Testing shrinkage factors: comparison of methods and correlation with index properties of soils

Abstract

The paper presents a study on the shrinkage properties of three clay soils from Poland. Shrinkage limit, volumetric shrinkage and relative volumetric shrinkage were determined, tested according to PN-88/B-04481 (1988) and BS1377: Part 2 (1990) and correlated with the index properties of soils. The shrinkage limit was also calculated from Krabbe's (1958) equation. The results showed that shrinkage limit values obtained by the BS method are lower than those obtained using the PN method, but the values calculated from Krabbe's equation differ significantly. While no strong correlation was found between shrinkage limit and index soil parameters, linear relationships were obtained between volumetric shrinkage and initial moisture content, shrinkage range, plasticity index and clay content. Following multivariable regression analysis, the relative volumetric shrinkage was expressed as a function of plasticity index and moisture content. This function can be used to predict volumetric changes of the foundations based on the moisture content and material properties of the soil.

Prediction of Heave from the CLOD Index for Natural and Contaminated Clay Soils from the Mazovia Area

“…[18,[25][26][27]). In this study, the relationship between CLOD index and plasticity index, clay content, and the sand-to-clay ratio was analyzed.…”

“…This paper is a continuation of a previous study by the present authors [14] focused on prediction of heave based on suction measurements, and contributes to the examinations of contaminated soil properties and estimating expansive soil behaviour for typical clay soils widely occurring in Poland [15][16][17][18][19][20][21].…”

Radish concretions grown in mud during compaction

“…Therefore, shrinkage cracks would form at a higher porosity (e.g. Izdebska‐Mucha & Wójcik, 2013). Based on this finding, there is no reason that this is also not valid for the enrichment of a concretion’s interior by microbial substances.…”

“…This value is only an estimate because organic matter affects the plasticity of mud and the shrinkage limit of fine‐grained sediments (e.g. Busch & Keller, 1981; Keller, 1982; Izdebska‐Mucha & Wójcik, 2013). The minus‐cement porosity of those parts of the concretions traversed by the outermost tip of the septarian cracks indicate that they started to form at a minus‐cement porosity of 60% or less.…”

Soil Shrinkage and Consolidation Study on Flood Embankments in Swamp irrigation Areas (Case Study: Tulang Bawang - Indonesia)

“…On the other hand, [4] who evaluates the volume depreciation in relation to changes in water content, suggests that the water content must also be considered together with the nature of the soil material in the volume depreciation. In principle, the shrinkage limit is defined as a condition where the land mass does not change in volume when the water content decreases [5].…”