NOTICE: Citizendium is still being set up on its newer server, treat as a beta for now; please see here for more.
Citizendium - a community developing a quality comprehensive compendium of knowledge, online and free. Click here to join and contribute—free
CZ thanks our previous donors. Donate here. Treasurer's Financial Report -- Thanks to our content contributors. --

Asphalt (paving)

From Citizendium, the Citizens' Compendium
Revision as of 10:02, 3 December 2007 by Jochen Wendebaum (Talk | contribs) (minor adds)

Jump to: navigation, search
This article is developing and not approved.
Main Article
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
This editable Main Article is under development and not meant to be cited; by editing it you can help to improve it towards a future approved, citable version. These unapproved articles are subject to a disclaimer.

Asphalt ist a mix of bitumen, aggregate and additives. Usual asphalt consists to 90 to 95 percent by weight of aggregate and 5 to 10 % of bitumen.


Asphalt is water repellant due to the bitumen which is part of the asphalt conglomerate.

The physical properties are dependent on the temperature of the material, as at high temperatures, asphalt has a very distinctive viscous behaviour, which becomes more and more elastic with dropping temperatures.

As the physical properties are mainly dependent on the used aggregates, they can vary in a large range. Typical values are:

  • heat conductivity: 0.8 - 1.2 W/mK
  • specific heat capacity: 850 - 1050 J/kgK


The main use of asphalt is the creation of pavements like roads or airfields. Due to it's physical properties, it can be used as a robust basement as well as a high-load surface.