Lightweight Expanded Clay Aggregates
Weber is the world's largest producer of lightweight expanded clay aggregates marketed under the Leca® brand. These aggregates can be used in lightweight blocks, slabs, and in applications like: insulation fill (ground floor insulation), water treatment, lightweight fillings (technical floors and flat roofs), geotechnical where characteristics as lightweight, insulation and drainage are important.
Lightweight expanded clay aggregates:
- Are totally natural products
- Contain non harmful substances or gases
- Have a low density: 15% of the density of traditional aggregates
- Provide thermal insulation
- Are resistant to moisture & chemical attacks
- Are non-biodegradable
- Are frost resistant
- Are non-combustible
Lightweight
Whenever lightweight building solutions are required, lightweight explanded clay aggregates are an obvious alternative, i.e. blocks, slabs, chimney systems, mortar, concrete and geotechnical applications.
Lightweight benefits to logistic operations, handling and application (ergonomics at the plant, distributor and building site) and final dead loads, and hereby slimmer constructions, less foundations, etc..
Lightweight blocks can be used where both lightweight, strength, thermal and sound insulation are necessary requirements.
A large range of blocks is available for all wall types, like:
- External monolithic wall
- External cavity wall
- Internal walls
- Industrial walls
- Garden walls
Lightweight combined with fast and easy installation is the success of chimney systems. Supplied in blocks or elements, these systems are guaranteed to fulfill the national requirements for air quaility.
When it comes to lightweight floor products, mortars or concretes, lightweight expanded clay aggregates can be used.
In geotechnical applications, where the exceeded load is a problem, lightweight expanded clay aggregates can be the solution, like on soft soils, over ducts, tunnels, train stations, parking areas, etc. Besides lightness, it also brings stability and perfect drainage conditions for the project.
Obtain good thermal and sound insulation
Lightweight explanded clay aggregates have an interesting density / strength relation, which gives large possibilities in the building solutions to create unique solutions for thermal and sound insulation applications
Lightweight insulating blocks – sandwich blocks for monolithic external wall solutions:
- U=0,16W/(m2*K)
- Lightweight
- Easy handling
- Wall systems
Coated expanded clay aggregates for ground floor insulation is a perfect solution for both housing and industrial buildings.
The coated expanded clay aggregates guarantee no capillary suction, and hereby a constant U-value.
The material can be pumped into the building site and gives an easy and fast filling and insulation of the ground floor.
It also solves the difficult work to fill and insulate around ducts and pipes in the ground.
Guarantee drainage and avoid extensive loads to the construction
Green roofs or roof gardens have become popular over the years. This is essentially the result of their versatility like their:
- Role in urban development
- Role in planning open spaces
- Ecological role
- Economic and/or protective role
Lightweight explanded clay aggregates can be used both as drainage layer and as growing media in green roof applications.
Besides a perfect drainage capability, the water absorption and retention characteristic of the material is very important in this kind of applications.
Using lightweight expanded clay aggregates in retaining walls, basement walls or around constructions gives a perfect draining of the construction and may reduce the horizontal loads with up to 70%.
