Lub ntsiab hom ntawm asphalt qhob mix

Cov txheej txheem ntawm asphalt pob zeb yog kwv yees li hauv qab no: pob zeb crushed, xuab zeb (crushed los yog ntuj), ntxhia hmoov thiab bitumen. Qhov kawg muaj pes tsawg leeg ntawm cov txheej yog tau los ntawm kev suav cov proportions kom raug, soj ntsuam ib qho kub thiab compaction siv cov txheej txheem tshwj xeeb.

Asphalt qhob puag - ib tug binder tau los ntawm kev sib tov ntxhia hmoov thiab bitumen. Tom qab sib tov xuab zeb rau hauv cov khoom zoo li no, ib qho sib tov hu ua asphalt mortar tau txais.
Ua kua asphalt - qhov no yog ib qho cuab yeej tseem ceeb rau kev tshawb xyuas cov kab nrib pleb hauv txheej thiab nrog nws cov kev pab koj tuaj yeem yooj yim tshem tawm cov crevices https://xn--80aakhkbhgn2dnv0i.xn--p1ai/product/mastika-05. Txhawm rau ua kom lub neej kev pab cuam ntawm asphalt pavement ntau zaus dhau los, Mastic 05 yog cov cuab yeej siv tau txawm tias tsis muaj kev paub tshwj xeeb thiab kev txawj ntse hauv kev ua haujlwm asphalt.

Muaj ntau ntau hom asphalt pob zeb sib tov. Lawv txawv los ntawm qhov kub ntawm qhov muaj pes tsawg leeg yog nteg, thiab los ntawm qib ntawm viscosity ntawm bitumen. Cov khoom sib tov no yog kub, sov thiab txias. Hauv qab no peb yuav tham txog lub hauv paus ntsiab lus ntawm nteg siv ntau hom asphalt sib tov.

1. Kub asphalt mix yog npaj siv viscous bitumen. Qhov kub ntawm kev npaj ntawm cov muaj pes tsawg leeg yog khaws cia nyob rau hauv thaj tsam ntawm 140-160 ° C, thaum pw yog nqa tawm ntawm ib tug kub ntawm txog 120 ° C (tab sis tsis tsawg tshaj li ntawd). Cov qauv yog tsim thaum lub sij hawm compaction txheej txheem.

2. Kev sib xyaw ntawm qhov nruab nrab kub (sov), thaum lub sij hawm npaj yuav tsum tau kub ntawm 90 mus rau 130 ° C. Cov flooring yog nqa tawm ntawm t = 50-80 ° C. Hauv qhov no, cov qauv siv sijhawm ntev dua rau kev tsim - los ntawm ob peb teev mus rau ob lub lis piam. Lub sij hawm yog nyob ntawm seb hom bitumen siv.

3. Rau kev npaj ntawm peb hom sib tov - txias, kua bitumen yog siv. Qhov ntsuas kub yuav tsum tau nyob ntawm no tshwj xeeb tshaj yog thaum lub sijhawm npaj (txog 120 ° C), thaum tso ua tiav tom qab sib tov txias. Muaj, ntawm chav kawm, nyob rau hauv xws li technology thiab ib tug rho tawm - lub sij hawm ntawm solidification thiab tsim ntawm cov qauv ntawm cov sib tov nyob rau hauv cov ntaub ntawv no ntev npaum li cas - los ntawm 20 hnub mus rau ib lub hlis. Lub sij hawm kuj nyob ntawm hom thiab ceev ntawm thickening ntawm cov bitumen xaiv, thiab nyob rau hauv kev thauj mus los, thiab nyob rau hauv huab cua puag.

Tsis tas li ntawd, hom asphalt pob zeb sib tov yog qhov txawv nyob ntawm seb qhov loj me ntawm cov khoom, cov ntxhia hauv cov khoom muaj pes tsawg leeg. Muaj coarse-grained asphalt pob zeb (particle loj - mus txog 25 hli), nplua-grained (txog 15 hli) thiab xuab zeb (qhov siab tshaj plaws grain loj - 5 hli).

Raws li muaj pes tsawg leeg thiab hom ntawm cov hauv paus, cov nram qab no hom asphalt qhob sib tov yog txawv:

a) rau kev npaj ntawm sov thiab kub ntom asphalt qhob muaj pes tsawg leeg:
• polygravel (rubble cov ntsiab lus nyob rau hauv cov muaj pes tsawg leeg - 50-65%);
• nruab nrab crushed pob zeb (35-50% crushed pob zeb);
• gravel tsawg (20-35% gravel nyob rau hauv sib tov);
• xuab zeb nrog crushed xuab zeb, particle loj 1,25-5,00 mm;
• Sandy raws li ntuj xuab zeb,
• particle loj - 1,25-5,00 mm;

b) rau kev npaj ntawm txias-hom asphalt pob zeb:
• pob zeb crushed - feem 5-15 los yog 3-10 hli;
• gravel tsawg - feem 5-15 lossis 3-10 mm;
• xuab zeb, nrog particle loj ntawm 1,25-5,00 mm;

Cov txheej hauv qab ntawm asphalt qhob pavement feem ntau yog ua nrog kev suav ntawm 50-70 feem pua ​​​​ntawm cov pob zeb crushed. Tsis tas li ntawd, hom asphalt mix nyob ntawm txoj kev compaction siv rau txheej pavement. Muaj cov sib tov cam khwb cia, rammed, dov thiab vibrating (compacted nrog ib tug vibrating phaj).