Izitshalo ze-asphalt zamandla zenzelwe i-asphalt ye-mastic yamatshe
Isikhathi Sokukhipha:2023-10-30
Izitshalo ze-asphalt zamandla zenzelwe ukukhiqizwa kwe-asphalt ye-mastic yamatshe futhi sinemojula ohlelweni lwethu lwesofthiwe.Futhi sikhiqiza iyunithi ye-cellulose dosing unit.Ngabasebenzi bethu abanolwazi, asihlinzeki nje ngokuthengisa kwezitshalo, kodwa futhi nokusekelwa kokusebenza ngemva kokuthengisa nokuqeqeshwa kwabasebenzi.
I-SMA iyigebe uma kuqhathaniswa (12.5–40 mm) enegebe, iminyene, i-HMA esetshenziswa njengesifundo esingaphezulu kukho kokubili ukwakhiwa okusha nokuvuselela indawo. Kuyingxube kasimende we-asphalt, i-aggregate eqinile, isihlabathi esichotshoziwe, nezithasiselo. Lezi zingxube zihlukile kuzingxube ezivamile ze-HMA zebanga eliminyene ngokuthi kunenani elikhulu kakhulu le-aggregate emaholoholo kungxube ye-SMA. Ingasetshenziswa emigwaqweni emikhulu enabantu abaningi bethrafikhi. Lo mkhiqizo uhlinzeka ngendlela yokugqoka engakwazi ukumelana ne-rut kanye nokumelana nesenzo sokugwaza samasondo agxilile. Lolu hlelo lokusebenza luhlinzeka ngokuguga kancane kanye nokusebenza okuhle kwezinga lokushisa eliphansi.
I-SMA isetshenziselwa ukukhulisa ukusebenzisana kanye nokuxhumana phakathi kwengxenyana ehlanganisiwe ye-HMA. Usimende we-asphalt kanye nezingxenye ezihlanganisiwe ze-mastic ezigcina itshe liseduze. Idizayini evamile yengxube ngokuvamile izoba nosimende we-asphalt webanga eliphakathi kuka-6.0–7.0% (noma i-polymer-modified AC), isigcwalisi esingu-8–13%, i-aggregate engu-70% encane engaphezu kuka-2 mm (No 10), kanye nesisefo esingu-0.3–1.5%. isisindo mix. Imicu ngokuvamile isetshenziselwa ukuzinzisa imastic futhi lokhu kunciphisa ukuphuma kwe-binder kungxube. Ama-Voids ngokuvamile agcinwa phakathi kuka-3% no-4%. Ubukhulu bosayizi bezinhlayiyana busukela ku-5 kuye ku-20 mm (0.2 kuya ku-0.8 in.).
Ukuxuba, ukuthutha, kanye nokubekwa kwe-SMA kusebenzisa amathuluzi esintu kanye nezinqubo ngokuhlukahluka okuthile. Isibonelo, izinga lokushisa eliphezulu lokuhlanganisa elingaba ngu-175°C (347°F) livamise ukudingekile ngenxa ye-aggregate eqinile, izithasiselo, kanye ne-viscosity ephezulu uma kuqhathaniswa nezingxube ze-SMA. Futhi, lapho kusetshenziswa imicu ye-cellulose, isikhathi sokuxuba kufanele sengezwe ukuze kuvunyelwe ukuxutshwa okufanele. Ukugoqa kuqala ngokushesha ngemva kokubekwa ukuze kuzuzwe ukuminyana ngokushesha ngaphambi kokuba izinga lokushisa lengxube lehle kakhulu. Ukuminyana kuvame ukufezwa ngokusebenzisa amasondo angu-9–11 tonne (10–12 tonne) anamasondo ensimbi. I-Vibratory rolling nayo ingasetshenziswa ngokuqapha. Uma kuqhathaniswa ne-HMA enezinga eliminyene elivamile, i-SMA inokumelana nokugunda okungcono, ukumelana nokuhuzuka, ukumelana nokuqhekeka, nokumelana nokushushuluza, futhi ilingana nokwenziwa komsindo. Ithebula 10.7 limele ukuqhathaniswa kokuthweswa iziqu kwe-SMA esetshenziswa e-United States naseYurophu.