I-asphalt ikhona ezifundeni ezimbili eziyinhloko: ihlala iqinile emazingeni okushisa e-ambient futhi iguqukela ekubeni uketshezi lapho ishiswa.
Ekwakhiweni, izisebenzi zishisisa itiyela omisweni lwayo oluwuketshezi futhi zilusebenzise endaweni yokusebenza. Lapho ukupholisa, iqina ibe isivikelo, ukuqinisa ukuvinjelwa kwamanzi, evame ukuqashwa ekwakhiweni komgwaqo kanye nezicelo zokufulela.