...T. Yardimci; E. Guler; B. F. Tanyu An in-soil tensile test apparatus was developed to investigate the in-soil load-strain relationships of geosynthetics. The strain-controlled tests were performed to evaluate the influence of soil type, confinement pressure and vertical spacing on the reinforcement...

... to have different accuracy. This paper revisits the problem of geosynthetic-reinforced fills over voids from a probabilistic point of view for reinforcement tensile strain, tensile strength, and geosynthetic stiffness limit states. Particular attention is paid to the method used to select the isochronous...

...L. Tang; W. Francey; J. Zheng; X. Wang; X. Luo Gradient ratio tests were conducted to investigate the filtration behaviour of staple fibre needle-punched nonwoven geotextiles subjected to unequal biaxial tensile strains. Three groups of biaxial tensile strains were designed, with the ratios...

... is not clear enough. This paper presents a laboratory model study of a GRPS embankment to study the long-term geogrid strain under cyclic loading. The effects of parameters such as number of load cycles, load frequency, geogrid layer numbers, and length of supporting piles on the long-term strain of geogrid...

...E. M. Palmeira; A. C. G. Pires Geosynthetics have been used to reinforce soils for over four decades. They can also be used as reinforcement in buried pipe installations to reduce stresses and strains in the pipe, as well as the consequences of pipe explosions. This paper investigates the use...

.... To achieve this purpose, a series of laboratory model tests were carried out to investigate the dynamic responses of pipe buried in pure soil and rubber soil mixtures with volume content of 10%, 20% and 30% rubber particles. Test results such as earth pressure and strain of buried pipe are discussed...

...Y. Zhou; H. Yang; P. Wang; X. T. Yang; F. Xu The horizontal strain in the vacuum preloading/dewatering of dredged slurry is significant to the apparent clogging effect and estimation of surface settlement around a drain; however, it has seldom been investigated in previous studies. In this study...

...B. A. Marcotte; I. R. Fleming High localized strain in geomembranes caused by indentations from coarse, uniform drainage aggregate is associated with long-term stress cracking and has been widely studied. A number of large-scale lab tests were carried out with direct measurement of the distribution...

.... Comprehensive numerical modelling simulations were performed to show how these factors influence the shear stresses, shear displacements, translational stability and the axial strains/forces within the various geosynthetics. The numerical modelling was conducted using the finite difference code FLAC 2D...

... representative of products commonly used in practice. The effects of allowing geotextile strain on geotextile/geomembrane interface performance were quantified through a series of laboratory tests using an interface shear device that can be used to perform tests with geotextiles in both constrained...

...K.A. Warren; B. Christopher; I.L. Howard ABSTRACT: The measurement of geosynthetic strain is important to the development of numerical models that can predict the behavior of geosynthetic-reinforced flexible pavements. This paper outlines the key issues regarding foil strain gage selection...

...J.P. Giroud ABSTRACT: The design of geomembrane liners exposed to the risk of uplift by wind involves an implicit equation for the geomembrane strain in the case where the geomembrane has a linear tension–strain curve. Solving this equation by iterations is tedious and hinders the work of design...

...S.K. Shukla; N. Sivakugan ABSTRACT: Giroud [Geosynthetics International, 2 , No. 3, 635–641, 1995] presented expressions for the strain within a geosynthetic layer assuming it to take the shape of a circular or parabolic arc. A more realistic situation would be one in which the deflected...

... is installed within a longitudinal member of a geogrid reinforcement material. The structure of the optical fibre sensor and the measuring method to record strain in the geogrid are described. Laboratory tests were first carried out to assess the accuracy of geogrid strain measurements using the optical fibre...

... data also provides a baseline against which new design methods can be validated. In this paper, loads in soil reinforcement layers from 16 full-scale geosynthetic wall case histories were estimated from strain measurements and converted to load through the stiffness of the reinforcement material...

...D.L. Walters; T.M. Allen; R.J. Bathurst Measurements indicative of the internal behavior of full-scale geosynthetic-reinforced soil walls typically consist of reinforcement strains and overall deformations. The focus of this paper is the development of a methodology that can be used to convert...

... to both multiaxial and uniaxial strains induced by anchorage in trenches, differential settlements, and thermal changes. The existence of strain may alter the geomembrane surface, thereby affecting the strength of the interface. This paper presents the results of an investigation into changes in surface...

... structures in the field. In the majority of cases, the laboratory in-isolation creep rates were the same as or greater than the measured reinforcement creep rates in full-scale walls, corroborating that reinforcement load levels can be estimated from measured strain data. At the end of wall construction...

...: 1/612-222-2508, Telefax: 1/612-631-9334 1996 Installation damage Creep Geosynthetic Modulus Strain Technical Paper by T.M. Allen and R.J. Bathurst COMBINED ALLOWABLE STRENGTH REDUCTION FACTOR FOR GEOSYNTHETIC CREEP AND INSTALLATION DAMAGE ABSTRACT: The current practice to determine...

... on the performance of the rock-fill dam. Using numerical examples it is demonstrated that the tensile stiffness and tensile strength of the geotextile/geomembrane composite liner modifies the distributions of stress, strain and displacement in the dam. Two different models of the geotextile/geomembrane composite...