Micro-surfacing yog kev tiv thaiv kev siv thev naus laus zis uas siv qee qib ntawm pob zeb chips lossis xuab zeb, cov khoom siv (cement, txiv qaub, ya tshauv, pob zeb hmoov, thiab lwm yam) thiab polymer-hloov emulsified asphalt, cov khoom siv sab nraud thiab dej hauv ib qho kev faib ua feem. Sib tov nws mus rau hauv ib qho dej sib tov thiab ces sib npaug sib npaug ntawm cov txheej sealing ntawm txoj kev.
Kev soj ntsuam ntawm cov qauv pavement thiab ua rau cov kab mob pavement
(1) Tswj cov khoom siv raw zoo
Thaum lub sij hawm tsim kho, kev tswj cov ntaub ntawv raw (coarse aggregate diabase, fine aggregate diabase powder, modified emulsified asphalt) pib nrog cov ntaub ntawv nkag los ntawm tus neeg muag khoom, yog li cov ntaub ntawv muab los ntawm tus neeg muag khoom yuav tsum muaj daim ntawv tshaj tawm kev xeem. Tsis tas li ntawd, cov ntaub ntawv raug tshuaj xyuas zoo raws li cov qauv tsim nyog. Thaum lub sij hawm tsim kho, qhov zoo ntawm cov khoom siv raw yuav tsum tau soj ntsuam. Yog tias muaj kev tsis ntseeg, qhov zoo yuav tsum raug kuaj xyuas. Tsis tas li ntawd, yog tias pom muaj kev hloov pauv ntawm cov khoom siv raw, cov ntaub ntawv tuaj txawv teb chaws yuav tsum tau rov kuaj dua.
(2) Tswj cov slurry sib xws
Nyob rau hauv tus txheej txheem ntawm proportioning, cov dej tsim ntawm cov slurry sib tov tau txiav txim. Txawm li cas los xij, raws li kev cuam tshuam ntawm cov av noo ntawm qhov chaw, cov dej noo ntawm qhov sib sau, qhov kub thiab txias ntawm ib puag ncig, cov dej noo ntawm txoj kev, thiab lwm yam, qhov chaw feem ntau yuav tsum tau kho cov slurry raws li qhov tseeb. Tus nqi ntawm cov dej siv hauv cov slurry mix yog kho me ntsis kom tswj tau qhov sib xws ntawm qhov sib tov haum rau kev xav tau paving.
(3) Micro-surface demulsification lub sij hawm tswj
Thaum lub sij hawm txoj kev loj micro-surfacing txheej txheem, ib qho laj thawj tseem ceeb rau cov teeb meem zoo yog tias lub sij hawm demulsification ntawm slurry sib tov yog ntxov dhau.
Lub thickness tsis sib xws, khawb, thiab kev tsis sib haum xeeb ntawm asphalt tshwm sim los ntawm demulsification yog txhua yam tshwm sim los ntawm demulsification ntxov ntxov. Nyob rau hauv cov nqe lus ntawm daim ntawv cog lus ntawm lub sealing txheej thiab txoj kev nto, premature demulsification kuj yuav heev detrimental rau nws.
Yog tias nws pom tias qhov sib tov yog demulsified ntxov ntxov, qhov tsim nyog tus nqi ntawm retarder yuav tsum tau ntxiv los hloov qhov ntau npaum ntawm cov muab tub lim. Thiab qhib lub qhov dej ua ntej ntub dej los tswj lub sijhawm tawg.
(4) Kev tswj kev sib cais
Thaum lub sij hawm paving txheej txheem ntawm txoj kev loj, kev sib cais tshwm sim vim yog vim li cas xws li nyias paving thickness, tuab sib tov gradation, thiab khij kab txoj hauj lwm (nqus thiab ib tug tej thickness).
Thaum lub sij hawm paving txheej txheem, nws yog ib qhov tsim nyog los tswj lub paving thickness, ntsuas lub paving thickness nyob rau hauv lub sij hawm, thiab ua kom raws sij hawm hloov kho yog tias muaj ib tug tsis txaus. Yog hais tias gradation ntawm cov sib tov yog ntxhib heev, gradation ntawm slurry sib tov yuav tsum tau kho nyob rau hauv lub gradation ntau yam los txhim kho qhov segregation phenomenon ntawm lub micro nto. Nyob rau tib lub sij hawm, txoj kev kos cim yuav tsum tau milled ua ntej paving.
(5) Tswj txoj kev paving thickness
Nyob rau hauv cov txheej txheem paving ntawm txoj kev loj, paving thickness ntawm thinner sib tov yog hais txog 0.95 mus rau 1.25 zaug. Hauv kev muab qhab nia ntau, qhov nkhaus yuav tsum nyob ze rau ntawm sab tuab.
Thaum qhov kev faib ua feem ntawm cov aggregates loj nyob rau hauv lub aggregate loj, nws yuav tsum tau muab tso rau thicker, txwv tsis pub lub loj aggregates yuav tsum tau nias rau hauv lub sealing txheej. Ntxiv mus, nws kuj yog ib qho yooj yim ua rau khawb ntawm lub scraper.
Ntawm qhov tsis sib xws, yog tias qhov sib xyaw ua ke tau zoo thaum lub sij hawm kev faib ua feem, ces txoj kev paved yuav tsum tau paved thinner thaum lub sij hawm paving txoj kev loj.
Thaum lub sij hawm tsim kho, lub thickness ntawm paving yuav tsum tau tswj thiab sim kom paub meej tias cov slurry sib tov siv nyob rau hauv txoj kev loj paving. Tsis tas li ntawd, thaum kuaj xyuas, lub vernier caliper tuaj yeem siv ncaj qha ntsuas cov slurry foob ntawm micro-surface ntawm txoj kev loj uas nyuam qhuav pib. Yog tias nws dhau ib qho tuab, lub thawv paver yuav tsum tau kho.
(6) Kev tswj hwm txoj kev loj
Rau micro-surface paving ntawm txoj kev loj, cov txheej txheem lub zog ntawm txoj kev nto yuav tsum tau sim ua ntej. Yog tias xoob, tsis muaj zog, tsis muaj zog, lub qhov dej, slurry, thiab cov kab nrib pleb tshwm, cov xwm txheej no yuav tsum tau kho ua ntej kev sib khi.
Thaum lub sij hawm paving txheej txheem, nco ntsoov kom nws ncaj thiab xyuas kom meej tias cov curbs los yog roadsides yog tib yam. Tsis tas li ntawd, thaum paving, paving dav yuav tsum tau ua kom ntseeg tau, thiab cov pob qij txha yuav tsum tau muab tso kom deb li deb li sai tau ntawm txoj kab kev faib kab kom tswj tau qhov ruaj khov ntawm kev sib xyaw thiab tiv thaiv cov ntaub ntawv los ntawm kev sib cais ntxov hauv lub thawv paving kom ntseeg tau tias lawv yog Tus nqi ntawm cov dej thaum lub sij hawm tus txheej txheem yog txawm thiab nruab nrab.
Tsis tas li ntawd, tag nrho cov ntaub ntawv yuav tsum tau soj ntsuam thaum lub sij hawm thauj khoom kom tshem tawm cov khoom loj, thiab cov khoom tsis xws luag yuav tsum tau smoothed nyob rau hauv lub sij hawm thaum lub sij hawm filling kom lawv cov tsos du thiab zoo ib yam.
(7) Tswj kev qhib tsheb
Kev kuaj khau khiab yog ib txoj hauv kev uas siv los soj ntsuam rau txoj kev loj qhib qhov zoo thaum lub sij hawm tu micro-surface. Qhov ntawd yog hais tias, muab tus neeg lub cev hnyav rau ntawm lub hauv paus lossis hauv qab ntawm ib lub khau thiab sawv ntawm cov txheej sealing rau ob feeb. Yog tias qhov sib sau tsis raug coj tawm los yog daig rau tus neeg lub khau thaum tawm hauv cov txheej txheej sealing, nws tuaj yeem suav tias yog micro nto. Tom qab kev txhim kho kev ua haujlwm tiav, nws tuaj yeem qhib rau kev khiav tsheb.