Nānā nui o Rebar
ʻO kēia pahu kila deformed he pahu hoʻoikaika kila maʻamau / hoʻohana ʻia i loko o nā hale paʻa paʻa a hoʻoikaika ʻia.Hoʻokumu ʻia ia mai ke kila māmā a hāʻawi ʻia i nā iwi ʻaoʻao no ka hoʻopili ʻana i ka frictional maikaʻi aʻe i ke kaʻa.ʻO ka deformation o nā iwi ʻaoʻao ma muli o ke kuleana o nā iwi ʻaoʻao, a ʻoi aku ka maikaʻi o ka hoʻopaʻa ʻana i ka ʻiʻo, hiki ke kū i nā ikaika o waho.ʻO ka pahu kila deformed he koʻokoʻo hao, he pā kila e hoʻoikaika ai i ka paʻa, a hiki ke hoʻohana pū ʻia no nā wili kila.ʻO ke ʻano o nā ʻaoʻao ʻaoʻao he spiral, herringbone, ʻano ʻekolu.ʻO ke anawaena inoa o ka pahu kila i hoʻopaʻa ʻia deformed e pili ana i ke anawaena nominal o ka pahu pōʻai o ka ʻāpana like.Paʻa paʻa i ke koʻikoʻi tensile nui.
Hōʻike o Rebar
| HRB335 | haku mele ʻana | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.0-1.6 | 0.4-0.8 | 0.045 Max. | 0.045 Max. | ||||||
| Waiwai Mechanical | Hua ikaika | Ka ikaika tensile | ʻO ka lōʻihi | |||||||
| ≥335 Mpa | ≥455 Mpa | 17% | ||||||||
| HRB400 | haku mele ʻana | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.2-1.6 | 0.2-0.8 | 0.045 Max | 0.045 Max | ||||||
| Waiwai Mechanical | Hua ikaika | Ka ikaika tensile | ʻO ka lōʻihi | |||||||
| ≥400 Mpa | ≥540 Mpa | 16% | ||||||||
| HRB500 | haku mele ʻana | C | Mn | Si | S | P | ||||
| 0.25 Max | 1.6 Max | 0.8 Max | 0.045 Max. | 0.045 Max | ||||||
| Waiwai Mechanical | Hua ikaika | Ka ikaika tensile | ʻO ka lōʻihi | |||||||
| ≥500 Mpa | ≥630 Mpa | 15% | ||||||||
Nā ʻano o nā Rebars
Ma muli o ke ʻano o nā mea i hoʻohana ʻia i ka hana ʻana i ka rebar, ʻokoʻa nā ʻano rebars
l 1. Rebar Europa
Hana ʻia ka pāpaʻi ʻEulopa i ka manganese, kahi e hiki ai iā lākou ke kūlou maʻalahi.ʻAʻole kūpono ia no ka hoʻohana ʻana i nā wahi i pili i nā kūlana ʻino a i ʻole nā hopena honua, e like me nā ōlaʻi, nā makani ʻino, a me nā puahiohio.He haʻahaʻa ke kumukūʻai o kēia rebar.
l 2. Paa hao hao
E like me ka inoa, ua hana ʻia me ke kila kalapona a ʻike ʻia ʻo Black Bar ma muli o ke kala kalapona.ʻO ka drawback nui o kēia rebar ʻo ia ka ʻino, e hoʻopōʻino i ka ʻōpala a me ke ʻano.ʻO ka lakene ikaika tensile i hui pū ʻia me ka waiwai e hana i ka rebar ʻeleʻele kekahi o nā koho maikaʻi loa.
l 3. Epoxy-Coated Rebar
ʻO ka pahu epoxy-coated rebar ʻeleʻele me kahi kapa epoxy.Loaʻa iā ia ka ikaika tensile like, akā ʻo 70 a 1,700 mau manawa ʻoi aku ka pale ʻana i ka corrosion.Eia naʻe, paʻakikī loa ka uhi ʻana o ka epoxy.ʻOi aku ka nui o ka pōʻino i ka uhi ʻana, ʻoi aku ka liʻiliʻi o ka pale ʻana i ka corrosion.
l 4. Paa Uwina
He kanahā wale nō mau manawa ʻoi aku ka pale ʻana o ka pā hao i ka corrosion ma mua o ka rebar ʻeleʻele, akā ʻoi aku ka paʻakikī o ka hōʻino ʻana i ka uhi ʻana o ka rebar galvanized.Ma kēlā ʻano, ʻoi aku ka waiwai ma mua o ka epoxy-coated rebar.Eia nō naʻe, ma kahi o 40% ʻoi aku ke kumukūʻai ma mua o ka epoxy-coated rebar.
l 5. Aniani-Fiber-Reinforced-Polymer (GFRP)
Hoʻokumu ʻia ʻo GFRP me ka fiber kalapona.No ka mea, ua hana ʻia me ka fiber, ʻaʻole ʻae ʻia ke kulou ʻana.He kūpaʻa loa ia i ka corrosion a he kumukūʻai ke hoʻohālikelike ʻia me nā rebars ʻē aʻe.
l 6. Paa kila kila
ʻO ke kila kila ka pahu hoʻoikaika makamae loa i loaʻa, ma kahi o ʻewalu manawa o ke kumu kūʻai o ka rebar i uhi ʻia epoxy.ʻO ia hoʻi ka rebar maikaʻi loa i loaʻa no ka hapa nui o nā papahana.Eia nō naʻe, ʻo ka hoʻohana ʻana i ke kila kila ma nā mea āpau akā ʻo nā kūlana kūʻokoʻa loa e hoʻopau pinepine ʻia.Akā, no ka poʻe i loaʻa ke kumu e hoʻohana ai, ʻoi aku ka paʻa ʻana o ke kila kila 1,500 mau manawa i ka corrosion ma mua o ka pahu ʻeleʻele;ʻoi aku ke kūpaʻa i ka pōʻino ma mua o kekahi o nā ʻano corrosive-resistant a corrosive-proof a rebar paha;a hiki ke pelu ia ma ke kula.
