This week’s research project is about asphalt.



The term, “asphalt”, is delivered from ancient Greek, “ασφαλτοσ(asphaltos)”. In Europe, it’s often called “bitumen”. There’s a little different between term and meaning each countries.In Egypt in B.C.3000, it’s used to embalm mummy.Incidentally asphalt is refined from petroleum basically.


Although it’s. sometimes used to build water proof something, almost to pave roads. Approximately from A.D.1800, roads covered in asphalt has been increasing. One of reasons about that, increasing car traffic.Canada has the largest natural asphalt deposits around the world. (in Athabasca oil sands)


Nonpetroleum-based aspahlt is also being used. Because it’s lighter-colored than petroleum one, being also used for parking lot.It’s important for us to use light-colored one.(it’s same as arctic ice being important on problem of global warming.) Nonpetroleum-based aspahlt is very sustainable!


・Ted Talk about a self-healing asphalt in 2012 by Erik Schlangen.

In Japan

The first use of asphalt In Japan is for pavement on bridge in Tokyo in 1878. Also in Japan , from the middle of 1800 its use has been increasing.


Blog below is about one lake, Pitch lake, in Trinidad and Tobago.

On this lake, asphalt substance is floating. It’s interesting.(maybe.. I think that also at Dead Sea there is something like this.)

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