DC Resistivity and SASW for validation of effeiciency in soil stabilisation prior to road construction

Dahlin, Torleif; Svensson, Mats; Lindh, Per

doi:10.3997/2214-4609.201406466

Cited by 12 publications

(10 citation statements)

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“…Applying high level tools for data modeling and visualization is a key tool for assessment of the soils acceptability for road construction using criteria of resistivity of soil strength to the pressure. The importance of the undertaken research is explained by the necessity of the civil engineering geotechnical works for constructing infrastructure and roads, as also well demonstrated in various geotechnical research [39][40][41][42][43] and papers on statistical analysis application in geosciences [44][45][46][47][48][49][50]. The soil acceptability for construction can be defined using various criteria: water content, compaction, shear strength, degree of saturation, to mention a few of them.…”

Section: Discussionmentioning

confidence: 97%

Measuring Equivalent Cohesion C<sub>eq</sub> of the Frozen Soils by Compression Strength using Kriolab Equipment

Lemenkov¹,

Lemenkova

2021

Civil and Environmental Engineering Reports

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Current paper presents the results of the experimental analysis on permafrost uppermost soil samples with various physical properties (moisture, porosity) tested with varied external pressure and time. The aim of this work is to test properties of the soil samples intended for the construction of buildings, railways and objects of civil infrastructure by modeled external pressure, data visualization and analysis. Variations in the soil samples were studied by analysis of the equivalent soil cohesion (Ceq) in frozen soil samples. Methods include integrated application of the laboratory experiments, methods of the statistical data analysis and 3D plotting performed by the selected LaTeX packages. Laboratory experiments were performed using KrioLab equipment ‘Sharikovy Stamp PSH-1’. The 15 series of experiments have been tested. Models of the soil strength are graphically presented and statistically analyzed showing the results of the experiment.

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Section: Discussionmentioning

confidence: 97%

Measuring Equivalent Cohesion C<sub>eq</sub> of the Frozen Soils by Compression Strength using Kriolab Equipment

Lemenkov¹,

Lemenkova

2021

Civil and Environmental Engineering Reports

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“…GMT is aiming to enable cartographic visualization and modelling of a high standards, high-quality maps based on the raster/vector datasets which can be effectively used for mapping the shape of the seabed and submarine landforms, thereby providing the knowledge base to detail the topography of the World Ocean. Approaches to the geological data analysis are diverse: ternary diagrams plotting (Reyes et al 2010;Lemenkova 2019d), geophysical methods (Dahlin et al 1999), swath--bathymetric mapping (Wells & Monahan 2002;Gauger et al 2007;Nitsche et al 2007), compression strength (Lindh 2004), various approaches to the data analysis, e.g. factor analysis, correlograms, cross-section plotting and visualization (Lemenkova 2018a(Lemenkova , 2018b, geophysical and geomorphological modelling based on tectonic analysis and mapping (Serra et al 2020;Gales et al 2013;Lemenkova 2019c.…”

Section: Discussionmentioning

confidence: 99%

GEBCO and ETOPO1 gridded datasets for GMT based cartographic Mapping of Hikurangi, Puysegur and Hjort Trenches, New Zealand

Lemenkova¹

2020

AUL. Folia Geogr. Physica

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The study focused on the comparative analysis of the submarine geomorphology of three oceanic trenches: Hikurangi Trench (HkT), Puysegur Trench (PT) and Hjort Trench (HjT), New Zealand region, Pacific Ocean. HjT is characterized by an oblique subduction zone. Unique regional tectonic setting consist in two subduction zones: northern (Hikurangi margin) and southern (Puysegur margin), connected by oblique continental collision along the Alpine Fault, South Island. This cause variations in the geomorphic structure of the trenches. PT/HjT subduction is highly oblique (dextral) and directed southwards. Hikurangi subduction is directed northwestwards. South Island is caught in between by the “subduction scissor”. Methodology is based on GMT (The Generic Mapping Tools) for mapping, plotting and modelling. Mapping includes visualized geophysical, tectonic and geological settings of the trenches, based on sequential use of GMT modules. Data include GEBCO, ETOPO1, EGM96. Comparative histogram equalization of topographic grids (equalized, normalized, quadratic) was done by module ’grdhisteq’, automated cross-sectioning – by ’grdtrack’. Results shown that HjT has a symmetric shape form with comparative gradients on both western and eastern slopes. HkT has a trough-like flat wide bottom, steeper gradient slope on the North Island flank. PT has an asymmetric V-form with steep gradient on the eastern slopes and gentler western slope corresponding to the relatively gentle slope of a subducting plate and steeper slope of an upper one. HkT has shallower depths < 2,500 m, PT is <-6,000 m. The deepest values > 6,000 m for HjT. The surrounding relief of the HjT presents the most uneven terrain with gentle slope oceanward, and a steep slope on the eastern flank for PT, surrounded by complex submarine relief along the Macquarie Arc. Data distribution for the HkT demonstrates almost equal pattern for the depths from -600 m to ₋2,600 m. PT has a bimodal data distribution with 2 peaks: 1) -4,250 to -4,500 m (18%); 2) -2,250 to -3,000 m, < 7,5%. The second peak corresponds to the Macquarie Arc. Data distribution for HjT is classic bell-shaped with a clear peak at -3,250 to -3,500 m. The asymmetry of the trenches resulted in geomorphic shape of HkT, PT and HjT affected by geologic processes.

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“…7) clearly demonstrate that addition of cement results in a very significant decrease in resistivity a few days after the treatment, which delineates the treated volume. The result also indicates that the stabilisation did not reach the depth claimed by the contractor, see the marked target depth (Dahlin et al, 1999b).…”

Section: Example: Quality Control Of Ground Stabilisation In Swedenmentioning

confidence: 91%

“…7. Resistivity imaging from area treated with cement stabilisation, where claimed extension of treated volume is marked along with cement percentage (Dahlin et al, 1999b). routinely in Denmark, in combination with other methods such as multi-electrode resistivity surveying and transient electromagnetic sounding, within a national mapping of the groundwater resources.…”

Section: Example: Aquifer Vulnerability Mapping In Denmarkmentioning

confidence: 99%

The development of DC resistivity imaging techniques

Dahlin

2001

Computers & Geosciences

320

178

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The development of direct current resistivity imaging techniques has been rapid in the last years. This applies to data acquisition as well as inverse modelling techniques, and has lead to a greatly expanded practical applicability of the method. Resistivity imaging is now becoming widely used in environmental and engineering applications where increased knowledge about the subsurface is sought. The ongoing development can be expected to continue.

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DC Resistivity and SASW for validation of effeiciency in soil stabilisation prior to road construction

Cited by 12 publications

References 0 publications

Measuring Equivalent Cohesion C<sub>eq</sub> of the Frozen Soils by Compression Strength using Kriolab Equipment

Measuring Equivalent Cohesion C<sub>eq</sub> of the Frozen Soils by Compression Strength using Kriolab Equipment

GEBCO and ETOPO1 gridded datasets for GMT based cartographic Mapping of Hikurangi, Puysegur and Hjort Trenches, New Zealand

The development of DC resistivity imaging techniques

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