Research progress on expansive soil cracks under changing environment.
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TLDR
The problem of expansive soil crack has gradually become a research hotspot, it elaborates the occurrence and development of cracks from the basic properties of expansive land, and points out the role of controlling the crack of expansive soils strength.Abstract:
Engineering problems shunned previously rise to the surface gradually with the activities of reforming the natural world in depth, the problem of expansive soil crack under the changing environment becoming a control factor of expansive soil slope stability. The problem of expansive soil crack has gradually become a research hotspot, elaborates the occurrence and development of cracks from the basic properties of expansive soil, and points out the role of controlling the crack of expansive soil strength. We summarize the existing research methods and results of expansive soil crack characteristics. Improving crack measurement and calculation method and researching the crack depth measurement, statistical analysis method, crack depth and surface feature relationship will be the future direction.read more
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Book ChapterDOI
Cracks and potholes in Vertisols: characteristics, occurrence, and management
J. Somasundaram,Rattan Lal,Nishant K. Sinha,Ram C. Dalal,Adhinarayanan Chitralekha,Ranjeet S. Chaudhary,Ashok K. Patra +6 more
TL;DR: In this article, the authors describe the occurrence, formation, characterization, and management of cracks and potholes for sustaining soil health and enhancing crop productivity on Vertisols, which is a challenging task because of specific physical constraints such as narrow workable range of soil moisture, peculiar consistency of sticky when wet and very hard when dry, and cracking.
Journal ArticleDOI
Crack formation in a mediterranean rainfed Vertisol: Effects of tillage and crop rotation
Rafael J. López-Bellido,Verónica Muñoz-Romero,Francisco J. López-Bellido,Carlos Guzmán,Luis López-Bellido +4 more
TL;DR: In this article, the authors evaluated the effect of the tillage system and crop rotation on the behaviour of cracks and soil compaction in a long-term experiment that was initiated in 1986 on a Mediterranean rainfed Vertisol in southern Spain.
Journal ArticleDOI
Evolution of soil-water and shrinkage characteristics of an expansive clay during freeze-thaw and drying-wetting cycles
TL;DR: In this article, the authors investigated the evolution of the soil-water characteristic curve (moisture content-suction relationships, SWCC), soil shrinkage characteristic curve, and microstructure of a compacted expansive clay during drying-wetting (DW) cycles and closed-system freeze-thaw (FT) cycles.
A Fractional Order Creep Damage Model for Microbially Improved Expansive Soils
TL;DR: In this article , Wu et al. studied the nonlinear shear creep behavior of microbially improved expansive soil by triaxial consolidation drainage shear test and showed that when the expansive soil was applied a small partial stress, the creep curve of soil exhibits transient deformation and decay creep.
Journal ArticleDOI
Simulation Study on Hydrological Process of Soil Cracks in Open-Pit Coal Mine Dump
TL;DR: In this paper , the authors investigated the influence of the crack width, rainfall intensity, and two simulation methods of hydrological processes under artificial rainfall conditions, and the results showed that the total runoff is affected by two factors, namely rainfall intensity and crack width.
References
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Journal ArticleDOI
Cracking in drying soils
TL;DR: Cracking in soils that are undergoing drying is controlled by soil suctions and by soil properties such as compression modulus, Poisson's ratio, shear strength, tensile strength, and specific surfa...
Journal ArticleDOI
A idealized framework for the analysis of cohesive soils undergoing desiccation
J M Konrad,R Ayad +1 more
TL;DR: In this paper, a model for crack formation in clays during drying was presented, and the onset of cracking was modelled, and crack depth was approximated with linear elastic fracture mechanics in mode I, i.e., opening of the crack.
Journal ArticleDOI
Numerical modelling of desiccation cracking
TL;DR: In this article, the initial conditions and the development of suction due to desiccation and varying material properties were inputted to UDEC, a distinct element code, using its internal programming language FISH.
Journal ArticleDOI
Tension Crack Development in Soils
TL;DR: In this article, a model for finite-element modeling of tension crack propagation in soils is proposed, based on the splitting of a single node into two distinct nodes in the wake of an advancing crack tip to replicate separation of material on either side of the crack.