Saamaynta warshadda isku dhafka asphalt lama dhayalsan karo. Waxay sidoo kale saameyn weyn ku leedahay waxtarka kuleylka ee dhuumaha asphalt. Tani waa sababta oo ah tilmaamayaasha waxqabadka muhiimka ah ee asphalt, sida viscosity iyo sulfur content, waxay si dhow ula xiriiraan saldhigga isku dhafka asphalt. Guud ahaan, marka uu bato viscosity-ku, ayaa ka sii daraya saamaynta atomization, taas oo si toos ah u saameeya waxtarka shaqada iyo isticmaalka shidaalka. Sida heerkulku kor u kaco, viscosity ee saliidda culus ayaa si tartiib tartiib ah hoos u dhacaya, sidaas darteed saliidda viscosity sare waa in la kululeeyaa si habsami leh iyo atomization.

Sidaa darteed, marka lagu daro fahamka tilmaamayaasha caadiga ah, sidoo kale waa lagama maarmaan in la barto qalooca heerkulka-kululka marka la dooranayo si loo hubiyo in kuleylku uu ka dhigi karo daamurka inuu gaaro viscosity uu u baahan yahay gubi ka hor atomization. Markii la hubinayay nidaamka wareegga asphalt, waxaa la ogaaday in heerkulka dhuumaha asphalt uusan buuxin shuruudaha, taasoo keentay in daamurka dhuumaha ku jira uu sii adkeeyo.
Sababaha ugu waaweyn waa sida soo socota:
1. Taangiga saliidda heerka sare ee saliidda kulaylku aad ayuu u hooseeyaa, taasoo keentay in wareegga saliidda kulaylka uu xumaado;
2. Tuubbada gudaha ee tubbada laba-lakabka ah waa mid xajmi leh
3. Dhuumaha saliidda kulaylku aad bay u dheer yihiin;
4. Dhuumaha saliidda kulaylka ma aysan qaadin tillaabooyinka daboolka habboon, iwm. Kuwani waa arrimaha ugu muhiimsan ee saameeya saameynta kuleylka.