Rothoblaas - Soundproofing Solutions Page 42
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UNDERFLOOR IMPACT-ABSORBING MATS WHAT ARE THEY FOR? Underfloor impact-absorbing mats are the connection between the finish and the respective substrate. In addition to their soundproofing function, they must ensure that the floor can be installed easily and effectively. EN 16354 specifies test methods to determine the technical properties of the underfloor mat for use under laminate floors and contains minimum performance requirements for the underfloor system to work effectively. MECHANICAL REQUIREMENTS COMPENSATION CAPACITY - PC It is the product's ability to compensate for any unevenness in the substrate on which it is installed and thus eliminate unevenness. In general, the softer the mat, the greater its compensating capacity. This capacity is evaluated by measuring SHORE A according to EN ISO 868 and is expressed in mm. This is a very important property, especially when working on existing sites or working on sites that are not very clean. COMPRESSION STRENGTH - CS In order to ensure the integrity of the flooring, the compressive force, expressed in kPa, which causes a deformation of 0,5 mm, according to EN 826, must be determined. The greater the pressure necessary to obtain deformation, the better the product’s resistance to compression. DYNAMIC LOAD RESISTANCE - DL25 In order to ensure the integrity of the flooring even under long-term dynamic loads, the Dynamic Load Resistance must be determined according to EN 13793. The DL 25 value indicates the number of cycles the material can withstand before reaching a thickness loss ≤ 0.5 mm. Clearly, the higher the number of cycles, the better the strength of the material. ACOUSTIC REQUIREMENTS IMPACT SOUND NOISE INSULATION - IS The measurement of the reduction of the impact sound pressure level must be carried out in the laboratory according to EN ISO 10140-3. The index expresses the difference in decibels between the measurement of the impact sound pressure level of the construction assembly with the impact-absorbing mat and the measurement without the insertion of the product. AIRBORNE NOISE INSULATION- AS The measurement of the apparent soundproofing index Rw' must be carried out in the laboratory according to EN ISO 10140-2. It characterises the ability of the partition to limit the passage of airborne noise between two rooms. INSULATION AGAINST REFLECTED NOISE - RWS The "drum sound" indicates the noise level that is perceived in the room when an impact-type source, such as footsteps, acts on the floor surface of the same room. It is measured in "sone", the higher the RWS value, the less reverberation is perceived within the room. PROTECTION AGAINST FALLING OBJECTS - RLB The floor has the capacity to absorb high forces of short duration, such as shocks from falling objects. Measured in cm, the higher the RLB value, the higher the level of floor protection. 44 | UNDERFLOOR IMPACT-ABSORBING MATS | IMPACT NOISE
162 Pages | Valable jusqu’au 04/2024 | Page précédente | Page suivante
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