Potential Availability of Aluminium for Urban Construction

Urban Construction Public Auxiliary Facilities: In addition to the houses and pavilions, platforms, buildings, and other public construction projects, such as lampposts, street lamps, various station CARDS, guardrails, flyovers, etc.

Aluminum resources, reserves (content) in the earth’s crust is more than 8% of the total quality of the earth’s crust, even today with the high-quality bauxite for another four hundred and fifty years may be depleted, but there are other minerals and social savings of waste aluminum, and aluminum in pulverized coal, and the water contained in aluminum. So don’t worry about the resources of aluminum. Of course, we should cherish and cherish the existing resources and make the best use of them.

In urban construction and auxiliary facilities, light pole, street light equipment, garden lamp, landscape lamp, lawn lamp, probe rod can be made of aluminum alloy, and guardrail, bus station, chairs, trash can, overpass, intelligent, etc. They can also be used for aluminum alloy manufacture.

Aluminum has a characteristic of small density, which is only 2700kg/m³, which is only 1/3 of the steel and cast iron, which is very beneficial to the transportation and installation of the lamp pole, which is conducive to reducing the construction cost and improving installation safety. The processing of aluminum is good, and the light bar is easy to be pressed and machined, which is very beneficial to reduce the production cost.

In the industrial atmosphere and ocean environment has a strong corrosion resistance, in five hundred and sixty, serving almost no corrosion, do not produce corrosion products, environmentally friendly, after the expiration of service still can recycle all, is a real green material; Excellent surface performance, can be natural drawing wire; By surface treatment, it can also be oxidized with various colors, such as black, dark brown, medium brown, light brown, natural, and sprayed with black, dark brown, white, dark green, etc. Excellent low-temperature performance, suitable for any temperature from north to the South Pole, no low-temperature brittleness, plasticity and strength properties are as the temperature rise, but most of the steel has low-temperature brittleness, temperature drop, although strength has increased, but the plastic is dropped substantially, even in cold winter will be broken; Aluminum alloy lamp service expires can all be recycled, not only realize the value can be up to 85% of the price of primary aluminum smelting and regeneration – casting the total energy consumption of just 10.4 GJ/tAl, is only the original aluminum extracting 4.9% of the total energy consumption of 213 GJ/tAl, and burning loss is not big, in the advanced double chamber furnace smelting just 2% or so;It is easy to insert and install. But the cost of aluminium alloy lamp pole is high, it is its inadequacy.

Lamp poles can be made of a variety of materials: cement, cast iron, steel, glass, etc. Cement light pole of low cost, no need surface treatment, it is the biggest advantage, but is very heavy, bring some disadvantages, such as the high cost of transportation, installation, equipment, installation difficulty is big, expensive and high risk, after the expiration of service recovery value, in use process without protection.

Cast iron lamp pole, is now the most species, the first batch of low cost, high strength, but in use process happen serious corrosion, must be regular maintenance, cost, weight is 3 times of aluminium, the high cost of transport installation, no recovery value. If the steel tube lamp pole is used for hot-dip galvanizing, it is necessary to pay attention to environmental protection, otherwise, it will be serious to the environment.

It is also useful to make light poles for fiberglass. Its quality is light and the first cost is not high, which is its main advantage, but its disadvantages are also quite good: no recycling value, difficult to handle, high cost. The damage to the rod body will be very serious, and it will change color. High maintenance costs; At low temperature, the intensity will decrease greatly.

According to use aluminum alloy lamp pole can be divided into street lamp, courtyard light, lawn lamp, landscape lamp, the lamp pole, seat, and the top of the head can be made of aluminum alloy, light pole USES aluminium alloy spinning or extrusion, lamp holder for aluminum alloy castings, pole material of 6063 alloy, alloy materials for ZL1XX department.

Single arm light is the most commonly used, the most dosage, suitable for urban main road, sub-trunk road, branch road, factory and school, garden road, square lighting and so on. The distance between the road lamps is usually 50m~90m, and there are generally both sides.

There are 6 m, 7 m, 8 m, 9 m, 10 m 5 types of one-armed light pole.

Aluminum alloy garden lamp is suitable for park, garden, senior housing, villas, commercial pedestrian street, leisure square, organic, street parks, scenic areas, the zoo, etc., the height of the lamp is usually is 2.5 m ~ 5 m, but requires a high decorative and ornamental, and park harmony, is also a kind of has ornamental bright scenery. The ornamental light is produced by the spinning process, and it can also be manufactured by an extrusion method, light pole shall cover drawing, anodic oxidation, coating surface treatment, such as lamp holder can be made into various shapes. The bottom of the lamp is etched into water ripples, and the base is aluminum alloy castings.

Plaza, park, mall, hotel, hotel, resort, entertainment venues, hotels and organic aluminum alloy lamp pole height of outdoor lighting lamps used for general no more than 4 m, with the alloy is 6063 – T5, manufactured extrusion process with carve patterns or designs on woodwork, base for aluminum alloy castings. Landscape lamp is a type of decorative lighting and light source is flexible, the morphological structure of various beauty can achieve the combination of landscaping, lighting, landscaping, light and shade, light and art perfect crystal.

By December 2017, China has built more than 60 aluminum alloy flyovers, of which 42 have been built in Nanning, Guangxi, not only the most cities in China but also the most overpass in the world.

For bridge sizes and a bridge to the dosage of aluminum is not the same, every one big dosage of up to 200t, small each have about 50t, in the urban construction in the construction of auxiliary facilities should be the most individual projects in aluminum, so the promotion of the aluminum alloy bridge construction has important significance for expanding aluminum applications.

The application of aluminum in the future urban smart lighting and other intelligent public auxiliary facilities will be very useful. Can be used in the manufacture of all kinds of sensors (urban environment monitor display and sensor noise, air pollution detector, temperature/humidity sensor, brightness sensor, municipal construction monitoring), video monitoring equipment, security monitoring, vehicle monitoring), RFID system (special crowd monitoring, the monitoring of CMC, community security monitoring, the monitoring of municipal facilities), emergency call system (field extension associated with the monitoring center, monitoring center the active radio) of the external field, intelligent lighting network (type radiator, uniform light distribution based on brightness, intelligent single/centralized controller, a variety of modular design of lamp holder is optional), wireless network(WIFI hotspot in street lamp), information distribution system (advertisement broadcast, financial news, information release), charging pile (electric vehicle and electric bicycle charging), etc.