Molemo oa theko e tlase le kaho e bonolo ea thaele ea asphalt o totobetse, empa haeba nako ea tšebeletso ea thaele ea asphalt e le khutšoanyane haholo, tlhokomelo e liehang ke ntho e khathatsang haholo, empa e eketsa bothata ba litšenyehelo tsa kaho le tsa kaho.

Ha e le hantle, sepheo sa pele sa moralo oa lithaele tsa sekontiri ke bakeng sa moralo oa ntlo ea lepolanka. Hobane nako ea bophelo ba kabine ka boeona e khutšoanyane, 'me bokhoni ba ho jara mojaro bo fokola, kahoo tlhoko ea thaele e bobebe le e tšesaane, thaele ea sekontiri e hlahile motsotsong oa nalane, ho e-na le lesela la linoleum la pele, e ile ea e-ba khetho e ntle ka ho fetisisa bakeng sa marulelo a kabine.

Ho fihlela joale, lithaele tsa asphalt li se li fumaneha ka lilemo tse fetang 60, kamora lilemo tse fetang 60 tsa nts'etsopele, likarolo tsohle tsa lithaele tsa asphalt li ntlafalitsoe, phetoho e totobetseng ka ho fetisisa ke hore lithaele tsa asphalt li na le maemo a naha.

Ho ya ka maemo a naha a tlhahiso ya dithaele tsa asphalt, bophelo ba tshebeletso ya lera le le leng la dithaele tsa asphalt bo ka netefatsa dilemo tse 20 tsa bophelo, mme bophelo ba tshebeletso ya lera le le leng la dithaele tsa asphalt bo ka netefatsa dilemo tse 30.

Seo ha se bolelele ba dithaele tsa setso, tse ka nkang dilemo tse fihlang ho tse 50. Empa ho ya ka sekgahla sa ntshetsopele ya ditoropo tsa China le bophelo ba kaho, bophelo ba tshebeletso ya dithaele tsa asphalt tsa dilemo tse 30 bo lekane ho lekana le mehaho e mengata. Kahoo dilemong tse 10 tse fetileng, boholo ba tshebediso ya dithaele tsa asphalt bo bile boholo haholo, kaofela di na le marulelo a leralla, ho na le maemo a ho sebedisa dithaele tsa asphalt.

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