Qhov tsis txaus ntseeg ntawm emulsified asphalt manifests nws tus kheej hauv peb daim ntawv: flocculation, agglomeration thiab sedimentation. Thaum emulsified asphalt hais tawg dhau los ntawm electrostatic repulsion ntawm ob lub hluav taws xob txheej thiab sib sau ua ke, nws yog hu ua flocculation. Nyob rau lub sijhawm no, yog tias kev siv tshuab stirring yog ua, cov asphalt hais tau tuaj yeem sib cais dua, uas yog cov txheej txheem rov qab. Tom qab flocculation, cov asphalt txhais uas sib sau ua ke ua ke ua ke ua ke rau hauv cov loj ephalt cuam tshuam, uas yog hu ua Agglomeration. Lub agglomerated asphalt meant tsis tuaj yeem sib cais los ntawm kev siv tshuab yooj yim, thiab cov txheej txheem no yog irreversible. Nrog rau kev nce ua txuas ntxiv ntawm agglomerated hais, qhov me me ntawm asphalt bastes me ntsis nce, thiab cov loj loj uas tau txiav txim siab nyob rau hauv kev txiav txim ntawm kev sib tsoo.

Txhawm rau kom muaj qhov ruaj khov rau ntawm cov lus asphalt, nws yog ib qho tsim nyog los tiv thaiv peb txoj kev tsis txaus ntawm asphalifi asphalt: flocculation, agglomeration thiab sedimentation.
1. Tiv thaiv flocculation thiab agglomeration
Txhawm rau tiv thaiv flocculation thiab agglomeration ntawm emulsified asphalt hais, nws yog ib qho tsim nyog los siv emulsifience science, thiab muab tag nrho cov kev ua si cuam tshuam tag nrho ntawm emulsifiers.
Lub Van der Waals Nyiam uas feem ntau muaj nyob ntawm cov tshuaj yuav ua rau cov asphalt txhais kom ua ke. Txhawm rau tiv thaiv cov asphaltðequles los ntawm agglomerating, cov zaj duab xis interfacial tsim los ntawm emulsifier molecules nyob rau saum npoo ntawm asphaltalal hais yuav tsum tau cia siab. Raws li qhov no, cov kev ntsuas kev kawm ua ke hauv qab no tuaj yeem coj los txhim kho qhov chaw ruaj khov ntawm epulsified asphalt.
(1) Xyuas kom muaj txaus emulsifier tau noj. Tom qab ntxiv surfactants-emulsifiers rau cov asphalt / dej system, lawv yuav tsum adsorb ntawm lub interface los tsim zaj duab xis interfacial thaum txo cov kev cuam tshuam interfacial. Zaj yeeb yaj kiab no muaj qee lub zog thiab tiv thaiv cov asphalt cuam tshuam, ua rau lawv nyuaj rau lawv ua tshuam tom qab kev sib tsoo. Thaum cov emulsifier concentration yog tsawg, lub zog ntawm interfacial zaj duab xis yog me me, thiab kev ruaj ntseg ntawm emulsified as lues neeg tsis zoo. Thaum lub emulsifier tau nce rau theem kev sib txuam, lub zog ntawm cov zaj duab xis interfacial yuav loj, thiab kev ruaj khov ntawm emulsified asphalt yuav zoo tagnrho.
(2) Siv cov khoom sib xyaw emulsifiers. Nws tau pom tias cov yeeb yaj kiab sib xyaw tsim los ntawm kev sib xyaw emulsifieve muaj lub zog sib xyaw ua ke, tsis yooj yim tawg, thiab cov emulsion tsim yog ruaj khov.
(3) Ua kom them nqi zog ntawm cov asphalt txhais. Ionic emulsifiers tuaj yeem them tus nqi asphaltal. Thaum asphalt cov lus yog nyob ze rau ib leeg, cov electrostatic repulsion nruab nrab ntawm cov nqi tuaj yeem tiv taus lub van der willsing thiab tiv thaiv cov asphalt txhais los ntawm kev sib koom ua ke. Yog li ntawd, tus nqi ua kom muaj zog dua ntawm cov asphalt hais, qhov zoo dua qhov chaw khaws khoom ruaj khov ntawm lub emulsified asphalt. Rau cationic emulsified ashrhalt, lub zog zog ntawm cov asphalt hais tau nce los ntawm kev txo qis ntawm cov kua tshuaj tov.
(4) nce viscosity ntawm emulsified asphalt. Nce viscosity ntawm emulsified ashhalt tuaj yeem txo cov diffulus coeffusle thiab txo qhov kev sib tsoo zaus thiab txo qhov kev sib tsoo zaus thiab ua kom muaj txiaj ntsig zoo rau kev ruaj khov ntawm epulsified ashethalt.
(5) lub tshuab tshuab stirring thaum lub sijhawm cia. Tom qab emulsified sprocculates, tshuab siv tshuab stirring tuaj yeem siv los cais cov neeg sib cais asphalt txhais kom tsis txhob agglomeration.
2. Tiv thaiv kev sedimentation
Txhawm rau tiv thaiv cov sedimentation ntawm emulsified asphalt me ​​me, cov hauv qab no yuav coj los daws cov teeb meem.
(1) Nce cov particle zoo kawg ntawm emulsified asphalt thiab txhim kho kev faib cov asphalt cuam tshuam. Qhov loj me thiab faib cov asphalt me ​​me hauv emulsified asphalt muaj ib tug zoo cuam tshuam rau kev ruaj ntseg ntawm emulsified asphalt. Qhov me me ntawm particle loj ntawm asphaltal hais, qhov nqaim qhov loj me faib tau faib, thiab qhov zoo dua qhov ruaj khov ntawm asphalt.
Txhawm rau kom ntseeg tau tias cov asphalt txhais, nws yog ib qho tsim nyog los xaiv cov cuab yeej zoo emulsification, haum emulsifier nrog zoo emulsification muaj peev xwm.
(2) txo qis ntom ntom ntom ntawm asphalt thiab theem dej theem. Cov txheeb ze lub zog ntawm asphalt yog txawv, thiab cov sedimitation daim ntawv ntawm emulsified asphalt tsim kuj txawv. Nyob rau hauv dav dav, emulsified asphalt hais daws hauv kev coj ntawm kev sib tsoo; Thaum lub ntom ntawm cov dej theem yog tsawg dua li qhov ntom ntawm asphalt, cov asphaltaltal yuav "khom" khom "khom" khom "khom". Hauv kev tsim khoom tiag tiag, qee cov chlorides ntxiv rau theem dej los txhim kho kev ruaj ntseg ntawm ayhalt. Ib qho ntawm nws cov txheej txheem yog txhawm rau txhawm rau txo qhov txawv txav ntawm asphalt thiab dej.
(3) nce cov viscosity ntawm cov dej theem thiab emulsified asphalt. Cov kev qhia txuj ci yog tib yam li tau piav saum toj no.