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Used for anti-electromagnetic radiation function

Foam concrete is an excellent electromagnetic shielding material, which can absorb and eliminate electromagnetic waves. Recently, it began to be used in military and civil buildings with large electromagnetic radiation, and its products are anti-radiation panels, which are in great demand, especially in the military industry.

Used for fire prevention function

1.  Fire door

Fire door is a large lifting door set up to cut off the spread of fire in middle and high-rise buildings. it is an indispensable fire prevention structure for building codes, and the development prospect of foam concrete fire door core is very good.

2. Fireproof board

Foamed fireproof board is more fireproof, and the density after foaming is reduced to 800 μ m / m3, which is light and outstanding, and has a great market advantage.

Used for impervious and waterproof function

Closed-cell foam concrete has hydrophobicity, and the dripping water shows lotus leaf dew effect, so its impermeability and waterproof are excellent. This kind of foamed concrete has two major application markets:

1. Building waterproofing and engineering waterproofing

Pouring or laying foam concrete in all parts of the building that need to be waterproof, such as roofs, basements, bathrooms, etc., can save waterproofing agents, achieve permanent waterproofing, and overcome the shortcomings that waterproof coatings are easy to fall off and fail. Using it instead of waterproof material has the advantages of low cost, long service life and more competitive. Foam concrete can be used in waterproof and impermeable aspects of water conservancy projects, such as canals, ponds, towers, swimming pools, underground military projects, tunnels, embankments, fish ponds, artificial lakes, etc., saving all waterproof materials. It is not only a structural material, but also a waterproof material has great advantages.

2. Chloride resistance in underground and underwater engineering

In the soil or water with high chloride ion content, the bases, piles and bridge piers of concrete projects may be damaged by chloride ions. If a protective layer of foam concrete is laid or poured on the outside of these engineering structures, because the foam concrete is impervious, the chloride ion will not be carried by water to erode the concrete.

Used for lightweight density reduction filling function

There are dozens of applications of road backfilling, such as approach bridge filling, soft foundation section filling, abutment back filling, slope subgrade filling, road widening filling, permafrost zone foundation filling, sidewalk filling on both sides of bridge deck, karst cover filling, anti-freezing and thermal insulation pouring, bridge pier foundation pit backfilling and so on. The application in this area is very developed in Japan, and is also widely used in the United States and Europe.

The construction backfill has been applied, such as compensation foundation, top cover of basement and underground square, lightweight floor cushion and so on. Among them, the floor cushion is the largest, which is mainly used for pouring indoor ground pipelines (television, air conditioning, computer, lighting, audio, telephone, etc.). The original use of coke slag cushion has been changed to foam concrete.

Used as lightweight decorative materials and garden products.

The application in this area has high added value, and it is one of the application fields with large profits of foamed concrete, and it has a large market, many products and few producers, so it is very promising.

1. lightweight indoor decorations

The light quality of foam concrete makes it very suitable for the production of imitation gold and silver imitation antique murals, pendants, art decoration boards, interior furnishings and so on. These products were originally made of gypsum with poor strength, and then changed to resin and magnesite, but they are heavy.

2. lightweight decorative tiles for exterior walls

The products that have been developed in this area are: marble or granite facing foam concrete decoration exterior wall hanging board, ceramic tile (3') facing foam concrete hanging board, art concrete facing foam concrete hanging board, aluminum-plastic board facing foam concrete hanging board.

3. lightweight garden products

This kind of products mainly include: imitation wood imitation bamboo grape rack, imitation wood imitation bamboo building components, imitation wood imitation stone open-air table stool, imitation wood imitation bridge stone, imitation wood imitation stone railing, imitation wood imitation stone pond, breathable art high-grade flowerpot, microporous rockery and rockery, landscape lotus lantern that can float on the water surface, simulated Wang lotus and lotus leaves, floating rockery, etc.

Concrete Additives Supplier

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.

Lightweight foam concrete construction precautions

Foam concrete with different strengths shall be constructed in strict accordance with the design requirements. The anti-seepage geomembrane on the top of the foamed concrete subgrade shall be laid under the metal mesh, and the lap joint shall be thermally welded, and the lap width shall not be less than 10cm.

When laying, it should be flattened and tightened to avoid local rolling up. If necessary, U-shaped nails can be used for anchoring. When laying the metal mesh, U-shaped nails should be used for anchoring, the longitudinal anchorage spacing is 2m, and the transverse anchorage spacing is 1.0m. The plane position of the metal mesh should be overlapped and overlapped, the width of the overlap should not be less than 5cm, and the overlap should be bound with plastic buckles and anchored with U-shaped nails.

Before the lightweight concrete is poured, according to the boundary conditions of the construction site, the pouring area and the pouring layer are first divided, and the base is checked to ensure that the base is free of debris and water, and the base elevation meets the design requirements and should meet the following requirements:

1) The top surface area of a single pouring area should not exceed 400m2.

2) The length in the long axis direction of a single pouring area should not exceed 20m.

3) 1.8cm thick wooden plywood is used to support the spacing and joints in the adjacent pouring area. The wooden plywood is a temporary support template and is also used as a deformation joint filling and must not be removed.

4) The thickness of the single-layer pouring layer should be controlled within the range of 0.3-1.0m.

5) The thickness of 0.8m at the top of the lightweight foam concrete subgrade must be used as an independent single-layer pouring layer, and the layer should be poured at one time in each pouring area.

Construction Control Points

1) For the adjacent pouring layers in the same section, when the temperature during the construction period is not lower than 15℃, the shortest pouring interval can be controlled by 8 hours; otherwise, the pouring interval should not be less than 12 hours.

2) The pouring construction time of the pouring layer in a single pouring area of Lightweight concrete should be controlled within 2 hours.

3) It should be poured from one end to the other end along the long axis of the pouring area; if more than one pouring pipe is used for pouring, it can be poured side by side from one end, or the diagonal pouring method can be used.

4) During the pouring process, when the pouring pipe needs to be moved, it should be moved back and forth along the direction in which the pouring pipe is placed, and it is not appropriate to move the pouring pipe left and right; Move to the soil surface.

5) During the pouring process, the discharge port of the pouring pipe should be placed below the current pouring surface as much as possible; in other situations such as the surface being leveled, the distance between the discharge port of the pouring pipe and the current pouring surface should not be higher than 1.5m.

Care and Maintenance

After the top surface of the lightweight concrete pouring area is poured to the design elevation, the surface should be covered with plastic film to moisturise and maintain the light soil roadbed; or the non-woven geotextile covering and watering should be used for maintenance. The curing time is not less than 7 days. 

Before the top of the light soil subgrade is filled with soil, it is strictly forbidden to drive construction machinery on it; if it is unavoidable in some areas, a temporary protective layer with a thickness of not less than 50cm should be laid at a suitable position or covered with steel plates as a temporary access road for Construction machinery travels.

Connection with other processes

The top improved soil must be constructed when the maintenance strength of Lightweight Concrete reaches 1.5MPa under the same conditions. During construction, it is strictly forbidden for large machinery such as dump trucks, road rollers, and bulldozers to directly walk on the top surface of the lightweight soil. Paving and rolling are carried out in the forward way of leveling and side-rolling, that is, the unloading truck and road roller should unload and walk at the rear end of the leveling machine.

During the rainy season, special measures should be taken for temporary waterproofing and drainage, focusing on the prevention of soil erosion. Measures such as film covering and temporary drainage ditch should be adopted to avoid slope erosion and prevent a large amount of water and soil from flowing to the lower light soil pouring surface for pollution. Light soil.

Foam Concrete additives Supplier

TRUNNANO is a reliable concrete concrete additives supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality concrete concrete additives, 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.

Before the construction of foam lightweight soil, it is necessary to ensure that the foundation pit is level and free of water accumulation.

Sound-absorption function

The open-cell foam concrete is an excellent sound absorption material, while the closed-cell foam concrete is an excellent sound insulation material.

Materials with an average sound absorption coefficient greater than 0.2 are usually called sound absorption materials. There are two kinds of traditional products: fiber (rock mineral wool board, etc.) and porous (foam and foam glass, etc.). Foam concrete is a new type of porous sound absorption material, and its average sound absorption coefficient is 0.8-1.4, which is a strong sound absorption material and can reach the first or second grade standard. It has great market and competitive advantages in the following aspects.

1.     Outdoor sound-absorbing materials (road, railway sound absorption barriers)

Foam concrete outdoor sound absorption material market is mainly the sound absorption barriers on both sides of highways and railways. At present, the sound absorption barriers used in roads are mainly sawdust cement board and foam glass board. The former has a low sound absorption coefficient, which can not meet the needs of high-speed railway, and is not beautiful, while the price of the latter is too high. The foam concrete has good sound absorption performance and can meet the sound absorption requirements of any road, but the price is very low.

2.     Sound-absorbing materials of indoor walls

Indoor sound absorption has sound absorption ceiling and sound absorption wall. Foam concrete has a great market advantage in wall sound absorption. Compared with rock mineral wool and other fiber sound absorption board, it does not have the disadvantage of itching all over the body during cutting and installation, and the strength is good, and the price is also low. In the subway wall, this product will have a big market, in large shopping malls, station waiting rooms, theatres, conference halls and other building walls also have a huge market.

3.     Sound insulation sandwich composite board (partition sheet)

The existing indoor partition is in the wooden keel on both sides of the installation of 5 "10" paper plasterboard, the wall is empty, not sound insulation, not strong, can not be nailed. The foam concrete composite sound insulation board is 5 inches thick and occupies a small space, the two surfaces are colored decorative layers, and the middle is 4 inches thick foam concrete, which has both isolation and sound insulation effect, and is twice as fast as installation, so it is welcomed by consumers.

Energy-absorption function

1. Used in energy absorption in airport protection.

Foam concrete has very strong impact resistance. Ordinary concrete can be broken with a sledgehammer, but it is difficult to break foam concrete. Making use of its energy absorption, a number of high value-added products have been developed, such as airport safety protection foam block, racing track safety protection foam block, road accident prone zone safety protection foam block and so on. When an aircraft or a car rushes out of control out of the runway or road, it enters the foam block protective belt, which stagnates and protects the aircraft or vehicle intact due to the impact absorption performance of the foam block.

2. Used in shooting and explosion energy absorption protection.

Foam concrete has a good absorption effect on bullet shock wave and explosion shock wave, which can greatly reduce the destructive power of shooting and explosion. In terms of anti-explosion, there are two types of products of development significance and civilian use.

Concrete Additives Supplier

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.

Controlling the settlement of ballastless track subgrade in special soils is a scientific problem that has always existed in the construction and operation of high-speed railways, mainly due to the consolidation and settlement of ground soil, which is caused by the additional stress caused by heavy loads.

In order to reduce the subgrade weight and additional stress, lightweight foamed concrete can be used as subgrade filler to control subgrade settlement in special soil areas. However, it is unclear whether ballastless track subgrades filled with lightweight foam concrete have long-term dynamic stability under cyclic loading.

To solve this problem, Luoyang Tongrun conducted compressive strength and dynamic triaxial tests to analyze the static and dynamic strength of lightweight foamed concrete. A large subgrade model filled with lightweight foam concrete with a target density of 650 kg/m³ was then built to determine its long-term performance under cyclic dynamic loading.

The results show that the strength of the lightweight foamed concrete with the target density of 500-800 kg/m³ can meet the requirements of the static and dynamic conditions of the ballastless track subgrade, and the ballastless track subgrade with the target density of the lightweight foamed concrete.

When a foam concrete dynamic buffer layer of 650 kg/m³ with a thickness of 0.5 m is set between the lightweight foam concrete layer and the foundation slab, it has good long-term dynamic stability under cyclic dynamic loads.

Foam Concrete additives Supplier

TRUNNANO is a reliable concrete concrete additives supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality concrete concrete additives, 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.