1. Nkọwa nke rubber powder modified bitumen
Rubber powder modified bitumen (bitumen Rubber, nke a na-akpọ AR) bụ ụdị ọhụrụ nke ihe mejupụtara ihe mejupụtara dị elu. N'okpuru ngwakọta nke bitumen okporo ụzọ siri ike, ntụ ntụ roba na-ekpofu ihe na ihe mgbakwunye, ntụ ntụ rọba na-amịkọrọ resins, hydrocarbons na ihe ndị ọzọ dị na bitumen, ma na-enweta mgbanwe anụ ahụ na nke kemịkal iji mee ka mmiri dị nro ma gbasaa ntụ ntụ rọba. Viscosity na-abawanye, ebe dị nro na-abawanye, na viscosity, siri ike, na elasticity nke rọba na bitumen na-eburu n'uche, si otú ahụ na-eme ka ọrụ okporo ụzọ nke bitumen roba dịkwuo mma.
"Bitumen rubber modified bitumen" na-ezo aka na ntụ ntụ rọba emere site na taya mkpofu, nke a na-agbakwunyere dị ka ihe na-agbanwe na bitumen isi. A na-eme ya site na usoro omume dị ka okpomọkụ dị elu, ihe mgbakwunye na ịkwanye n'ime ngwá ọrụ pụrụ iche. ihe nrapado.
Ụkpụrụ mgbanwe nke rọba ntụ ntụ gbanwetụrụ bitumen bụ ihe simenti bitumen gbanwetụrụ site na mmeghachi omume ọzịza zuru oke n'etiti ihe mgbochi roba roba na bitumen matriks n'okpuru ọnọdụ okpomọkụ agwakọta nke ọma. Rubber powder modified bitumen emeela ka arụ ọrụ nke bitumen isi dịkwuo mma, ma dị elu karịa bitumen gbanwere nke ihe ndị na-emezigharị ugbu a dị ka SBS, SBR, EVA, wdg. N'ihi ọrụ ya magburu onwe ya na nnukwu onyinye maka nchebe gburugburu ebe obibi, ụfọdụ ndị ọkachamara. buru amụma na rọba ntụ ntụ gbanwetụrụ bitumen na-atụ anya ka ọ dochie SBS modified bitumen.
2. Njirimara nke rubber powder gbanwetụrụ bitumen
Igwe rọba eji eme bitumen gbanwetụrụ bụ polymer na-agbanwe nke ukwuu. Ịtinye uzuzu rọba vulcanized na bitumen ntọala nwere ike nweta ma ọ bụ ọbụna gafere otu mmetụta nke styrene-butadiene-styrene block copolymer modified bitumen. Njiri mara ntụ ntụ rọba gbanwetụrụ bitumen gụnyere:
2.1. Ntinye ahụ na-ebelata, ihe na-eme ka ọ dị nro na-abawanye, na viscosity na-abawanye, na-egosi na nkwụsi ike dị elu nke bitumen na-eme ka ọ dịkwuo mma, na-emeziwanye ihe ndị na-eme ka ọ dị nro ma na-akpali akpali nke okporo ụzọ n'oge okpomọkụ.
2.2. A na-ebelata mmetụta okpomọkụ. Mgbe okpomọkụ dị ntakịrị, bitumen na-agbaji, na-eme ka nrụgide na-agbawa na pavement; mgbe okpomọkụ dị elu, pavment ahụ na-adị nro ma na-agbanwe n'okpuru mmetụta nke ụgbọ ala na-ebu ya. Mgbe emechara ya na ntụ ntụ rọba, a na-eme ka mmetụta okpomọkụ nke bitumen dịkwuo mma ma na-eme ka nkwụsị ya dịkwuo mma. Ọnụ ọgụgụ viscosity nke rubber powder modified bitumen dị ukwuu karịa nke bitumen isi, na-egosi na bitumen a gbanwere nwere nnukwu nguzogide nrụrụ eruba.
2.3. A na-emeziwanye arụmọrụ okpomọkụ dị ala. Rubber ntụ ntụ nwere ike melite ductility dị ala nke bitumen ma mee ka mgbanwe nke bitumen dịkwuo elu.
2.4. Adhesion emelitere. Ka ọ̀tụ̀tụ̀ ihe nkiri bitumen rọba na-arapara n’elu nkume ahụ na-arị elu, e nwere ike ime ka ọnyà bitumen na-eguzogide mmebi mmiri na-adịwanye mma, a pụkwara ịgbatị ndụ okporo ụzọ ahụ.
2.5. Belata mmetọ mkpọtụ.
2.6. Mee ka njide dị n'etiti taya ụgbọ ala na elu okporo ụzọ ma melite nchekwa ịkwọ ụgbọala.