Kuti ipinde yakavimbika uye nekukurumidza mukati mekushandisa, bhitumeni emulsion inongoderedzwa bhitumini. Inoshandiswa zvakanyanya kune akasiyana maapplication mumaindasitiri ekuvaka. Kurapwa kwepamusoro kunoitwa kuti ive nechokwadi chekuti chikamu chekunze chegwara kana nzira yakachengetedzwa yakachengeteka kubva mumvura kana kupinza hunyoro. Inodzivisa skids uye inochengetedza migwagwa mikuru. Kuita uku kunokanganiswa neaggregate factor, emulsion kuenderana, uye tembiricha.

Bitumen Emulsion inogadzirwa sei?
Bitumen emulsion inogadzirwa mumatanho maviri akareruka. Mvura inotanga kusanganiswa ne emulsifying agent uye mamwe makemikari anoshandiswa. Zvadaro, chigayo checolloidal chinoshandiswa kubatanidza mvura, emulsifier, uye bhitumini. Zvichienderana nekuguma-kushandiswa kwebitumen emulsion, huwandu hwebhitumu hunowedzerwa kumusanganiswa. Kana iyo emulsifier iri kugadzirwa sechinhu chakakosha chigadzirwa, inogona kushandiswa pakati pe60-70%.

Yakajairika huwandu hwebhitumini yakawedzerwa kumusanganiswa iri pakati pe40% ne70%. Chigayo checolloidal chinoparadzanisa bhitumini kuita twudiki diki. Avhareji yemadonhwe saizi ingangoita 2 microns. Asi madonhwe anoedza kugadzikana uye kubatana. Iyo emulsifier, nekudaro yakawedzerwa, inogadzira yekubikira kwechaji yepasi yakatenderedza donhwe rega rega rebhitumini iro, kune rimwe divi, rinobatsira kuti madonhwe aende kure kubva kune mumwe. Musanganiswa unowanikwa kubva pachigayo checolloidal unogadziriswa uye unoshandiswa maererano nemirairo uye gare gare unochengetwa mumatangi ekuchengetedza.

Mhando dzeBitumen:
Iyo bitumen emulsion yakakamurwa mumhando mbiri:
Kubva pakuronga nguva
Kubva pane yepamusoro charge

Kubva paKuisa Nguva
Kana emulsions yebhitumen yakawedzerwa kune aggregates, mvura inoputika, uye solvent inobviswa. Ipapo bhitumini inoyerera pamusoro peaggregate base, inoshanda sechinhu chinosunga uye inozvisimbisa zvishoma nezvishoma. Iyi nzira yakakamurwa kuita mapoka matatu anotevera, zvichienderana nekumhanya kwemvura inoputika uye zvimedu zvebhitumini zvinopararira kubva mumvura:
Rapid Setting Emulsion (RS)
Medium Setting Emulsion (MS)
Slow Setting Emulsion (SS)

Bhitumeni inoreva kutsemuka nyore nyore sezvo emulsion iri kukurumidza kuisa mhando yeemulsion. Iyi fomu ye emulsion inogadzirisa nyore uye inoporesa. Kana yangoiswa paaggregates, emulsions yepakati yekumisikidza haina kuputika zvisingatarisirwi. Zvisineyi, kana mamineral's coarse shards asanganiswa neaggregate emulsifier musanganiswa, kutyora kunotanga. Slow setting emulsions inogadzirwa nerubatsiro rwemhando yakakosha ye emulsifier iyo inononoka kugadzirisa maitiro. Aya mafomu emulsion akasimba kwazvo.

Kubva pane Surface Charge
Bitumen emulsions yakakamurwa zvakanyanya mumapoka matatu anotevera zvichienderana nerudzi rwekuchaja pamusoro:
Anionic Bitumen Emulsion
Cationic Bitumen Emulsion
Kwete-Ionic Bitumen Emulsion

Bitumen particles is electro-negatively charged in case of anionic bitumen emulsion, asi munyaya ye cationic emulsions, bituminous particles i electro-positive. Nhasi, cationic emulsion yebhitumen inoshandiswa kakawanda. Kubva pamaminerari ekuumbwa kweaggregate inoshandiswa pakuvaka, zvakakosha kutora emulsion yebhitumen. Kuumbwa kweaggregates kunova electro-negatively charged muzviitiko zvesilica-rich aggregates. A cationic emulsion inofanira, naizvozvo, kuwedzerwa. Izvi zvinobatsira kuparadzira bhitumini uye kuisanganisa neaggregates zvakanyanya. Kune mhinduro dzine aqueous, asiri-ionic surfactants haakwezve maion. Solubility inobva pakuvapo kwepolar molecules. Kushandiswa kwemanonionic surfactants se emulsifier, kunyange zvazvo isiri mumvura chete, asi muchikamu chebhitumini, sezvatsanangurwa pamusoro apa, inonakidza zvikuru sezvo ichienderana nevose vanoita ion surfactants.

Hapana emulsion yemhando ipi zvayo yakakwana kune rimwe nerimwe basa; zvinoenderana ne acidic kana basic nature yeaggregate. Kubva pane tembiricha yemhepo, kumhanya kwemhepo uye saizi emulsion, nguva yekumisikidza inogona kusiyana. Kugona kwekuchengetedza kushoma. Iro kupatsanurwa kuri pamusoro ndiro gwara rekusarudza mutambo wakakodzera kune zvaunoda.