Txoj kev kho thiab tu cov khoom siv asphalt txias thaj yog cov khoom siv kho txoj kev zoo thiab yooj yim. Hauv qab no yog cov lus qhia ntxaws:
1. Txhais thiab muaj pes tsawg leeg
Asphalt txias patching khoom, tseem hu ua txias patching khoom, txias patching asphalt sib tov los yog txias mix asphalt khoom, yog ib tug patching khoom muaj li ntawm matrix asphalt, cais tus neeg saib xyuas, tshwj xeeb additives thiab aggregates (xws li gravel). Cov ntaub ntawv no tau sib xyaw ua ke raws li ib qho kev faib ua feem hauv cov khoom siv asphalt sib xyaw ua "asphalt txias ntxiv cov kua dej", thiab tom qab ntawd tov nrog cov khoom sib xyaw kom txog thaum kawg ua cov khoom tiav.
2. Nta thiab qhov zoo
Hloov kho, tsis yog thermoplastic kiag li: Asphalt txias patch khoom yog hloov kho asphalt sib tov, uas muaj qhov zoo ntawm kev txhaj tshuaj ncaj qha thiab kev ua haujlwm siab.
Kev ruaj ntseg zoo: Ntawm qhov kub thiab txias, asphalt txias thaj khoom yog kua thiab tuab, nrog cov khoom ruaj khov. Nws yog cov khoom siv tseem ceeb rau kev tsim khoom txias.
Kev siv dav dav: Nws tuaj yeem siv nruab nrab ntawm -30 ℃ thiab 50 ℃, thiab tuaj yeem siv txhua lub sijhawm huab cua. Nws yog qhov tsim nyog rau kev kho ntau yam ntawm txoj kev ntawm txhua qhov huab cua thiab ib puag ncig, xws li asphalt, cement qhob txoj kev, chaw nres tsheb, tshav dav hlau khiav, thiab txuas hniav. Cov xwm txheej xws li cov pob qij txha nthuav dav, cov pas dej ntawm txoj kev loj, txoj kev loj hauv tebchaws thiab lub xeev thiab txoj kev loj hauv nroog, hauv zej zog excavation thiab filling, pipeline backfilling, thiab lwm yam.
Tsis muaj cua sov yuav tsum tau: Piv nrog kub sib tov, asphalt txias patch khoom siv tau yam tsis muaj cua sov, txo lub zog noj thiab emissions.
Yooj yim rau kev khiav lag luam: Thaum siv, tsuas yog ncuav cov khoom txias txias rau hauv lub pits thiab compact nws nrog lub duav lossis cov cuab yeej compaction.
Kev ua tau zoo heev: Asphalt txias patch khoom muaj siab adhesion thiab cohesion, tuaj yeem tsim cov qauv tag nrho, thiab tsis yooj yim rau tev thiab txav mus.
Kev cia yooj yim: Cov khoom siv tsis siv asphalt txias thaj tuaj yeem muab kaw rau kev siv tom ntej.

3. Cov kauj ruam ntawm kev tsim kho
Kev tu lub lauj kaub: Txiav txim siab qhov chaw ntawm qhov khawb av, thiab zeb los yog txiav cov cheeb tsam ib puag ncig. Ntxuav cov pob zeb thiab cov khib nyiab pov tseg nyob rau hauv thiab ib ncig ntawm lub qhov yuav tsum tau kho kom txog thaum pom cov khoom thiab cov khoom seem. Nyob rau tib lub sijhawm, yuav tsum tsis txhob muaj av nkos, dej khov lossis lwm yam khib nyiab hauv lub qhov. Thaum grooving, lub hauv paus ntsiab lus ntawm "square kho rau puag ncig pits, ncaj qha kho rau inclined pits, thiab ua ke kho rau cov pits tas mus li" yuav tsum tau ua raws li los xyuas kom meej tias cov kho pits muaj zoo ntug.
Txhuam interface ntug sealer / emulsified asphalt: Txhuam tus neeg saib xyuas interface / emulsified asphalt tusyees ntawm lub ntsej muag thiab hauv qab ib ncig ntawm lub qhov ntxuav, tshwj xeeb tshaj yog nyob ib ncig ntawm lub qhov thiab cov ces kaum ntawm lub qhov. Tus nqi pom zoo yog 0.5 kg ib square meter los txhim kho qhov haum ntawm cov pavement tshiab thiab qub thiab txhim kho cov dej tsis zoo thiab dej tsis zoo ntawm cov pavement pob qij txha.
Sau lub qhov: Sau cov khoom siv asphalt txias rau hauv lub qhov kom txog thaum lub qhov muab tub lim yog li 1.5 cm siab tshaj hauv av. Thaum kho txoj kev hauv nroog, cov tswv yim ntawm cov ntaub ntawv txias tuaj yeem nce li ntawm 10% lossis 20%. Tom qab sau, qhov nruab nrab ntawm lub qhov dej yuav tsum siab me ntsis siab tshaj qhov chaw nyob ib puag ncig thiab nyob rau hauv ib qho arc duab. Yog hais tias qhov tob ntawm lub qhov ntawm txoj kev nto yog ntau tshaj 5 cm, nws yuav tsum tau sau nyob rau hauv cov khaubncaws sab nraud povtseg thiab compacted txheej los ntawm txheej, nrog rau 3 mus rau 5 cm ib txheej yog tsim nyog.
Compaction: Tom qab paving sib npaug, xaiv cov cuab yeej compaction tsim nyog thiab txoj hauv kev rau compaction raws li qhov tseeb ib puag ncig, qhov loj thiab qhov tob ntawm qhov chaw kho. Rau cov pas dej nrog cov cheeb tsam loj, cov menyuam tuaj yeem siv rau kev cog lus; rau cov poholes nrog thaj chaw me me, lub tshuab hlau tamping tuaj yeem siv rau kev cog lus. Tom qab compaction, thaj chaw kho yuav tsum muaj tus du, tiaj tus nto tsis muaj log, thiab qhov chaw nyob ib puag ncig thiab cov ces kaum ntawm lub qhov dej yuav tsum tau compacted thiab tsis xoob. Yog tias muaj kev tso cai, paver tuaj yeem siv rau kev ua haujlwm. Yog tias lub tshuab paving tsis muaj, lub forklift tuaj yeem siv los nqa lub hnab ntim, qhib qhov chaw nres nkoj hauv qab, thiab thim rov qab kev tsim kho. Thaum tso cov khoom, manually scrape nws tiaj tus thiab ua raws li cov thawj dov. Tom qab dov, txias nws li 1 teev. Nyob rau lub sijhawm no, pom kev pom tias tsis muaj cov kua dej txias sib xyaw rau saum npoo los yog xyuam xim rau lub log hub cim thaum dov. Yog tias tsis muaj qhov txawv txav, cov menyuam me tuaj yeem siv rau qhov kawg dov. Qhov thib ob dov yuav nyob ntawm seb qhov degree ntawm solidification. Yog tias ntxov dhau, yuav muaj cov cim log. Yog tias nws lig dhau lawm, qhov flatness yuav raug cuam tshuam los ntawm kev sib zog ntawm txoj kev nto. Manually randomly luas cov npoo thiab ua tib zoo saib seb puas muaj log sticking. Yog hais tias muaj log sticking, cov menyuam yuav ntxiv cov dej xab npum los lubricate nws kom tshem tawm cov khoom daig rau lub log steel. Yog hais tias lub log sticking tshwm sim loj heev, ncua lub sij hawm txias kom tsim nyog. Tom qab ntxuav thiab compaction, ib txheej ntawm pob zeb hmoov los yog cov xuab zeb zoo tuaj yeem sib npaug ntawm qhov chaw, thiab cheb rov qab nrog cov cuab yeej tu kom cov xuab zeb zoo tuaj yeem sau cov qhov khoob. Qhov saum npoo ntawm qhov chaw kho yuav tsum yog du, tiaj tus, thiab tsis muaj cov cim log. Cov ces kaum nyob ib ncig ntawm lub qhov yuav tsum tau compacted thiab yuav tsum tsis muaj looseness. Lub compaction degree ntawm kev kho txoj kev zoo tib yam yuav tsum ncav cuag ntau tshaj 93%, thiab lub compaction degree ntawm kev loj kho yuav tsum ncav cuag ntau tshaj 95%.
Qhib kev khiav tsheb: Cov neeg taug kev thiab tsheb tuaj yeem hla tom qab thaj chaw kho kom ruaj khov thiab ua tau raws li cov xwm txheej rau kev qhib tsheb. Cov neeg taug kev tuaj yeem hla tom qab dov ob mus rau peb zaug thiab cia nws sawv ntsug li 1 mus rau 2 teev, thiab cov tsheb tuaj yeem qhib rau kev khiav tsheb nyob ntawm kev kho ntawm txoj kev.
IV. Daim ntawv thov scenarios
Asphalt txias patch khoom yog dav siv los sau cov kab nrib pleb, kho cov qhov dej thiab kho qhov chaw tsis sib xws, muab kev kho kom ntev thiab muaj zog. Nws tuaj yeem siv rau kev saib xyuas kev ua haujlwm ntawm txhua theem, xws li txoj kev loj, txoj kev hauv nroog, kev nthuav dav, txoj kev hauv tebchaws, txoj kev hauv nroog, thiab lwm yam. Tsis tas li ntawd, nws kuj tseem tsim nyog rau kev saib xyuas cov chaw nres tsheb, tshav dav hlau khiav, choj pavements, kev tsim kho tshuab thiab kev sib cuag qhov chaw, nrog rau kev tso cov kav dej trench thiab lwm qhov chaw.
Hauv cov ntsiab lus, kev kho thiab kev saib xyuas cov khoom siv asphalt txias thaj yog cov khoom siv kho txoj kev uas muaj kev ua tau zoo thiab kev tsim kho yooj yim, thiab muaj cov ntawv thov dav dav.