Thesemela sa bitumen se fetotsoeng ka polymere na le melemo ea boleng bo tšepahalang, ts'ebetso e tsitsitseng, tekanyo e nepahetseng le ts'ebetso e bonolo, 'me ke sesebelisoa se secha sa bohlokoahali kahong ea litsela tse kholo.

Matsatsing ana, theknoloji ea sekontiri e fetotsoeng ea polymer e sebelisoa ke mofuputsi le  moetsi oa emulsion ea asphalt ho ntlafatsa ts'ebetso ea asphalt emulsion. Mefuta e fapaneng ea li-polymers e ka sebelisoa ho lokisa polymer  modified asphalt emulsion e kang styrene butadiene styrene (SBS) block copolymer, ethylene vinyl acetate (EVA), polyvinyl acetate (PVA), styrene butadiene rabara (SBR) latex, epoxy resin le rabara ea tlhaho. latex. Polymer e ka eketsoa ho  asphalt emulsion ka litsela tse tharo: 1) mokhoa oa ho kopanya pele, 2) mokhoa oa ho kopanya ka nako e le 'ngoe le 3) mokhoa oa ho kopanya ka morao. Mokhoa oa ho kopanya o na le tshusumetso ya bohlokwa ho phatlalatseng marangrang a polymer mme o tla ama ts'ebetso ea li-emulsion tsa asphalt tse fetotsoeng polymer. Ho ba sieo ha protocol eo ho lumellanoeng ka eona ho lumelletse mekhoa e fapaneng hore e sebelisoe ke lilaboratori tsa liteko e le hore ho ka fumanoa masala a emulsion ea asphalt. Pampiri ena e fana ka kakaretso ea lipatlisiso tse entsoeng ho li-emulsion tsa asphalt tse fetotsoeng ka polymer ho sebelisoa mefuta e fapaneng ea polymer le ts'ebetso ea ts'ebeliso ea eona.

Sinoroadersemela sa bitumen se fetotsoeng ka polymere ka sebelisoa bakeng sa ho fetola asphalt, e nang le leloala la colloid, mokhoa oa ho fepa oa modifier, tanka ea thepa e phethiloeng, tanka ea ho futhumatsa ea asphalt, tsamaiso ea ho laola k'homphieutha le lisebelisoa tsa ho bekha tsa elektronike. Ts'ebetso eohle ea tlhahiso e laoloa ke lenaneo le ikemetseng la k'homphieutha.