Mhando huru dzeasphalt kongiri musanganiswa
Iyo yakajairwa kuumbirwa kwetirafu kongiri ingangoita anotevera: akapwanywa ibwe, jecha (rakapwanyika kana rechisikigo), chicherwa hupfu uye bhitumini. Kuumbwa kwekupedzisira kwekupfeka kunowanikwa nekuverenga zvakaenzana zviyero, uchiona imwe tembiricha uye kuumbana uchishandisa yakakosha nzira.
Asphalt kongiri chigadziko - binder inowanikwa nekusanganisa mineral powder uye bitumen. Mushure mekusanganisa jecha mune chinhu chakadai, musanganiswa unowanikwa, unonzi mhinduro yeasphalt.
Liquid asphalt -Ichi chishandiso chakakosha chekuona kuputika mujasi uye nerubatsiro rwacho unogona kubvisa nyore nyuchi. https://xn--80aakhkbhgn2dnv0i.xn--p1ai/product/mastika-05. Kuti uwedzere hupenyu hwesevhisi yeasphalt pavement kakawanda pamusoro, Mastic 05 chishandiso chinogona kushandiswa kunyangwe pasina ruzivo rwakakosha uye hunyanzvi mumunda webasa reasphalt.
Kune akatiwandei marudzi easphalt kongiri inosanganiswa. Ivo vanosiyaniswa netembiricha pakarongedzwa chimiro, uye nedanho reiyo viscosity yebhitumini. Misanganiswa iyi inopisa, inodziya uye inotonhora. Pazasi isu tichakurukura chirevo chekuisa tichishandisa mhando dzakasiyana dzeasphalt mixes.
1. Kupisa asphalt musanganiswa unogadzirwa uchishandisa viscous bhitumeni. Iyo tembiricha yekugadzirira kwechimiro inochengetwa mukati meyakaganhurirwa 140-160 ° C, nepo kuiswa kuri kuitiswa patembiricha ingangoita 120 ° C (asi kwete pasi peiyo). Chimiro chinoumbwa panguva yekubatanidza.
2. Misanganiswa yepakati yepakati tembiricha (inodziya), panguva yekugadzirira inoda tembiricha kubva pa90 kusvika 130 ° C. Iyo pasi inoitwa pa t = 50-80 ° C. Muchiitiko ichi, chimiro chinotora nguva yakareba kuumba - kubva pamaawa mashomanana kusvika kumavhiki maviri. Nguva yacho inoenderana nerudzi rwebhitumini yakashandiswa.
3. Nekugadzirira kwemhando yechitatu yemisanganiswa - inotonhora, bhitumini yemvura inoshandiswa. Hutongi hwekupisa hunodiwa pano chete panguva yekugadzirira (kusvika pa 120 ° C), apo kuiswa kuri kuitwa mushure mekunge musanganiswa watonhora. Iko kune, hongu, mune iyi tekinoroji uye minus - nguva yekusimba uye kuumbwa kwechimiro chemusanganiswa munyaya iyi yakareba - kubva pamazuva makumi maviri kusvika pamwedzi. Izwi iri zvakare rinoenderana nemhando uye nekukurumidza kwekukora kwebhitume yakasarudzwa, uye pakutakura traffic, uye nemamiriro ekunze.
Zvakare, mhando dzeasphalt kongiri yakasanganiswa inosiyana zvichienderana nesaizi yesimbi yesimbi, chikamu chemaminerari chechimiro. Ikoko kune yakakomberedzwa-yakatemwa asphalt kongiri (saizi - kusvika 25 mm), yakanaka-yakasungwa (inosvika 15 mm) uye jecha (saizi yepamusoro yezviyo - 5 mm).
Zvinoenderana nezvakanyorwa uye mhando dzezvigadziko, idzi mhando dzakasiyana dzeasphalt kongiri yakasanganiswa inosiyaniswa:
a) yekugadzirira inodziya uye inopisa dense asphalt kongiri yekuumbwa:
• polygravel (rubble content muhutano - 50-65%);
• dombo repakati rakapwanyika (35-50% dombo rakapwanyika);
• dombo rakapwanyika (20-35% rakapwanywa ibwe mumusanganiswa);
• jecha nejecha rakapwanyika, saizi yezvikamu 1,25-5,00 mm;
• jecha rakavakirwa pajecha rechisikigo,
• particle size - 1,25-5,00 mm;
b) yekugadzirira inotonhora-mhando asphalt kongiri:
• dombo rakapwanyika - zvikamu 5-15 kana 3-10 mm;
• girafu rakaderera - zvikamu 5-15 kana 3-10 mm;
• jecha, ine saizi inosvika 1,25-5,00 mm;
Iyo yepasi yakatetepa yeasphalt kongiri yegwekwe inowanzoitwa nekuverenga kwe50-70 muzana yedombo rakapwanyika. Zvakare, mhando yeasphalt musanganiswa inoenderana nenzira yekumanikidza inoiswa kune yakaturikwa pevhu. Iko kune misanganiswa yakakandwa, yakapetwa, yakakungurutswa uye yakazunguzirwa (yakasungwa neplate inodedera).
