Chất tạo bọt được sử dụng trong bê tông

Sử dụng chất tạo bọt trong bê tông là phương pháp phổ biến để sản xuất bê tông nhẹ. The density of this type of concrete varies from a few pounds per cubic foot to over ten thousand pounds per square foot. These concretes are used in a variety of applications, such as void filling, pipe filling, and a number of other construction processes.

A foaming agent is a liquid or solid material that generates air bubbles. When these bubbles are surrounded by a layer of foam, they do not collapse easily. Ngoài ra, the foam structure contains active proteins that provide good strength. The dilution ratio of the foaming agent has a large impact on the foam’s properties.

The foaming agent in a concrete mix can be made from several different materials. It can be manufactured using chemicals, which are typically supplied in powder form. It can also be a physical agent, such as a low-boiling-point liquid. It can be a synthetic agent, which includes petroleum products. Some of the more common foaming agents include benzenesulfonyl hydrazide (BSH), a sodium bicarbonate, azodicarbonamide, and calcium azide.

For foam concrete, a combination of cement, cát, and foaming agent is combined. The mixture is then pumped into a mould or structural element. It takes a few hours to fully harden. Sau đó, it can be released from the mould and poured into the desired location.

Foam concrete has a long history. Ban đầu, it was considered weak and nondurable. Tuy nhiên, advances in manufacturing equipment and foaming agents have led to its use on a larger scale.