Let’s learn a bit about the basic structure of a clay court in the traditional structure with natural materials and ClayTech clay court.
The first is traditional clay courts in France and Italy with almost 100% natural materials. Specifically, the basic structure of these pitches is as follows:
- The lowest layer is gravel and small stone for quick drainage, if the outdoor yard is invested a lot of money, right under the rock and gravel there is a drainage system.
- Next is the material taken from iron ore: waste materials of iron ore.
- Next is a hard lime layer with about 5 – 7cm thick.
- Top layer: People use a mixture of fine clay mixed with brick to blend in a certain formula to form a layer of flour and this layer of flour is evenly spread on the ground.
It is the top 2 layers that make a big difference to the clay court which makes the ball bounce high but slow. We can see the difference between Madrid Master 2012 and Rome Master 2012. The clay ground in Rome Master bounces higher and slower than the Madrid Master 2012 yard. The steps of running or bouncing down the red dust flying very clearly. The surface of the upcoming Roland Garros is the same standard and structure as the Rome Master.
The yard at Madrid Master is a hard plastic surface and converted into clay court using ClayTech technique. The basic structure of Clay Tech clay court includes:
- The bottom layer of ClayTech clay ground is a mixture of concrete mixed with synthetic resin such as the common Hard Court yard.
- Next is a layer of glue.
- The top layer is called ClayTech: ClayTech consists of a buffer layer with Synthetic – polypropylene material and covered on top is a special powder mixture. It is no longer pure clay mixed with ground bricks, but replaced by a layer of industrial clay powder that has properties similar to clay mixed with ground bricks. And this layer of flour and the bounce of the ball faster makes Nadal, Djokovic and other players complain about the pitch at the Madrid Master recently.