All In One

Expanded clay is a well-proven, high quality, efficient and durable lightweight aggregate suitable for a wide range of applicants in the construction sector. Expanded clay is various sized granules, each with a hard ceramic shell that surrounds a honeycomb core.

It is a sustainable construction material packed with properties that improve the economic, social and environmental performance of a building or infrastructure over its whole lifetime. Expanded clay combines low density with high strength. In addition, the aggregate holds many other important characteristics, and it can be described as an “all-in-one” product, providing a huge range of properties vital for sustainable construction.



DURABILITY
Expanded clay is durable has long lifetime and requires no maintenance.

ADDS STRENGTH
Expanded clay can reduce the weight of concrete by almost 50% without compromising strength.

LIGHTWEIGHT
It is 4-5 times lighter than loose gravel or loose fill crushed stone.

STRONG
It can be used as loose fill and insulation in road and rail embankments and can sustain dynamic loads from heavy high-speed trains.

RECYCLABLE
Expanded clay is 100% recyclable or reusable. There are no problems with disposing of demolition waste and no use of new materials, new resources or new energy.

RESISTANT TO FIRE
It is classified as a fully non-combustible material. It has no reaction to fire, does not emit gases or smoke and retains its mechanical resistence and all other thermal and physical characteristics. It is an excellent protection against fire.

A THERMAL INSULATING MATERIAL
Insulating performance of loose fill expanded clay is in the same range as the best values of wood. Concrete made with expanded clay can be up to 12 times more insulating than normal concrete: winter and summer comfort is guaranteed.

REDUCES THE NOISE
It works well for both acoustic insulation and sound absorption. It is suitable in the home as a wall between dwellings and good outside as a barrier between houses and noisy infrastructures.

HAS A NEVER-ENDING LIFE
Expanded clay is chemically inert, contains no harmful substances or gases and is completely neutral. Its resistance to chemical attack is comparable to that of a glazed tile, glass or other ceramic materials.

PROTECTS THE ENVIRONMENT
There is no dangerous leaching from expanded clay, even when in contact with soil, water or rain. It does not emit VOCs or any other dangerous substances. It is good for the environment and good for health.

MANAGES HEAVY RAINFALL
Quick water drainage and run-off is guaranteed thanks to the 40% of hollow space between the grains. This enables the “run off” of water in urban areas to be controlled, protecting the natural environment and preventing flooding.

USED FROM THE NORTH POLE TO THE EQUATOR
Unlike other materials it is not harmed by freezing temperatures. It will not warp, break or burst. It is widely used in Northern European countries exposed to extreme weather conditions.
 

Leca International
Robert Jacobsens Vej 62A
2300 København S
Denmark

Telephone: +45 88 83 29 847
2017 Leca International . all the rights reserved