1. Tanthauzo la phula la ufa wosinthidwa phula
Phula losinthidwa phula (phula la phula, lomwe limatchedwa AR) ndi mtundu watsopano wazinthu zapamwamba kwambiri. Pansi ophatikizana zochita katundu wolemera phula, zinyalala tayala mphira ufa ndi admixtures, ufa mphira zimatenga utomoni, ma hydrocarbons ndi zinthu zina organic mu phula, ndipo amadutsa angapo kusintha thupi ndi mankhwala moisten ndi kukulitsa ufa mphira. Kukhuthala kumawonjezeka, kufewetsa kumawonjezeka, ndipo kukhuthala, kulimba, ndi kutha kwa mphira ndi phula zimaganiziridwa, potero kumapangitsa kuti phula labala liziyenda bwino.
"Labala losinthidwa phula" limatanthawuza ufa wa rabara wopangidwa kuchokera ku matayala otayira, omwe amawonjezeredwa ngati chosinthira ku phula lapansi. Zimapangidwa kudzera muzochita zambiri monga kutentha kwakukulu, zowonjezera ndi kumeta ubweya kusakaniza mu zipangizo zapadera. zomatira zakuthupi.
Mfundo yosinthira phula la ufa wosinthidwa phula ndi phula losinthidwa la phula lomwe limapangidwa ndi kutupa kwathunthu pakati pa tinthu tating'ono ta mphira wa tayala ndi phula la matrix pansi pa kutentha kwakukulu. Phula losinthidwa phula la phula lathandiza kwambiri ntchito ya phula, ndipo limaposa phula losinthidwa lomwe limapangidwa ndi zosintha zomwe zimagwiritsidwa ntchito masiku ano monga SBS, SBR, EVA, ndi zina zotero. kulosera kuti phula losinthidwa phula likuyembekezeredwa kuti lilowe m'malo mwa phula la SBS.
2. Makhalidwe a labala ufa wosinthidwa phula
Labala yomwe imagwiritsidwa ntchito popanga phula ndi polima zotanuka kwambiri. Kuonjezera ufa wa mphira wonyezimira pansi pa phula kungathe kukwaniritsa kapena kupitirira zotsatira zomwezo monga styrene-butadiene-styrene block copolymer modified bitumen. Makhalidwe a phula losinthidwa phula ndi monga:
2.1. Kulowa kumachepa, kufewetsa kumawonjezeka, ndipo kukhuthala kumawonjezeka, kusonyeza kuti kutentha kwapamwamba kwa phula kumakula bwino, ndipo zochitika zothamanga ndi kukankhira pamsewu m'chilimwe zimakhala bwino.
2.2. Kutentha kumachepa. Kutentha kukakhala kocheperako, phulalo limakhala lolimba, zomwe zimapangitsa kuti pakhale kupsinjika kwapakati; kutentha kukakhala kokwera, msewu umakhala wofewa ndipo umapunduka chifukwa cha magalimoto onyamula. Pambuyo pa kusinthidwa ndi ufa wa rabara, kutentha kwa phula kumawonjezeka ndipo kukana kwake kumayendetsedwa bwino. The viscosity coefficient of the rabara ufa wosinthidwa phula ndi waukulu kuposa wa phula, kusonyeza kuti phula losinthidwa limakhala ndi kukana kwakukulu kwa kayendedwe ka kayendedwe kake.
2.3. Kutsika kwa kutentha kumapangidwa bwino. Ufa wa mphira ukhoza kupititsa patsogolo kutsika kwa kutentha kwa phula ndikuwonjezera kusinthasintha kwa phula.
2.4. Kumamatira kumawonjezera. Pamene makulidwe a filimu ya phula yomwe imamatira pamwamba pa mwalawo ukuwonjezeka, phula la phula limakanizidwa ndi kuwonongeka kwa madzi likhoza kukhala bwino ndipo moyo wa msewu ukhoza kukulitsidwa.
2.5. Chepetsani kuwononga phokoso.
2.6. Wonjezerani kumangirira pakati pa matayala agalimoto ndi pamwamba pa msewu ndikuwongolera chitetezo chagalimoto.