toowoomba concrete contractors

The Australian standard for concrete is AS 3600. This standard covers the production, sampling, testing and classification of concrete. It also includes requirements for the design and construction of concrete structures.

It is possible for concrete to be too strong. If a concrete mix is too dense, it can cause cracking and other problems. In addition, if the mixture is too wet, the resulting concrete may be too weak. It's important to get the proportions of sand, gravel, cement and water just right in order to produce a strong but durable concrete.

Concrete slabs should be designed with expansion joints to allow the slab to move freely. If a slab is too large without expansion joints, it will crack.