Understanding Movement Joints in Construction

When it comes to designing and constructing concrete structures, one of the most important factors to consider is movement. Buildings, bridges, carparks, and flooring systems are constantly exposed to stresses such as temperature changes, heavy traffic, seismic activity, and material shrinkage. To prevent cracking, buckling, or structural failure, engineers incorporate movement joints into their designs.

What is a Movement Joint?

A movement joint is a purpose-built gap or space between sections of a structure that allows for controlled movement. By absorbing expansion, contraction, or shifting forces, movement joints protect the integrity of the surrounding structure and extend its service life.

They are commonly used in:

• Bridges – to absorb expansion caused by heat and traffic loads.

• Carparks – to manage shrinkage and thermal movement in large slabs.

• Industrial floors – to prevent cracking under heavy loads.

• Buildings – to accommodate settlement and environmental changes.

 Learn more about our Bridge Expansion Joints.

Why Are They Important?

Concrete and other construction materials naturally expand and contract with temperature fluctuations. Without properly designed movement joints, these forces can cause uncontrolled cracks, misalignment, and costly repairs.

Movement joints help by:

• Allowing safe expansion and contraction.

• Preventing structural damage and cracking.

• Improving durability and reducing maintenance costs.

• Ensuring compliance with engineering and safety standards.

Types of Joints

Several types of movement joints are used depending on the application:

• Expansion Joints – absorb thermal expansion in bridges, roads, and buildings.

• Contraction (Control) Joints – regulate where cracks occur in concrete slabs.

• Sliding Joints – allow for vertical or horizontal displacement in structures.

• Sealed Movement Joint Covers – protect the joint from debris and moisture while allowing flexibility.

For flooring applications, explore our Floor Joint Covers.

Solutions from Heard Group

At Heard Group, we specialise in providing movement joint systems for civil and construction projects across Australia. From bridge expansion joints to floor movement joint covers, our products are engineered for strength, flexibility, and longevity.

Our solutions are trusted by contractors, engineers, and asset owners to perform in demanding environments such as highways, carparks, airports, and commercial buildings.

Why Choose Heard Group?

• Proven expertise with decades of industry experience.

• High-quality, durable joint systems.

• Tailored solutions for unique project requirements.

• Australian-based support and distribution.

Talk to the Experts in Movement Joints

Whether you’re working on a bridge, carpark, or commercial development, choosing the right movement joint system is critical to the long-term success of your project.

Contact us today via our Enquiry Form to discuss your requirements and discover the right solution for your next project.