Question 1

Why are expansion joints important in brick and concrete structures?

Accepted Answer

Within the UK construction sector, expansion joints are a fundamental design consideration for both brickwork and concrete structures. Expansion joints accommodate for changes in these materials resulting from thermal expansion and contraction, as well as moisture-induced movement. In brickwork, expansion joints mitigate the development of tensile stresses that can lead to cracking across masonry panels. Similarly, in concrete, these joints relieve internal forces, preventing structural cracking in slabs, walls, and other components common in UK builds. The correct installation of expansion joints are crucial for ensuring the long-term structural integrity and durability of brick and concrete structures throughout the UK's varied climate.

Question 2

What happens if you don't use expansion joints in brickwork?

Accepted Answer

Within the UK's fluctuating climate, neglecting to install expansion joints in brickwork can lead to significant structural issues. Without these planned movement zones, the natural expansion and contraction of bricks and mortar, driven by temperature and moisture variations, generate substantial internal stresses. These stresses often exceed the strength of the masonry, resulting in visible cracking – typically vertical or stepped cracks following mortar joints. This cracking not only detracts from the aesthetic appeal of the brickwork, a common feature in UK architecture, but also compromises its structural integrity, potentially allowing water ingress, which can exacerbate frost damage during colder UK winters and lead to further deterioration and costly repairs.

Brick and concrete expansion joints

Fillcrete Brickfill Expansion Joint Roll 10mm X 100mm X 10m

Suspended Concrete Flooring T Beam 4800mm

175mm Speed Pro EML Brick Reinforcement Coil Galvanised 20m

63mm Speed Pro EML Brick Reinforcement Coil Galvanised 20m

35/40/50mm Concrete Spacer (single)

Fillcrete Fillaboard Expansion Joint Strip 2.4m x 150 x 12mm

Fillcrete Fillaboard Expansion Joint Strip 2.4m x 100 x 12mm