Foam concrete used as sound-absorbing and energy-absorbing material
Oil futures tumbled more than $5 a barrel on news that the Biden administration is considering releasing about 1 million barrels a day from the U.S. Strategic Petroleum Reserve (SPR) for several months to cool surging crude prices.
Brent crude futures were down $4.71, or 4.2 percent, at $108.58 a barrel by 0035 GMT. U.S. West Texas Intermediate futures fell $5.45, or 5 percent, to $102.74 a barrel.
At an earlier time, gasoline prices had already reached record levels because of the Russia-Ukraine conflict.
The prices of other commodities like the concrete foaming agent are also expected to be volatile.
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.
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.
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In a recent interview with Izvestia, Russian Federation Council Chairman Matviyenko said that Russia is open to dialogue with the West based on mutual respect, but the opportunity to resume dialogue will only come after the end of special military operations.
Matviyenko also noted that Europe currently lacks politicians who can make independent decisions. She said the EU's strategy to wean itself off Russian energy by 2027 would be costly, with Russia supplying 40 percent of Europe's gas, 27 percent of its oil, and 46 percent of its coal, and was essentially "anti-European" and a "tax" on US global dominance.
On Sweden's and Finland's plans to join NATO, Matviyenko said Russia will take corresponding measures if NATO weapons and equipment appear in the two countries, and Russia is capable of guaranteeing its own security.
Besides, speaking by video at an international conference, Ukraine's minister of agricultural policy and Food, said the country's grain concrete foaming agent are expected to continue to be influenced by international situations.