Kev siv txoj kev ntawm Emulsified asphalt kua

Tag nrho cov ntawv thov ua haujlwm rauEmulsified asphalt kuaua raws li cov txheej txheem kev tsim kho qhov kub thiab txias uas tshem tawm cov cua kub asphalt siab. Nws cov txheej txheem kev khiav hauj lwm ua haujlwm yog qhov yooj yim thiab muaj tsib theem tseem ceeb: kev npaj ua ntej ua ntej, reagent dilution, emulsification ntau lawm, kev tsim kho ntawm qhov chaw, thiab tom qab kev tsim kho. Nws yog tsim rau ntau yam xwm txheej xws li pavement micro-surfacing, slurry seals, bond-coat thiab prime-coat installation, thiab kho pavement. Cov ncauj lus kom ntxaws txog kev ua haujlwm tau piav qhia hauv qab no. Ua ntej, ua kom tiav kev npaj ua ntej ua ntej, npog cov khoom kuaj xyuas thiab kev kho lub hauv paus. Tshawb xyuas qhov kev sib khi ruaj khov thiab kev ua haujlwm ntawm emulsifiers, tshuaj tsuag tsheb, thiab cov khoom siv sib xyaw, thiab tshem tawm cov khoom qub qub thiab cov impurities hauv cov khoom kom tsis txhob muaj kev cuam tshuam emulsifying kev ua tau zoo. Ua tib zoo cheb cov pavements kom tshem tawm cov plua plav, gravel, roj paug, thiab dej sawv. Kho cov pas dej ua ntej kom ntseeg tau tias tiaj tus, qhuav, huv si pavements tsis muaj cov khib nyiab xoob. Yuav tsum nres kev tsim kho thaum lub caij ntuj sov los yog los nag.
Tom ntej no los txog kev dilution thiab kev npaj ntawm Emulsified Asphalt Liquid, cov kauj ruam tseem ceeb rau txhim khu kev qha emulsification zoo. Sib tov Emulsified Asphalt Liquid nrog cov dej huv huv raws li qhov project formula ratios. Qhov sib piv ntawm qhov sib txawv ntawm 1:20 txog 1:50 thiab tuaj yeem hloov kho raws li qib reagent thiab kev tsim kho. Khaws cov dej txias kom nruj ntawm 40-60 degree. Cov dej sov ua kom ceev cov reagent dissolution thiab tiv thaiv caking nyob rau hauv txias tej yam kev mob los yog kev ua hauj lwm degradation nyob rau hauv ntau dhau tshav kub. Ncuav dej sov rau hauv lub tank sib tov, maj mam ntxiv Emulsified Asphalt Liquid, thiab do ntawm qhov ceev li 3-5 feeb kom txog thaum cov reagent dissolves tag, yielding ib homogeneous, pob tshab aqueous tov tsis muaj hais los yog delamination. Tsis txhob nchuav undiluted Tshuag ncaj qha rau hauv asphalt; txwv tsis pub emulsification, caking, thiab theem sib cais yuav tshwm sim.
Tom qab ntawd tsim emulsified asphalt. Pub cov npaj aqueous Emulsified Asphalt Liquid tov thiab puag asphalt rhuab mus rau 120-140℃synchronously rau hauv asphalt emulsifier. Los ntawm cov khoom siv-tsav high-speed shearing, sib tsoo, thiab agitation, asphalt disperses tusyees nyob rau hauv lub aqueous theem los tsim ib tug ruaj khov roj-hauv-dej emulsified asphalt. Tsis tu ncua saib xyuas emulsion zoo thaum lub sijhawm tsim khoom. Tsim nyog emulsified asphalt nta cov xim sib xws, zoo fluidity, thiab tsis muaj sediment lossis deg tawv nqaij. Tso cai rau lub sijhawm luv luv tom qab tsim khoom es tsis txhob siv tam sim ntawd los lav kev ruaj ntseg.
Peb txoj kev tsim kho tseem ceeb ua haujlwm rau kev tsim vaj tsev sib txawv. Kev txau siv rau kev ua haujlwm ntawm cov pavement bond-coat thiab prime-coat ua haujlwm. Siv cov tshuaj tsuag cov tsheb thauj khoom siv emulsified asphalt sib npaug nrog cov yeeb yaj kiab tuab zoo ib yam, tsis txhob plam cov tshuaj txau lossis cov khoom sib xyaw. Kev sib tov yog siv feem ntau rau slurry-seal thiab sib tov batching. Muab emulsified asphalt sib npaug nrog aggregate, ntxhia hmoov, thiab dej los tsim slurry mixs. Paving yog siv los kho cov txheej txheej txheej txheej txheej thiab micro-surfacing. Pave, theem, thiab compact sib tov tam sim ntawd tom qab batching. Txhua qhov kev tsim kho ua haujlwm ua haujlwm ntawm qhov kub thiab txias yam tsis muaj cua sov, xa cov kev ua haujlwm zoo tshaj plaws.
Ua raws li kev kho tom qab kev tsim kho thiab kev loj hlob. Kaw cov tsheb khiav tam sim tom qab kev tsim kho, txwv cov tsheb thiab cov neeg taug kev nkag mus. Nyob rau hauv ambient tej yam kev mob, emulsified asphalt maj demulsifies, tso dej, thiab solidifies. Kev kho yuav siv sijhawm 2-4 teev nyob rau lub caij ntuj sov thiab 6-12 teev nyob rau lub caij ntuj no txias. Rov qab kev khiav tsheb tsuas yog thaum dej tau tag nrho cov evaporated, asphalt tau sib koom thiab kho, thiab qhov chaw qhuav thiab tsis tacky. Zam kev tsim kho nyob rau hnub los nag, cua, frosty, los yog txias hnub. Tiv thaiv dej los nag hauv 24 teev tom qab kev tsim kho los tiv thaiv kev ua tiav zoo.