ข้อดีและข้อเสียของคอนกรีตโฟม

คอนกรีตโฟม is a lightweight concrete made by mixing fine aggregates, foaming agents and water. It can be produced with natural or synthetic foaming agents.

Lightweight concrete has many advantages over conventional concrete, such as lower costs, faster construction, high energy efficiency and low environmental impact. It can be used in a wide range of applications including insulation, structural elements, filling of voids and grouting.

Its properties include a high strength-to-weight ratio, น้ำหนักเบา, การเก็บรักษาความร้อน, sound insulation and corrosion resistance. It can be produced with a variety of admixtures, including lime, ยิปซั่ม, cement and fly ash.

กำลังรับแรงอัด: The compressive strength of คอนกรีตโฟม depends on the water-cement ratio, mix design and the type of foaming agent. It can be between 1.0 และ 15 MPa, depending on the amount of foam and the grade of cement.

ฉนวนกันความร้อน: The thermal properties of คอนกรีตโฟม are also affected by the pore structure and the size distribution of air voids. The narrower the air voids, the better the insulation.

Drying shrinkage: คอนกรีตโฟมs have a lower drying shrinkage than ordinary concrete. This is because the air voids are more dense than the aggregate particles.

Corrosion: The cellular structure of คอนกรีตโฟม has a greater resistance to corrosion than the cellular structure of ordinary concrete. It is therefore an excellent choice for exterior protected constructions where corrosion is a problem.

Adding carbon fiber (CF) to the คอนกรีตโฟม increases its mechanical performance. อย่างไรก็ตาม, the CF must be preprocessed before being added to the concrete mixture.