HeidelbergCement Lightweight Concrete

HeidelbergCement AG

Description

Lightweight concrete refers to concretes with a density of between 800 and 2000 kg/m³ (defined in DIN 1045). By comparison, "normal" concrete has a density of 2000 to 2600 kg/m³. Technically, the lower limit for lightweight concretes is currently around 350 kg/m³. Responsible for this "lightweight" is the addition of aggregates with high porosity or low density. Each grain has a high proportion of up to 85% by volume of the finest air pores. These air voids give the lightweight concrete its thermal insulation properties. The most commonly used light aggregates are expanded clay, expanded glass (recycled, fired glass), expanded slate or pumice. These can also be mixed with each other.

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Areas of application

Residential, agricultural, public or industrial buildings
Walls, cellars and other building elements
Renovation and modernisation
Slimmer load-bearing components due to their low dead weight
Bridge girders, beams and ceilings
New design freedom for modern architecture in building construction, civil engineering and bridge construction
Striking buildings and structures

Technical Information

Universal use: Lightweight concrete is available in compressive strength classes LC 8/9 to LC80/88. This makes it particularly suitable for use in walls, basements and other structural elements in residential, agricultural, public or industrial buildings.
Heat-insulating. Lower bulk density means better thermal insulation – ideal for lightweight concrete with its porous structure.
Non-combustible: Lightweight concrete belongs to the highest fire protection class A1 (DIN 4102, fire protection in building construction) and does not burn. Smoldering and harmful emissions are also not to be feared.
Environmentally compatible: Lightweight concrete consists of natural materials such as pumice or expanded clay or recycled materials that are harmless to health, such as expanded glass. Its thermal insulation properties help to save heating energy and thus also mean fewer emissions.
Pumpable: Lightweight concrete can be pumped in a special composition using a conventional car mast pump.

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