Expanded vermiculite bricks are heat-insulating products made from expanded vermiculite and a binder, featuring regular shapes. They include cement expanded vermiculite products, water glass expanded vermiculite products, and asphalt expanded vermiculite products, among others.

Vermiculite bricks have a density of 0.4～0.8g/cm³, a thermal conductivity at room temperature of 293～502.4J/(m·h·℃) (70～120cal/(m·h·℃)), compressive strength <2.45MPa, and water absorption rate of about 6%.

Granular vermiculite is typically mixed with an adequate amount of high-strength binder, lightly compressed into shape, and then dried or baked to form. The thermal conductivity of the binder is usually higher than that of the expanded vermiculite, so the addition of the binder gives the vermiculite new uses, but also reduces its insulating effectiveness.

Vermiculite bricks are thin-walled, hollow-structured products with low strength and melting points. Their refractory and high-temperature properties are inferior to those of other lightweight refractory materials, making them unsuitable for load-bearing areas and not ideal for medium to high-temperature insulating materials. They are used at temperatures ranging from 800 to 1100°C. Vermiculite bricks are widely applied in roof treatments and soundproofing applications.

Vermiculite brick specifications: 240*114*65mm

We can also manufacture according to the customer's specifications.

Vermiculite brick applications

Construction: Lightweight Materials, Lightweight Concrete Aggregates (Lightweight Wall Powder, Lightweight Mortar)

Thermal-resistant materials: wall materials, fire-resistant panels, fireproof mortar, refractory bricks

Insulating, thermal, and sound-absorbing materials; Insulation for underground and greenhouse piping, interior and tunnel installations, as well as public building walls and ceilings

Metallurgy: Steel frame cladding materials, ironmaking, foundry slag; Cladding materials for high-rise steel structures, vermiculite loose material