Txheej txheem cej luam ntawm Rebar
Cov hlau deformed no yog cov hlau reinforcing bar uas siv ntau hauv cov pob zeb reinforced thiab cov qauv masonry reinforced. Nws yog tsim los ntawm cov hlau tsis muaj zog thiab muab cov tav rau kev sib txhuam zoo dua rau cov pob zeb. Kev hloov pauv ntawm cov tav vim yog lub luag haujlwm ntawm tav, thiab cov pob zeb muaj peev xwm sib txuas zoo dua, uas tuaj yeem tiv taus cov zog sab nraud zoo dua. Cov hlau deformed yog ib tug pas hlau, ib tug weldable tiaj reinforcing steel bar, thiab tuaj yeem siv tau rau cov hlau meshes. Cov duab ntawm cov tav transverse yog spiral, herringbone, crescent-puab peb. Lub nominal txoj kab uas hla ntawm cov hlau deformed reinforced sib raug rau lub nominal txoj kab uas hla ntawm lub voj voog ntawm sib npaug cross-section. Reinforced concrete nyob rau hauv lub ntsiab tensile kev nyuaj siab.
Cov Lus Qhia Txog Rebar
| HRB335 | Cov tshuaj lom neeg muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.0-1.6 | 0.4-0.8 | 0.045 Siab Tshaj. | 0.045 Siab Tshaj. | ||||||
| Khoom Siv Kho Tshuab | Lub zog tawm los | Lub zog tensile | Kev ntev | |||||||
| ≥335 Mpa | ≥455 Mpa | 17% | ||||||||
| HRB400 | Cov tshuaj lom neeg muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.2-1.6 | 0.2-0.8 | 0.045 Siab Tshaj | 0.045 Siab Tshaj | ||||||
| Khoom Siv Kho Tshuab | Lub zog tawm los | Lub zog tensile | Kev ntev | |||||||
| ≥400 Mpa | ≥540 Mpa | 16% | ||||||||
| HRB500 | Cov tshuaj lom neeg muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.25 Siab Tshaj | 1.6 Siab Tshaj | 0.8 Siab Tshaj | 0.045 Siab Tshaj. | 0.045 Siab Tshaj | ||||||
| Khoom Siv Kho Tshuab | Lub zog tawm los | Lub zog tensile | Kev ntev | |||||||
| ≥500 Mpa | ≥630 Mpa | 15% | ||||||||
Hom Rebars
Nyob ntawm seb hom khoom siv hauv kev tsim cov rebar, ntau hom rebars yog
l 1. European Rebar
Cov hlau hlau European yog ua los ntawm manganese, uas ua rau lawv yooj yim khoov. Lawv tsis haum rau kev siv rau hauv thaj chaw uas muaj huab cua hnyav lossis cov teebmeem geological, xws li av qeeg, cua daj cua dub, lossis cua daj cua dub. Tus nqi ntawm cov hlau hlau no qis.
l 2. Cov Hlau Carbon Rebar
Raws li lub npe sawv cev, nws yog ua los ntawm cov hlau carbon thiab feem ntau hu ua Black Bar vim yog xim carbon. Qhov tsis zoo ntawm cov hlau rebar no yog tias nws xeb, uas cuam tshuam tsis zoo rau cov pob zeb thiab cov qauv. Lub zog tensile piv nrog rau tus nqi ua rau cov hlau rebar dub yog ib qho kev xaiv zoo tshaj plaws.
l 3. Epoxy-Coated Rebar
Cov hlau hlau uas muaj epoxy txheej yog cov hlau hlau dub uas muaj txheej epoxy. Nws muaj lub zog tensile zoo ib yam, tab sis nws tiv taus xeb tau 70 txog 1,700 npaug ntau dua. Txawm li cas los xij, cov txheej epoxy no yooj yim heev. Qhov puas tsuaj rau cov txheej ntau dua, qhov tsis tiv taus xeb.
l 4. Cov Hlau Galvanized
Cov hlau galvanized tsuas yog plaub caug npaug ntau dua li cov hlau dub, tab sis nws nyuaj dua rau kev puas tsuaj rau cov txheej ntawm cov hlau galvanized. Hauv qhov ntawd, nws muaj nqis ntau dua li cov hlau epoxy-coated. Txawm li cas los xij, nws kim dua li cov hlau epoxy-coated li 40%.
l 5. Iav-Fiber-Reinforced-Polymer (GFRP)
GFRP yog ua los ntawm cov carbon fiber. Vim nws yog ua los ntawm cov fiber, tsis pub khoov. Nws tiv taus xeb heev thiab kim heev thaum piv rau lwm cov rebars.
l 6. Cov Hlau Stainless Hlau
Cov hlau stainless steel rebar yog cov hlau reinforcing bar kim tshaj plaws, kwv yees li yim npaug ntawm tus nqi ntawm cov hlau epoxy-coated. Nws kuj yog cov hlau rebar zoo tshaj plaws rau feem ntau cov haujlwm. Txawm li cas los xij, kev siv cov hlau stainless hauv txhua qhov xwm txheej tshwj xeeb tshaj yog qhov tsis zoo. Tab sis, rau cov neeg uas muaj laj thawj siv nws, cov hlau stainless steel rebar tiv taus xeb 1,500 npaug ntau dua li cov hlau dub; nws tiv taus kev puas tsuaj ntau dua li lwm cov hlau uas tiv taus xeb lossis tiv taus xeb; thiab nws tuaj yeem khoov tau hauv thaj teb.
