Nchịkọta nke Rebar
Ogwe ígwè a mebiri emebi bụ ihe a na-ejikarị eme ka ígwè na-eme ka ihe na-eme ka ihe na-arụsi ọrụ ike na ihe arụrụ arụ. A na-emepụta ya site na nchara dị nro ma nye ya ọgịrịga maka mmachi esemokwu na kọmpụta. Nrụrụ nke ọgịrịga n'ihi ọrụ nke ọgịrịga, na kọnkịta nwere ikike ka ukwuu ijikọ, nke nwere ike iguzogide ndị agha mpụga nke ọma. Ogwe ígwè ahụ mebiri emebi bụ mkpanaka ígwè, ogwe ígwè na-eme ka ọ dị larịị weldable, a pụkwara iji ya mee ihe maka nchara ígwè. Ọdịdị nke ọgịrịga transverse bụ gburugburu, ọkpụkpụ herringbone, nke nwere ọdịdị okirikiri nke atọ. Dayameta aha n'ọnụ nke ogwe nchara agbagoro agbagoro dabara na dayameta aha nke ogwe okirikiri nke nha nha nhata. Ihe gbasiri ike na nrụgide tensile bụ isi.
Nkọwapụta nke Rebar
HRB335 | Ngwakọta kemịkalụ | C | Mn | Si | S | P | ||||
0.17-0.25 | 1.0-1.6 | 0.4-0.8 | 0.045 Max. | 0.045 Max. | ||||||
Ngwongwo igwe | Mpụta ike | Ike ọdụdọ | Ogologo oge | |||||||
≥335 Mpa | ≥455 Mpa | 17% | ||||||||
HRB400 | Ngwakọta kemịkalụ | C | Mn | Si | S | P | ||||
0.17-0.25 | 1.2-1.6 | 0.2-0.8 | 0.045 Max | 0.045 Max | ||||||
Ngwongwo igwe | Mpụta ike | Ike ọdụdọ | Ogologo oge | |||||||
≥400 Mpa | ≥540 Mpa | 16% | ||||||||
HRB500 | Ngwakọta kemịkalụ | C | Mn | Si | S | P | ||||
0.25 Max | 1.6 Max | 0.8 Max | 0.045 Max. | 0.045 Max | ||||||
Ngwongwo igwe | Mpụta ike | Ike ọdụdọ | Ogologo oge | |||||||
≥500 Mpa | ≥630 Mpa | 15% |
Ụdị Rebars
Dabere n'ụdị ihe eji emepụta rebar, ụdị rebars dị iche iche bụ
l 1. European Rebar
A na-eji manganese mee rebar nke Europe, nke na-eme ka ha na-ehulata ngwa ngwa. Ha adịghị mma maka ojiji n'ebe ndị nwere ike inwe oke ọnọdụ ihu igwe ma ọ bụ mmetụta ala, dị ka ala ọma jijiji, ifufe, ma ọ bụ oké ifufe. Ọnụ ego rebar a dị ala.
l 2. Carbon Steel Rebar
Dị ka aha ahụ na-anọchi anya ya, ọ bụ carbon steel a na-akpọkarị ya dị ka Black Bar n'ihi agba carbon. Isi ihe ndọghachi azụ nke rebar a bụ na ọ na-emebi emebi, nke na-emetụta kọmpụta na nhazi ahụ. Oke ike tensile yana ọnụ ahịa na-eme ka rebar ojii bụrụ otu n'ime nhọrọ kacha mma.
l 3. Rebar Ekpuchiri Epoxy
Rebar nwere mkpuchi Epoxy bụ mgbanaka ojii nwere uwe epoxy. Ọ nwere otu ike ntakiri ahụ, mana ọ na-eguzogide ihe mgbochi corrosion ugboro 70 ruo 1,700. Otú ọ dị, mkpuchi epoxy dị nnọọ nro. Ka mmebi nke mkpuchi ahụ dị ukwuu, ọ na-esiwanye ike na-eguzogide corrosion.
l 4. Galvanized Rebar
Galvanized rebar bụ naanị ugboro iri anọ na-eguzogide corrosion karịa rebar ojii, mana ọ na-esiri ike imebi mkpuchi nke rebar galvanized. N'akụkụ ahụ, ọ nwere uru karịa rebar mkpuchi epoxy. Agbanyeghị, ọ dị ihe dị ka 40% ọnụ karịa rebar nwere mkpuchi epoxy.
l 5. Glass-Fiber-Reinforced-Polymer (GFRP)
GFRP bụ nke carbon fiber mebere. Ebe ọ bụ eriri mejupụtara ya, anabataghị ịgbagọ. Ọ na-eguzogide nke ukwuu na corrosion na-efu ma e jiri ya tụnyere ndị ọzọ rebars.
l 6. Igwe anaghị agba nchara
Igwe igwe anaghị agba nchara bụ ihe nrụnye ume kachasị ọnụ dị, ihe dị ka okpukpu asatọ ọnụ ahịa rebar nwere mkpuchi epoxy. Ọ bụkwa rebar kacha mma dị maka ọtụtụ ọrụ. Agbanyeghị, iji igwe anaghị agba nchara na ihe niile mana ọnọdụ kachasị pụrụ iche na-abụkarị oke. Ma, maka ndị nwere ihe kpatara eji ya, igwe anaghị agba nchara 1,500 ugboro na-eguzogide corrosion karịa mmanya ojii; ọ na-eguzogide mmebi karịa nke ọ bụla n'ime ihe ndị ọzọ na-emebi emebi na-eguzogide ma ọ bụ na-emebi emebi ma ọ bụ rebar; ma enwere ike gbadaa n'ubi.