1. Incazelo ye-bitumen eguquliwe ye-rubber powder
Ibitumen elungisiwe ye-Rubber powder (i-bitumen Rubber, ebizwa ngokuthi i-AR) iwuhlobo olusha lwezinto ezihlanganisiwe zekhwalithi ephezulu. Ngaphansi kwesenzo esihlanganisiwe setiyela esindayo, imfucumfucu yerabha edotiwe kanye nezixube, impushana yenjoloba imunca izinhlaka, ama-hydrocarbon nezinye izinto eziphilayo etiyela, bese ibhekana nochungechunge lwezinguquko ezingokomzimba namakhemikhali ukuze zimanzise futhi zandise impushana yenjoloba. I-viscosity iyanda, indawo yokuthambisa iyanda, futhi i-viscosity, ukuqina, nokunwebeka kwerabha nebitumen kuyacatshangelwa, ngaleyo ndlela kuthuthukiswe ukusebenza komgwaqo kwebitumen yenjoloba.
"Ibitumen eguquliwe ye-Rubber powder" ibhekisela kumpushana werabha owenziwe ngamathayi alahlwayo, owengezwa njengesilungisi sebitumen eyisisekelo. Yenziwa ngokusebenzisa uchungechunge lwezenzo ezifana nokushisa okuphezulu, izithasiselo kanye nokuxuba kwe-shear kumishini ekhethekile ekhethekile. impahla enamathelayo.
Umgomo wokuguqulwa kwebitumen eguquliwe ye-raba powder iyisisetshenziswa esilungisiwe setiyela esakhiwe ukusabela kokuvuvukala okugcwele phakathi kwezinhlayiya zempuphu yerabha yesondo kanye nebitumen ye-matrix ngaphansi kwezimo ezixutshwe ngokugcwele ezisezingeni eliphezulu. I-bitumen eguquliwe ye-Rubber powder ikuthuthukise kakhulu ukusebenza kwe-base bitumen, futhi idlula itiyela eliguquliwe elenziwe ngezilungisi ezisetshenziswa kakhulu njengamanje ezifana ne-SBS, SBR, EVA, njll. Ngenxa yokusebenza kwayo okuhle kakhulu negalelo elikhulu ekuvikelweni kwemvelo, abanye ochwepheshe. ukubikezela ukuthi i-bitumen eguquliwe yeraba kulindeleke ukuthi ithathe indawo yebitumen eguquliwe ye-SBS.
2. Izici ze-rubber powder modified bitumen
Irabha esetshenziselwa i-bitumen eguquliwe iyi-polymer enwebeka kakhulu. Ukwengeza i-vulcanized rubber powder ku-bitumen eyisisekelo kungafinyelela noma kudlule umphumela ofanayo ne-styrene-butadiene-styrene block copolymer modified bitumen. Izici ze-bitumen eguquliwe ye-raber powder zifaka:
2.1. Ukungena kunciphisa, iphuzu lokuthambisa liyakhula, futhi i-viscosity iyanda, okubonisa ukuthi ukuzinza kwezinga lokushisa eliphezulu kwebitumen kuyathuthukiswa, futhi i-rutting and pushing phenomena yomgwaqo ehlobo iyathuthukiswa.
2.2. Ukuzwela kwezinga lokushisa kuncishisiwe. Lapho izinga lokushisa liphansi, itiyela liba brittle, libangele ukuqhekeka kokucindezeleka emgwaqeni; lapho izinga lokushisa liphezulu, i-pavement iyathambile futhi ikhubazekile ngaphansi kwethonya lezimoto ezithwele. Ngemuva kokuguqulwa nge-rubber powder, ukuzwela kwezinga lokushisa kwebitumen kuyathuthukiswa futhi ukumelana nokugeleza kwayo kuyathuthukiswa. I-viscosity coefficient ye-bitumen eguquliwe ye-rubber powder inkulu kune-bitumen yesisekelo, okubonisa ukuthi i-bitumen eguquliwe inokumelana okuphezulu nokuguquguquka kokugeleza.
2.3. Ukusebenza kwezinga lokushisa eliphansi kuyathuthukiswa. Impuphu yerabha ingathuthukisa izinga lokushisa eliphansi le-ductility yetiyela futhi ikhulise ukuguquguquka kwetiyela.
2.4. Ukunamathela okuthuthukisiwe. Njengoba ukushuba kwefilimu ye-bitumen yenjoloba enamathela ebusweni betshe kwanda, ukumelana kwetiyela ekulimaleni kwamanzi kungathuthukiswa futhi impilo yomgwaqo inganwetshwa.
2.5. Yehlisa ukungcoliswa komsindo.
2.6. Khulisa ukubamba phakathi kwamasondo emoto nendawo yomgwaqo futhi uthuthukise ukuphepha kokushayela.