Determination of geotechnical parameters from geophysical loggings in detritic formations of Madrid

1998 ◽  
Author(s):  
I. M. Fernández ◽  
J. Estaire ◽  
V. Cuellar
Keyword(s):  
Geotechnical Parameters

scholarly journals Landfill liners from dam reservoir sediments

2016 ◽  
Vol 48 (1) ◽  
pp. 41-52 ◽  
Author(s):  
Karolina Koś ◽  
Eugeniusz Zawisza
Keyword(s):  
Natural Environment ◽  
Cohesive Soils ◽  
Dam Reservoir ◽  
Geotechnical Parameters ◽  
Landfill Liners ◽  
Reservoir Sediments ◽  
Waste Landfill ◽  
Dam Reservoirs ◽  
Soil Liner

Abstract Landfill liners from dam reservoir sediments. Every municipal solid waste landfill has to be properly secured to protect the natural environment from possible leachate. Most often an artificial sealing is used, which is based on a soil liner from cohesive soils (clays, silts). Usability evaluation of bottom sediments from Rzeszowski Reservoir for building these liners was presented in the paper. Sediments from dam reservoirs, gathered as a result of the siltation process, can be a valuable material for earthworks purposes. Determination of their possible ways of usage is important, especially before the planned dredging, because thanks to that this material will not be put on a heap. Based on the analysis of the geotechnical parameters of these sediments it was stated that this material can be preliminary allowed for using in liners.

scholarly journals BAYANAL code in geotechnical design based on Eurocode 7

2013 ◽  
Vol 45 (1) ◽  
pp. 17-26
Author(s):  
Simon Rabarijoely ◽  
Stanisław Jabłonowski ◽  
Kazimierz Garbulewski
Keyword(s):  
Numerical Code ◽  
Characteristic Parameters ◽  
Geotechnical Parameters ◽  
Promising Tool ◽  
Eurocode 7 ◽  
Geotechnical Design ◽  
Characteristic Values ◽  
High Degree ◽  
Geotechnical Characteristic

Abstract BAYANAL code in geotechnical design based on Eurocode 7. Geotechnical problems that are characterized by a high degree of complexity and uncertainty with respect to the input data are solved recently, using the Bayesian analysis (for instance the problem of a cautious estimation of the geotechnical characteristic parameters according to the Eurocode 7 requirements). The applicability of the Bayesian approach to geotechnics via a simple examples related to determination of characteristic values of geotechnical parameters for design structures is in the paper addressed. In order to select the characteristic parameters for the geotechnical design a new numerical code called BAYANAL was developed. Example of applying the BAYANAL code to analyse the DMT tests demonstrates that it is a powerful and promising tool in evaluation of ground properties and geotechnical parameters.

scholarly journals STABILIZATION AND SPECIFICATION OF CHARACTERISTIC VALUE OF GEOTECHNICAL PARAMETERS

2017 ◽  
Vol 10 ◽  
pp. 61
Author(s):  
Ivan Vaníček
Keyword(s):  
Laboratory Tests ◽  
Soil Stabilization ◽  
Logical Scheme ◽  
Geotechnical Parameters ◽  
Geotechnical Data ◽  
Earth Structures ◽  
Geotechnical Design ◽  
Characteristic Values ◽  
Different Soils

Soil stabilization, process, by which the soil properties are improved, is getting growing attention during last periods. Paper is focused on application for earth structures. Methods of soil stabilization together with their applicability for different soils are discussed firstly. The sensitivity of the process of the cautious estimation of the characteristic values of geotechnical parameters which are subsequently used for the design, is shown on the base of the logical scheme of the geotechnical design report for earth structures. Finally the need of the laboratory tests for the closer specification of the soil stabilization technology and also for the determination of the geotechnical data are discussed.

scholarly journals Evaluation of sample quality from different sampling methods in Finnish soft sensitive clays

2019 ◽  
Vol 56 (8) ◽  
pp. 1154-1168 ◽  
Author(s):  
Bruno Di Buò ◽  
Juha Selänpää ◽  
Tim Tapani Länsivaara ◽  
Marco D’Ignazio
Keyword(s):  
Storage Time ◽  
Soft Clay ◽  
Test Results ◽  
Geotechnical Parameters ◽  
Sample Quality ◽  
Constant Rate ◽  
And Performance

The determination of reliable geotechnical parameters from laboratory testing is highly dependent on sample quality. Over the past decades, undisturbed sampling of soft sensitive clays has been performed using various apparatuses and procedures. This paper outlines details of the design and performance of a new Laval-type tube sampler employed for the investigation of five soft clay sites located in Finland. The investigation was conducted using the new tube sampler and two different piston samplers. The sample quality was evaluated based on the recompression volume during reconsolidation to the in situ effective stress in constant-rate-of-strain oedometer tests. Test results show that tube samples are generally characterized by higher quality, especially in low-plasticity clays. In particular, the quality of piston samples is highly affected by the apparatus condition and sampling operations. Furthermore, the influence of storage time on tube samples was investigated. To guarantee a proper confinement, and thus reduce swelling, a pressurized system was applied to the tube samples obtained in two soft clay sites. Results demonstrate that the sample quality is not significantly affected by storage time as long as the soil is properly stored in the tube.

scholarly journals Stabilization of CL and CI Soil Using Sugarcane Bagasse Ash and Quarry Dust

2020 ◽  
Vol 5 (7) ◽  
pp. 1360-1364
Author(s):  
Abdul Hudoos A ◽  
Dr.Premalatha. K
Keyword(s):  
Clay Soil ◽  
Strength Test ◽  
Natural State ◽  
Geotechnical Parameters ◽  
Swell Index ◽  
Curing Period ◽  
Free Swell ◽  
Sugarcane Bagasse Ash ◽  
Quarry Dust

This paper presents the study of potential of bagasse ash with quarry dust to stabilize the clay soil. The evaluation involves the determination of the geotechnical properties of clay (CL&CI) soil in its natural state and also when mixed with various proportions of bagasse ash with quarry dust. The parameters tested include the specific gravity, particle size distribution, Atterberg’s limits, compaction characteristics, California bearing ratio (CBR) and the unconfined compressive strength (UCS). The strength test was repeated after curing period 0 day, 7days, 14days, and 28days of the treated samples. Results reveal that by addition of bagasse ash the geotechnical parameters of clay are improved as free swell index reduced by 89% for CL type soil and 60% for CI type soil. UCS increased by 56% and 11% for CL and CI type soil respectively. On addition of bagasse ash with quarry dust, soaked CBR increased 87%. Result also shows that curing improves strength of bagasse ash treated clay. These results imply that bagasse ash can be effectively used as an admixture to stabilize the clay soil as an alternative for soil sub grade in pavement of highway.

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