Txheej txheem cej luam ntawm Rebar
Qhov no deformed steel bar yog ib hom steel reinforcing bar / siv nyob rau hauv cov pob zeb ua vaj tse thiab cov pob zeb muaj zog. Nws yog tsim los ntawm cov hlau me me thiab muab ribs kom zoo dua kev sib txhuam adhesion rau cov pob zeb. Deformation ntawm cov tav vim lub luag hauj lwm ntawm cov tav, thiab cov pob zeb muaj peev xwm ntau dua rau kev sib raug zoo, uas tuaj yeem tiv taus sab nraud zoo dua. Lub deformed steel bar yog ib tug hlau pas nrig, ib tug weldable tiaj reinforcing steel bar, thiab yuav siv tau zoo li rau steel meshes. Cov duab ntawm lub transverse tav yog kauv, herringbone, crescent-shaped peb. Lub nominal txoj kab uas hla ntawm lub deformed reinforced steel bar sib haum mus rau lub nominal txoj kab uas hla ntawm lub voj bar ntawm sib npaug cross-section. Reinforced qhob nyob rau hauv lub ntsiab tensile kev nyuaj siab.
Specification ntawm Rebar
| SIB 335 | Tshuaj muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.17-0.25 dr hab | 1.0-1.6 | 0.4-0.8 hli | 0.045 Max. | 0.045 Max. | ||||||
| Mechanical Property | Yield zog | Lub zog tensile | Elongation | |||||||
| ≥335 Mpa | ≥455 Mpa | 17% | ||||||||
| PAB 400 | Tshuaj muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.17-0.25 dr hab | 1.2-1.6 | 0.2-0.8 hli | 0.045 Max | 0.045 Max | ||||||
| Mechanical Property | Yield zog | Lub zog tensile | Elongation | |||||||
| ≥400 Mpa | ≥540 Mpa | 16% | ||||||||
| PAB 500 | Tshuaj muaj pes tsawg leeg | C | Mn | Si | S | P | ||||
| 0.25 Max | 1.6 Max | 0.8 Max | 0.045 Max. | 0.045 Max | ||||||
| Mechanical Property | Yield zog | Lub zog tensile | Elongation | |||||||
| ≥500 Mpa | ≥630 Mpa | 15% | ||||||||
Hom ntawm Rebars
Nyob ntawm seb hom khoom siv hauv kev tsim cov rebar, ntau hom rebars yog
l 1. European Rebar
European rebar yog ua los ntawm manganese, uas ua rau lawv khoov tau yooj yim. Lawv tsis haum rau siv nyob rau hauv cov cheeb tsam uas muaj huab cua huab cua huab cua lossis cov teebmeem geological, xws li av qeeg, nag xob nag cua, lossis cua daj cua dub. Tus nqi ntawm no rebar yog tsawg.
l 2. Carbon Steel Rebar
Raws li lub npe sawv cev, nws yog tsim los ntawm carbon steel thiab feem ntau hu ua Black Bar vim cov xim carbon. Lub ntsiab drawback ntawm no rebar yog tias nws corrodes, uas adversely cuam tshuam lub pob zeb thiab cov qauv. Lub zog tensile piv nrog rau tus nqi ua rau dub rebar yog ib qho kev xaiv zoo tshaj plaws.
l 3. Epoxy-Coated Rebar
Epoxy-coated rebar yog dub rebar nrog ib lub tsho epoxy. Nws muaj tib lub zog tensile, tab sis yog 70 mus rau 1,700 lub sij hawm ntau resistant rau corrosion. Txawm li cas los xij, epoxy txheej yog qhov muag heev. Qhov ntau dua qhov kev puas tsuaj rau txheej, qhov tsawg dua rau corrosion.
l 4. Galvanized Rebar
Galvanized rebar tsuas yog plaub caug npaug ntawm kev tiv thaiv corrosion dua li dub rebar, tab sis nws nyuaj rau kev puas tsuaj rau txheej txheej ntawm galvanized rebar. Nyob rau hauv tas li ntawd, nws muaj nqi ntau tshaj epoxy-coated rebar. Txawm li cas los xij, nws yog kwv yees li 40% kim dua li epoxy-coated rebar.
l 5. Iav-Fiber-Reinforced-Polymer (GFRP)
GFRP yog tsim los ntawm carbon fiber. Raws li nws yog tsim los ntawm fiber ntau, khoov tsis raug tso cai. Nws yog heev resistant rau corrosion thiab yog kim thaum piv rau lwm yam rebars.
l 6. Stainless Hlau Rebar
Stainless hlau rebar yog qhov kim tshaj plaws reinforcing bar muaj, txog yim npaug ntawm tus nqi ntawm epoxy-coated rebar. Nws kuj yog qhov zoo tshaj plaws rebar muaj rau feem ntau cov haujlwm. Txawm li cas los xij, siv stainless hlau hauv txhua qhov tab sis qhov tshwj xeeb tshaj plaws ntawm cov xwm txheej feem ntau yog overkill. Tab sis, rau cov neeg uas muaj laj thawj siv nws, stainless hlau rebar 1,500 lub sij hawm ntau resistant rau corrosion dua dub bar; nws yog resistant rau kev puas tsuaj ntau dua li lwm yam corrosive-resistant los yog corrosive-proof hom los yog rebar; thiab nws tuaj yeem khoov hauv qhov chaw.
