Ibitumen eguquliwe ye-Rubber powder (I-BitumenRubber, ebizwa ngokuthi i-AR) iwuhlobo olusha lwezinto ezihlanganisiwe zekhwalithi ephezulu. Iwuhlobo olusha lwenhlanganisela yekhwalithi ephezulu eyenziwe ngempuphu yerabha eyenziwe ngamathayi alahlwayo, eyengezwa njengesilungisi sebitumen eyisisekelo. Yenziwa ngokusebenzisa uchungechunge lwezenzo ezifana nokushisa okuphezulu, izithasiselo kanye nokuxuba kwe-shear kumishini ekhethekile ekhethekile. Okubalulekile. Inganweba impilo yesevisi yendawo yomgwaqo, inciphise umsindo, inciphise ukudlidliza, ithuthukise ukuzinza kokushisa kanye nokuqhekeka okushisayo, futhi ithuthukise ukumelana ne-icing. Ngaphansi kwesenzo esihlanganisiwe setiyela esindayo, imfucumfucu yerabha edotiwe kanye nezixube, impushana yenjoloba imunca izinhlaka, ama-hydrocarbon nezinye izinto eziphilayo etiyela, bese ibhekana nochungechunge lwezinguquko zomzimba 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 yenjoloba kulindeleke ukuthi ithathe indawo yebitumen eguquliwe ye-SBS.
inzuzo

Impuphu yenjoloba ingafakwa etiyela ekwakhiweni kwemigwaqo nemigwaqo. Lolu hlelo lokusebenza lwalungahloselwe ekuqaleni njengendawo yokukhipha udoti amathayi, kodwa kunalokho ukuthuthukisa izakhiwo zebitumen zibe sezingeni elifana nelebitumen lekhwalithi ephezulu eliqukethe ama-elastomer amasha. Izinzuzo zokwengeza i-rubber powder ku-bitumen zihlanganisa ukunciphisa ukuthambekela komgwaqo ukuqhekeka (ikakhulukazi ezindaweni ezibandayo), ukuthuthukisa ukuqina komgwaqo, ukumelana kwawo kwamanzi kanye nokuzinza kwetshe. Ibitumen elungiswe ngerabha ihlala isikhathi eside, ihlala isilinganiso seminyaka eyisikhombisa kunemiksi yebitumen evamile.?
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:
1. Ukungena kuncipha, iphuzu lokuthambisa liyakhula, futhi i-viscosity iyanda, okubonisa ukuthi ukuzinza kwezinga lokushisa eliphezulu kwebitumen kuyathuthukiswa, futhi kungathuthukisa i-rutting kanye ne-push phenomena emgwaqeni ngesikhathi sokushayela ehlobo.
2. Ukuzwela kwezinga lokushisa kuncishisiwe. Uma izinga lokushisa liphansi, i-bitumen iba brittle, ibangele 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.
3. Ukusebenza okuphansi kwezinga lokushisa kuyathuthukiswa. Impuphu yerabha ingathuthukisa izinga lokushisa eliphansi le-ductility yetiyela futhi ikhulise ukuguquguquka kwetiyela.
4. Ukunamathela okuthuthukisiwe. Njengoba ukushuba kwefilimu ye-bitumen yenjoloba enamathela ebusweni betshe kwanda, ukumelana nendawo egandaywe yitiyela ekulimaleni kwamanzi kungathuthukiswa futhi ukuphila komgwaqo kunganwetshwa.
5. Yehlisa ukungcoliswa komsindo.
6. Khulisa ukubamba phakathi kwamasondo emoto nendawo yomgwaqo futhi uthuthukise ukuphepha kokushayela.
ukushiyeka
Kodwa-ke, ukusetshenziswa kwe-powder yerabha ngale ndlela kwandisa izindleko zebitumen, futhi ukufakwa kwe-rubber powder ku-bitumen kwenza ingxube yebitumen ibe nzima kakhulu ukuyiphatha (kulula ukunamathela) futhi kwandisa isikhathi sokusebenza. Ngezinye izikhathi i-bitumen equkethe inani elikhulu le-rubber powder kulula ukubamba umlilo ngesikhathi sokuncibilika, ngakho-ke kunconywa ukuthi okuqukethwe kwe-rubber powder ku-rubber modified bitumen kufanele kube ngaphansi kuka-10%.