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.

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.

Download or read book Engineering Properties of Recycled Plastic Pins for Use in Slope Stablization written by Cheng-Wei Chen and published by . This book was released on 2003 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Driveability of Recycled Plastic Pin RPP in North Texas written by Arif Mohammad Aziz and published by . This book was released on 2020 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Recycled Plastic Pins (RPP) have been extensively used as an alternative to the conventional slope stabilization methods in stabilizing shallows slope failure in Texas, Missouri, Kansas, and Idaho in the United States. The RPP provides additional resistance along the potential slip surface when it is driven into the slope and increases the factor of safety. RPPs are fabricated from recycled plastics and waste materials (i.e. polymers, sawdust, and fly ash), and is nondegradable in nature. It is found to be very useful and beneficial engineering materials for civil engineering infrastructure projects. The cost-effectiveness of using any engineering material largely depends on the efficacy of the project planning where proper scheduling based on the estimation of time is a prime aspect. Although several studies have been conducted to estimate the driving rate of piles using wave equation analysis, static resistance to driving, and dynamic soil properties, no study has been performed to estimate the driving rate of RPPs based on different soil properties. Also the comprehensive understanding of the interaction between RPP and soil properties while driving would assist in bringing about an optimized design method for slope stabilization. Hence, a better understanding of the interconnection between the RPP driving rate and soil properties is an essence. Therefore, the objective of this study is to evaluate the driving rate of RPP based on different soil parameters. The influences of soil properties on RPP driving rate were studied in detailed manner in the present research. The considered soil properties were natural moisture content, dry density, plasticity index, and cohesion. Also the influence of standard penetration test (SPT) value of soil on driving rate of RPP was examined. The driving time and rate along with soil properties utilized in this study were assembled from the studies conducted by Khan (2013), Tamrakar (2015), Zaman (2019), and Sapkota (2019). The data were also collected directly from different sites in Irving and Arlington where RPPs were used for different engineering applications. Based on the analyses, it was found that the driving rate increased with an increase in natural moisture content and plasticity index while it decreased with the increase in dry density, cohesion, and SPT value of soil.

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:

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 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

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.

Download or read book Investigation of Vertical Members to Resist Surficial Slope Instabilities written by Hani Hasan Titi and published by . This book was released on 2007 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the state of the art of using reinforcing structural members to stabilize surficial slope failures. The research team identified the following three innovative methods of surficial slope stability: installing small size structural members by conventional methods; installing launched soil nails, and installing earth anchors. This report includes detailed information regarding the design and analysis methodology for structural members, the material properties of structural members used, construction methods, cost-effectiveness, and case histories.

Download or read book Soil Testing Soil Stability and Ground Improvement written by Wissem Frikha and published by Springer. This book was released on 2017-07-11 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthwork projects are critical components in civil construction and often require detailed management techniques and unique solution methods to address failures. Being earth bound, earthwork is influenced by geomaterial properties at the onset of a project. Hence, an understanding of the in-situ soil properties is essential. Slope stability is a common problem facing earthwork construction, such as excavations and shored structures. Analytical methods for slope stability remain critical for researchers due to the mechanical complexity of the system. Striving for better earthwork project managements, the geotechnical engineering community continues to find improved testing techniques for determining sensitive properties of soil and rock, including stress-wave based, non-destructive testing methods. To minimize failure during earthwork construction, past case studies and data may reveal useful lessons and information to improve project management and minimize economic losses. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.

Download or read book Proceedings of the Indian Geotechnical Conference 2022 Volume 4 written by Babu T. Jose and published by Springer Nature. This book was released on 2024 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zusammenfassung: This book comprises the select proceedings of the Indian Geotechnical Conference (IGC) 2022. The contents focus on recent developments in geotechnical engineering for a sustainable world. The book covers behavior of soils and soil-structure interaction, soil stabilization, ground improvement, and land reclamation, shallow and deep foundations, geotechnical, geological and geophysical investigation, rock engineering, tunneling and underground structures, slope stability, landslides and liquefaction, earth retaining structures and deep excavations, geosynthetics engineering, geo-environmental engineering, sustainable geotechnics, and landfill design, geo-hydrology, dam and embankment engineering, earthquake geotechnical engineering, transportation geotechnics, forensic geotechnical engineering and retrofitting of geotechnical structures, offshore geotechnics, marine geology and sub-sea site investigation, computational, analytical and numerical modeling, and reliability in geotechnical engineering. The contents of this book are useful to researchers and professionals alike

Download or read book Recycled and Secondary Materials Soil Remediation and in Situ Testing written by and published by . This book was released on 2000 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Indian Geotechnical Conference 2019 written by Satyajit Patel and published by Springer Nature. This book was released on 2021-04-24 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the annual conference of the Indian Geotechnical Society. The conference brings together research and case histories on various aspects of geotechnical and geoenvironmental engineering. The book presents papers on geotechnical applications and case histories, covering topics such as (i) Characterization of Geomaterials and Physical Modelling; (ii) Foundations and Deep Excavations; (iii) Soil Stabilization and Ground Improvement; (iv) Geoenvironmental Engineering and Waste Material Utilization; (v) Soil Dynamics and Earthquake Geotechnical Engineering; (vi) Earth Retaining Structures, Dams and Embankments; (vii) Slope Stability and Landslides; (viii) Transportation Geotechnics; (ix) Geosynthetics Applications; (x) Computational, Analytical and Numerical Modelling; (xi) Rock Engineering, Tunnelling and Underground Constructions; (xii) Forensic Geotechnical Engineering and Case Studies; and (xiii) Others Topics: Behaviour of Unsaturated Soils, Offshore and Marine Geotechnics, Remote Sensing and GIS, Field Investigations, Instrumentation and Monitoring, Retrofitting of Geotechnical Structures, Reliability in Geotechnical Engineering, Geotechnical Education, Codes and Standards, and other relevant topics. The contents of this book are of interest to researchers and practicing engineers alike.

Download or read book Transportation Research Record written by and published by . This book was released on 1993 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Site Investigation using Resistivity Imaging written by Sahadat Hossain and published by CRC Press. This book was released on 2018-08-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsurface investigation is the most important phase of any civil engineering construction or development activities. The geologic conditions can be extremely complex, variable, and subject to change with time; soil test borings and in-situ tests are employed to obtain subsoil information. Resistivity Imaging (RI) is a non-destructive, fast and cost-effective method of site investigation and soil characterization. Site Investigation using Resistivity Imaging aims to summarize pertinent details of RI in site investigation for geotechnical and geo-environmental applications. It aims to bridge the gap that currently exists between the geotechnical/geo-environmental and geophysical engineering community. The geotechnical and geo-environmental engineers will be able to use annd understand geophysical data and utilize the information for their design. Features: First comprehensive handbook aimed at engineers that summarises pertinent details of Resitivity Imaging (RI) in site investigation for geotechnical and geo-environmental applications. for geotechnical and geoenvironmental engineers, making it possible to interpret geophysical data and utilize the information for their design. explanining the advantages of RI over conventional site investigations: continuous image, large coverage, low cost, quick and easy data processing. It will be a comprehensive handbook for the application of RI in geotechnical and geo-environmental site investigations.

Download or read book 5th International Conference on Geotechnical and Highway Engineering written by S. P. R. Wardani and published by World Scientific. This book was released on 2011 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains 89 papers from 25 countries and regions, including 14 keynote lectures and 17 invited lectures, presented at the Third International Conference on Geotechnical Engineering for Disaster Mitigation and Rehabilitation (3ICGEDMAR 2011) together with the Fifth International Conference on Geotechnical & Highway Engineering (5ICGHE), which was held in Semarang, Indonesia, from 18 to 20 May 2011. This is the third conference in the GEDMAR conference series. The first was held in Singapore from 12 to 13 December 2005 and the second in Nanjing, China, from 30 May to 2 June 2008. The proceedings is divided into three sections: keynote papers, invited papers and conference papers under which there are six sub-sections: Case Studies on Recent Disasters; Soil Behaviours and Mechanisms for Hazard Analysis; Disaster Mitigation and Rehabilitation Techniques; Risk Analysis and Geohazard Assessment; Innovation Foundations for Rail, Highway, and Embankments; and Slope Failures and Remedial Measures. The conference is held under the auspices of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE) Technical Committee TC-303: Coastal and River Disaster Mitigation and Rehabilitation, TC-203: Earthquake Geotechnical Engineering and Associated Problems, TC-302: Forensic Geotechnical Engineering, TC-304: Engineering Practice of Risk Assessment and Management, TC-213: Geotechnics of Soil Erosion, TC-202: Transportation Geotechnics, TC-211: Ground Improvement, Southeast Asian Geotechnical Society (SEAGS), Association of Geotechnical Societies in Southeast Asia (AGSSEA), and Road Engineering Association of Asia & Australasia (REAAA).