The comparative advantages of wood and other landscape materials are: wood is beautiful, flexible, sensitive, light weight, environmental protection, which is recyclable natural material; using solar energy to grow, absorb and fix CO2, recyclable and biodegradable; wood products are easy to process, with moderate strength, good elasticity and durability. The advantages of wood can be described from its visual, tactile, humidity and other characteristics.

The vision of wood

The reason why wood can produce a sense of harmony visually is that it can absorb and reflect the ultraviolet rays in the sunlight, and then make the wood warm and comfortable.

Touch of wood

People's perception of material appearance is mainly determined by the thermal conductivity of the material. Materials with high thermal conductivity, such as concrete components, metal and other materials, will have a cool touch when touched. And wood this material, its thermal conductivity is moderate, people touch the feeling is very gentle.

3. Moisture control characteristics of wood

Wood has the characteristics of moisture control. When the ambient humidity changes, it has the characteristics of balancing moisture. The relative humidity of human living environment should adhere to 45% - 60%. Wood can absorb or discharge water according to the humidity to adjust the environmental humidity.

The following is to explain to you, commonly used wood common sense of field garden scene. Field landscape wood preservative treatment, pine and hardwood commonly used wood!

Preservative treatment of landscape wood

There are basically three aspects of anti-corrosion

1. There are ACQ and CCA preservatives in China for wood preservative treatment

In order to extend the service life of wood products in the wild environment and resist the parasitism and reproduction of termites, fungi and spores, as well as the parasitism and reproduction of migratory insects, it is necessary to immerse the wood in a vacuum state, immerse the agent in the wood arrangement cell by high pressure, and mix it with the cell fiber arrangement strictly, and the medicament is no longer released, and then completely change the wood The original "nutrients" in the wood fiber make the corrosion products have no survival history, thus avoiding the lack of wood decay in the field environment, natural wear-resistant and economic use.

As for the wood that needs to touch water, moisture and soil, in the face of harsh external environment, the general wood can not resist, and is extremely easy to decay. Because of the combination of fiber and chemical agent, the treated antiseptic material can no longer be used as material by mould, termite and other organisms. Therefore, the preservative effect is achieved, instead of using chemicals to kill termites and molds.

2. Wood Carbonization

Carbonized wood is a kind of wood with partial carbon characteristics, which is obtained by putting the wood in a relatively closed environment and treating it at high temperature (180-230 ℃).

Features:

1. Pure natural, pure green, pollution-free: in the whole process of wood treatment, only touch with steam and hot air, without adding any chemical reagent, adhering to the natural essence of wood.

2. Purification of air: carbonized wood is literally, dry wood, after treatment, has some special functions of carbon, can absorb impurities in the air, has the effect of filtering air and improving people's breathing environment.

3. Strong environmental stability: in the process of wood carbonization at high temperature, the hydrophilic factor inside the wood is recombined, which reduces the moisture absorption equilibrium point of wood, commonly known as "wet line". It is not simply affected by the surrounding environment, so it can be seen that it is suitable for all kinds of wood products.

4. Strong antiseptic: in the carbonization process of wood, the vast majority of fungi and all insects in the wood are killed in the high temperature air. At the same time, under the high temperature state, the nutrient components inside the wood undergo disorderly and violent chemical changes, which are degraded or recombined, which can make the surviving fungi die due to the loss of nutrients that adhere to life. That is to say, wood will not mildew after carbonization.

5. The color of wood is rich and the color of single tree species is changed. During the carbonization process, the interior and exterior of the wood are heated uniformly. Under the effect of high temperature, physical color changes occur. The color of wood is deepened, which can be compared with some precious tropical and tropical woods to improve the overall taste of the environment.

6. Simple coating and protection: the surface of carbonized wood has no oil-based components such as resin, so it is simple to finish. There is no surface fuzz during processing. So the installation and protection are quite simple.

Using attention

1. Carbonized wood should not be used in the environment of touching soil and water. 2. The nail holding power of carbonized wood is lower than that of untreated wood. Therefore, it is recommended to use the device of drilling and then nailing to reduce and avoid wood cracking. 3. When carbonized wood is used outdoors, it is recommended to use anti ultraviolet wood coating to prevent wood from fading after a long time.

3. Natural antiseptic wood

Natural preservative wood contains most of the hardwood, Of course, part of the preservative effect is only general. It can also be used for chemical preservative treatment or high-pressure liposuction treatment (such as mahogany, teak, pineapple, Balau, phellodendron, rosewood, African hardwood, etc.) and a kind of natural preservative pine, red cedar (this kind of wood is only produced in western United States and Canada. It is a light commercial softwood with high natural preservative grade and can be used in indoor and outdoor, It has natural aroma, sound insulation and heat insulation, which is widely used in advanced projects.

Common landscape wood

Pine:

1. Pinus sylvestris var. mongolica

Pinus sylvestris var. mongolica is mainly produced in Russia. It is a kind of pine cork. It can directly use high-pressure penetration method to do full section anticorrosion treatment. It has fine raw materials, straight and even lines, and excellent mechanical performance. At present, it is widely used in domestic projects with high cost performance.

Scope of application: plank road, pavilion and courtyard channel, pavilions and pavilions, waterside corridor, flower rack fence, footpath wharf, children's play area, flower terrace, dustbin, outdoor furniture, outdoor environment, hydrophilic environment, indoor and outdoor structure, etc.

2. Southern pine of the United States -- artificial antiseptic wood

Pinus australis, also known as southern Pinus koraiensis, is the name of four tree species, i.e. long leaf pine, short leaf pine, slash pine and loblolly pine. It is good at the vast area of southern United States.

Its characteristics are similar to that of Pinus sylvestris var. mongolica, but the lines are straight and uneven. It claims that the king of cork is the material of strength and toughness in cork. It is known as the top structure timber in the world. It is actually a pine with good comprehensive quality.

The southern pine species of the United States belong to the structural use of strong raw materials, but not toughness, a variety of uses of wood. Because of its special cell placement, Pinus densiflora is also a good tree species for pressure treatment of antiseptic wood.

Features:

1. Large sales and many uses: the southern pine of the United States is an antiseptic wood widely used in the world every year;

2. It has clear and deep wood texture;

3. High strength and excellent structural strength: American southern pine has special strength and structural strength, and has the reputation of 'King of international cork' in wood construction profession. In order to meet the requirements of the actual bending resistance of the timber, the cost can be greatly reduced by using the super bending strength in the planning.

3. High wear resistance: American pine is often used in floor board, balcony, railway channel and container floor, because it can not only wear less, but also prevent splitting;

4. High retention of wood preservatives the ability of Pinus densiflora to withstand high-pressure injection of chemicals can retain 20lb per cubic foot. Its high permeability makes the pine free from water, decay, termites and marine organisms, and the preservation can last for 50 years

5. "Boring" is the standard quality requirement, and the moisture content of wood less than 2 inches (2 ') must be reduced to 19% in accordance with the American Southern Pine grading rules. Proper dryness can determine the shortening rate, stability and applicability of wood.

6. Height screw and nail holding force is one of the characteristics of American pines

Scope of application: plank road, pavilion and courtyard channel, pavilions and pavilions, waterside corridor, flower rack fence, footpath wharf, children's play area, flower terrace, dustbin, outdoor furniture, outdoor environment, hydrophilic environment, indoor and outdoor structure, etc.

3. Finnish wood (Pinus norvegensis) - artificial antiseptic wood

Finnish wood, as it is often said, is actually a kind of antiseptic wood. The primary raw material is Pinus silvestris, which is mainly grown in Finland. This is a place where high-quality timber can grow internationally. Abnormally cold and long winters allow trees to grow in about 100 days of the year, slowly and evenly growing to make good wood.

The wood is strong, the lines are symmetrical and vertical, and the tree knots are small and few. Nordic wood with low resin and natural grain is the first choice for many occupations in the past few centuries, known as "the green diamond of northern Europe". Finland is a country with high forest coverage in northern Europe, ranking the second in the world. It is also a country that imported the antiseptic Pinus densiflora into China very early, so people used to call it "Finnish wood".

Features:

1. The structure of Pinus densiflora is very good, the grain is even and fine, and the quality is high. Pinus densiflora in northern Europe is good at cold regions. It is a slow-growing tree species with tight wood and low lipid content. Its wood fiber lines and knots are small, and its strength is higher than that of most cork trees. It belongs to the field antiseptic wood which is artificially antiseptic wood, treated with ACQ preservative under pressure and kdat (secondary kiln drying).

2. After vacuum degreasing, the water-soluble preservative ACQ is poured into the sealed high-pressure warehouse to immerse the medicine juice into the deep cells of the wood, and then the wood has the functions of anti fungi, anti-corrosion, anti termite and other parasites, with high density, high strength, good nail holding power, clear lines and decorative effect.

Scope of application: landscape architecture, outdoor floor, hydrophilic wharf and wooden bridge, etc.

. Chinese fir

Douglas fir is mainly produced in the United States and Canada, and domestic Douglas fir is mainly imported from the United States. Douglas fir is famous internationally for its excellent strength to weight ratio, and its structural function is also abnormally excellent. The grain of the wood products is vertical and beautiful. When there are large timber beams, long span or special shaped arches, it is often used as a timber variety. When super large timber beams and trusses are needed, the function and appearance of Glulam of Douglas fir are also very reliable.

5. SPF Canadian plate

SPF board is composed of four kinds of tree species: white spruce, ingelmann spruce, Xiaogan pine and alpine hemlock. Because of their similar physical characteristics, they are packaged and implemented in the market. SPF tree species grow slowly in the cold climate of Canada, with uniform and vertical grain, smooth texture, small scar, high strength, good stability, easy processing and antiseptic treatment. Canada has a vast forest, so the supply is sufficient, which is the main timber promoted by the Canadian government in China.

6. Canadian Red Cedar

The sapwood of red cedar is thin and light yellow. The heartwood color ranges from light grass to pink to dark brown.

Raw material: cypress, origin: Canada

Thermal conductivity: low, grade: excellent,

Style: North America.

Special function: corrosion resistance

Color: Red

Species: cork

Features:

1. The wood grain is vertical, non porous and has a common fragrance.

2. It has low density (apparent density: 0.38), small shortening and excellent heat insulation value. Red cedar contains natural preservatives, which can prevent moisture, corrosion and insects. Resistant to weather conditions and decay, very suitable for external applications requiring durability and standard stability. The stability of red cedar is twice that of common cork.

3. The stability of Pinus koraiensis is due to low density and small shortening. The wood should be placed flat and vertical, and be well fastened with fasteners.

4. The wood produced by red cedar is long in length, light in weight, fine in grain, vertical in texture, and easy to cut, sawn and nailed with common things.

Hardwood:

1. Pineapple is also called Indian eggplant

The heartwood is iron brown to purplish brown. The sapwood is pink white or light yellowish brown and reddish. It has thick structure, interweaved lines, high density, high strength, rich grease, strong corrosion resistance and resistance to termite damage. Because the raw material is stable, the drying shrinkage is small, the surface is smooth and the color is beautiful. It can be used in high-grade furniture instead of mahogany It has high strength, good wear resistance and strong natural corrosion resistance.

Now there are also some pineapples produced in Africa. The stability is a little worse than that of Indonesia. The appearance is almost the same. We should pay attention to the price. There are also claims that the material of little pineapple is also called longan and door lattice. The appearance is very similar, but the raw materials are quite different. In a word, it is accompanied by big money and fake goods.

Scope of application: scene floor, ship, bridge, wharf, joinery, furniture, etc

2. Camphor wood

Camphor wood is produced in Indonesia and Malaysia, with camphor flavor and can persist for many years. The heartwood is rose, orange red or reddish brown, and the color gradually deepens with time. It has fine structure, straight lines, stable raw materials, and Camphor Fragrance on the cut surface.

Scope of application: valuable furniture, external wall hanging board, floor, joinery, etc., and other hardwood deployment application effect is very good.

3. Teak

Teak is mainly produced in Myanmar, Thailand, India and Indonesia. The sapwood is yellowish brown and reddish, the heartwood is light brown, the growth ring is remarkable, the sapwood is glossy, the density is medium, the hardness is medium, the quality is good and stable, the sapwood has the ability of antisepsis and insect prevention, so it is a good natural antiseptic wood. In recent years, some African made big American pigeonpeas are very similar to teak in terms of features and advantages, and their prices are quite different. There are also other counterfeit materials. If you want to use them, you should pay more attention to them.

Scope of application: valuable furniture, floor, high-grade car board, yacht deck, experimental equipment, ideal data, the price is more expensive.

4. Eucalyptus salicis

Eucalyptus salicifolia is divided into white and red eucalyptus, light to medium brown, some yellowish, and can gradually change to silver gray and bronze color over a long time. Its wood structure is thick, the grain is straight or the inclined plane is interwoven, but it is boring and processing is difficult. There are a little warping and cracking phenomenon in the process of boring, and the antiseptic function is general, so antiseptic treatment should be done. Its material is strong, strong and resistant, and has good shock function. The price of hardwood is low, but its function is better than that of pine.

Scope of application: different varieties and different specific uses. Landscape architecture, interior and exterior scenes, furniture and building materials are used.

5. It is also called Huangzao (huangbalau)

Balau is mainly produced in Indonesia and Malaysia. It is a natural environment-friendly antiseptic wood with strong weather resistance, long service cycle, fine grain, no knots, high wear resistance and smooth surface. It's more advanced hardwood

Scope of application: building components, bridges, sleepers, poles, shipbuilding, load-bearing floor, load-bearing furniture, joinery and door and window frames, etc.; because of the strong corrosion resistance of wood, it is suitable for occasions with poor conditions.

6. Yinkoushu

The material is mainly produced in Papua New Guinea. The texture of the material is interwoven, the structure is thick and uniform, the hardness is high, the strength is high, the weather resistance is wear-resistant, the pattern is uniform, and the surface is glossy. It can be used in outdoor scene, and the effect is better through anti-corrosion treatment.

Scope of application: floor, plywood, furniture, shipbuilding, sleeper, housing construction, sliced veneer, etc.

Do you know all the above? That's it for today. We'll see you next time.