Concrete Flatwork Module

These flashcards cover key concepts and terminology related to concrete flatwork, aiding in understanding and retention of important information.

Subgrade

The ground or base directly under and supporting the concrete slab.

Sub-base

A thin layer of granular material placed on the prepared sub-grade to improve support.

Tolerances

Acceptable range of deviation in a flat surface of concrete slabs.

Damp Proofing Membrane (Vapour Barrier)

A barrier placed under slabs to prevent moisture loss from concrete and moisture ingress from the ground.

Curing

The process of protecting concrete from rapid drying and damage during initial setting.

Air-entrained Concrete

Concrete that contains tiny air bubbles to improve freeze/thaw resistance and workability.

Screeding

The process of leveling and finishing concrete to achieve a flat surface.

Reinforcement

Steel bars or mesh installed in concrete slabs to prevent cracking and provide structural integrity.

Control Joints

Planned cracks in concrete that allow for expansion and contraction by creating weak points.

Formwork

Temporary structures that hold the wet concrete in place until it hardens.