Multi-Storey Building Construction with the Use of Expanded Clay

Modern multi-storey construction increasingly relies on monolithic frame technology. One of the most advanced materials used in this type of construction is expanded clay concrete blocks. These blocks offer numerous advantages, making them highly sought after by professional builders:

• Production using high-tech semi-dry vibropressing increases strength, reduces water absorption, and enhances frost resistance.
• A low thermal conductivity coefficient eliminates the need for additional insulation.
• Construction speed increases by approximately 4.5 times due to the large size and low weight of expanded clay concrete blocks, while the minimal number of joints reduces thermal bridging.
• The light weight of the blocks reduces the load on the foundation, lowering its overall construction cost.
• No additional costs for formwork or other procedures are required.
• A thin layer of plaster is sufficient for exterior finishing, which reduces expenses on materials, labor, and special fixings.
• The material is eco-friendly, fireproof, and breathable, creating a healthy indoor climate for safe living.

There are various types and sizes of expanded clay blocks used for load-bearing and enclosing structures in multi-storey construction.
The construction of interior walls requires particular attention when choosing materials. Expanded clay blocks offer adequate sound insulation, making them ideal for such applications. Their low weight helps reduce the impact on the building's foundation. These blocks are not only environmentally friendly but also highly suitable for residential construction in terms of comfort.
Additional thermal insulation work is especially important on the upper floors of multi-storey buildings. Attic insulation often involves expanded clay, which helps prevent heat loss. A vapor barrier layer is laid down first, followed by an even layer of expanded clay at least 15 cm thick. The ideal thickness may vary depending on regional climate conditions.
Expanded clay concrete screed enhances indoor comfort by insulating floors. In contrast, sand-cement screed is only used for leveling and does not contribute to thermal or acoustic insulation. Expanded clay concrete screed can level large differences in floor height, insulate the surface, and significantly reduce noise penetration. It provides a convenient base for any type of flooring and lasts for many years without the need for repairs. The screed is applied over a waterproofing layer on top of the concrete slab. A mixture of water, expanded clay, and cement is poured and leveled accordingly.
Floor insulation technologies using dry-fill expanded clay of small fractions are also gaining popularity. First, laser leveling is performed; then, the expanded clay is poured and leveled. After that, moisture-resistant gypsum boards are placed on top. This method saves both time and money while maintaining the quality of more complex systems.