Thermal insulating lightweight concrete with Poraver

Thermal insulating lightweight concrete with Poraver

September 14, 2018
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Poraver expanded glass is a lightweight aggregate according to DIN EN 13055-1 and ideal for the production of lightweight concrete (LWC). The structural and thermal insulation properties of Poraver enable a wide range of concretes for different applications.

With Poraver you can produce purely mineral construction materials that meet all requirements to building physics and building biology with excellent values. Especially thermal insulation is very important. By adding Poraver, a suitable monolithic building material can be produced depending on the application. Time-consuming and costly external thermal insulation composite systems (ETICS or EIFS) can become superfluous.

Applications for thermal insulating lightweight concrete with Poraver

Walls & thermal separations

Compared to other lightweight aggregates, Poraver expanded glass has a very positive ratio of compressive strength to bulk density. This enables single- and multi-layer structures with very good thermal insulation properties and at the same time good compressive strength. The production of load-bearing and insulating roller shutter boxes is feasible due to the excellent properties of Poraver® lightweight concrete, as well as the thermal separation of windows, door frames and other components.

Insulation of flat roofs & ceilings

In modern residential buildings with a flat roof, bound Poraver® can be installed as a load-bearing roof insulation. For suspended ceilings, bound Poraver® serves as a levelling layer to cover pipelines and as an insulating base layer for underfloor heating systems. The use of Poraver® contributes to meet the requirements of modern passive houses and ecological standards in construction.

Production

By using different Poraver® grain sizes, thermal insulation concretes with densities from 270 kg/m³ to 800 kg/m³ can be produced. Based on the available grain fractions, an optimized grading curve can be created. Depending on the requirements, thermal conductivities of ≥ 0.07 W/(m∙K) or 28d compressive strengths of up to 13 N/mm² can be achieved for thermal insulating lightweight concretes. In general, Poraver® can be used to produce porous and dense lightweight concretes of all density classes.

Guide formulations

On request, we offer various guide formulations for lightweight concretes with Poraver® of different density classes. In addition, if you need support by our application engineering department, don’t hesitate to contact us! Please use our contact form!

Poraver advantages at a glance

  • Weight reduction
  • Excellent thermal insulating properties
  • Non-combustible (Building material class DIN 4102-A1)
  • Consistent lightweight aggregate quality due to industrial production
  • Secured availability
  • Protects natural resources (made from post-consumer recycled glass)

Examples of applications for Poraver LWC

  • Monolithic or multi-layered wall construction
  • Thermal separations on floor slabs
  • Insulation of roller shutter boxes
  • Thermal separation bricks
  • Mineral insulation for flat roofs
  • Bound levelling fill for covering pipelines
  • Load-bearing insulating layer under underfloor heating systems

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