What is the foaming agent used in foamed concrete?

Protein and synthetic foaming agents are widely utilized in the manufacturing of foamed concrete [10]. The protein-based foaming agent is derived from animal blood gum and the synthetic foaming agent contains sodium laureth sulphate [11].

Which admixture is used in concrete?

15 Types of Admixtures Used in Concrete

• Water Reducing Admixtures.
• Retarding Admixtures.
• Accelerating Admixtures.
• Air Entraining Concrete Admixture.
• Pozzolanic Admixtures.
• Damp-proofing Admixtures.
• Gas forming Admixtures.
• Air detraining Admixtures.

What is the use of admixture in concrete mix?

Admixtures are used in concrete to alter its properties in various ways. Some common uses include improving workability, increasing or decreasing cure time, and increasing concrete strength. Admixtures can also be used for aesthetic reasons, such as to change the color of the cement.

How do you mix foam for concrete?

Foam concrete mix itself is made of fine sand, cement, water and stabilizing foam. A standard recipe is 2 parts of cement and fine, dry sand to 1 part water and foam generator. You will want to have a quality foam generator to get the best results.

Why accelerators type of admixture are used in concreting?

A cement accelerator is an admixture for the use in concrete, mortar, rendering or screeds. The addition of an accelerator speeds the setting time and thus cure time starts earlier. This allows concrete to be placed in winter with reduced risk of frost damage.

Which type of admixture are responsible for using creep in concrete?

Some admixtures (mainly accelerators) are also responsible for causing creep in concrete.

How does admixture affect concrete properties?

Chemically active mineral admixtures decrease workability and setting time of concrete but increase the heat of hydration and reactivity. On the other hand, microfiller mineral admixtures increase workability and setting time of concrete but decrease the heat of hydration and reactivity.

How does admixture improve workability of concrete?

Air entraining admixtures entrain small air bubbles in concrete. These air bubbles act as rollers thus improving the workability and are also very effective in freeze-thaw cycles as they provide a cushioning effect on the expanding water in the concreting in cold climate.

What is foam concrete made of?

Foamed concrete typically consists of a slurry of cement or fly ash and sand and water, although some suppliers recommend pure cement and water with the foaming agent for very lightweight mixes. This slurry is further mixed with a synthetic aerated foam in a concrete mixing plant.

What is the best foaming agent?

Surfactants. Sodium laureth sulfate, or sodium lauryl ether sulfate (SLES), is a detergent and surfactant found in many personal care products (soaps, shampoos, toothpastes, etc.). It is an inexpensive and effective foamer.