Foam cement board? Foam concrete?

With its unparalleled thermal insulation performance and structural layer adhesion performance, as well as the advantages of convenient construction, environmental protection, time saving, efficiency improvement and many other functions, foamed cement will definitely replace polystyrene (styrene board), etc. Other insulation materials. Below, the editor of Guangcai will introduce to you how to use it and the precautions for use. You may wish to learn about it.
What is Foamed Cement Board? System products consisting of cement mortar and anchor bolts used when necessary, plastering mortar, alkali-resistant mesh cloth and facing layer.

Foamed cement insulation board, also known as foam concrete board, is made of sulphoaluminate cement, fly ash or industrial waste residue as raw materials, adding foaming agent, special fiber, etc., compounded, stirred, and foamed to form , and then cured into a cement-based lightweight porous inorganic Class A insulation board.
Advantages of foamed cement board

Foamed cement has good thermal insulation, thermal insulation, sound insulation, light load-bearing and other properties, and is superior to other lightweight solid plastic expanded perlite, ceramsite, and asbestos products and other insulation materials. It is easy to operate, has a high degree of mechanization, saves time and labor, and has mechanical vertical pipeline transportation, which greatly improves the progress of the project. It can increase the work efficiency by 5-8 times compared with other methods.

The use of foamed cement as floor heating insulation material mainly solves the problem of greatly improving the bonding and adhesion between the insulation layer and the floor base. In the past, most floor heating construction used benzene boards for insulation. The layer cannot be well combined with the original base surface, and it has no effective adhesion, causing delamination, hollowing, cracking and other disadvantages. The foamed cement body is used as the thermal insulation layer, so that the foamed cement thermal insulation layer can fill in the small uneven base surface of the original floor, and can be firmly grasped to form a strong adhesion performance. After construction, the original surface layer can be basically leveled, which brings convenience to the next process of surface layer construction and ensures that the thickness of the surface layer is uniform to achieve the overall effect.

Environmentally friendly. Use styrene board as the insulation layer. When heating, polystyrene (styrene board) will increase as the temperature rises, and the residual benzene and hydrocarbons will increase accordingly. Especially during winter heating, the doors and windows must be tightly closed. The air flow is very poor and the indoor air cannot be replaced, which is bound to cause certain harm to the human body. This is not the case when using foamed cement. There is no need to discuss the cement. The raw material carrier of the foaming agent is animal and plant fatty acids, and the composite is water-soluble. Therefore, it is a safe, environmentally friendly and sanitary product and will not cause harm to the human body. This is also an important selection factor that people pay attention to.

The application of cement foam board
Whether it is thermal insulation, adhesion, load-bearing, environmental protection and sanitation, it is greatly superior to other thermal insulation materials. It is especially suitable for large projects and high floors. Convenient and fast on-site production and construction.

Especially after the floor heating paving construction is completed, if the mortar machine pipe is used to transport mortar and concrete, it has great advantages as a filling layer. It can eliminate the need for cumbersome and cumbersome tasks such as manual loading and unloading of mixing and lifting hopper trucks. Save labor, manpower and working hours, and improve project progress. It’s really more, faster, better and more economical, why not enjoy it.

Characteristics of cement foam board
1. Lightweight: dry bulk density is 300-1600KG/M3, which is equivalent to about 1/5 to 1/8 of ordinary cement concrete, which can reduce the overall building load.

2. Thermal insulation and fire resistance: The thermal conductivity is 0.06-0.28W/(M.K), and the thermal resistance is about 10-20 times that of ordinary concrete; the main raw material of foamed cement is Cement, cement is an inorganic material that is completely fireproof.

3. Water resistance: Cast-in-situ foamed cement has low water absorption, relatively independent closed bubbles and good integrity, which makes it have certain waterproof properties.

4. Low elasticity and shock absorption: The porosity of foamed cement gives it a low elastic modulus, which makes it good at absorbing and dispersing impact loads.

5. Sound insulation: Foamed cement contains a large number of independent bubbles, which are evenly distributed. The sound absorption capacity is 0.09-0.19%, which is 5 times that of ordinary concrete. It has the function of effective sound insulation. .

Tips for purchasing high-quality cement foam boards
1. Look at the weight and strength. The board is fragile. If the weight is very light, it means that the density has not reached the standard and the compression ratio is not enough, so the bulk density is low. Those with a bulk density below 220 will not reach A1 level fire protection, but they can be made into low-level fireproof boards; if the density feels very high , the weight is also moderate, which means that the bonding strength is too low, indicating that the quality of the cement is not good. The board can pass the test only if the comprehensive effects of thickness/bulk weight/compression ratio/binder all pass the test.

2. Look at the adhesive selection. Generally speaking, the vast majority of binders used are water glass or magnesium oxide brine. Cement foam boards made of water glass as a binder will disintegrate after being soaked in normal temperature water for 30 minutes. It is better to use water glass with a high friction number, and a special waterproofing agent with good water resistance. It won’t matter for a day; cement foam boards made of magnesium oxide brine as a binder, if the magnesium oxide selected is highly active, expensive, and the process technology is passed, it will not be so easy to break and water-resistant. sexIt's also very good. The water won't boil after 30 minutes. Even if you continue to soak it, problems will occur, and halogenation will occur.

3. Smell the smell of the board. If the smell of cement foam board has a pungent smell, it means that the binder used has added urea-formaldehyde glue such as bone glue or cheap 108 glue in order to increase the strength. This will not meet environmental protection requirements.

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