Bitumen ni umukara kandi watsinze cyane cyangwa igice kinini cya peteroli. Irashobora kuboneka mubitsa amabuye y'agaciro. Imikoreshereze nyamukuru ya asfalt (70%) iri mubwubatsi bwumuhanda, nkagabumwe cyangwa ifatika kuri asfalt beto. Ibindi bikorwa byingenzi biri mubicuruzwa bya asfalt oftaltroof, harimo hejuru yinzu yubushuhe bwo gupima kugirango ushyire hejuru ibisenge.

Inzira ya Asfalt yo kuvanga ibisaruro igizwe no kuvanga granite hamwe na asfalt kugirango ubone imvange ya asfalt. Ivangura ryavuyemo rikoreshwa cyane nkibikoresho bifatika. Ibyinshi mubikorwa bikoreshwa mugukama no gushyushya igiteranyo. Noneho itsinda rya sinuereefer ritanga igisekuru gishya cyo kuvanga Ashalt cyujuje ibisabwa byose bigezweho byo guhuza ibidukikije, kwiringirira kwiringirwa, kwizerwa. Politiki nziza nimwe mu ngingo z'ingenzi z'urugomo.
Itsinda rya Seno Houst rikoresha uburyo bushya nuburyo bukoreshwa, bisaba kwitwara neza, ibisabwa bituma habaho ibiciro byiza, bikaba bihurira no guterana, bikora garanti, bifatanije na garanti, bihuza inkomoko yumusaruro na gari ya moshi mumyaka yashize.