Liapor masonry system: excellent ratio of thickness and thermoacoustic parameters

Especially in the construction of apartment buildings, administrative buildings, and other commercial properties, the weight of the masonry used plays a very significant role, as does the ratio of the thickness of the masonry to the acoustic properties of the wall. With Liapor masonry, an optimal ratio of these parameters is achieved thanks to the addition of lightweight ceramic aggregate Liapor. The blocks excel in low bulk density, which makes them very easy to handle. Furthermore, they offer strength and excellent thermal and sound insulation properties. In terms of safety, Liapor blocks fall among materials with a high degree of fire resistance (class A - non-combustible materials). Even with a very small thickness, Liapor masonry is non-combustible.

Load-bearing blocks of the Liapor M series are designed to achieve high air sound insulation index Rw with the minimal thickness of masonry. The chamber effect, which occurs due to the porosity of the blocks, results in this masonry having higher acoustic attenuation than load-bearing and non-load-bearing walls made from other classic masonry materials at the same surface weight. The material easily meets the increased requirements according to ČSN 73 0532 for sound insulation between rooms in buildings. Measured values of Rw reach up to 59 dB, making this material suitable for inter-apartment walls.

For exterior walls, Liatherm and Liapor SL blocks are used. For internal load-bearing masonry, the Liapor M series blocks are designated, which have been designed to achieve a high air sound insulation index and higher values of static load capacity with the minimal thickness of the masonry. The Liapor range also includes calibrated blocks with perfectly parallel horizontal bearing joints, precisely ground on a special grinding line. The high shape and geometric accuracy of the blocks (KSL, Liatherm K, and Liapor KM, all with a height of 248 mm) allows for thin-layer masonry on mortar beds with a thickness of only 2 mm. Overall, this reduces the labor involved in masonry, eliminates thermal bridges, and by reducing the thickness of the bearing joint by approximately 10 mm (up to 80%) to the final 2 mm, there is a saving of masonry mortar and thus a reduction in moisture in the masonry, which also dries faster. This also decreases the risks of cracking in the joint areas and in the plasters.
Acoustic blocks AKU for load-bearing walls and partitions meet the highest demands for air sound insulation.

Liapor R facing masonry is excellent for the implementation of unplastered public spaces. It allows the creation of aesthetically exceptionally interesting interiors, of course while maintaining all the advantages of lightweight ceramic concrete masonry. Although the porous structure of facing masonry predisposes it to very good thermal insulation, the aim during its development was not just to achieve standard values with the blocks themselves. It is anticipated that proven multi-layer systems will be utilized. However, these blocks are also suitable for acoustic constructions given their small thickness. The block itself with a thickness of 195 mm shows a laboratory sound insulation value of 50 dB. Using composite constructions with combination of facing masonry and load-bearing masonry can achieve up to 69 dB of building sound insulation.

More information about the Liapor masonry system can be found at www.liapor.cz.