Factors affecting the compressive strength of rock wool board

Rock wool board, as an insulation material, has always been an important part of our house's external wall insulation materials. Because of its lightweight and non combustible nature, it has been used as an important raw material for external wall insulation systems both domestically and internationally. However, rock wool board also has an invisible but undeniable product characteristic, which is its excellent compressive strength. So what is compressive strength. The compressive strength of rock wool board refers to the strength limit of rock wool board under pressure. This value directly relates to whether the rock wool board can effectively bear the important data of the external wall insulation system.

How did the compressive strength analysis of rock wool board come about? It is the pressure required to prevent the rock wool board from withstanding a large amount of pressure in a state of no lateral restraint until it ruptures due to compression. The testing method of rock wool board is generally carried out in the laboratory, using a special hydraulic press with a power of ten to one hundred tons or more to crush the test rock wool board samples. To test the compressive strength of rock wool board samples.

There are many factors that affect the compressive strength of rock wool boards, among which there are three important factors: organization, properties of the binder, and direction of pressure.

1. In terms of crystal particle size, some fine-grained rocks or cryptocrystalline rocks often have higher compressive strength than coarse-grained rocks. Due to the different types of natural rocks used in the production process of rock wool boards, the crystal particle size of the produced rock wool boards also varies. However, the crystal particles of rock wool boards produced from basalt are very small and have high compressive strength.

2. The properties of the binder include its compressive strength in terms of insulation materials, the adhesives used in the production process of rock wool boards, and based on the system structure of rock wool boards, we can know that rock wool boards consist of a bonding layer, insulation layer, plastering layer, decorative layer, and accessories. Both the bonding layer and plastering layer use adhesives, so their compressive strength should be good, However, it should be noted that the actual situation varies due to the different quality of the adhesive.

3. The direction of pressure The compressive strength of rock wool board also depends on the direction of compressive stress. Rock wool board has layers, and if the direction of stress is perpendicular to the layer, the compressive strength of rock wool board is very high.