Muaj ntau ntau hom asphalt nyob rau hauv kev ua lag luam, yog li peb paub ntau npaum li cas txog kev tsim cov roj hmab asphalt? Cia wb mus saib ua ke.
Roj hmab asphalt yog ib qho kev hloov kho asphalt binder cov khoom tsim los ntawm thawj zaug ua cov thawj cov log tsheb pov tseg rau hauv cov hmoov roj hmab, tom qab ntawd muab nws ua raws li qee qhov ntxhib thiab zoo grading piv, ntxiv ntau yam kev hloov pauv siab polymer, thiab tag nrho melting thiab o nrog matrix asphalt. nyob rau hauv qhov kub thiab txias (txog 180 ° C) nrog kev sib xyaw ua ke. Nws yog feem ntau to taub asphalt nrog roj hmab ntxiv. Roj hmab asphalt muaj qhov kub thiab txias stability, tsis tshua muaj kub yooj, tiv thaiv kev laus, tiv thaiv qaug zog, thiab dej puas. Nws yog ib qho zoo tshaj plaws environmentally friendly pavement khoom thiab yog tsuas yog siv nyob rau hauv kev nyuaj siab absorbing txheej thiab nto txheej ntawm txoj kev lug.

Muaj peb lub tswv yim nrov ntawm "rubber asphalt": "txoj kev qhuav" roj hmab asphalt, "txoj kev ntub" roj hmab asphalt, thiab "asphalt depot mixing method" roj hmab asphalt.
(1) "Dry method" roj hmab asphalt yog sib tov roj hmab hmoov nrog aggregate ua ntej, thiab tom qab ntawd ntxiv asphalt rau kev sib tov. Txoj kev no
yog xav txog roj hmab hmoov raws li ib feem ntawm cov aggregate, tab sis feem ntau cov roj hmab hmoov tsis tuaj yeem siab dhau. Txoj kev no tsis tshua siv.
(2) "Wet method" roj hmab asphalt yog sib tov ib qho ntawm cov roj hmab hmoov nrog asphalt ua ntej, thiab hnov ​​​​mob ntawm qhov kub siab los ua ib qho kev sib xyaw nrog qee yam khoom. Tam sim no nws yog txoj kev siv dav tshaj plaws los tsim cov roj hmab asphalt.
(3) "Asphalt depot mixing method" yog hais txog kev sib xyaw ntawm cov roj hmab khib nyiab nrog cov asphalt kub hauv lub refinery lossis asphalt depot, thiab xa mus rau qhov chaw asphalt qhob tov khoom lossis chaw tsim kho. "Asphalt depot mixing method" tuaj yeem suav tau tias yog hom "ntub txoj kev" ntau lawm, tab sis nws cov khoom siv roj hmab pov tseg feem ntau tsis tshaj 10%, cov roj hmab hmoov siv qis dua, thiab cov viscosity qis dua li cov roj hmab asphalt. ("wet method" ntau lawm). Kev sib xyaw ua ke tsis tuaj yeem ua tiav qhov kev ua tau zoo ib yam li roj hmab asphalt sib tov.
Dab tsi yog qhov zoo ntawm cov roj hmab asphalt piv nrog cov asphalt zoo tib yam?
1. Anti-reflective tawg
Nyob rau hauv cov roj hmab asphalt kev nyuaj siab absorbing txheej, ib tug siab npaum li cas ntawm cov roj hmab asphalt yog muaj zog bonded nrog gravel ntawm ib tug me me particle loj los ua ib tug tawg reflection qauv txheej txog 1cm tuab. Ntau yam kab nrib pleb nyob rau hauv cov dej-ruaj khov txheej los yog cov cement pavement qub yuav pom tias nws nyuaj rau nkag mus rau txheej txheej no, uas tuaj yeem cuam tshuam qhov kev xav ntawm cov kab nrib pleb.
2. Anti-dej puas
Cov roj hmab asphalt loj (2.3kg / / m2), thiab asphalt zaj duab xis txog li 3 hli thickness yuav tsim rau ntawm txoj kev nto, uas tuaj yeem tiv thaiv cov dej nag los ntawm kev nkag mus rau hauv qab thiab tiv thaiv txoj kev. Thib ob, thaum paving asphalt sib tov rau ntawm nws, cov roj hmab asphalt nyob rau sab saum toj ntawm cov roj hmab asphalt kev nyuaj siab absorbing txheej yuav yaj rau zaum ob, thiab tom qab txoj kev nto yog compacted, nws yuav tag nrho cov qhov sib txawv nyob rau hauv qab ntawm qhov sib tov nto. , yog li tshem tawm qhov muaj peev xwm ntawm cov dej cia ntawm cov khaubncaws sab nraud povtseg thiab tiv thaiv cov dej puas.
3. Bonding nyhuv
Roj hmab asphalt muaj zog viscosity. Nws tuaj yeem raug adsorbed thiab sib koom ua ke rau cov dej-ruaj khov txheej lossis qub cement pavement ruaj khov, yog li ua lub luag haujlwm sib txuas nrog txoj kev.