Lub hom phiaj ntawm kev hloov kho cov ntaub ntawv: Ntxiv cov kev hloov pauv thiab cov hloov kho tshiab rau kev cog qoob loo hauv paus bitumen kom txhim kho tus choj kev ua tau zoo ntawm cov bitumen, nrog rau qhov ntsuas kub ntawm qhov ntsuas kub, qhov kub thiab txias stability, qis kub cohesion, aging kuj thiab tseem ceeb txuas kev tiv thaiv kev ua haujlwm.

Lub hauv paus ntsiab lus ntawm cov ntaub ntawv hloov kho: Asphalt yog cov khoom siv polymer sib xyaw ua ke ntawm asphaltene, collagen fibers, paraxylene thiab saturated hydrocarbons. Asphaltenes cia siab rau collagen fibers kom tawg nyob rau hauv paraxylene thiab saturated hydrocarbons los tsim ib tug colloidal tov qauv. Asphaltene Thaum cov khoom xyaw me me, bitumen muaj adhesion zoo, yas deformation, thiab fluidity, tab sis tsis zoo kub stability thiab ductility. Lub polymer modifier zoo ib yam li asphaltene hauv asphalt. Nws ntxiv, tom qab txaus melting thiab o nrog asphalt, Lub xylene thiab collagen fibers nyob rau hauv asphalt yog absorbed los tsim ib tug tshiab colloidal tov. Thaum lub sij hawm sib tov cov txheej txheem ntawm kev sib tov, tus neeg sawv cev sov so thiab asphalt yog txau rau hauv lub lauj kaub sib tov ib txhij. Raws li kev sib xyaw ua ke, ntau cov surfactant micelles tuaj rau hauv kev sib cuag nrog cov asphalt kub, thiab cov dej sab nraud ntawm cov micelles sai sai evaporates thiab poob, ua rau lipophilic pab pawg neeg hu rau asphalt; thaum cov dej seem uas tsis tau ploj mus yog nyob rau hauv kev sib cuag nrog pawg hydrophilic ntawm surfactant. Ua ke, ib tug loj npaum li cas ntawm cov qauv shrinkage dej nrog lubricating nyhuv yog tsim los ntawm asphalts npog asphalt sib tov; los ntawm cov nyhuv lubricating ntawm cov qauv shrinkage dej, nws tsis tsuas yog txhim kho kev sib xyaw ua haujlwm ntawm cov khoom sib tov, tab sis kuj zam qhov teeb meem rau qee yam. Asphalt mortar yog clumping.
Qhov no tsis tsuas yog khaws cia lossis txhim kho cov adhesion, yas deformation thiab fluidity ntawm cov asphalt qub, tab sis kuj txhim kho qhov kub thiab txias ntawm asphalt, yog li ua tiav lub hom phiaj ntawm kev txhim kho kev ua haujlwm ntawm asphalt txuas hniav;
Kev hloov kho cov khoom siv thev naus laus zis: cov kev hloov pauv thiab kev hloov pauv tau sib npaug thiab ua kom zoo rau hauv kev cog qoob loo asphalt, thiab tom qab ntawd txiav los ntawm kev kub ceev micro hmoov tshuab kom ua kom qhov chaw sib cuag ntawm cov thawj asphalt thiab cov kev hloov kho kom txaus o, kev loj hlob thiab kev loj hlob. . Nws tsis tsuas yog nce kev siv tus nqi ntawm kev hloov kho tab sis kuj txhim kho kev ua tau zoo ntawm thawj asphalt.