Prediction of Soil Swelling Parameters

Pruška, Jan; Šedivý, Miroslav

doi:10.1016/j.proeps.2015.08.052

Cited by 14 publications

(5 citation statements)

References 1 publication

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“…Prediction relationships for quantifying swelling pressures were obtained by evaluating an extensive database of measurements carried out in the Czech and Slovak Republics (clays in Cypris Formation, tuffic clays, siltstones, chalk shale, etc) by company GeoTec-GS, a.s. and Czech Technical University in Prague using neural networks, multiple correlations, regression analysis, and sensitivity analysis with the professional statistical program QCExpert [24]. When using neural networks, we can freely choose dependent and independent variables.…”

Section: Prediction Of Swelling Pressure and Deformations Of Reinforc...mentioning

confidence: 99%

Problems with reinforced concrete industrial floors with regard to subsoil swelling

Pruška,

Šedivý,

Anderle

2024

Acta Polytech

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Most of the problems associated with open cracks in reinforced concrete industrial floors do not arise from technological indiscipline in the execution or exceeding the permitted floor load, but from the geotechnical profile beneath the floor. In the presence of swelling soil in the subsoil, the floors can then be shifted upwards by centimeters and create open cracks. This article describes regression relationships for the prediction of swelling pressure and deformation of reinforced concrete industrial floors based on indirect measurements. These relationships were obtained by evaluating a large database of measurements carried out by the company GeoTec-GS and the Czech Technical University in Prague using neural networks, multiple correlation, regression analysis, and sensitivity analysis. The article also presents the actual classification of the risk of surface damage of reinforced concrete floors due to swelling of the subsoil and an example of its application is given.

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Section: Prediction Of Swelling Pressure and Deformations Of Reinforc...mentioning

confidence: 99%

Problems with reinforced concrete industrial floors with regard to subsoil swelling

Pruška,

Šedivý,

Anderle

2024

Acta Polytech

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“…The methodology "Identification and solution of the problem of soils prone to swelling" also contains predictive relations for the calculation of individual parameters of swelling. The relationships were obtained by evaluating an extensive database of measurements carried out in the Czech and Slovak Republics (tuffitic clays, claystone, cretaceous marlstones) by the company of GeoTec-GS, a.s. and the Czech Technical University in Prague using neural networks, multiple correlation, regression analysis and sensitivity analysis with the professional statistical program QCExpert [10]. The prediction relationships are primarily designed for quick assessing whether the soil is or is not prone to swelling (without the necessity for time-consuming tests) and can only be used for soils in the natural environment without any additional additives (lime, cement, etc.…”

Section: Indirect Prediction Of Swelling Processesmentioning

confidence: 99%

Zastosowanie predykcyjnych zależności efektów pęcznienia dla podłoży drogowych

Pruška,

Šedivý,

Pavelcová

2024

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Impact of swelling can be observed in a wide range of civil and engineering structures. In the case of swelling in the subsoil of roadbeds, the destruction of the road pavement in cuts or collapse of slopes of cut is a frequent occurrence. Problems with deformation from swelling can also occur in the case of bridge abutments based on pile trestles. The unpleasant fact is that the impact of swelling can occur even after a long time. In the case of roads, high swelling pressures can lead to total destruction of the structure of the pavement even after years of operation. The susceptibility of soil to swelling can be described using swelling parameters. These parameters can be measured directly in the laboratory and in situ or indirectly estimated from empirical correlations. The paper describes the prediction of swelling processes using indirect measurements based on the methodology "Identification and solution of problems of soils prone to swelling" certified by the Ministry of Environment of the Czech Republic.

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“…These expansive minerals are susceptible to large volume changes up to 2.5 times the soil volume with sufficient moisture [ 23 , 24 , 25 ] and are most detrimental to light-weight structures [ 26 ]. Earlier, the complexities of the contributing factors to swelling and expansion of cement and lime treated sulphate-bearing soils have necessitated several investigations, including assessing the mechanical and chemical properties of these soils under various conditions, namely sulphate contents, curing periods, curing temperatures, and compaction efforts to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Behaviour and Microstructural Characteristics of Lime-GGBS-Treated Kaolin Clay Contaminated with Gypsum

et al. 2023

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In this experimental study, the physico-mechanical and microstructural properties of sulphate-bearing clays have been investigated. Sulphate bearing soils constituted by mixing kaolin and gypsum at 0%, 15%, 25%, and 35% gypsum contents were treated with 12% ordinary Portland cement (OPC) and 4%Lime (L) and 8% ground granulated blast furnace slag (GGBS) and subjected to compaction, swell, unconfined compressive strength (UCS), California bearing ratio (CBR), and scanning electron microscopy (SEM) and energy dispersive spectrometry (EDX) analyses. The results of the study showed that the use of L-GGBS improved the soaked CBRs of the treated samples by over 43% when compared to OPC-treated samples after 7-days curing. A reduction in water absorption by 82% was also observed with L-GGBS treatment after 28-days curing. The UCS results also showed better performance with L-GGBS treatment exceeding 856% at 28 days. The effect of increased cementitious product with increasing gypsum content was negated by simultaneous and rapid growth of ettringite minerals which reduced the strength and increased swelling of OPC treated samples up to 18.92%, exceeding allowable limits of 2.5% as specified in Highway Agency Advice Note HA 74/07. The L-GGBS treated gypseous soil samples meet the strength requirement for stabilised sub-base (CS) and stabilised road-bases (CB1 and CB2) as described in TRL ORN31. Hence, the use of L-GGBS combination was found to be effective in ameliorating sulphate-induced expansion and therefore encouraged in the stabilisation of subgrade and road-base materials with high sulphate contents.

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Prediction of Soil Swelling Parameters

Cited by 14 publications

References 1 publication

Problems with reinforced concrete industrial floors with regard to subsoil swelling

Problems with reinforced concrete industrial floors with regard to subsoil swelling

Zastosowanie predykcyjnych zależności efektów pęcznienia dla podłoży drogowych

Behaviour and Microstructural Characteristics of Lime-GGBS-Treated Kaolin Clay Contaminated with Gypsum

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