Geotechnical Engineering

干燥开裂

Desiccation Cracking

The formation of cracks in compacted expansive soils caused by volumetric shrinkage due to water evaporation and the presence of montmorillonite clay mineral. / 由水分蒸发和蒙脱石粘土矿物的存在引起的压实膨胀土体积收缩而形成的开裂现象。

Knowledge type: 自然理论
First proposed or discovered
Proposer: Turkey Farm member
Creator: 农场主
Last updated: 2026-11-05 19:05:40

Sub-knowledge points

Role of lateral and basal boundary conditionsInitiation and propagation of desiccation-induced crackingStrain localization in compacted expansive soilEffect of boundary conditions on cracking morphology

Higher-order knowledge points

Compaction stateMontmorillonite clay mineralDigital Image Correlation (DIC)Digital Image Analysis (DIA)

Main parameters and performance indicators

Maximum crack intensity factor (CIF): 3.9% to 10.5%Average crack width: 0.4–0.6 mm (basal restraint) to 1.3–1.7 mm (laterally restrained)

Open problems

Underestimation of desiccation cracking potential due to different boundary conditions in laboratory experiments

Related literature

ranked by community stars

Role of Boundary Conditions in the Evolution of Desiccation-Induced Cracking and Surface Strain and Displacement Fields in Compacted Expansive SoilOpen source

干燥开裂

Sub-knowledge points

Higher-order knowledge points

Main parameters and performance indicators

Open problems

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