Bitumen rau asphalt. Hom thiab thaj chaw ntawm bitumen

Tag nrho cov hom ntawm asphalt siv los txhawb ntxiv rau roadbed, muaj feem ntau ntawm ob lub Cheebtsam: bitumen thiab mineral sau ua ib pawg. Cov yav tas yog ua raws li cov qauv GOST 9128 los ntawm ib tug heev check cov ntaub ntawv uas. Bitumen asphalt yuav siv tau rau ntau hom.

Nta ntawm technology

Ntuj bitumen feem ntau tshwm sim nyob ze ntawm lub roj teb nyob rau hauv daim ntawv ntawm cov lo ntsiab muag. Txawm li cas los, kev lag luam thiab kev siv yog ntau feem ntau siv ob version ntawm no cov ntaub ntawv uas - dag. Ua ib tug bitumen los ntawm roj khoom. Feem ntau qhov no ib extracts thiab hnyav refined roj.

Muaj pes tsawg leeg ntawm asphalt thiab nws cov variants

Muaj pes tsawg leeg ntawm sib tov destined rau txoj kev paving, nyob rau hauv tas li ntawd mus bitumen yuav muaj xws li Cheebtsam xws li cov xuab zeb thiab gravel. Siv thawj manufactured xuab zeb asphalt. Tej zaum cov sib tov yog tseem ntxiv mineral hmoov thiab rubble. Qhov no yog ib tug heev hom kev pab them nqi. Qhov no yog hu ua asphalt crushed pob zeb. Tsis tas li ntawd txoj kev no cov ntaub ntawv uas tej zaum tau siv gravel. Cov sib tov yog nyob rau hauv cov ntaub ntawv no ntxiv rau cov rubble thiab cov mineral hmoov. Asphalt no tsiaj yog hu ua gravel.

Nyob ntawm seb lub hom phiaj ntawm lub sib tov piv ntawm cov Cheebtsam yuav sib txawv. Yog li ntawd, rau taug siv asphalt manufactured siv zoo xuab zeb thiab gravel. Lub sab txheej ntawm cov txojkev feem ntau yog ua los ntawm ib tug sib tov ntawm ib tug me ntsis txawv pes tsawg leeg. Nyob rau hauv cov ntaub ntawv no, lub asphalt ua nrog rau qhov kev siv ntawm xwb ib tug heev loj rubble. Lub sab sauv txheej raug nchuav dua txoj kev du asphalt. Nws muaj xws li rubble nplua.

Mark bitumen rau asphalt

Yog li, lub hom muab tub lim siv influences lub dag lub zog ntawm qhov no hom ntawm cov khoom, thiab thiaj li, nws daim ntawv thov teb. Txawm li cas los, muaj pes tsawg leeg ntawm asphalt thiab nws zoo tsis muaj tsawg nyob rau lub hom podmeshennogo nws bitumen. Zus tau tej cov mixtures ntawm no hom kheev siv cov ntaub ntawv uas ntawm no xyov zoo. Nws hu ua bitumen txoj kev thiab yog cim nrog cov tsiaj ntawv BND. Lub ntsiab parameter uas cov classified cov ntaub ntawv uas yog kub.

Nyob rau hauv tej yam tej yam kev mob, tsis muaj kev zam, yuav pib yaj bitumen. Nyob ntawm seb, nyob li cas point nws tshwm sim, cov khoom yuav siv tau nyob rau hauv ib tug cheeb tsam ntawm lub teb chaws. Nyob rau hauv kev txiav txim los mus txiav txim nyob rau hauv dab tsi tej yam kev mob uas koj yuav siv tej ib rau asphalt yuav tsum thawj saib ntawm nws lub cim. Tam sim no nyob rau hauv nws cov nuj nqis qhia rau ntau yam viscosity ntawm cov khoom. Tam sim no, zus tau tej cov asphalt siv nyob rau hauv tag nrho tsib ntau ntau yam ntawm txoj kev bitumen BND 40/60, 60/90, 90/130, 130/200, 200/300. Lub kub tshaj kev nyab xeeb, cov dej khov dua cov ntaub ntawv uas yuav tsum tau ua ntawv thov nyob rau hauv zus tau tej cov paving.

Ntawm cov hoob kawm, tus asphalt nyob rau hauv lub asphalt yuav tsum tam sim no nyob rau hauv txaus kom muaj nuj nqis. Ntau dhau lawm ntawm no cov ntaub ntawv uas nyob rau hauv qhov kev npaj ntawm mixtures tsis kheev siv. Lub kub ib feem ntawm lub paving yuav tsum tau tawg khiav ri niab thiab tsis lo ua ke. Txawm li cas los, yog hais tias tsis txaus bitumen nyob rau hauv lub asphalt nws thiaj li tau tshwm sim tag nrho cov xaiv ntawm unfavorable dab. Nws penetrates rau hauv dej thiab khov nyob rau hauv lub caij ntuj no, tearing nws.

Lub ntsiab thaj chaw ntawm lub BND

Sib nrug los ntawm viscosity bitumen asphalt yog yus muaj los ntawm tej chaw raws li:

• Ductility. Qhov no xam yog txiav txim los ntawm qhov kev ncua deb ntawm uas tus bitumen yuav raug rho mus rau hauv lub xov tsis muaj nws kev sib tawg. Tshaj nws yog, ntau dua qhov lub adhesiveness ntawm sib tov. Txoj kev bitumens feem ntau muaj ib tug degree ntawm ductility siab tshaj 40 cm. Cov uas yuav tsum tau nyob rau hauv no taw qhia rau BND teem rau ntawm 0 degrees C.

• Deformation yam ntxwv. Nyob rau hauv kev txiav txim ntsuam ntawm bitumen rau asphalt siv them mloog kom nws zog xws li elasticity, nkag, ductility, brittleness, thiab hais txog. D. Lawv txiav txim seb lub deformation yam ntxwv ntawm cov khoom. Thaum lub sij hawm cua sov rau cov bitumen tom kawg yuav tsum tsis txhob sib txawv ntau heev.

Kua formulations nyob rau hauv kev tsim kho

Bitumen rau asphalt feem ntau muaj ib tug heev high degree ntawm viscosity. Txawm li cas los, tej zaum kuj siv thaum pouring coatings thiab kua hom ntawm no cov ntaub ntawv uas. Thov lawv mas mus lengthen lub caij ntawm txoj kev ua hauj lwm. Kua bitumen nyob rau hauv ib proportions yog ntxiv rau cov khov. Raws li ib tug tshwm sim, lub txheej ntawm sab kub tsis stiffen heev sai sai. Kua bitumen yog ua los ntawm qhov sib ntxiv ntawm khov distillate fractions.

Thaum kho ua hauj lwm kuj yog siv nruab nrab viscosity khoom. Nws yog siv rau cov kev kho mob ntawm twb tshem lub daim ntawv qhia. Tus nqi ntawm daim ntawv thov ntawm bitumen rau tso asphalt nyob rau hauv cov ntaub ntawv no tsis yog ib yam nkaus thiab loj thiab yog xwb 0.5 l / ^m2.

Yuav ua li cas additives tej zaum yuav tam sim no nyob rau hauv BND

Nyob rau hauv zus tau tej cov bitumen txoj kev, cov lwm yam, yuav siv tau los ntawm tag nrho cov hom ntawm additives. Lawv yuav tsum tau hloov ntau yam zog ntawm cov khoom. Piv txwv li, bitumen yog siv, uas muaj modifying yam nyob rau hauv qhov siv thiab ua txias asphalt. Raws li ib tug tshwm sim ntawm lawv daim ntawv thov tom qab tua cov txheej tsis tawg nyob rau hauv lub txias thiab lub tshav kub tsis yaj. Thaum siv ib MAC-bitumen additives acquires nws kawg zog sai npaum li cas.

Yuav ua li cas ntxiv mus rau lub bitumen rau asphalt lwm tus neeg? Heev ntawm nthuav cov variant ntawm no cov ntaub ntawv uas yog tau nyob rau hauv cov ntaub ntawv ntawm cov dawb lias mineral hmoov yog siv nyob rau hauv lub tsim txoj kev. Los ntawm no nws puv zoo nkauj heev bitumen asphalt. Muab nws nyob rau hauv chaw ua si, tsheb tuam paths, raws li zoo raws li siv rau markup.