What does Overconsolidated mean?
Overconsolidated definition
Consolidated to an excessive degree. adjective. (of soil) Consolidated to a greater extent than that due to the overburden. adjective.
What is normally consolidated and Overconsolidated?
Overconsolidation. If the current state of soil is on the normal compression line it is said to be normally consolidated. If the soil is unloaded it becomes overconsolidated.
What does Overconsolidated soil mean?
The soil which had its load removed is considered to be “overconsolidated”. This is the case for soils that have previously had glaciers on them. The highest stress that it has been subjected to is termed the “preconsolidation stress”.
What is the difference between normally consolidated and Overconsolidated clay?
Normally consolidated clays are these that are currently experiencing the maximum vertical overburden effective pressure they have ever experienced in their history. Over consolidated clays have experienced a higher overburden stress in the past.
What does OCR 1 mean?
The overconsolidation ratio (OCR) allows characterising the stress history of soils. This parameter can be computed from the preconsolidation stress, , and the overburden vertical effective stress for a given soil, , as. (5.2) In principle, values of 1 are associated with a underconsolidated state for the soil.
Why is Overconsolidation ratio important?
ABSTRACT: The overconsolidation ratio (OCR) of a soil is important in that the ratio affects the initial stress state and the compression and shear behaviour of the soil.
What is normally consolidated?
The condition that exists if a soil deposit never has been subjected to an effective pressure greater than the existing pressure, and if the deposit is completely consolidated under the existing overburden.
What do you mean by Overconsolidated clay?
over-consolidated clay Clay that has been more compacted than would be expected from the existing overburden, e.g. it has been subjected to pressure from overburden that has subsequently been removed by erosion.
How does soil become Overconsolidated?
There are many processes that causes the soil to become over-consolidated. Extensive erosion or excavation which results in the decrease of ground surface elevation. Extra loading from a glacier, which has since melted. Extra loading from a structure, such as storage tank, which has since been removed.
What is OCR explain?
Optical Character Recognition (OCR) is the process that converts an image of text into a machine-readable text format. For example, if you scan a form or a receipt, your computer saves the scan as an image file. You cannot use a text editor to edit, search, or count the words in the image file.
Why is OCR used?
OCR stands for “Optical Character Recognition.” It is a technology that recognizes text within a digital image. It is commonly used to recognize text in scanned documents and images. OCR software can be used to convert a physical paper document, or an image into an accessible electronic version with text.
What Overconsolidation ratio tells us?
The overconsolidation ratio (OCR) is a qualitative indicator of this densification or stiffening of the soil, and it is defined as the ratio of the maximum overburden stress ever experienced by the soil (i.e., with the ice sheet on top) to the present overburden stress (i.e., without the ice sheet).
What is Overconsolidation ratio?
Overconsolida- tion ratio (OCR) is described as the ra- tio of previous maximal preconsolida- tion pressure (σ’p) and current effective geostatic stress (σ’vo). The soil can be nonconsolidated (OCR < 1.0), normally consolidated (1.0–1.5), overconsolidated (1.5–10.0) and higly overconsolidated (OCR > 10.0).
What is primary consolidation settlement?
Primary consolidation is a process of dissipation of increased pore water pressure due to the application of loads on the soil layer and increases in the effective stress in the soil skeleton. This results in a volumetric change in the soil skeleton.
What is consolidation settlement?
When soil is loaded undrained, the pore pressures increase. Then, under site conditions, the excess pore pressures dissipate and water leaves the soil, resulting in consolidation settlement. This process takes time, and the rate of settlement decreases over time.
What are Overconsolidated clays?
What are the types of consolidation?
Full consolidation, proportionate consolidation, and equity consolidation are the three consolidation methods.
What are the types of OCR?
There are different types of OCR:
- Intelligent Word Recognition – IWR captures cursive text or handwritten texts.
- Intelligent Character Recognition – ICR captures handwritten or cursive text.
- Optical Word Recognition – OWR Targets typewritten text wordwise and is sometimes referred to as OCR.
What is an example of OCR?
It is also known as text recognition. In short, optical character recognition software helps convert images or physical documents into a searchable form. Examples of OCR are text extraction tools, PDF to . txt converters, and Google’s image search function.
What is OCR in simple words?
Optical Character Recognition (OCR) is the process that converts an image of text into a machine-readable text format. For example, if you scan a form or a receipt, your computer saves the scan as an image file.
Can Overconsolidation ratio be less than 1?
The overconsolidation ratio, OCR, is the ratio of σp to σ o, and nu- merically represents the state of consolidation: an OCR equal to 1 is a normally consolidated sediment, an OCR greater than 1 shows over- consolidation, and an OCR less than 1 shows underconsolidation.
What are the three stages of consolidation?
The consolidation of soil is divided into three stages including initial consolidation, primary consolidation, and secondary consolidation. The consolidation of soil is time-dependent and its analysis is usually based on Terzaghi’s theory.
What are the two types of consolidation?
There are two major processes that lead to the final consolidation. These are synaptic consolidation which takes place within immediate hours of learning and encoding while the other is system consolidation where hippocampal memories are independent of hippocampus storage after a certain period of time.
What are the stages of consolidation?
What is consolidation example?
An example of a consolidation is when two companies merge together. The merger of two or more commercial interests or corporations. The act or process of consolidating. In corporate law, the union of two or more corporations into a new corporation along with the dissolution of the original corporations.