cohesive soil: meaning, definition, pronunciation and examples
Very Low Frequency (C2)Technical/Specialized
Quick answer
What does “cohesive soil” mean?
A type of fine-grained soil (like clay or silt) whose particles stick together due to intermolecular forces, giving it plasticity and strength.
Audio
Pronunciation
Definition
Meaning and Definition
A type of fine-grained soil (like clay or silt) whose particles stick together due to intermolecular forces, giving it plasticity and strength.
In geotechnical engineering, soil that exhibits cohesive strength due to the electrochemical bonding between its particles. It is characterized by its ability to retain a shape when moulded and its increased strength when dry.
Dialectal Variation
British vs American Usage
Differences
No difference in terminology or meaning. Spelling conventions for related words follow national norms (e.g., 'behaviour' vs. 'behavior').
Connotations
Purely technical in both dialects. No cultural or evaluative connotations.
Frequency
Identically rare, used exclusively within civil engineering, geology, and related fields.
Grammar
How to Use “cohesive soil” in a Sentence
The [foundation/pile] was driven into cohesive soil.[Cohesive soil/Clay] exhibits significant [strength/cohesion] when [dry/unsaturated].Vocabulary
Collocations
Examples
Examples of “cohesive soil” in a Sentence
verb
British English
- The clay was observed to cohere, forming a classic cohesive soil.
- We must analyse how the silt particles cohere under pressure.
American English
- The material cohered into a solid mass, demonstrating cohesive soil behavior.
- They tested how well the sample cohered after drying.
adverb
British English
- The particles bonded cohesively, forming a stiff clay.
- The soil behaved cohesively during the shear test.
American English
- The material held together cohesively when compacted.
- It failed cohesively rather than granularly.
adjective
British English
- The cohesive soil properties required a different foundation design.
- They conducted tests on the highly cohesive soil sample.
American English
- The cohesive soil layer presented a challenge for drainage.
- Engineers evaluated the site's cohesive soil strength.
Usage
Meaning in Context
Business
Virtually never used. Might appear in a construction project report or tender document.
Academic
Core term in geotechnical engineering, soil science, and civil engineering textbooks and papers.
Everyday
Extremely unlikely. A layperson might say 'clay' or 'heavy soil'.
Technical
The primary context. Used in site investigations, lab reports, engineering design, and geotechnical analysis.
Vocabulary
Synonyms of “cohesive soil”
Strong
Neutral
Weak
Vocabulary
Antonyms of “cohesive soil”
Watch out
Common Mistakes When Using “cohesive soil”
- Using 'cohesive' to describe any sticky substance outside the technical soil context (e.g., 'cohesive jam').
- Confusing 'cohesive soil' (shear strength from particle attraction) with 'compact soil' (dense from mechanical pressure).
- Misspelling as 'cohessive' or 'coheasive'.
FAQ
Frequently Asked Questions
Clay is the most common type of cohesive soil, but 'cohesive soil' is a broader category that includes fine silts and other materials exhibiting cohesive strength.
No, typical sand is cohesionless or non-cohesive. Its strength comes from friction between particles, not from bonding.
Its properties—like low permeability, plasticity, and strength that changes with water content—directly impact foundation design, slope stability, and excavation safety.
It can be rolled into a thread without crumbling (plasticity test), feels sticky when wet, and hardens significantly when dry.
A type of fine-grained soil (like clay or silt) whose particles stick together due to intermolecular forces, giving it plasticity and strength.
Cohesive soil is usually technical/specialized in register.
Cohesive soil: in British English it is pronounced /kəʊˈhiːsɪv sɔɪl/, and in American English it is pronounced /koʊˈhiːsɪv sɔɪl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of COHESIVE as 'CO-HERE-SIVE' – soil where particles 'co-here' or stick together like clay, unlike loose sand.
Conceptual Metaphor
SOIL AS A BONDED MATERIAL: The soil is conceptualized as a material held together by internal bonds (like a weak solid), rather than as a collection of loose grains.
Practice
Quiz
What is the primary characteristic that defines cohesive soil?