A Brief Discussion on the Sound Insulation Principle of Sound Insulation Mortar by Manufacturers
2025-11-23
Sound insulation mortar manufacturers state that sound insulation mortar is mainly composed of cement, quartz sand, sound insulation fillers, and high-quality water reducers mixed in specified proportions. It features excellent cohesiveness, outstanding noise reduction and sound insulation performance, strong adhesion to substrates, low shrinkage, and good workability—ready for use immediately after adding water. It offers stable quality, convenient construction, low consumption, and resists cracking and hollowing. During application, add an appropriate amount of water as required, mix evenly, and apply smoothly on the floor to form a sound insulation layer approximately 30mm thick. Cement mortar, made of cement, sand, and water in a certain ratio, is generally used for masonry walls, walls, or floors in humid environments or underwater. Aerated mortar is produced by adding appropriate admixtures (such as fly ash, attapulgite clay, etc.) to cement or lime mortar to save the dosage of cement or lime and improve the cohesiveness of the mortar. Common plastering mortars include cement-lime mortar, cement-clay mortar, and lime-clay mortar.
Sound insulation materials have minimal reflection of incident sound waves, meaning sound can easily enter and pass through such materials. It can be imagined that the structure of such materials should be porous, loose, and breathable—typical porous sound-absorbing materials. Their structural characteristic is that they contain a large number of interconnected micropores from the surface to the interior, i.e., they have a certain air permeability. Sound insulation is generally divided into three types: 1. Attenuation at the sound source; 2. Attenuation during propagation; 3. Attenuation at the human ear. Sound insulation methods refer to measures taken to block sound waves from propagating directly by using various energy-absorbing substances to consume the energy of sound waves when they travel through the air—such measures are called sound insulation methods.
Any material that can be used to block noise is generally referred to as a sound insulation material. There is a wide variety of sound insulation materials, including common ones such as hollow bricks, reinforced concrete walls, wood panels, gypsum boards, steel plates, sound insulation felt, and plywood. Strictly speaking, almost all materials have sound insulation effects; the difference lies in the degree of sound blocking performance. For the same material, its sound insulation capacity varies significantly depending on its surface density. Sound insulation capacity follows the Mass Law principle: the higher the areal density (mass per unit area) of the sound insulation material, the better its sound insulation effect—there is a positive correlation between areal density and sound insulation capacity.
The above is an explanation of the sound insulation principle of sound insulation mortar by manufacturers. We hope this information is helpful to you. If you want to learn more about sound insulation mortar, please feel free to consult our online customer service or call our company's service hotline. We will wholeheartedly provide you with high-quality services!