Chifukwa chiyani Asphalt Imafunika Kutenthedwa

Preheating asphalt imathandizira kusamutsidwa kwake ku zida zofukira, kumawonjezera madzi ake.

Kuwonjezeka kumeneku kumapangitsa kuti phulalo lilowe mu pores ndi mikwingwirima bwino kwambiri, potero kusintha kwambiri mphamvu zake zoletsa madzi.