Plain Concrete

Definition

Plain concrete is concrete that is either unreinforced or contains less reinforcement than the minimum amount specified in the Code for reinforced concrete.

Purpose

Plain concrete is used in applications where high tensile strength is not required and where the structural loads are primarily compressive. It provides a cost-effective solution for many construction needs.

Examples of Use

• Pavements: Used in sidewalks, driveways, and roadways where reinforcement is not necessary.
• Foundations: Applied in strip footings and slab-on-grade foundations for small structures.
• Non-Structural Elements: Used in garden walls, patios, and walkways.

Related Terms

• Reinforced Concrete: Concrete that includes steel reinforcement to provide additional tensile strength.
• Mass Concrete: Concrete placed in large volumes, such as dams and large foundations, where temperature control is essential.
• Precast Concrete: Concrete elements that are cast and cured in a controlled environment before being transported to the construction site.

Notes

• Strength: Plain concrete has good compressive strength but low tensile strength, limiting its use in structural applications.
• Cracking: Prone to cracking under tensile loads; hence, not suitable for load-bearing structures without reinforcement.