Foam concrete is a kind of concrete with lightweight and has ideal strength. Because of the hollow structure in foam concrete, it has the function of absorbing heat and isolating sound.
The density of foamed concrete is 300-1200 kg/m3, and the thermal conductivity is between 0.08-0.3W/ (m ·K).
Foam concrete is widely used in CLC blocks, lightweight partition panels, roof insulation, floor cushion construction, floor heating backfilling, and other occasions.
At the same time, foam concrete is also a good sound absorption material, which can be used in highway sound insulation boards, sound absorption boards, and other fields.
Generally speaking, foam concrete is a kind of building material with multi-function, environmental protection, and economy, which has a wide application prospect.
Foam cement is a new type of lightweight thermal insulation material containing a large number of closed pores. It is to use mechanical method first to concrete foaming agent full foam, and then foam and cement mud even mixing, cast-in-place construction, or through the pumping system of foaming machine molding and become. Finally, after natural conservation, formed.
It belongs to a kind of bubble insulation material. Its outstanding feature is the closed foam hole inside the concrete can make the concrete lightweight, heat preservation, and heat insulation.
Foam Cement Construction Process
Feed the concrete foaming agent into the air compressor to produce foam with a certain tension. Then mix the foam and cement slurry, during this process cement will continue to expand. When the expansion effect reaches the preset ratio the foam cement can be produced.
Usually, the foam cement is used in the field of the ground heating insulation layer, roof insulation layer, and frame structure of the wall filling layer.
For cement, people generally use 32.5R ordinary Portland cement. For the foaming agent, the animal foaming agent is recommended for the insulation industry.
Because in terms of the performance, animal foaming agents can produce independent pores, and the product has high strength. The produced foam cement has light bulk density, uniform distribution of pores, good thermal insulation, permeability, and good sound insulation. Due to the characteristics of continuous bubbles, compared with animal foaming agents, vegetable foaming agents can make foam cement with higher bulk density and poor thermal insulation, and it is inferior to animal foaming agents in impermeability and sound insulation. However, the vegetable foaming agent has the advantages of a large foaming amount and good fluidity and is easier to operate than animal foaming agents in floor heating construction.
It is suggested that foaming agent manufacturers produce foaming agents with different characteristics according to construction needs. For example, for constructing the inclined roof, the pure animal foaming agent is recommended, because its fluidity is poor, and strength is good. For flat roofing and the floor heating construction, the mixed foaming agent is recommended. Because the mixed foaming agent is added a certain botanical composition on the basis of the animal foaming agent, so that the foam multiples, the liquidity increases, and it is easy to level, making it suitable for floor heating construction.
Suppliers of Concrete Additives
TRUNNANO is a reliable foaming agents supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.
If you are looking for high-quality CLC foaming agents, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)
We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
What is Foam Cement?
Foam cement is a kind of new light insulation material containing a large number of closed pores. It is made by firstly fully foaming the concrete foaming agent with mechanical methods, then evenly mixing the foam with the cement slurry, conducting cast-in-place construction, or mold forming through the pumping system of the foaming machine. Finally, after natural maintenance, it is formed.
It belongs to a kind of bubble-shaped adiabatic material. The outstanding characteristic is that the closed foam holes inside the concrete can make concrete light and heat preservative and insulate.
Advantages of Foam Cement Insulation Layer
Using foam cement to make roof insulation and external wall insulation, instead of polystyrene (benzene board) and other insulation materials, has incomparable insulation performance and structural layer adhesion performance, it is convenient for construction, environmentally friendly, efficient, time-saving, etc.
The practice has proved that foam cement has properties of good thermal insulation, heat preservation, sound insulation, light load, better than other light solid plastic extruded perlite, ceramsite, asbestos products, and other thermal insulation materials, with simple operation, high degree of mechanization, saving time, labor characteristics. Foamed cement can be transported by mechanical vertical pipeline, which shortens the working hours and improves the efficiency by 6~10 times more than other ways.
Besides, using foam cement as roof thermal insulation material, makes the adhesion between the heat insulation layer and the floor surface greatly improved.
In the past, most floor heating construction uses benzene board as the insulation layer, which cannot be well combined with the original base surface, but there is no effective adhesion, resulting in delamination, empty drum, cracking, etc. Using foam cement body as the thermal insulation layer, the foam cement insulation layer and the original floor of the small uneven base surface filling, and can grasp, grasp the formation of strong adhesion. After construction, the original surface layer basically reaches the required level, which brings convenience to the next process and ensures the overall effect of uniform thickness of the surface layer.
In addition, after using the insulation layer made by the original benzene board for 1-2 years, due to a long time of trampling, it is gradually sinking after bearing force, and it can crack up to 5~10mm. It will also cause damage to the heating pipe and water leakage. Using foam cement insulation layer can avoid such phenomenon, because the compressive strength of foam cement is higher than benzene board, the advantage is very obvious.
At the same time, using the benzene plate as the insulation layer, while heating with the temperature rise, polystyrene (benzene plate) will release residual body benzene and alkylene, etc. Especially in winter heating, doors and windows are closed, air mobility is very poor, and toxic gas cannot be replaced, which will cause certain harm to the human body. The roofing insulation made of foamed cement is not. The cement foaming agent is made of vegetable fatty acids, and the synthetic body is water-soluble. It is a safe environmental health product and will not cause harm to the human body.
Through the research of cement foaming technology, in terms of the heat insulation, adhesion, bearing, environmental health, and other aspects, the foam cement insulation layer is greatly superior to other heat insulation materials, especially suitable for large projects, high floors of convenient, fast on-site production construction. The foam cement insulation layer can also reduce the height of the floor, from the point of view of building structure design, can reduce the cost, and save the cost of the project.
Suppliers of Concrete Additives
TRUNNANO is a reliable foaming agents supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.
If you are looking for high-quality CLC foaming agents, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)
We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
What is Foam Cement?
Foam cement is a kind of new light insulation material containing a large number of closed pores. It is made by firstly fully foaming the concrete foaming agent with mechanical methods, then evenly mixing the foam with the cement slurry, conducting cast-in-place construction, or mold forming through the pumping system of the foaming machine. Finally, after natural maintenance, it is formed.
It belongs to a kind of bubble-shaped adiabatic material. The outstanding characteristic is that the closed foam holes inside the concrete can make concrete light and heat preservative and insulate.
Advantages of Foam Cement
1. Thermal insulation: The thermal conductivity is 0.06-0.28W/(M.K), and the thermal resistance is about 10-20 times of ordinary concrete.
2. Lightweight: The dry volume density is 300-1600kg /M3, equivalent to about 1/5 ~ 1/8 of ordinary cement concrete,
3. It can reduce the overall load of the building.
4. Integrity: site casting construction, closely combined with the main project, no need to leave the boundary joint and ventilation pipe.
5. Low elastic shock absorption: The porosity of foamed cement makes it have a low elastic modulus, bringing the cement good absorption and dispersion.
6. Sound insulation: Foam cement contains a large number of independent bubbles, and is evenly distributed, realizing a sound absorption capacity of 0.09-0.19%,
7. It is 5 times ordinary concrete and has the function of effective sound insulation.
8. Compressive strength: The compressive strength is 0.6-25.0mpa.
9. Water resistance: Cast-in-place foam cement has small water absorption, relatively independent closed bubbles, and good integrity, so that it has a certain waterproof performance.
10. Durability: Same as the main engineering life.
11. Simple construction: Only need to use cement foaming machine can realize automatic operation, can achieve a vertical height of 200 meters distance
12. Off-delivery, the workload is 150-300m3 / working day.
13. Production processability: Foam cement can not only be produced into a variety of products in the factory, but also in on-site construction,
14. Directly cast into the roof, ground, and wall, and can be sawing, planing, nail, drilling, and other processing.
15. Environmental protection: The raw materials for foam cement are cement and foaming agent. The foaming agent is neutral without benzene, formaldehyde, and other harmful material.
16. Economical: low comprehensive cost.
Suppliers of Concrete Additives
TRUNNANO is a reliable foaming agents supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.
If you are looking for high-quality CLC foaming agents, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)
We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
Introduction to CLC Concrete Foaming Agent
There are two general cement-based foaming materials, one is chemical foaming, that is, through the chemical reaction of aluminum and other aerating agent and alkali in cement to produce gas; Another is physical foaming, through surfactants and mechanical stirring action to produce gas to join cement foaming. Relatively, chemical foaming is more stable and reliable, and more suitable for large-scale promotion.
CLC Physical Foaming Agent
Clc physical foaming agent or cellular lightweight concrete physical foaming agent is an additive which can reduce liquid surface tension and produce a large number of uniform and stable foam, in order to produce foam agent lightweight concrete.
The foaming agent is a kind of substance that can make its aqueous solution produce a lot of foam when mechanical force is introduced into the air. This kind of substance is the surfactant or surface-active substance. The essence of the foaming agent is its surface activity. Without surface activity, it cannot foam.
CLC Chemical Foaming Agent
Chemical foaming, that is, aluminum and other aerating agent reacts with the cement alkali to produce gas foaming.
Aluminum is a very active metal, which can react with water to replace hydrogen in the effluent and form strong alumina. The surface of aluminum particles exposed to air has been oxidized by oxygen in the air, forming an inert protective film of aluminum oxide, which prevents the contact of aluminum with water.
There is a certain amount of alkaline substances in aerated concrete slurries, such as calcium hydroxide and alumina, which can be dissolved in an alkaline solution to produce metaluminate. When the oxide film on the surface of the aluminum powder is dissolved, the aluminum reacts with water to replace the hydrogen in the effluent and form gelatinous aluminum hydroxide. But it, like alumina, prevents the water from touching the surface of the metal, preventing the reaction from proceeding. But aluminum hydroxide can also dissolve in an alkaline solution to form metaluminate. In this way, in an alkaline solution, the aluminum can continuously react with water to form hydrogen gas until it is used up. And hydrogen gas to approximately spherical bubbles, evenly distributed in the slurry, the slurry volume expansion, hardening to form porous silicate products. The aerating agent used in aerated concrete is mainly active aluminum powder. Of course, the active aluminum powder is specially treated. Because active aluminum powder in the natural environment will occur oxidation and lose activity.
Aerated concrete is a new building wall material made of cement, fly ash, lime, and foaming agent through mixed reaction and steam autoclaved. The pores evenly distributed inside make this material very light, and enable it to block sound, and it also has good heat insulation performance. Most of all, it's made of concrete, so it's very strong. Therefore, aerated concrete has the advantages of lightweight, high strength, heat preservation, sound insulation, and fire prevention.
Precautions When Using the Chemical Foaming Agent:
1. The foaming speed should be appropriate, the quality of concrete will be affected no matter if it is too fast or too slow.
2. The generated hydrogen bubbles should be small in diameter and evenly dispersed. Especially in the full volume of cement slurry pouring mold, it is necessary to disperse evenly to ensure the quality of the pouring mold.
3. The condensation and solidification of cement should not be affected when gas is generated. If the cement setting delays, it will lead to cement strength decline or produce an abnormal cement setting phenomenon.
Suppliers of Concrete Additives
TRUNNANO is a reliable foaming agents supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.
If you are looking for high-quality CLC foaming agents, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)
We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
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