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Strength And Stiffness Characteristics Of Lime Stabilized Soil In A Flexible Pavement Design
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Book Synopsis Strength and Stiffness Characteristics of Lime Stabilized Soil in a Flexible Pavement Design by : Andrew James Domke
Download or read book Strength and Stiffness Characteristics of Lime Stabilized Soil in a Flexible Pavement Design written by Andrew James Domke and published by . This book was released on 2014 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lime treatment has proven to be a useful tool for stabilizing expansive soils. Expansive soils cause major damage to flexible and rigid pavements every year, since seasonal changes in soil moisture creates cyclical changes in the forces acting on a pavement. The use of lime to stabilize soil can reduce the soil's swell potential and add strength and stiffness to a pavement's subgrade. Due to the improved physical properties, lime stabilized soil (LSS) can be considered as part of the structural pavement layers. Utilizing LSS as a subbase in the pavement structure can reduce the thickness of the more expensive pavement layers. In the North Tarrant Expressway (NTE) Segment 1 project, the results of the geotechnical investigation and quality assurance (QA) programs were used to verify the increase in strength and stiffness of the LSS with time. Unconfined compression strength (UCS) and resilient modulus tests were used, during the design phase, to determine if the reactions between the soil and lime would increase the strength and stiffness of the soil. Eight groups of soils from the NTE Segment 1 project were treated with lime and tested in the lab to confirm a 25,000 psi design assumption for the LSS layer resilient modulus. During construction, as part of the QA program, UCS and Falling Weight Deflectometer (FWD) tests were conducted to further confirm the design assumption. The design, quality control, and QA processes along with testing results are reviewed and summarized in this thesis to demonstrate that LSS can be considered a pavement subbase, if the proper precautions are taken.
Book Synopsis Soil Stabilization in Pavement Structures: Pavement design and construction considerations by : Terrel, Epps, and Associates
Download or read book Soil Stabilization in Pavement Structures: Pavement design and construction considerations written by Terrel, Epps, and Associates and published by . This book was released on 1980 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lime Stabilization written by and published by Transportation Research Board National Research. This book was released on 1987 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years, various forms of lime, including products with varying degrees of purity, have been utilized successfully as soil stablizing agents. The state of the art in lime treatment based on a comprehensive analysis of current practice and technical literature is presented in this report. References are included for more information.
Book Synopsis Handbook for Stabilization of Pavement Subgrades and Base Courses with Lime by : Dallas N. Little
Download or read book Handbook for Stabilization of Pavement Subgrades and Base Courses with Lime written by Dallas N. Little and published by . This book was released on 1995 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Stabilization in Pavement Structures: Mixture design considerations by : Terrel, Epps, and Associates
Download or read book Soil Stabilization in Pavement Structures: Mixture design considerations written by Terrel, Epps, and Associates and published by . This book was released on 1979 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Coefficients for Lime-soil Mixtures by : Illinois. Division of Highways
Download or read book Design Coefficients for Lime-soil Mixtures written by Illinois. Division of Highways and published by . This book was released on 1970 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Property Relationships of Cement Or Lime Stabilized Soils Throughout a Pavement's Life by : Leigh E.W. Ayers
Download or read book Mechanical Property Relationships of Cement Or Lime Stabilized Soils Throughout a Pavement's Life written by Leigh E.W. Ayers and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil-cement is an integral part of pavement design, especially in areas that are aggregate deprived, such as Mississippi. Current designs are reliant on the relationship of unconfined compressive strength (UCS) to other mechanical properties. The other properties discussed in this dissertation are Modulus of Elasticity (E), Indirect Tensile Strength (St), and Modulus of Rupture (MOR). This dissertation includes a comprehensive review of past design methods and mechanical property relationships. While some mechanical property relationships were shown to be well understood (i.e. St to UCS), others were not as accurate, especially for the later life mechanical properties (i.e. MOR to UCS and E to UCS). This dissertation investigates the Plastic Mold (PM) Compaction (PM) Device and its ability to measure mechanical property relationships (UCS, E, St) for soil-cement as well as different materials, such as lime stabilized subgrade and Cold in Place Recycling (CIR) stabilized with cement. These mechanical property relationships were compared to soil-cement beam specimens, which are capable of being tested for the four previously mentioned mechanical properties from an individual specimen. Finally to have a better understanding of the later life mechanical properties and their relationships, PM and beam specimens were exposed to elevated temperatures to forecast out how these properties interrelate over time. These mechanical property values and relationship were then compared to Mississippi field cores ranging from 10 to 54 years old. These protocols, beam and elevated curing, were able to replicate what was seen for pavement cores that were extracted after decades of service. Over 1300 specimens were testing showing how these mechanical properties interacted from early ages and throughout a pavement’s life.
Book Synopsis Proceedings of the Indian Geotechnical Conference 2019 by : Satyajit Patel
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 2021-05-05 with total page 929 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.
Book Synopsis Soil Stabilization in Pavement Structures by : Terrel, Epps, and Associates
Download or read book Soil Stabilization in Pavement Structures written by Terrel, Epps, and Associates and published by . This book was released on 1980 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Pavement Design by : E. J. Yoder
Download or read book Principles of Pavement Design written by E. J. Yoder and published by John Wiley & Sons. This book was released on 1991-01-08 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a complete coverage of all aspects of the theory and practice of pavement design including the latest concepts.
Book Synopsis Flexible Pavement Design for Airfields (elastic Layered Method). by :
Download or read book Flexible Pavement Design for Airfields (elastic Layered Method). written by and published by . This book was released on 1989 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shear Strength and Elastic Properties of Lime-soil Mixtures by : Marshall R. Thompson
Download or read book Shear Strength and Elastic Properties of Lime-soil Mixtures written by Marshall R. Thompson and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Low-quality Recycled Concrete Pavement Aggregates for Subgrade Soil Stabilization by : Masoumeh Tavakol
Download or read book Evaluation of Low-quality Recycled Concrete Pavement Aggregates for Subgrade Soil Stabilization written by Masoumeh Tavakol and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recycled concrete aggregate (RCA) is the byproduct of the demolition of concrete structures and pavements. An estimated 140 million tons of concrete waste is produced annually in the United States, most of which ends up in landfills. The use of RCA to replace quarried aggregates in paving projects is one way to utilize these materials and alleviate concerns regarding this increasing waste stream. RCA usage prevents waste concrete disposal into landfills, resulting in more sustainable use of mineral aggregate sources, and may further reduce costs associated with paving projects. However, the inferior physical properties of RCA, such as the presence of recycled mortar, complicate the incorporation of RCA into new concrete mixtures. State highway agencies such as the Kansas Department of Transportation are facing further issues with RCA from D-cracked pavements, raising the question if D-cracked aggregates should be used in paving operations. No known work has evaluated the effect of RCA from D-cracked pavements in subgrade soil stabilization. This study stabilized a low-plasticity clay in Kansas using RCA and three stabilizing materials (lime, Class C fly ash, and a combination of Portland cement and fly ash). Candidate mixtures with varying proportions of chemical stabilizers and D-cracked aggregates were evaluated using the standard Proctor, unconfined compressive strength, linear shrinkage, and California Bearing Ratio tests. Microstructure characteristics of selected mixtures were explored using scanning electron microscopy (SEM) and energy dispersive X-ray tests. Laboratory test results indicated that RCA, in conjunction with all cementitious materials except lime, improved clay strength, stiffness, and shrinkage properties. SEM results indicated that RCA caused a low void space and a dense arrangement of soil particles. RCA effectively improved evaluated mixture properties when an adequate soil-RCA bond was reached using chemical agents. The long-term performance of full-depth flexible pavements with stabilized mixtures as subgrade was assessed in the AASHTOWare Pavement ME Design (commonly known as MEPDG) software. The life-cycle cost of flexible pavements with stabilized mixtures was estimated for a 40-year design period. Economic analysis results indicated that RCA was cost effective only if it was used with a combination of fly ash and Portland cement.
Book Synopsis Geotechnical and Geophysical Site Characterization 4 by : Roberto Quental Coutinho
Download or read book Geotechnical and Geophysical Site Characterization 4 written by Roberto Quental Coutinho and published by CRC Press. This book was released on 2012-09-06 with total page 1888 pages. Available in PDF, EPUB and Kindle. Book excerpt: Site characterization is a fundamental step towards the proper design, construction and long term performance of all types of geotechnical projects, ranging from foundation, excavation, earth dams, embankments, seismic hazards, environmental issues, tunnels, near and offshore structures. Geotechnical and Geophysical Site Characterization 4 provides practical applications of novel and innovative technologies in geotechnical and geophysical engineering, and is of interest to academics, engineers and professionals involved in Geotechnical Engineering.
Book Synopsis Lime Stabilization, Properties, Mix Design, Construction Practices and Performance, 1961 by : National Research Council (U.S.). Highway Research Board
Download or read book Lime Stabilization, Properties, Mix Design, Construction Practices and Performance, 1961 written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1961 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lime Stabilization, Mix Design, Properties and Process, 1962 by : National Research Council (U.S.). Highway Research Board
Download or read book Lime Stabilization, Mix Design, Properties and Process, 1962 written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1962 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper 1 reports on the fatigue behavior of a lime-fly ash-aggregate mixture. Specimens, 6- by 6- by 38-in., were tested after a 28-day curing period by subjecting them to constant, repeated flexural loads. Paper 2 considers the selection of 20 representative Iowa soils and the results of laboratory tests to determine the effects of a dolomitic monohydrate lime on the plastic limit and unconfined compressive strength of these soils. Paper 3: Subgrade soils on three projects in Virginia were stabilized with hydrated lime. They were sampled during 1960 for the purpose of studying the effects of addition of hydrated lime. Paper 4: The main objects of the investigations were to find a possible best ratio of lime to fly ash and the optimum amount of the lime and fly ash admixture for stabilizing various textured soils, to determine the effects of lime content and curing period on the strength of soil and lime mixtures, and to compare the strengths of soils treated with lime, lime and fly ash, or cement.
Book Synopsis The Influence of Temperature on North Carolina Lime-stabilized Soil Subgrades by : Immanuel Kyle Baucom
Download or read book The Influence of Temperature on North Carolina Lime-stabilized Soil Subgrades written by Immanuel Kyle Baucom and published by . This book was released on 2008 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lime stabilization is one of the most practical and cost effective techniques of subgrade stabilization in pavement design. However, an undesirable characteristic is the presumed inability of lime-stabilized soils to achieve necessary strengths at colder temperatures, possibly resulting in premature pavement failures. The goal of this research was to more clearly define this relationship between soil-lime reactions and temperature through pH, conductivity, and unconfined compression testing. Significant conclusions from this research include that the minimum lime content of a soil increases as temperature decreases. Increased curing duration leads decreases in pore fluid pH. However, this reduction in pH is less at lower temperatures, indicating that little reactivity occurs below 50[degrees]F. Short-term curing durations show no significant gain in unconfined compression strength, while long-term curing durations lead to significant strength gains, which suggests that pozzolanic reaction does not begin to take place until after 7 days of curing. Long-term curing durations also show the trend of increasing unconfined compressive strength with increasing temperature. However, lower temperatures resulted in less strength gain. For example, 7-day sample strengths at 35[degrees]F increased by only 10% with a 56-day cure, while those samples cured at 70[degrees]F nearly doubled when curing duration was increased from 7 to 56 days. Exposure to freeze-thaw cycles or initial curing at 35[degrees]F resulted in significant reductions in strength gain for a given curing duration. However, once the freeze-thaw cycles or temperature reduction was removed, strength gain resumed at approximately the same rate. Overall, these results suggest that current specifications may be modified to allow lime stabilization to proceed in cooler temperatures, provided a corresponding increase in curing time and/or thermal protection is provided prior to loading.
