Rau microsurfacing, txhua qhov sib xyaw ua ke tsim yog qhov kev sim ua tau zoo, uas cuam tshuam los ntawm ntau qhov sib txawv xws li emulsified asphalt thiab aggregate hom, aggregate gradation, dej thiab emulsified asphalt npaum li cas, thiab hom mineral fillers thiab additives. . Yog li ntawd, nyob rau ntawm qhov chaw simulation kev soj ntsuam ntawm cov qauv kuaj nyob rau hauv tej yam xws li engineering tej yam kev mob tau dhau los ua tus yuam sij rau kev soj ntsuam kev ua tau zoo ntawm micro-surface mixs. Ntau qhov kev sim uas siv feem ntau yog qhia raws li hauv qab no:
1. Kev sib xyaw ua ke
Lub hom phiaj tseem ceeb ntawm kev sib xyaw ua ke yog simulate qhov chaw ua haujlwm paving. Kev sib raug zoo ntawm emulsified asphalt thiab aggregates raug txheeb xyuas los ntawm lub xeev molding ntawm micro-surface, thiab lub sijhawm sib xyaw tshwj xeeb thiab raug. Yog tias lub sijhawm sib tov ntev dhau lawm, txoj kev nto yuav tsis ncav cuag lub zog thaum ntxov thiab nws yuav tsis qhib rau kev khiav tsheb; Yog hais tias lub sij hawm sib tov luv dhau, qhov kev tsim kho paving yuav tsis du. Kev tsim kho ntawm micro-surfacing yog yooj yim cuam tshuam los ntawm ib puag ncig. Yog li ntawd, thaum tsim cov khoom sib tov, lub sij hawm sib tov yuav tsum tau sim nyob rau hauv qhov tsis zoo kub uas yuav tshwm sim thaum tsim kho. Los ntawm kev ntsuam xyuas kev ua tau zoo, cov xwm txheej cuam tshuam rau kev ua haujlwm ntawm micro-surface sib tov raug tshuaj xyuas tag nrho. Cov lus xaus tau kos raws li hauv qab no: 1. Kub, qhov kub thiab txias ib puag ncig tuaj yeem txo lub sijhawm sib xyaw; 2. Emulsifier, qhov ntau dua ntawm cov tshuaj emulsifier, lub sijhawm sib xyaw ntev dua; 3. Cement, ntxiv cov cement tuaj yeem txuas ntxiv lossis ua kom luv luv ntawm qhov sib xyaw. Lub sijhawm sib xyaw yog txiav txim siab los ntawm cov khoom ntawm emulsifier. Feem ntau, qhov ntau dua, lub sijhawm sib tov luv dua. 4. Cov dej sib tov ntau dua, qhov sib xyaw dej ntau dua, lub sijhawm sib xyaw ntev dua. 5. Tus nqi pH ntawm cov tshuaj xab npum feem ntau yog 4-5 thiab lub sijhawm sib tov yog ntev. 6. Qhov ntau dua qhov zeta peev xwm ntawm emulsified asphalt thiab ob chav hluav taws xob txheej txheej ntawm emulsifier, lub sijhawm sib tov ntev dua.

2. Adhesion xeem
Feem ntau yog kuaj lub zog thaum ntxov ntawm micro nto, uas tuaj yeem ntsuas qhov ntsuas lub sijhawm pib. Lub zog thaum ntxov txaus yog qhov yuav tsum tau ua ua ntej los xyuas kom meej lub sijhawm qhib rau kev khiav tsheb. Lub adhesion Performance index yuav tsum tau soj ntsuam tag nrho, thiab ntsuas qhov adhesion tus nqi yuav tsum tau ua ke nrog cov xwm txheej puas tsuaj ntawm tus qauv los txiav txim rau lub sijhawm pib thiab qhib lub sijhawm ntawm kev sib tov.
3. Wet log hnav kuaj
Qhov kev ntsuam xyuas lub log ntub dej simulates txoj kev muaj peev xwm tiv thaiv log tsheb thaum ntub.
Kev kuaj ib-teev ntub lub log puas tuaj yeem txiav txim siab qhov cuam tshuam ntawm microsurface functional txheej thiab txheej txheej ntawm asphalt thiab aggregate. Cov dej puas tsis kam ntawm micro-nto hloov emulsified asphalt sib tov yog sawv cev los ntawm 6-hnub hnav tus nqi, thiab cov dej yaig ntawm cov sib tov yog tshuaj xyuas los ntawm cov txheej txheem ntub dej ntev. Txawm li cas los xij, kev puas tsuaj ntawm cov dej tsis yog tsuas yog cuam tshuam los ntawm kev hloov pauv ntawm asphalt membrane, tab sis kuj yog qhov kev hloov pauv ntawm lub xeev theem ntawm cov dej tuaj yeem ua rau muaj kev puas tsuaj rau qhov sib xyaw. 6-hnub immersion abrasion test tsis suav nrog qhov cuam tshuam ntawm lub voj voog khov-thaw ntawm cov dej ntawm cov ore hauv qhov chaw khov raws caij nyoog. Frost heave thiab tev tawm tshwm sim los ntawm asphalt zaj duab xis rau ntawm cov khoom. Yog li ntawd, raws li 6-hnub dej immersion ntub log abrasion xeem, nws yog npaj los txais yuav lub freeze-thaw voj voog ntub log abrasion xeem kom ntau muaj kev cuam tshuam cov kev tsis zoo ntawm cov dej nyob rau hauv lub micro-surface sib tov.
4. Rutting deformation xeem
Los ntawm kev xeem rutting deformation, lub log khiav dav deformation tus nqi tuaj yeem tau txais, thiab qhov muaj peev xwm tiv thaiv rutting ntawm micro-surface sib tov tuaj yeem ntsuas. Qhov me dua qhov dav deformation tus nqi, lub zog muaj peev xwm tiv thaiv rutting deformation thiab qhov zoo dua qhov kub siab stability; conversely, qhov phem lub peev xwm los tiv thaiv rutting deformation. Txoj kev tshawb nrhiav pom tias lub log khiav dav deformation tus nqi muaj qhov sib raug zoo nrog cov ntsiab lus emulsified asphalt. Qhov ntau dua cov emulsified asphalt cov ntsiab lus, qhov phem qhov rutting tsis kam ntawm micro-surface sib tov. Nws tau taw qhia tias qhov no yog vim tias tom qab cov polymer emulsified asphalt tau muab tso rau hauv cov cement-based inorganic binder, elastic modulus ntawm polymer yog qis dua li cov cement. Tom qab cov tshuaj tiv thaiv compound, cov khoom ntawm cov khoom siv cementitious hloov, ua rau txo qis tag nrho cov rigidity. Yog li ntawd, log khiav deformation nce. Ntxiv nrog rau cov kev ntsuam xyuas saum toj no, cov xwm txheej sib txawv yuav tsum tau teeb tsa raws li cov xwm txheej sib txawv thiab cov kev ntsuas sib txawv sib txawv yuav tsum tau siv. Hauv kev tsim kho tiag tiag, qhov sib xyaw ua ke, tshwj xeeb tshaj yog cov dej siv ntawm cov sib tov thiab cov cement noj, tuaj yeem hloov kho raws li cov huab cua sib txawv thiab qhov kub thiab txias.
Xaus: Raws li kev tiv thaiv kev siv thev naus laus zis, micro-surfacing tuaj yeem txhim kho kev ua tau zoo ntawm txoj kev pavement thiab tshem tawm cov kev cuam tshuam ntawm ntau yam kab mob ntawm txoj kev pavement. Nyob rau tib lub sijhawm, nws muaj tus nqi qis, siv sijhawm luv luv thiab kev saib xyuas zoo. Tsab ntawv xov xwm no tshuaj xyuas qhov sib xyaw ntawm micro-surfacing mixs, txheeb xyuas lawv qhov cuam tshuam rau tag nrho, thiab qhia luv luv thiab nthuav qhia cov kev ntsuas kev ua tau zoo ntawm micro-surfacing mixs hauv cov kev qhia tshwj xeeb tam sim no, uas muaj cov txiaj ntsig zoo rau kev tshawb fawb yav tom ntej.
Txawm hais tias micro-surfacing thev naus laus zis tau dhau los ua neeg paub tab, nws tseem yuav tsum tau tshawb fawb ntxiv thiab tsim los txhim kho qib kev ua haujlwm kom zoo dua qub thiab txhim kho cov kev ua tau zoo ntawm txoj kev loj thiab ua tau raws li cov kev xav tau ntawm kev khiav tsheb. Tsis tas li ntawd, thaum lub sij hawm micro-surfacing txheej txheem, ntau yam sab nraud muaj feem cuam tshuam ncaj qha rau qhov zoo ntawm qhov project. Yog li ntawd, cov kev tsim kho tiag tiag yuav tsum raug txiav txim siab thiab ntau qhov kev saib xyuas kev tshawb fawb yuav tsum raug xaiv los xyuas kom meej tias kev tsim kho micro-surfacing tuaj yeem siv tau yooj yim thiab ua tiav txhawm rau txhim kho cov txiaj ntsig kev saib xyuas.