მსუბუქი ბეტონის ქაფი

ქაფის ბეტონი არის მსუბუქი სამშენებლო მასალა, რომელსაც აქვს თაფლის ფორმის დახურული ჰაერის უჯრედები მის სტრუქტურაში. ეს მასალა შეიძლება გამოყენებულ იქნას აპლიკაციების ფართო სპექტრში, როგორიცაა ასაწყობი ბლოკები, lintels, hollow walls & სართულები. It requires no forming, can be placed in-situ & offers excellent thermal insulation properties.

Typical materials for this type of concrete include cement, pozzolanic additives, fine aggregate & წყალი. It can also be supplemented with fly ash or white ground granulated blast furnace slag (GGBFS) to reduce the amount of cement needed. გარდა ამისა, protein-based foaming agents such as Greenford & Kemilite PR can be added to the mix to produce a highly aerated mixture.

Air entraining agent is introduced by mixing the foaming agent with the cement, sand and water slurry in a concrete mixer. This results in the production of a concrete with a much lower density than normal concrete, resulting in a more energy efficient building. The foam concrete can be poured into shape, without the need for compaction or vibration and can be used to fill large areas such as foundations.

Foam concrete has good tensile strength and flexural strengths, but the compressive strength decreases with increasing densities. This can be explained by the fact that as the densities of foam concrete increases, the pore size becomes smaller. ამ მიზეზით, it is important to choose the right foaming agent for this type of concrete.