Application of concrete foaming agent

Overview of concrete foaming agent

Foaming agents are materials that promote the formation of foams, and are mainly divided into two types: surfactants and foaming agents. When the surfactant is present in a small amount, it can reduce the surface tension of the liquid (reduce the work required to generate foam) or improve its colloidal stability by inhibiting the coalescence of bubbles. The blowing agent is the gas that forms the gaseous part of the foam.

Foamed concrete is a special kind of lightweight porous concrete. In order to have air holes, you need a way to trap the concrete in the concrete before it starts sinking. Either the biggest trap is bubbles, or we can say bubbles here. In order to generate bubbles quickly and stably, we need foaming agents or chemicals that can generate these bubbles before pouring it into ordinary concrete.

Application of concrete foaming agent

Foaming concrete foaming agent is a substance, when mechanical force is introduced into the air, it can make the aqueous solution produce a large amount of foam. This substance is

Surfactants (surfactants) or surface active substances. The former includes anionic surfactants, cationic surfactants, and nonionic surfactants. The latter includes animal protein, vegetable protein, and fruit thin liquid. Foaming concrete foaming agent is also called cement foaming agent. Concrete foaming agent is a material that can reduce the surface tension of liquids and produce a large amount of uniform and stable foam, which is used to produce foamed concrete additives.

By comparing the foaming properties of different anionic surfactants with convenient materials and low prices, sodium α-olefin sulfonate (AOS) with good foam stability is preferably used as the foaming component. By adding appropriate amount of silicone foam stabilizer (zt-1) and thickening material carboxymethyl cellulose (CMC), a new type of foam concrete foaming agent can be prepared.

(1) By comparing four anionic surfactants with the same solution concentration, scientists found that AOS has the strongest foaming ability, followed by K12, AES and LAS. In terms of foam stability, AOS is better than the other three anionic surface activities, and the optimal concentration of AOS solution is 0.80%.

(2) When the 0.80% AOS foaming agent mother liquor is mixed with 0.20% silicone foam stabilizer zt-1, the foam reaches the best stability, the 1-hour settlement distance is 4.8mm, and the 1-hour yield is 38.4. Milliliters

(3) Based on the modification of AOS with the silicone foam stabilizer zt-1, the foam is further modified with the thickening material carboxymethyl cellulose CMC. It is found that when the dosage is 0.020%, the foam performance reaches the best level, the foam multiple is 37.5 times, the settlement distance in 1 hour is 1.8 mm, and the secretion water in 1 hour is 26.1 ml.

(4) The new foaming agent is used to prepare 300-500 grade low-density foamed concrete, and the product has good mechanical and thermal properties. The 28d compressive strength of 300-grade foam concrete reaches 0.82mpa, and the thermal conductivity is 0.062w/(m·K). The 28d compressive strength of 400-grade foam concrete reaches 1.3mpa, and the thermal conductivity is 0.075w/(m·K). The 28d compressive strength of 500-grade foam concrete reaches 1.9mpa, and the thermal conductivity is 0.087w/(m·K).

In summary, the results show that the surface of the foam prepared by the new foamed concrete foaming agent is fine, bright and stable. The expansion ratio is 37.5 times, the settlement distance at 1 hour is 1.8 mm, the displacement at 1 hour is 26.1 ml, and the height of the foam remains more than 50% at 48 hours. The foaming agent is used to prepare low-density foamed concrete.

The price of concrete foaming agent

The price of concrete foaming agent varies randomly with the production cost, transportation cost, international situation, exchange rate and the supply and demand of concrete foaming agent market. Tanki New Materials Co. Ltd aims to help all industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for concrete foaming agent materials, please feel free to contact to get the latest price of concrete foaming agent.

Supplier of concrete foaming agent

As a global supplier of concrete foaming agents, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of blowing agent solutions (including blowing agents, alkaline water agents, early enhancers, etc.), high-purity powder materials (including oxides, carbides, nitrides, single metals, etc.) and high-purity targets , Functional ceramics and structural devices, and provide OEM services.