When it comes to bamboo, it is easy to associate it with words such as integrity, poetry, and coolness. In the Song Dynasty, the great writer Su Dongpo said that he would rather eat no meat and not live without bamboo, reflecting his feelings for bamboo. In foreign countries, "Bamboo Wind" has also become popular. According to the British Broadcasting Corporation (BBC) reported on July 1, Chinese bamboo products are increasingly entering the EU market, and many European countries have appeared in the living room.
The fastest growing plant on earth
Bamboo is neither a herbaceous nor a woody plant, but is a self-contained, perennial lignified plant of the grass family. About 1,400 kinds of bamboo grow in different climates and natural environments. But most bamboo products are made from bamboo, which is widely grown in China and other parts of Asia. Bamboo is the fastest growing plant on the planet. American botanist David Farrell said that the highest growth rate of bamboo is 1.21 meters high in one day. The maximum growth rate in special periods after raining can exceed 1 m / h, 3.5 times faster than the fastest growing trees.
Due to its fast growth and abundant resources, bamboo has been used as a natural building material for a long time. According to historical records, in the Han Dynasty, the craftsmen of the Han Dynasty used the bamboo for the Hanwu Emperor to build the Ganquan Palace (located in the territory of Suihua County, Shaanxi Province). The southwestern ethnic minorities in China, such as the Yi people, still live in bamboo buildings, and the green bamboo trees cover the bamboo towers, full of poetry and painting. However, in traditional buildings, bamboo is often used as a raw material for construction, such as other woods, after simple treatment or untreated. The unique strength, bending resistance and flexibility of bamboo are not fully utilized.
"Plant steel" in the construction industry
Thanks to the development of modern architectural concepts and engineering techniques, the advantages of bamboo have been further developed. American journalist Michel Nieus wrote "The Rapid Development of Bamboo" in the June issue of Scientific American magazine, saying that many bamboo products can be seen in many large furniture supermarkets in the United States. - Bamboo flooring, cabinets, etc. The famous Clinton Presidential Center in Little Rock, Arkansas, incorporates a number of green design concepts where people can see bamboo ceilings and 7,000 square meters of bamboo flooring. In the past, such a "big head" bamboo structure was hard to see.
In recent years, large buildings made of bamboo have been appearing all over the world. In January last year, the world's largest bamboo-built building was unveiled in Mexico City, which is the “nomadic museumâ€. This is a temporary building covering an area of ​​5,130 square meters, which is almost half the size of the central square of Mexico City. The Carrefour Group in France built a supermarket in Colombia with bamboo. It covers an area of ​​2,000 square meters and has a 16-meter-high dome made of bamboo. Using bamboo instead of metal to build a dome can not only ensure the lighting effect, but also reduce the cost of installing air conditioning equipment.
Colombian architect Simon Velez discovered 20 years ago that the natural toughness and flexibility of the bamboo can be exploited with a small amount of screws at the joints of the Colombian specialty. This kind of bamboo can be used to build a church dome that can carry 10 tons of weight. Bamboo stems need to be treated with boric acid to avoid attack by termites. The 58-year-old Vélez used this new technology in a number of architectural designs. He said: "Any building made of steel can be done quickly with bamboo and is inexpensive." German architect Jorge Kutam, built a 50-meter-long bamboo bridge in Bali, Indonesia, is strong enough to carry trucks. Many people call bamboo "plant steel" because it is much lighter than real steel and is five times more solid than cement.
Bamboo features you don't know
Because the growth environment is not demanding, and the growth rate is fast, upright and straight, and the seasons are evergreen, bamboo can be seen in many places in the country and the city. Many people often use bamboo mats, bamboo mats and other bamboo products in their daily lives, but they don't know much about bamboo. The US Bamboo Craft website gives the characteristics of bamboo and bamboo products from the following four alternative perspectives.
1 burning sounds
Some people who have seen bamboo burning or treated bamboo products may know that when the bamboo burns, it will make a "beep" sound, like a firecracker, strange and scary. Many people don't understand why this is because the air in the bamboo sticks swells when heated, so you need to pay attention to safety when burning bamboo, because the splashed Mars or broken bamboo can hurt people.
2 bamboo products are not completely "green"
Many merchants selling bamboo products will use "natural" and "non-toxic" as promotional tools, but they ignore a problem. Bamboo products are not equal to bamboo, but go through a series of processes. The next few steps in the processing of bamboo products - turning bamboo into the processing of flooring, fabrics or other products, there are environmental hazards in the middle. For example, glue that sticks bamboo strips to bamboo may contain formaldehyde, and dyes used for dyeing may contain heavy metals.
3 fight global warming
Compared with trees, bamboo grows rapidly and absorbs twice as much carbon dioxide as ordinary trees. The US Time magazine has listed 51 best ways to prevent global warming, and bamboo is one of them. "Time" commented: "Bamboo can grow into a beautiful natural wall, because bamboo grows fast, can absorb more carbon dioxide, and it is very beneficial to fight global warming."
4 good seismic performance
Bamboo has the advantages of high strength, high rigidity (ie strong bending resistance), light weight, etc., and its seismic resistance is very good. After the Wenchuan earthquake, many model houses in Sichuan Wolong, Dujiangyan and other areas were made of bamboo. In 1991, an earthquake measuring 7.7 on the Richter scale occurred in Costa Rica. A large number of brick and reinforced concrete buildings collapsed, but more than 20 buildings built with bamboo were safe and sound, showing their good seismic performance.
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