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  • The global road network is one of the largest systems ever built by man.


  • In the United States alone, the total length of roadway exceeds 6.6 million kilometers, enough to circle the Earth 165 times.

    光是在美國,所有道路的長度加總起來便超過了 660 萬公里,足以繞行地球 165 次。

  • While relatively simple to build as compared to other structures like skyscrapers or dams,


  • the sheer scale of the global network makes road construction one of the largest sources of material consumption on our planet.


  • While road types can vary greatly depending on their use, location and construction method,


  • the majority are formed from crushed rock, sand and asphalt in a process that releases volatile organic compounds (VOCs) into the atmosphere.

    大部分的道路都是由碾碎的石頭、沙子與柏油打造而成,並在過程中釋放出揮發性有機化合物 (VOCs) 到大氣層中。

  • In order to curb the environmental impact of road construction, a number of new innovations are now being trialed.


  • Replacing some of the finite resources used in road construction with one of humanity’s most notorious waste products, all whilst extending the life of the roadway itself, makes a lot of sense.


  • In India, the process of melting plastic to fill in potholes has been happening on a small scale for a number of years.


  • British engineer, Toby McCartney, recognized the benefit of using plastic in roads while travelling the country,

    名為 Toby McCartney 的英國工程師在該國旅行時,察覺到了在道路上使用塑膠的好處,

  • and developed a method of turning plastic bottles into small pellets that could be added to an asphalt mix to increase its bulk.


  • McCartney’s solution has created roadways that are 60% stronger and last 10 times longer than those built with conventional methods.

    McCartney 的解決方案創造出了比用一般工法所鋪設的道路強度增強 60%,壽命延長 10 倍的道路。

  • The UK county of Cumbria quickly noticed the benefits of this innovation and have adopted the process for new public roads in the region.


  • Using 3 to 10 kilograms of waste plastic per ton of asphalt, and with roughly 10 tons of asphalt used in every kilometer of roadway construction,

    該工法在每公噸的柏油中使用了 3 至 10 公斤的廢棄塑膠,而鋪設每公里道路約需 10 公噸的柏油,

  • this process has the potential to lock-up a considerable amount of waste material that could otherwise end-up in landfill or our oceans.


  • Taking things a step further, Dutch company KWS, together with Wavin and Total, have developed PlasticRoad: a prefabricated, modular roadway made from recycled plastic.

    而將這樣的概念更進一步推展,荷蘭公司 KWS 與 Wavin 與 Total 公司合作發展出了「塑膠路」:這是一種以回收塑膠為原料,預先製造完成的模組化道路。

  • The product’s anticipated lifespan is three times longer than that of a normal road build-up.


  • It’s also four times lighter and can be constructed 70% faster than a traditional asphalt roadway.

    它還比傳統柏油道路更輕,並且鋪設速度快上 70%。

  • PlasticRoad’s hollow design allows service pipes and cables to be fed through its road deck without the need for extensive digging.


  • Some of the space can also be used to store excess water during storms.


  • With a number of trial projects now planned, including this bike path in the Netherlands, which opened in September 2018,

    如今當地已準備計畫數個試驗建案,包含了這個在 2018 年九月開張的荷蘭腳踏車道,

  • you could see prefabricated plastic roads on a street near you in the not too distant future.


  • Incorporating solar panels directly into the road network has the potential to turn an otherwise static piece of infrastructure into a major source of renewable energy production.


  • Companies such as Solar Roadways in the United States, Wattway in France, and SolaRoad in the Netherlands

    如美國的 Solar Roadways 公司、法國的 Wattway 公司,以及荷蘭的 SolaRoad 公司

  • have all developed prototype systems that are durable enough to withstand traffic loads and the elements.


  • While the concept may sound advantageous, critics have raised a number of concerns around this new type of roadway,


  • including the safety of vehicles driving over the toughened glass or silica that is required to protect the photovoltaic elements,


  • and how effective horizontal solar panels can be as compared to those positioned diagonally on roofs.


  • Several pilot schemes are now underway, seeking to overcome these challenges.


  • With a drive to reduce pollution, recycle plastic and construct a more sustainable built environment,


  • innovative solutions like these could make a significant difference when applied to something as vast as the global road network.


  • If you enjoyed this video and would like to get more from the definitive video channel for construction, subscribe to The B1M.

    如果你喜歡這部影片,並想要觀賞更多來自最權威營造相關影片頻道的內容,敬請訂閱 B1M 頻道。

The global road network is one of the largest systems ever built by man.


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    Jeff Chiao 發佈於 2022 年 03 月 09 日