Newsroom
  • Xella.com
  • Contact
  • en
  • |
  • de
  • News
  • Press
    • Media Library
  • Themes
    • Company
    • Digitalization
    • Innovation
    • People
    • References
    • Sustainability
  • About
Search
  • en
  • |
  • de
  • News
  • Press
    • Media Library
  • Themes
    • Company
    • Digitalization
    • Innovation
    • People
    • References
    • Sustainability
  • About

Starting with the raw materials

What are the requirements for our products and how do we manage to meet them? An important component of quality assurance at Xella is the control of the raw materials which are used.

05 November, 2020

We want to deliver high-grade products of consistent quality that our customers can rely on. To achieve this, we have set ourselves high standards, but we also must comply with legal requirements. In addition to many other quality assurance measures, a complete set of all raw materials used in the production of autoclaved aerated concrete and Multipor is therefore tested and evaluated every year at Xella Technologie- und Forschungsgesellschaft. Torsten Schoch, Managing Director of Xella T&F, explains more about this here in the video:



The conditions for optimal usability of our raw materials are very individual. For example, the building materials autoclaved aerated concrete and calcium silicate, which make up the majority of Xella's product portfolio, place special demands on the sand used in their production. Sand for autoclaved aerated concrete should contain a high proportion of quartz, at least 80 percent, in order to be able to ensure lower gross densities in the end product. This low bulk density results in better thermal insulation and a lower weight of the blocks and thus easier handling.

Evaluate new raw materials
In view of climate change, lime and cement production is to become more environmentally friendly. For this reason, work is being done on optimized firing processes that release fewer CO2 emissions through lower temperatures or shorter firing times. But so that the raw materials lime and cement produced in this way can be used for the manufacture of Xella products, certain parameters must be checked: The cement requires a precise analysis of the reaction and setting behavior.

A low-emission production method can also lead to a changed reaction sensitivity of the lime. For the production of calcium silicate units, the faster reacting limes, which are already produced at lower firing temperatures, are optimal, whereas for the production of autoclaved aerated concrete, rather slow reacting limes are advantageous. "A challenge for the future is above all to adapt the autoclaved aerated concrete recipes to the changed properties of the lime produced in this way", explains Torsten Schoch.

More about the work at Xella T&F.

#1 #Innovation #Research #Development #Raw Materials #2020 #Quality Assurance

Share this news

E-mail page Print page

More sustainability news

  • “Everything Starts at Home” - How Xella contributes to sustainable housing in Romania

    For the third year in a row, Xella is proud to support Habitat for Humanity, an international non-profit organization, that focuses on housing, this time with a new geographical focus: Romania. After

    View more
  • Tuzla plant commissions rooftop solar power system

    The Tuzla plant in Bosnia and Herzegovina has successfully installed and commissioned a rooftop solar power system. This marks an important step toward reducing CO₂ emissions and ensuring a more sus

    View more
  • Let’s plant pines campaign: 3,000 new trees

    In April, a unique environmental action by Xella Poland took place at the Ostrołęka Forest Division. The employees from the Ostrołeka plant, from the Warsaw headquarters, and their families joined

    View more

Links

 

Links

  • Company
  • Digitalization
  • Innovation
  • People
  • References
  • Sustainability
  • LinkedIn
  • Youtube

Introduction

2025 Xella International. All rights reserved.

Links

  • General Terms and Conditions
  • Privacy Policy
  • Imprint
  • Terms of Use