overconsolidation ratio; OCR
Technical term in soil mechanics and geotechnical engineering. Refers to the ratio of the maximum past effective stress to the current effective stress.
The larger the overconsolidation ratio, the higher the strength of the clay tends to be.
A consolidation test was conducted to determine the overconsolidation ratio of this ground.
圧密 (consolidation) is the process of soil compression under load, while 過圧密比 is a derived ratio describing the stress history.
正規圧密 (normally consolidated) describes soil that has never experienced a higher stress than the current one; 過圧密比 is 1 for such soil.
Compound of 過 (excessive), 圧密 (consolidation), and 比 (ratio). A direct translation of the English term 'overconsolidation ratio'.