Nyob rau hauv niaj hnub kev thauj mus los network,asphalt pavements, nrog rau lawv cov smoothness zoo heev, skid resistance, thiab adaptability rau ntau yam huab cua, tau dhau los ua cov kev daws teeb meem rau kev tsim kho hauv nroog thiab nyob deb nroog. Los ntawm cov av noo thiab kub yav qab teb toj mus rau qhov txias sab qaum teb, txoj kev asphalt, nrog rau lawv cov kev tsim kho kom zoo thiab yooj yim tom qab- kev saib xyuas kev tsim kho, txhawb nqa cov kev xav tau tseem ceeb ntawm kev thauj mus los thiab kev thauj mus los txhua hnub. Kev tsim kho ntawm txoj kev asphalt tsis yog tsuas yog paving xwb; nws yog ib qhov systematic project integrating kev soj ntsuam thiab kev npaj, meej kev tsim kho, thiab kev tswj nruj. Nws cov txheej txheem tseem ceeb tuaj yeem muab faib ua plaub theem tseem ceeb, txhua qhov sib cuam tshuam thiab ncaj qha txiav txim siab txoj kev ua neej nyob thiab kev nyab xeeb ntawm kev tsheb.
Kev Tshawb Fawb Ua Ntej thiab Tsim
Thawj kauj ruam hauv kev tsim txoj kev asphalt yog ua kom tiav cov kev npaj ua ntej. Lub hauv paus ntawm theem no yog nyob rau hauv kev sib koom ua ke ntawm kev soj ntsuam thiab tsim qauv. Pab neeg tsim kho yuav tsum xub ua ib qho kev soj ntsuam ntawm qhov chaw ntawm txoj kev kom paub meej txog geological tej yam kev mob, underground pipeline faib, ib puag ncig hydrological ib puag ncig, thiab kev khiav dej num raws li txoj cai, tsis txhob muaj teeb meem ntawm kev tsim kho tom qab thiab cov chaw uas twb muaj lawm. Raws li cov ntaub ntawv tshawb fawb, cov txheej txheem tsim qauv yuav tsum txiav txim siab cov ntsiab lus tseem ceeb xws li qib kev, cov txheej txheem pavement txheej thickness, thiab asphalt sib tov hom. Ib txhij, nws yuav tsum tau npaj cov chaw txhawb nqa xws li cov kav dej thiab lub xub pwg dav kom ntseeg tau tias cov qauv ua tau raws li cov qauv kev tsim vaj tsev thiab tsim nyog rau kev siv tiag tiag.
Khoom siv, khoom siv, thiab kev npaj neeg ua haujlwm
Tom qab cov txheej txheem ua ntej tau txiav txim siab, kev npaj ua tiav kev tsim kho yuav tsum tau pib. Hais txog cov ntaub ntawv, cov ntaub ntawv tseem ceeb xws li asphalt thiab aggregates yuav tsum nruj me ntsis xaiv los xyuas kom meej tias cov ntsuas xws li asphalt nkag mus thiab softening point raws li cov qauv, thiab cov gradation sib sau ua tau raws li cov qauv tsim. Kev sim sib xyaw thiab kev ntsuas kev ua haujlwm ntawm qhov sib tov yuav tsum ua kom tiav ua ntej. Kev npaj cov khoom siv tsom mus rau cov theem tseem ceeb ntawm kev tsim kho, suav nrog kev ua haujlwm thiab kev saib xyuas cov cuab yeej tseem ceeb xws li asphalt pavers, ob npaug - nruas rollers, thiab asphalt mixing nroj tsuag kom ntseeg tau tias kev tsim kho tas mus li thiab ua haujlwm tau zoo. Hais txog cov neeg ua haujlwm, ib pab neeg tsim kho yuav tsum tau tsim, nrog rau lub luag haujlwm meej rau txhua txoj haujlwm, thiab cov lus qhia luv luv thiab kev cob qhia kev nyab xeeb ua tiav kom tsis txhob muaj kev ua haujlwm yuam kev thaum tsim kho.
Ntawm -Qhov Kev Tsim Kho Kev Ua Haujlwm ntawm qhov chaw
Kev tsim kho tiag tiag yog theem tseem ceeb ntawm kev tsim kho asphalt thiab yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "kev kho mob hauv paus-paving-compaction." Ua ntej, lub hauv paus subgrade yog leveled thiab compacted los xyuas kom meej nws cov kabmob muaj peev xwm ua tau raws li cov qauv thiab tiv thaiv tom qab pavement kev daws teeb meem. Tom qab ntawd, preheated asphalt sib tov yog thauj mus rau qhov chaw thiab kis ntawm ib tug sib xws ceev siv paver, tswj lub paving thickness thiab ceev tsis tu ncua. Tom qab paving, ib txoj kev rau cov menyuam siv tam sim ntawd rau thawj zaug, theem nrab, thiab zaum kawg compaction los xyuas kom meej qhov sib tov ntom tau raws li cov qauv thiab cov pavement smoothness raws li qhov yuav tsum tau ua. Kub thiab compaction yuav tsum tau saib xyuas nyob rau hauv lub sij hawm ntawm kev tsim kho, thiab kev tsim kho tsis tau kho tam sim ntawd.
Ncej -Kev Txhim Kho Kev Tsim Kho thiab Kev Txais Tsheb
Tom qab asphalt pavement paving, nws tsis yog tam sim ntawd qhib rau kev khiav tsheb; yuav tsum muaj kev tshaj tawm nruj heev - kev tsim kho thiab kev lees txais yuav tsum tau ua. Thaum lub sijhawm tu, ntu txoj kev yuav tsum raug kaw kom cia cov asphalt sib tov kom txias thiab tawv. Nyob rau tib lub sijhawm, cov khib nyiab yuav tsum tau muab tshem tawm ntawm txoj kev, thiab qhov tsis xws li cov kab nrib pleb thiab shoving raug tshuaj xyuas, nrog rau cov teeb meem hauv cheeb tsam kho tam sim ntawd. Tom qab lub sijhawm txij nkawm, kev lees paub kev soj ntsuam ntawm pavement smoothness, compaction, thiab thickness siv cov cuab yeej kuaj kev tshaj lij. Thaum ua tau raws li cov qauv, daim ntawv tso cai tsheb yuav raug muab tso tawm. Tsis tas li ntawd, tom qab qhib rau kev khiav tsheb, yuav tsum tau tsim kom muaj kev saib xyuas tsis tu ncua kom daws tau qhov teeb meem ntawm txoj kev pavement thiab txuas ntxiv txoj kev siv lub neej. Hauv cov ntsiab lus, kev tsim kho asphalt yog ib txoj haujlwm ua haujlwm uas hais txog kev tsim qauv thiab kev ua kom zoo. Txhua kauj ruam, los ntawm kev npaj pib mus rau kev saib xyuas tom ntej, yuav tsum muaj kev tshaj lij thev naus laus zis thiab kev tswj hwm nruj kom tsim kom muaj - txoj kev zoo uas ua ke nrog kev nyab xeeb thiab kav ntev.