Compressive Strength

Definition

Compressive strength is the strength of hardened concrete measured by the compressive test to determine its ability to resist loads.

Purpose

The purpose of determining compressive strength is to assess the load-bearing capacity of concrete. It is a critical parameter for ensuring the safety and durability of concrete structures.

Examples of Use

• Structural engineers test the compressive strength of concrete cylinders or cubes to ensure they meet the specified requirements for a construction project.
• During quality control, compressive strength tests are performed on concrete samples taken from a batch to verify consistency and reliability.
• In the design of buildings, bridges, and pavements, the compressive strength of concrete is a key factor in calculating load-bearing capacities and structural dimensions.

Related Terms

• Tensile Strength: The ability of a material to withstand tension forces.
• Shear Strength: The ability of a material to resist shear forces.
• Flexural Strength: The ability of a material to resist bending.

Notes

Compressive strength is typically measured in pounds per square inch (psi) or megapascals (MPa). Standardized tests, such as ASTM C39, are used to ensure consistent and accurate results.