope Performance Monitoring is an initiative of the Large Open Pit (LOP) Project and the fifth book in the Guidelines for Open Pit Slope Design series. Its 10 chapters present the process of establishing and operating a slope monitoring system; the fundamentals of pit slope monitoring instrumentation and methods; monitoring system operation; data acquisition, management and analysis; and utilising and communicating monitoring results. The implications of increased automation of mining operations are also discussed, including the future requirements of performance monitoring. Guidelines for Slope Performance Monitoring summarises leading mine industry practice in monitoring system design, implementation, system management, data management and reporting, and provides guidance for engineers, geologists, technicians and others responsible for geotechnical risk management.
Book Synopsis Slope Stabilization and Erosion Control: A Bioengineering Approach by : Roy P.C. Morgan
Download or read book Slope Stabilization and Erosion Control: A Bioengineering Approach written by Roy P.C. Morgan and published by Taylor & Francis. This book was released on 2003-09-02 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date review of research and practice on the use of vegetation for slope stabilization and control of surface erosion caused by water and wind. From a basic understanding of the principles and practices of vegetation growth and establishment, it describes how vegetation can be treated as an engineering material and used to solve erosion and slope stability problems.
Book Synopsis Slope Stability and Erosion Control: Ecotechnological Solutions by : Joanne E. Norris
Download or read book Slope Stability and Erosion Control: Ecotechnological Solutions written by Joanne E. Norris and published by Springer Science & Business Media. This book was released on 2008-02-29 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to assist in choosing ecotechnological solutions for slopes that are prone to a variety of mass movements e.g. shallow failure or erosion. The book reviews the types of problematic slopes that may occur and describes briefly the nature of mass movements and the causes of these movements. There is focus on the use of vegetation to stabilize soil on slopes prone to mass movements. The book also introduces new ecotechnological methods, and case studies are discussed.
Book Synopsis Engineering Characteristics of Recyled Plastic Pin, Lumber and Bamboo for Soil Slope Stabilization by : Faisal Shakib Ahmed
Download or read book Engineering Characteristics of Recyled Plastic Pin, Lumber and Bamboo for Soil Slope Stabilization written by Faisal Shakib Ahmed and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Shallow slope failures are predominant in North Texas and pose a significant maintenance problem. The traditional slope repair and stabilization techniques become expensive in some instances with direct costs associated in maintenance and repair of landslides. A new approach for slope stabilization has been developed using Recycled Plastic Pins (RPP) to stop slope movements. The engineering properties of RPP in compression and bending strength along with environmental considerations dictate the design and repair of slopes using RPP. Two other materials have also been considered as an alternative: (1) Wood lumber and (2) Bamboo. Wood has many advantages as an engineering material. It is strong, light, and fairly simple to work with. Bamboo is typically thought of for decoration is recently becoming more popular as a structural element. Bamboo is one of the fastest growing plant in the world and readily available in developing countries like: South Asia. However, to administer their application in slope stabilization, it is necessary to have a clear understanding of their structural behavior under in situ conditions. The current study focuses on determining engineering properties of Recycled Plastic Pins (RPPs), wood lumber and bamboo and their applicability in soil slope stabilization. The RPPs, manufactured by Bedford Technology Ltd., was collected from Minnesota, the bamboo samples were collected from Benson Tropical Sea Imports and the wood lumber was collected from local stores . An extensive experimental program was developed to determine the engineering characteristics of these materials. The tests that were performed were the flexure test and the uniaxial compression as they govern to match the field load orientation. Three different strain rates were applied during the test were based on the ASTM standards and field conditions. For each strain rate, three samples from each of the respective specimen were taken. Three different environmental conditions, to match the Texas soil, were considered for the current study, 1) Acidic condition of a pH of 5.5 representing Texas red clay 2) Alkaline condition of a pH of 8.5 representating Texas black clay 3) Neutral condition of a pH of 7.0 simulating rainwater and moist conditions in field. The test results showed that wood possess highest peak strength, both in flexure and compression, but RPPs extended to accommodate more soil movments, which was upto 19% in compression at the lowest strain rate. However, the strength of wood and bamboo were decreased by 50% for wood and 65% for bamboo under different environmental conditions where the strength reduction for RPPs was only 8%. The results, both the flexure and the axial compressive tests in environement and non-environment conditions, reflect that RPPs could be utilized over wood and bamboo to stabilize slope failures in field conditions. However, for the solid condition with a pH of 7.0, all three materials can be used for slope stabilization.
Book Synopsis Slope Stabilization Using Recycled Plastic Pins by : J. Erik Loehr
Download or read book Slope Stabilization Using Recycled Plastic Pins written by J. Erik Loehr and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Slope Stabilization Using Recycled Plastic Pins by : J. Erik Loehr
Download or read book Slope Stabilization Using Recycled Plastic Pins written by J. Erik Loehr and published by . This book was released on 2007 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Slope Stabilisation by : J. A. R. Ortigao
Download or read book Handbook of Slope Stabilisation written by J. A. R. Ortigao and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is aimed at the practising engineer and engineering geologist working in tropical environments, where lands lides are mainly triggered by rain fall. This book is based on a similar work published in 1999 in Portuguese, which became the Rio de Janeiro Slope Manual. This book is an engineering guide for the design of slopes and stabilisation works in rocks and residual soils. It evolves from the cumulative experience gathered by several engineers and geologists who faced severe slope problems. The authors' experience throughout Central and South America (Costa Rica, Argentina, Bolivia, Peru, Ecuador and Venezuela) and the Far East, especially Hong Kong and Malaysia, was used as a foundation for writing this book. The work also benefits enormously from the time spent in Hong Kong in 1996 and 1997 by the first editor on sabbatical at the City University of Hong Kong, and the discussions he had with many colleagues from the Geotechnical Engineering Office (GEO) of the Hong Kong Government, especially Dr. A. Malone, Mr. w.K. Pun, Dr. A. Li, Mr. K. Ho, and Mr. y.c. Chan among others.
Book Synopsis Stability Analysis of Slopes Reinforced with Recycled Plastic Pins by : Willy Liew
Download or read book Stability Analysis of Slopes Reinforced with Recycled Plastic Pins written by Willy Liew and published by . This book was released on 2000 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Slope Stability Analysis by : J. Paul Guyer
Download or read book An Introduction to Slope Stability Analysis written by J. Paul Guyer and published by Createspace Independent Pub. This book was released on 2013-06-05 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is concerned with characteristics and critical aspects of the stability of excavation slopes; methods of designing slopes, including field observations and experience, slope stability charts, and detailed analyses; factors of safety; and methods of stabilizing slopes and slides. Excavation slope instability may result from failure to control seepage forces in and at the toe of the slope, too steep slopes for the shear strength of the material being excavated, and insufficient shear strength of subgrade soils. Slope instability may occur suddenly, as the slope is being excavated, or after the slope has been standing for some time. Slope stability analyses are useful in sands, silts, and normally consolidated and overconsolidated clays, but care must be taken to select the correct strength parameter. Failure surfaces are shallow in cohesionless materials and have an approximately circular or sliding wedge shape in clays. The emphasis in this publication is on simple, routine procedures. It does not deal with specialized problems, such as the stability of excavated slopes during earthquakes.
