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Nruab nrab kub urhalt block
Qhov taw qhia yuav tsum muaj:
Softening taw tes: 50-70 ℃
Cov hmoov tshauv: ≤ 0.5%.
Cov khoom nta thiab siv: Hom asphalt muaj qhov muag muag qis thiab feem ntau siv rau cov roj ua ke hauv cov khoom siv. Tsawg qhov kub asphalt belts bills rau tshwj xeeb asphalt thiab kuj tseem siv tau rau cov khoom siv asphalt, cov khoom siv roj hmab, ua kom cov roj hmab, thiab lwm yam Hoobkas tuaj yeem tsim raws cov neeg siv khoom siv.
Mos suab yog qhov seem ntawm tar distillation, nrog cov txiaj ntsig ntawm 54-56% ntawm tar. Nws yog tsim cov duab uas muaj ntxhiab nrog ntau tshaj peb lub nplhaib, cov pa roj av muaj, thiab cov roj ntsha me me ntawm cov tshuaj muaj roj ntau. Qhov hnyav molecular ntawm asphalt Cheebtsam ntawm 200 txog 2000, nrog qhov ntau kawg ntawm 3000. Nruab Nrab Nruab Nrab yog faib raws cov ntsiab lus sib txawv. Qhov muag muag taw tes yog 60-80 ℃ rau nruab nrab kub ayhalt.
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Asphalt hmoov
Qhov taw qhia yuav tsum muaj:
Softening taw tes: 105-155 ℃
Cov tshauv cov ntsiab lus: ≤ 0.5%
Coking Tus Nqi: ≥ 55%
