Resilient Moduli of Soils: Laboratory Conditions

Proceedings (Geotechnical special publication) by David J. Elton

Publisher: Amer Society of Civil Engineers

Written in English
Published: Pages: 77 Downloads: 363
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  • Soil & rock mechanics,
  • Soil Mechanics,
  • Science/Mathematics,
  • Congresses,
  • Soils,
  • Testing

Edition Notes

ContributionsRichard P. Ray (Editor)
The Physical Object
Number of Pages77
ID Numbers
Open LibraryOL8375646M
ISBN 100872627349
ISBN 109780872627345

Full text of "DTIC ADA Literature Review - Elastic Constants for Airport Pavement Materials." See other formats.   Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions contains invited, keynote and theme lectures and regular papers presented at the 7 th International Conference on Earthquake Geotechnical Engineering (Rome, Italy, June The contributions deal with recent developments and advancements Author: Francesco Silvestri, Nicola Moraci. Full text of "Subgrade Resilient Modulus for Pavement Design and Evaluation: Final Report" See other formats. Recycled concrete aggregate (RCA) is a relatively new construction material, whose applications can replace natural aggregates. To do so, extensive studies on its mechanical behavior and deformation characteristics are still necessary. RCA is currently used as a subbase material in the construction of roads, which are subject to high settlements due to traffic by: 8.

The book contains 18 chapters that cover: Soils for roadworks Aggregates for unbound, hydraulically bound materials, and bituminous mixtures Elastic modulus and resilient modulus of soils Compaction of soil materials on site Density tests in situ References and director of the Highway Engineering Laboratory in the Department of Civil. Book Description. An International Textbook, from A to Z. Highway Engineering: Pavements, Materials and Control of Quality covers the basic principles of pavement management, highlights recent advancements, and details the latest industry standards and techniques in the global market. Utilizing the author’s more than 30 years of teaching, researching, and consulting .   Resilient Modulus: Resilient modulus is the measure of its elastic behavior determined from recoverable deformation in the laboratory tests. The modulus is an important parameter for design and the performance of a pavement. The relation between resilient modulus and the effective CBR is given as: The CBR of the sub-grade should be determined. “Resilient Moduli of Aggregate Materials: Variability due to Gradation and Moisture Content.” Presentation at the Structures-Geotech Seminar, School of CEES, October 9, “Soft Sediment Mechanics: Sanding–Project Overview and Research Plan.”.

Laboratory Investigation of Seasonal Variations in Resilient Modulus of Alaskan Base Course Material; Particle Shape, Type and Amount of Fines, and Moisture Affecting Resilient Modulus Behavior of Unbound Aggregates; Assessing the Polishing Characteristics of Coarse Aggregates Using Micro-Deval and Imaging System. Resilient Moduli Behavior of Lime-Cement Treated Subgrade Soils Evaluation of the MEPDG Permanent Deformation Models in Louisiana Conditions Effects of Subgrade Resilient Modulus and Climate Inputs on MEPDG.   Bearing Capacity of Roads, Railways and Airfields focuses on issues pertaining to the bearing capacity of highway and airfield pavements and railroad track structures and provided a forum to promote efficient design, construction and maintenance of Book Edition: 1st Edition.

Resilient Moduli of Soils: Laboratory Conditions by David J. Elton Download PDF EPUB FB2

Get this from a library. Resilient moduli of soils: laboratory conditions: proceedings of a session sponsored by the Geotechnical Engineering Division of the American Society of Civil Engineers in conjunction with the ASCE Convention in New Orleans, Louisiana Octo [David J Elton; Richard P Ray; American Society of Civil Engineers.

Resilient modulus is the most critical variable to mechanistic design approaches for asphalt structures. It is the measure of asphalt response regarding dynamic stresses and corresponding strains. The main purpose of the resilient modulus test result analyses was to determine if the addition of nanoparticles brought any significant change in the stiffness properties of modified.

Also, He average variation in resilient modulus likely to Resilient Moduli of Soils: Laboratory Conditions book, under favorable laboratory testing conditions, is about 10 to 15% for within laboratory tests. Considering the large variation in resilient moduli due to the environmental moisture cycle as well as the above variations, He use in design of empirical resilient modulus relationships.

Unfortunately, this book can't be printed from the OpenBook. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines. Field and laboratory testing programs were conducted to develop models that predict the resilient modulus of subgrade soils from the test results of DCP, CIMCPT, FWD, Dynaflect, and.

The engineering properties of the coarse-grained Nigerian subgrade soils materials were obtained in the laboratory. Seven selected resilient modulus constitutive equation for estimating the resilient modulus of coarse-grained subgrade soils were used to estimate the default values using the repeated load triaxial test result conducted on coarse Author: Abdulfatai Adinoyi Murana.

A new laboratory testing procedure and system was used to test reconstituted soil specimens under monitored ranges of temperatures, moisture contents, dry densities, and stress conditions.

These laboratory data allowed the development of multiple regression equations to determine resilient moduli under Rhode Island environmental conditions. In order to develop an intrinsic pavement design guide based on Korean pavement conditions, the characteristics of resilient moduli of subgrade.

The average ratio of the laboratory-determined to the backcalculated resilient moduli was found to be Backcalculated resilient moduli using the AASHTO algorithm and a nonlinear elastic analysis program were nearly identical for the soils that had slightly nonlinear characteristics.

Results from either approaches can be used in design. Abstract. Resilient modulus, 𝑀 𝑅, is an important parameter for designing r, its determination by resorting to cyclic triaxial tests is tedious and time consuming. Moreover, empirical relationships, correlating 𝑀 𝑅 to various other material properties (namely, California Bearing Ratio, CBR; Limerock Bearing Ratio, LBR; R-value and the Soil Support Value, SSV), Cited by: 5.

The resilient modulus (M R) is a key parameter required in the mechanistic-empirical methods, which are widely used for the rational design of pavement r, experimental determination of the M R is expensive and time-consuming since it requires elaborate equipment for testing and trained personnel.

Due to this reason, several researchers have proposed Cited by: 4. The values of E BS from the base layers in the original AASHO Road Test are summarized in Table Note that the E BS values are not only functions of moisture, but also of stress state θ, which in turn is a function of the pavement structure - i.e., subgrade modulus and thickness of the surface l values of θ recommended in the AASHTO Guide for use in.

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1 Paving materials and pavement analysis: proceedings of the GeoShanghai International Conference, June 3. Relatively strong correlations were observed between the in-situ and laboratory moduli at similar moisture contents. For geomaterials placed at dry side of optimum moisture content, the laboratory moduli were greater than the field moduli.

In contrast, laboratory moduli were less than field moduli on the wet-side of optimum moisture content. Comparative evaluation of subgrade resilient modulus from non-destructive, in-situ, and laboratory methods.

Baton Rouge, LA: Louisiana Transportation Research Center, [] (OCoLC) This book is a valuable resource for highway engineers, geotechnical engineers, laboratory personnel who conduct pavement tests, pavement designers, and foundation engineers.

Table of Contents Use of Resilient Modulus Test Results in Flexible Pavement Design. The ratio of internal to external resilient moduli ranged from to for A-3 soils, whereas the ratio ranged from to for A soils.

The ratio of internal to external SRM for the recycled materials blended with fly ash was significantly higher than ratios for materials without fly ash (ranging from to ) (Table 6). Soils and rock instrumentation, behavior, and modeling: selected papers from the GeoHunan International Conference, August, Changsha, Hunan, China Louis Ge, Boming Tang, We Hong Wei, Renpeng Chen.

The papers in this Geotechnical Special Publication were presented at the GeoHunan International Conference: Challenges and Recent. Environmental conditions such as temperature and moisture can significantly influence the performance of a pavement structure.

These conditions vary within the pavement layers, degrading or enhancing the properties of pavement materials. The AASHTO design guide accounts for this influence by incorporating a single resilient modulus (MR) value that Cited by: Resilient Moduli of a Naturally Aged RAP and Aggregate Blend Evaluation of Geosynthetics in Unpaved Roads Built over Natural Soft Subgrade Using Full-Scale Accelerated Pavement Testing Beyond Code-Based Design: Use of Advanced Numerical Modeling to Support Design of Los Angeles's Headworks Reservoir.

ment can also be used to evaluate resilient moduli of subgrade and subbase materials. soils. Evaluation of resilient modulus of compacted sub grades is presented in Chapter 9.

duce, in laboratory specimens, the conditions caus­ File Size: 6MB. Zaman, M., et al.: Resilient moduli of raw and stabilized aggregate bases and evaluation of layer coefficients for AASHTO flexible pavement design, Volume IV, Final Report, Item ; ORAOklahoma Department of Transportation, Oklahoma City, Oklahoma () Google ScholarAuthor: Aneke Frank Ikechukwu, Mostafa M.

Hassan, A. Moubarak. This study determined the hydraulic conductivities, effective porosities and resilient moduli of several current and proposed drainable base materials.

The materials studied were AASHTO No. 57, AASHTO No. 67, ODOT No.ODOT No.Iowa DOT No. ('IA mix') and the 'New Jersey mix' studied by Baumgartner (). “Evaluation of Resilient Moduli of Pavement Layers at an Instrumented Section on I in Oklahoma” (Solanki, P., Zaman, M., Muraleetharan, K. and Timm, D.).

International J. Road Materials and Pavement Design (in press), June The present study aims to investigate reclaimed asphalt pavement (RAP) materials for utilization for a pavement base layer material with the goal towards increasing the reutilization of materials and the movement towards increased pavement sustainability.

Reduced cost for materials and transportation of materials, overall environmental benefits and many other advantages have Cited by: 4. Resilient moduli and Poisson’s ratios of two compacted expansive soils from Colorado It should be noted that additional analyses such as those described in sectionwhich are usually neglected by conventional design guidelines, were also taken into account during database development and creation of Table 7.

Resilient modulus shows mixed trends with curing time, but Figure shows that moduli tend to be higher at 56 days of curing when compared to moduli at 7 days. Tests (NCHRP A Procedure 2) on WisDOT Grade 2 gravel compacted to 95% of MDUW determined by standard Proctor effort yielded an average summary modulus of MPa.

Permanent Strain Ratio 6 in. MCMs W=% 9 in. MCMs W=% 12 in. MCMs W=% Least-square regression R-square= 10 1 Number of Cycles Fig. Log-Log Plot of Permanent Deformation and Number of CyclesRegression parameter a in Monismith’s power model (Monismith et al., ) wasnot investigated in this.

The 80+ volume Annual Book of ASTM Standards contains ASTM's 12,+ standards and is available in print and online formats. The volumes can be purchased individually, as a section (at a 25% discount) or as the complete 80+ volume set (at a 50% discount).

Online volume subscriptions (HTML and PDF) are accessed via the ASTM Compass® platform. Soils and Pavements Laboratory (page images at HathiTrust) A limited study of factors that affect soil strength.

(Vicksburg, Miss.: Waterways Experiment Station, ), by Waterways Experiment Station (U.S.) (page images at HathiTrust) Comparison between the strengths of undisturbed and reconstituted sands from Niigata, Japan / (Vicksburg, Miss.

An extensive laboratory testing program was performed on subgrade soils stabilized using fly ash and lime kiln dust. The laboratory program included measurements of: compaction curves, small strain elastic moduli, resilient modulus (Mr), Briaud Compaction Device (BCD) modulus, and unconfined compressive strengths of subgrade soils mixed with Author: Yuning Louis Ge, Brent L Rosenblad, Richard W Stephenson.This paper presents the procedure of evaluation of the modulus of elasticity (E) and the modulus of subgrade reaction (k s) value based on the California Bearing Ratio (CBR) tests and FEM analysis.

The pressure-displacement response of the soil in the CBR mould is simulated using Cosmosworks FEM model where the soil, the load plunger, and the steel mould of CBR are .Manuscript: Revised CD-ROM Version Published by Guset User, Description: 3 Revised CD-ROM Version 4 5 6 13 unsurfaced pavement systems, and due consideration should be given to aggregate type and quality and.