-
Isisombululo se-verkey ye-oyile esetyenzisiweyo yeoyile
I-oyile esetyenzisiweyo, ibizwa ngokuba yioyile ye-hubrite, ziintlobo zoomatshini, izithuthi, iinqanawa zokutshintsha i-oyile ye-gum, i-oxide kwaye iphulukane nokusebenza kakuhle. Esona sizathu siphambili: Okokuqala, ioyile esetyenzisiweyo ixutywe noManyango weoyile kunye ne-powder ye-oyile eveliswe kukunxiba ngoomatshini, kukhokelela kumbala omnyama kunye nophawu olukhulu. Okwesibini, ioyile iwohloka ekuhambeni kwexesha, ukwenza i-acids ye-organic, izinto ze-colloid kunye ne-asphalt-enjenge-Asphalt-enje.
