1. Txhais cov roj hmab hmoov hloov bitumen
Roj hmab hmoov hloov bitumen (bitumen Roj Hmab, hu ua AR) yog ib yam tshiab ntawm cov khoom zoo sib xws. Raws li kev sib koom ua ke ntawm cov tsheb thauj neeg hnyav, cov khib nyiab roj hmab hmoov thiab cov khoom sib xyaw, cov roj hmab hmoov absorbs resins, hydrocarbons thiab lwm yam organic teeb meem nyob rau hauv bitumen, thiab undergoes ib tug series ntawm lub cev thiab tshuaj hloov mus moisten thiab nthuav cov roj hmab hmoov. Lub viscosity nce, lub softening taw tes nce, thiab viscosity, toughness, thiab elasticity ntawm roj hmab thiab bitumen yog muab rau hauv tus account, yog li txhim kho txoj kev ua tau zoo ntawm roj hmab bitumen.
"Rubber hmoov hloov bitumen" yog hais txog cov roj hmab hmoov uas ua los ntawm cov log tsheb khib nyiab, uas yog ntxiv los ua ib qho kev hloov kho rau hauv paus bitumen. Nws yog tsim los ntawm kev ua yeeb yam xws li kub kub, tshuaj ntxiv thiab shear sib xyaw hauv cov cuab yeej tshwj xeeb tshwj xeeb. adhesive khoom.
Lub hauv paus ntsiab lus ntawm kev hloov kho cov roj hmab hmoov hloov bitumen yog ib qho kev hloov kho bitumen cementing khoom tsim los ntawm tag nrho cov o cov tshuaj tiv thaiv ntawm cov log tsheb roj hmab hmoov hais thiab matrix bitumen nyob rau hauv tag nrho cov high-temperature. Roj hmab hmoov hloov bitumen tau zoo heev txhim kho kev ua tau zoo ntawm lub hauv paus bitumen, thiab yog superior rau hloov bitumen ua los ntawm tam sim no siv modifiers xws li SBS, SBR, EVA, thiab lwm yam. Nyob rau hauv view ntawm nws zoo heev kev ua tau zoo thiab muaj txiaj ntsim zoo rau kev tiv thaiv ib puag ncig, qee cov kws tshaj lij. kwv yees tias roj hmab hmoov hloov bitumen yuav tsum hloov SBS hloov bitumen.
2. Cov yam ntxwv ntawm cov roj hmab hmoov hloov bitumen
Cov roj hmab siv rau kev hloov kho bitumen yog ib qho elastic polymer heev. Ntxiv vulcanized roj hmab hmoov rau lub hauv paus bitumen tuaj yeem ua tiav los yog ntau tshaj qhov zoo ib yam li styrene-butadiene-styrene thaiv copolymer hloov bitumen. Cov yam ntxwv ntawm roj hmab hmoov hloov bitumen muaj xws li:
2.1. Kev nkag mus tau qis dua, qhov muag muag tau nce, thiab cov viscosity nce ntxiv, qhia tias qhov kub thiab txias stability ntawm cov bitumen tau txhim kho, thiab rutting thiab thawb phenomena ntawm txoj kev nyob rau lub caij ntuj sov yog txhim kho.
2.2. Kub rhiab heev yog txo. Thaum qhov kub thiab txias qis, cov bitumen ua nkig, ua rau muaj kev ntxhov siab tawg hauv cov pavement; Thaum qhov kub thiab txias, cov pavement yuav mos thiab deforms nyob rau hauv lub zog ntawm cov tsheb nqa nws. Tom qab kev hloov kho nrog cov hmoov roj hmab, qhov kub thiab txias ntawm cov bitumen tau txhim kho thiab nws cov dej ntws tau zoo tuaj. Lub viscosity coefficient ntawm cov roj hmab hmoov hloov bitumen yog ntau dua li ntawm lub hauv paus bitumen, qhia tau hais tias cov hloov bitumen muaj ntau dua tiv thaiv ntws deformation.
2.3. Qhov kub thiab txias ua haujlwm tau zoo dua. Roj hmab hmoov tuaj yeem txhim kho qhov kub thiab txias ductility ntawm bitumen thiab ua kom yooj yim ntawm bitumen.
2.4. Txhim kho adhesion. Raws li lub thickness ntawm cov roj hmab bitumen zaj duab xis adhered rau saum npoo ntawm lub pob zeb nce, lub bitumen pavement tiv thaiv dej puas tuaj yeem txhim kho thiab txoj kev ua neej ntev.
2.5. Txo cov suab nrov.
2.6. Ua kom tuav ntawm lub tsheb log tsheb thiab txoj kev nto thiab txhim kho kev nyab xeeb ntawm kev tsav tsheb.