SEARCH ENGINEERING RESEARCH PAPERS

Geo-synthetics



RESEARCH REGARDING THE USE OF GEO-SYNTHETICS TO CONSOLIDATE THE FOREST ROADS'ROADWAY
free download

Abstract: Within the present paper the uses of geo synthetics for the consolidation of carriageable forest roads from the Sfantu Gheorghe Forestry Department are presented. In the case of Pava and Hanko III roads, the use of geogrids located at different structure

Geosynthetics in waste containment facilities: recent advances
free download

ABSTRACT: Geosynthetics are widely used in waste containment facilities, as these facilities have used literally all types of geosynthetics in all identified functions (eg, filtration, reinforcement, etc.). The inclusion of geosynthetic components is likely to expand as

Integral-abutment bridges: problems and innovative solutions using EPS geofoam and othergeosynthetics
free download

This report documents a research study performed by Prof. John S. Horvath, Ph. D., PE of the Manhattan College Civil Engineering Department. Background information concerning

Guidelines for using geosynthetics with hot-mix asphalt overlays to reduce reflective cracking
free download

This paper provides complete guidelines for using geosynthetics with hot-mix asphalt overlays to reduce reflective cracking. Definitions of the various types of geosynthetics that are commercially available along with some of their advantages and disadvantages are

Mathematical modeling of the stress-strain-time behavior of geosynthetics using the Findley equation: General theory and application to EPS-Block geofoam
free download

EXECUTIVE SUMMARY The time-dependent mechanical (stress-strain) behavior of polymeric geosynthetics has been a topic of significant interest for many years. Time- dependent mechanical behavior can be considered in practice using either an empirical

Advances and remaining challenges for geosynthetics in geoenvironmental engineering applications
free download

Abstract. Nine issues of importance to the use of geomembranes (GMs) and geosynthetic clay liners (GCLs) as part of composite liners in geoenvironmental applications are examined. These issues include the effect of: GCL-leachate compatibility on hydraulic

Study on the interaction behavior of geosynthetics and soil in China
free download

ABSTRACT: As a reinforcing material the geosynthetics are widely used in engineering practice to strengthen the foundation, slope, road, pavement, crushed-stone column, etc. However, the study on the reinforcement mechanism and the relevant design theory are
Geosynthetics have been used in pavement systems for several purposes, including reinforcement, layer separation, drainage, and moisture barriers. For the layer-separation application, the geosynthetic material is used to prevent soil fines from migrating into the

Long-term performance and lifetime prediction of geosynthetics
free download

Abstract: To properly understand and assess the long-term behaviour of geosynthetic materials it is necessary to investigate the various types of possible degradation mechanims. This includes both chemical and mechanical behaviour, and sometimes even their

Geoenvironmental applications of geosynthetics
free download

Abstract: The Keynote Lecture focuses on the use of geosynthetics for geoenvironmental applications that are linked with landfills, mining applications and ponds for environmental protection. The Keynote Lecture gives insight into the different applications and the

Improving the performance of mining infrastructure through the judicious use of geosynthetics
free download

ABSTRACT: I. Introduction Mining is the backbone of many economies around the world, including developed countries such as Australia. In many developing countries it provides more than 50% of the export earnings, for example Papua New Guinea, where it is 66%.

Eight-year field performance of secondary road incorporating geosynthetics at subgrade-base interface
free download

In June 1994 an instrumented 150-m-long secondary road pavement section was built in Bedford County, Virginia. This pavement section was composed of nine individual segments each 15 m long. The nine sections include three groups with aggregate base layer

Monotonic and cyclic pullout resistance of geosynthetics
free download

ABSTRACT An evaluation of soil-geosynthetic interface strength for different types of loading is important to the design of any anchorage detail of a reinforced soil structure or membranelined waste containment facility. The imposed loadings may be classified as

Long-term shear strength of multilayer geosynthetics
free download

ABSTRACT: Geosynthetics often have a sandwich-like multilayer structure, eg GCLs, textured GMs and GCDs. Different components made of diverse resins are bonded by various methods. When used on long and steep slopes and covered with thick soil layers,

Fundamentals of geosynthetics
free download

In the past three decades. geosynthetics have been used successfully worldwide in several areas of civil engineering. and are now a well~ aeceptcd construction material. Their use offers excellent economic alternatives to the conventional solutions of many civil

Comparison of oxidation stability of various geosynthetics
free download

ABSTRACT: Data from oven aging (in air) and immersion tests in water on HDPE- geomembranes (GM) and on polyolefin (PE, PP) nonwoven geotextiles (GTnw) are reported and the results of these long-term tests are compared. Most of the GTnw are poorly

Comparison between stepped isothermal method and long-term creep tests on geosynthetics
free download

ABSTRACT: The results of long-term creep tests in air, lasting for up to 14 years, on polypropylene, polyethylene and polyester reinforcing geotextiles are compared with the predictions from accelerated tests under the same loads using the stepped isothermal

Geosynthetics in pavements: North American contributions
free download

ABSTRACT: Geosynthetics have been used to reinforce the base layer of flexible pavement systems for the past thirty years. However, and in spite of the good field evidence that geosynthetic reinforcements can improve pavement performance, the specific conditions

Recent research and applications in the use of electrokinetic geosynthetics
free download

Abstract: New applications for geosynthetics have been identified if they can provide an active role, initiating biological, chemical or physical change to the matrix in which it is installed as well as providing the established functions. This can be achieved by

Functions and installation of paving geosynthetics
free download

ABSTRACT: Geosynthetics are being increasingly used at the asphalt overlay base level to enhance the overall performance of the paved roadways. This paper describes the present understanding of the functions of such paving geosynthetics, and their design aspects and

Assessment of geosynthetics interface friction for slope barriers of landfill
free download

ABSTRACT: Stability of Geosynthetic Lining Systems is, for a geotechnical standpoint, a complex matter. Three geomechanical questions were identified: sliding of the geosynthetic lining system on slope, pull-out strength of the geosynthetic anchorage at the top of the

Energy absorption in large dimension asphalt pavement samples reinforced withgeosynthetics
free download

This paper investigates the test results of fatigue crack propagation of large dimension asphalt pavement samples reinforced with geocomposite and geogrid. The large dimension samples were cut from the test section of the asphalt pavement structure. Laboratory scale

Advances in geosynthetics materials and applications for soil reinforcement and environmental protection works
free download

ABSTRACT Geosynthetics have become well established construction materials for geotechnical and environmental applications in most parts of the world. Because they constitute manufactured materials, new products and applications are developed on a

On site test of reinforced freeway with high-strength geosynthetics
free download

ABSTRACT: ABSTRACT: The SGC E78 Grosseto-Fano freeway, in the part Siena-Bettolle, crosses, among other things, the alluvial sedimentary environments of Tuscany region characterised by the presence of saturated clay loam soils, which are particularly plastic.
The increasing use of geosynthetics to reinforce soils in many geo-technical engineering applications requires better evaluation of the soil-geosynthetic interface properties for use in the design and analysis of the different reinforced soil structures. The soil-geosynthetic
The main requirement of any scour countermeasure or scour protection measure is to prevent erosion, so a top layer has to be built that is sufficiently resistant against the hydrodynamic loads and that protects the subsoil. Single elements have to be large

Survey of a bridge abutment reinforced by geosynthetics, with optic sensors integrated in geotextile strips
free download

The abutment comprises a main 7 m high reinforced soil wall that supports the piles of the bridge (Fig. 2). At the rear of the piles, there is a 2.5 m high wall which is also reinforced by geosynthetics. The 900 Keywords: reinforced geosynthetic, monitoring, design, retaining

IMPROVEMENT IN CBR VALUES OF EXPANSIVE SOIL SUBGRADES USINGGEOSYNTHETICS
free download

INTRODUCTION Pavement structure response is very sensitive to the characteristics of the subgrade, which provides the support base for such pavement structure. Problems associated with pavement construction become more critical when the subgrade consists

Lessons learned from a failure of geosynthetics-reinforced segmental retaining wall
free download

ABSTRACT: This paper presents a case history of a geosynthetics-reinforced segmental retaining wall, which collapsed during a sever rainfall immediately after the completion of the wall construction. In an attempt to identify possible causes for the collapse, a

Geosynthetics Engineering, combining two engineering disciplines
free download

ABSTRACT: Geosynthetic-reinforced soil retaining walls (GRS RWs) with a stage- constructed full-height rigid facing are described to demonstrate the advantages of Geosynthetics Engineering. The paramount importance of due design and construction

COMPARATIVE LIFE CYCLE ASSESSMENT OF GEOSYNTHETICS VERSUS CONVENTIONAL CONSTRUCTION MATERIALS, A STUDY ON BEHALF OF THE
free download

ABSTRACT: The European Association for Geosynthetic Manufacturers (EAGM) commissioned ETH Zürich and ESU-services Ltd. to quantify the environmental performance of commonly applied construction materials (such as concrete, cement, lime or gravel)

COMPARATIVE LIFE CYCLE ASSESSMENT OF GEOSYNTHETICS VERSUS CONVENTIONAL CONSTRUCTION MATERIALS, A STUDY ON BEHALF OF THE
free download

ABSTRACT: The European Association for Geosynthetic Products Manufacturers (EAGM) commissioned ETH Zürich and ESU-services Ltd. to quantify the environmental performance of commonly applied construction materials (such as concrete, cement, lime or gravel)

COMPARATIVE LIFE CYCLE ASSESSMENT OF GEOSYNTHETICS VERSUS CONVENTIONAL CONSTRUCTION MATERIALS, A STUDY ON BEHALF OF THE
free download

ABSTRACT: The European Association for Geosynthetic Products Manufacturers (EAGM) commissioned ETH Zürich and ESU-services Ltd. to quantify the environmental performance of commonly applied construction materials (such as concrete, cement, lime or gravel)

Reducing differential settlements under a road embankment in Korea by use ofgeosynthetics: a Finite Elements Analysis
free download

The road to Pusan airport is being enlarged from 14 m (7 m old road + 7 recently widened road) to 28 m. The road lays on a 10m-thick Silt layer and on a 10÷20m-thick Clay sublayer. About 2.0 meters of well compacted granular soil are being interposed between the asphalt

Geosynthetics research and applications in the mining and mineral processing environment
free download

ABSTRACT This paper presents research conducted under the 2003 North American Geosynthetics Society Award of Excellence. The objective of the research was to investigate the use of geosynthetics in the mining and processing sector and to summarize field

Some factors affecting geosynthetics used for geoenvironmental applications
free download

Abstract A number of factors potentially affecting the performance of geosynthetic clay liners (GCLs) and HDPE geomembranes (GMs) in geoenvironmental applications are reviewed. These include: the method of manufacture of GCLs; the interaction between GCLs with

Comparative Life Cycle Assessment of Geosynthetics versus Conventional Construction Material
free download

Executive Summary Comparative Life Cycle Assessment of Geosynthetics versus Conventional Construction Materials ii assessments. However, uncertainty due to variability in gravel density and in matching the thickness of the layers (95% interval of+/-7%, or

COMPARATIVE LIFE CYCLE ASSESSMENT OF GEOSYNTHETICS VERSUS CONVENTIONAL CONSTRUCTION MATERIALS, A STUDY ON BEHALF OF THE
free download

ABSTRACT: The European Association for Geosynthetic Products Manufacturers (EAGM) commissioned ETH Zürich and ESU-services Ltd. to quantify the environmental performance of commonly applied construction materials (such as concrete, cement, lime or gravel)

Finite element modelling of the pull-out test of geosynthetics
free download

Summary. A numerical investigation of the pull-out test of a geotextile has been carried out using 2D and 3D finite element simulations. The results obtained show the limitations of the

GEOSYNTHETICS RD--THE EARLY DAYS (1960s to Circa 1985)
free download

ABSTRACT This article summarizes geosynthetics research and development activities from about 1960 to the mid-80s. The primary geotextile applications are used as focal points of the developments that I was personally involved with or have some knowledge about.

Partial replacement of the granular layer at the bottom of a landfill: short and long term monitoring of drainage geosynthetics
free download

Abstract: Landfill owners use more and more renewable resources by substituting the granular layer with a drainage geocomposite in landfill covers. A greater demand concerns the bottom of landfills where usually a layer of 50 cm of gravel should be placed. The

New hybrid subgrade model for soil-structure interaction analysis: foundation andgeosynthetics applications
free download

ABSTRACT The Modified Kerr-Reissner Model is a new advanced subgrade model developed using a unique hybrid derivational approach. It synergistically combines the best features but none of the flaws of the traditional mechanical and elasticcontinuum

Quantifying the influence of geosynthetics on performance of reinforced granular bases in laboratory
free download

ABSTRACT: Interaction between geosynthetics (geogrid and geotextile) and aggregates under traffic wheel loading has been considered as one of high-priority problems by the US Transportation Research Board. The practical use of geosynthetics above a subgrade or

Coupling finite elements and discrete elements methods, application to reinforced embankment by piles and geosynthetics
free download

ABSTRACT The design of geotechnical earth structures is, due to the use of new technologies and new materials, more and more sophisticated. This needs the development and the adaptation of the existing numerical models to take into account the specificity and

Geomaterials research project-geofoam and geocomb geosynthetics: a bibliography through the second millennium AD
free download

Within a few months after becoming employed full time in academia in August 1987, I developed an awareness from several technical papers of the intriguing concept of controlled yielding within the ground as a means of reducing stresses from earth materials

PWRC certification of geosynthetics
free download

ABSTRACT: The Public Works Research Center (PWRC) has been engaged in certification of various geosynthetic products for civil engineering uses since 1987. In response to an application made by manufacturers and related parties, PWRC examines their products by

New electrically conductive geosynthetics for soft clay consolidation
free download

ABSTRACT: This paper seeks to discuss the performance of electro-osmotic consolidation in Singapore Marine Clay via prefabricated vertical drains (PVD) manufactured with electrically conductive polymer. Two series of laboratory tests were conducted under similar

Experimental studies on viability of using geosynthetics as fibers in concrete
free download

ABSTRACT It is evident from literature review that in the recent decades the thrust for finding an alternative to the costly steel reinforcement is increasing, several alternatives have been tested across the globe. Some viable alternatives are found, also many techniques of

The development of in-situ dewatering of lagooned sewage sludge using electrokineticgeosynthetics (EKG)
free download

ABSTRACT Once deposited in a lagoon sewage sludge in the form of a very thick liquid or cake is a difficult deposit to handle and most known methods to remediate or stabilise them are very costly or environmentally intrusive or both, EKG has the unique potential for

Effectiveness of geosynthetics in stabilizing soft subgrades
free download

16. Abstract This report introduced the research begun in 1999 at the University of Wisconsin-Madison to further understand aspects of geosynthetic-reinforced subbases in a pavement system. To learn more about how the performance of highway pavement is

Improving the bearing capacity of soils with geosynthetics
free download

ABSTRACT: Due to the globalization of the world economy and the global increase of trade, there is an increasing shipment of goods, which creates high demands on the maintenance and development of an efficient infrastructure (roads, railways and waterways). The

Clogging reduction in geosynthetics using ultrasonic waves
free download

Abstract: This paper reports the effect of ultrasonic waves on the reduction of clogging of permeable geotextiles exhumed from two fine-grained soils. Six different geotextile specimens with varying thicknesses were used. Clogging characteristics have been

Basic geosynthetics: a guide to best practices in forest engineering
free download

ABSTRACT-Geosynthetics are used in forest engineering applications for soil stabilization, where the basic functions are reinforcement, separation, filtration and drainage. In many routine applications, the basis for selection of an appropriate geosynthetic is with

The use of electrokinetic geosynthetics (EKG) in enhanced performance of sports turf
free download

The combined effects of electroosmosis (EO) and electrolysis (EL) include control of water flow, pore pressure, pH and oxygen levels. It was the realisation that these factors are some of the most important Keywords: sports turf, aeration, drainage, electroosmosis,

Soil-geosynthetics interaction properties for different types of soil
free download

ABSTRACT: Soil-geosynthetic interaction parameters play important role for design and performance of reinforced soil structures. In general, cohesionless soils are preferred as backfill or neighboring soil to the reinforcement for better performance. However, it is

Submerged barrier for coastal protection application built with tubes in geosynthetics of big diameter in Tuscany–Italy
free download

ABSTRACT: In this paper we present an ongoing field study aimed at the detailed monitoring process of a new submerged breakwater built with PET geocomposite geotextile tubes of big diameter, focusing on installation issues and medium term behaviour. Field

New equipment to conduct confined-accelerated creep tests on geosynthetics
free download

ABSTRACT Creep behavior of geosynthetics is commonly quantified by standard tests conducted using in-isolation specimens. These tests are time-consuming and may not consider the effect of soil confinement. Both concerns have been addressed in the

Geosynthetics and Dredged Materials in Dike Construction
free download

ABSTRACT: In the project DredgDikes different fine-grained and organic dredged materials are investigated to be used as dike construction materials. A large-scale research dike has been built in Rostock, Germany, including ten different cross-sections with different slope

Bearing capacity analysis of reinforced foundation ground by geosynthetics
free download

ABSTRACT: This paper describes a bearing capacity of reinforced foundation ground by geosynthetics due to flexible uniform strip footing load using rigid plastic finite element method. This method is based on the upper bound theorem, and due to the rninimizatíon

Comparative life cycle assessment of geosynthetics versus conventional construction materials
free download

Geosynthetic materials are used in many different applications in the civil and underground engineering. In most cases, the use of geosynthetic material replaces the use of other materials. The authors quantify the environmental performance of commonly applied

Practical Construction Details Used to Build an Instrumented Flexible Pavement withGeosynthetics
free download

ABSTRACT A flexible pavement has been constructed over poor subgrade soil consisting primarily of highly plastic clay in northeast Arkansas (the CBR strength ranged from approximately 1-2). Seventeen instrumented test sections (each 15 m in length) have

The use of geosynthetics to improve the performance of foundations in civil engineering
free download

The use of geosynthetics to improve the performance of foundations when constructing on soft compressible foundation soils has evolved considerably over the last two decades. Geosynthetics are being used for the following applications: embankments over soft soils,

Deformation characteristics of geosynthetics retaining wall loaded on the crest
free download

ABSTRACT: Laboratory model tests of reinforced soil retaining wall were performed to evaluate instantaneous and residual wall deformation by monotonic, sustained and cyclic vertical loading on the wall crest. The wall deformation during primary loading was

Evaluation of oxidative behavior of polyolefin geosynthetics utilizing accelerated aging tests based on temperature and pressure
free download

Polypropylene (PP) slit film geotextiles are regularly used in separation and reinforcement applications in which service lifetimes of 30 to100 years are required. For the long-term

Effects of an abutment construction on soft soil on a neighbouring structure: Influence of different construction techniques using geosynthetics
free download

Abstract. The topographic and geological conditions of several regions in Brazil favour the formation of large deposits of soft soils. Sometimes this requires the use of innovative techniques to allow constructions of geotechnical works in these sites. The presence of

Geosynthetics engineering: Successes, failures, and lessons learned
free download

ABSTRACT This paper presents two cases of failures and two cases of successes related to structures incorporating geosynthetics. Analyses of these cases are presented and lessons learned are discussed. An important lesson learned is that engineering problems, whether

Monitoring of geosynthetics in coastal structures in the Arabian Gulf marine ecosystem
free download

With increasing scarcity and cost of suitable rock in areas such as the Arabian Gulf, sand filled geosynthetic (SFG) structures are increasingly being used as an alternative to rock and concrete. Even in areas where suitable rock is readily available at reasonable cost, safety

Geosynthetics and Geotechnical Properties of Soil in a Developing World: A Lesson For Nigeria
free download

ABSTRACT This research stresses the need for Nigerian Geotechnical Engineers to make use of geosynthetics as it is used in other parts of Asia, Europe and North America. Geosynthetics have become well established constriction materials for geotechnical and

Geosynthetics: Cleanup Tools
free download

40 CIVIL ENGINEERING just how cost effective it is to design for geosynthetics can be answered by three projects undertaken by Soil Material Engineers, which began several years ago to extend the application of geosynthetics in environmental re-mediation

Jute Fibres for Geosynthetics–Strategies for Growth
free download

Abstract: While the use of jute in packaging, home décor etc. is well known, the use of jute in geotextiles is a largely unexplored area although it can offer vast benefits to the indigenous industry and agri-economy overall. The vast amount of research and development

Confined-accelerated creep tests on geosynthetics
free download

ABSTRACT The creep behavior of geosynthetics usually characterized by standard tests which present two main concerns: they are time-consuming and may not consider the possibly significant effect of soil confinement. Several approaches have been presented in

Comparative life cycle assessment of geosynthetics versus conventional filter layer
free download

RÉSUMÉ: Les géotextiles sont utilisés pour remplacer le gravier dans les couches de filtres. Cet article contient une description de la définition de l'objectif et du champ d'étude, de l'analyse de l'inventaire et des résultats d'un analyse de cycle de vie comparative d'une

Geosynthetics in barriers for hydrocarbon remediation in Antarctica
free download

ABSTRACT: An overview of geosynthetics used in contained treatment cells (biopiles) for remediation of two fuel spills at Casey station, Antarctica, is presented. The challenges associated with design and application in an Antarctic environment and areas of research

Time-domain analysis of frictional base isolation using geosynthetics
free download

ABSTRACT: The low interface shear strength of many geosynthetic interfaces offers the potential for cost effective seismic hazard mitigation by frictional base isolation. To facilitate engineering evaluation of performance, previous investigators have suggested values of

Reinforced Fly Ash Slope Using Different Geosynthetics
free download

ABSTRACT: The model tests were conducted in the laboratory without and with reinforcement in fly ash steep slopes on soft foundation to check the stability of steep slope. In this experiment fly ash is used as a filling material and two types of reinforcement were

Geosynthetics on asphalt wearing surfaces for timber bridge decks
free download

ABSTRACT The use of asphalt wearing surfaces on timber bridges for low-traffic volume roads have shown an improvement of the structure service life and the user comfort. The use of geosynthetic may provide benefits on the asphalt wearing surface since it improves

THE APPLICATION OF ELECTROKINETIC GEOSYNTHETICS IN THE ADVANCED CONDITIONING AND COMPOSTING PROCESSING OF SEWAGE SLUDGE
free download

Abstract: The safe and economic recycling and disposal of sewage sludge that is a by product of waste water treatment has become an ever increasing problem for the water treatment industry. In an effort to increase the reuse of sewage sludge, Electrokinetic Ltd.

Review of numerical models for geosynthetics in reinforcement applications
free download

ABSTRACT: This paper provides an overview of general classes of constitutive models for modelling of geosynthetic (polymeric) materials used in soil reinforcement applications (eg retaining walls, slopes and road bases). Model classifications include non linear

Geosynthetics facilitate road construction and mitigate environmental impact in Amazon Basin rainforest–10 years of performance
free download

Additional Info: Geosynthetics facilitate road construction and mitigate environmental impact in Amazon basin rainforest–10 years of performance. IN: Proceedings of the 2003 International

GEOSYNTHETICS: COASTAL MANAGEMENT APPLICATIONS IN THE GULF OF MEXICO
free download

The Gulf of Mexico is an ecosystem of critical social, ecologic, and economic importance. It is important to the region's unique culture and cuisine and is a vital resource worth billions of dollars to the energy, fishing, shipping, and tourism industries (Gordon et al., 2011).


FREE ENGINEERING RESEARCH PAPERS