Bakeng sa ho kenella ka mokhoa o tšepahalang le o potlakileng nakong ea kopo, li-emulsion tsa bitumen li na le sekontiri se hlapolotsoeng feela. E sebelisoa haholo bakeng sa likopo tse fapaneng liindastering tsa kaho. Phekolo ea holim'a metsi e etsoa ho etsa bonnete ba hore karolo e ka ntle ea tsela kapa tsela e katiloeng e bolokoa e sireletsehile ho kena metsing kapa mongobo. E hanela ho thella le ho sireletsa litsela tse kholo. Tshebetso leha ho le joalo e susumetsoa ke lintlha tse akaretsang, ho tsitsa ha emulsion, le mocheso.

Emulsion ea Bitumen e etsoa joang?
Emulsion ea sekontiri e etsoa ka mehato e 'meli e bonolo. Metsi a qala ho kopanngoa le moemeli oa emulsifying le lisebelisoa tse ling tsa lik'hemik'hale. Joale, ho sebelisoa leloala la colloidal ho kopanya metsi, emulsifier le bitumen. Ho itšetlehile ka tšebeliso ea ho qetela ea emulsion ea sekontiri, bongata ba sekontiri bo kenngoa motsoako. Ha emulsifier e ntse e etsoa e le sehlahisoa sa bohlokoa, e ka sebelisoa pakeng tsa 60-70%.

Palo e tloaelehileng ea sekontiri e kentsoeng motsoakong e pakeng tsa 40% le 70%. Leloala la colloidal le arola sekontiri ka likaroloana tse nyenyane haholo. Ka karolelano boholo ba marotholi ke li-microns tse 2. Empa marotholi a leka ho tsitsa le ho kopana. Emulsifier, ka hona, e eketsoa, ​​​​e hlahisa sekoaelo sa tefiso ea bokaholimo ho potoloha lerotholi le leng le le leng la sekontiri seo, ka lehlakoreng le leng, se thusang ho boloka marotholi hole le a mang. Motsoako o fumanoeng leloaleng la colloidal o sebetsoa le ho sebelisoa ho latela litataiso ebe hamorao o bolokoa ka litankang tsa polokelo.

Mefuta ea Bitumen:
Emulsion ea bitumen e arotsoe ka mefuta e 'meli:
E ipapisitse le nako e behiloeng
E thehiloe holim'a tefiso

E Thehiloe ho Nako ea ho Beha
Haeba li-emulsions tsa bitumen li eketsoa ho li-aggregates, metsi a fetoha mouoane, 'me solvent e tlosoa. Ebe sekontiri se phalla holim'a setsi se kopantsoeng, se sebetsa e le ntho e tlamang 'me butle-butle e imatlafatsa. Ts'ebetso ena e arotsoe ka lihlopha tse tharo tse latelang, ho latela lebelo leo metsi a fetohang mouoane ka lona 'me likaroloana tsa sekontiri li qhalana ho tloha metsing:
Rapid Setting Emulsion (RS)
Medium Setting Emulsion (MS)
Slow Setting Emulsion (SS)

Sekontiri se reretsoe ho robeha habonolo kaha emulsion ke mofuta o potlakileng oa ho beha emulsion. Mofuta ona oa emulsion o beha habonolo ebile oa folisa. Hang ha e behiloe holim'a li-aggregates, li-emulsions tsa boemo bo bohareng ha li phatlohe ka tšohanyetso. Leha ho le joalo, ha likotoana tse mahoashe tsa minerale li kopantsoe le motsoako oa emulsifier o kopantsoeng, mokhoa oa ho senya oa qala. Li-emulsions tse liehang li etsoa ka thuso ea mofuta o khethehileng oa emulsifier e fokotsang mokhoa oa ho beha. Mefuta ena ea emulsion e matla haholo.

E ipapisitse le Surface Charge
Li-emulsion tsa bitumen li arotsoe haholo-holo ka lihlopha tse tharo tse latelang ho itšetlehile ka mofuta oa tefiso ea holim'a metsi:
Emulsion ea Bitumen ea Anionic
Emulsion ea cationic Bitumen
Emulsion ea Bitumen e seng ea Ionic

Likaroloana tsa sekontiri li na le electro-negatively qoso tabeng ea emulsion ea anionic bitumen, athe tabeng ea emulsions ea cationic, likaroloana tsa bituminous li na le electro-positive. Kajeno, emulsion ea cationic ea bitumen e sebelisoa hangata. Ho ipapisitsoe le sebopeho sa liminerale tsa kakaretso e sebelisetsoang ho aha, ho bohlokoa ho khetha emulsion ea sekontiri. Sebopeho sa li-aggregates se fetoha electro-negatively qoso maemong a li-aggregates tse ruileng tsa silica. Ka hona, emulsion ea cationic e lokela ho eketsoa. Sena se thusa ho jala sekontiri le ho se kopanya le li-aggregates ka katleho. Bakeng sa tharollo ea metsi, li-non-ionic surfactants ha li hohele li-ion. The solubility e itšetlehile ka boteng ba limolek'hule tsa polar. Tšebeliso ea li-surfactants tsa nonionic e le emulsifier, le hoja e se feela ts'ebetsong ea metsi, empa karolong ea sekontiri, joalokaha e hlalositsoe ka holimo, e na le thahasello e kholo kaha e lumellana le li-surfactants tsohle tsa ion.

Ha ho emulsion ea mofuta ofe kapa ofe e lekaneng bakeng sa mosebetsi o mong le o mong; e ipapisitse le acidic kapa sebopeho sa mantlha sa kakaretso. Ho ipapisitsoe le mocheso oa moea, lebelo la moea le boholo ba emulsion, nako ea ho beha e ka fapana. Matla a ho boloka a fokola. Sehlopha se ka holimo ke tataiso ea ho khetha papali e nepahetseng bakeng sa litlhoko tsa hau.