Zithunzi za Rebar
Chitsulo chopundukachi ndi chitsulo chowonjezera chachitsulo / chomwe chimagwiritsidwa ntchito mu konkriti yolimba komanso zomangira zolimba. Amapangidwa kuchokera ku chitsulo chochepa ndipo amapatsidwa nthiti kuti agwirizane bwino ndi konkire. Mapindikidwe a nthiti chifukwa cha udindo wa nthiti, ndi konkire ndi luso kwambiri chomangira, amene akhoza bwino kupirira kunja mphamvu. Chitsulo chopunduka ndi ndodo yachitsulo, chitsulo chowotcherera, ndipo chitha kugwiritsidwa ntchito ngati ma meshes achitsulo. Maonekedwe a nthiti zopingasa ndi spiral, herringbone, crescent ngati atatu. The awiri mwadzina wa opunduka analimbitsa zitsulo bala limafanana ndi m'mimba mwake mwa dzina lozungulira bala ofanana mtanda gawo. Kulimbitsa konkire mu kupsinjika kwakukulu kwamphamvu.
Chithunzi cha Rebar
| Mtengo wa HRB335 | Chemical zikuchokera | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.0-1.6 | 0.4-0.8 | Mtengo wa 0.045 | Mtengo wa 0.045 | ||||||
| Mechanical Property | Zokolola mphamvu | Kulimba kwamakokedwe | Elongation | |||||||
| ≥335 MPA | ≥455 MPA | 17% | ||||||||
| Mtengo wa HRB400 | Chemical zikuchokera | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.2-1.6 | 0.2-0.8 | Mtengo wa 0.045 | Mtengo wa 0.045 | ||||||
| Mechanical Property | Zokolola mphamvu | Kulimba kwamakokedwe | Elongation | |||||||
| ≥400 MPA | ≥540 Mpa | 16% | ||||||||
| Mtengo wa HRB500 | Chemical zikuchokera | C | Mn | Si | S | P | ||||
| 0.25 Max | 1.6 max | 0.8 max | Mtengo wa 0.045 | Mtengo wa 0.045 | ||||||
| Mechanical Property | Zokolola mphamvu | Kulimba kwamakokedwe | Elongation | |||||||
| ≥500 Mpa | ≥630 Mpa | 15% | ||||||||
Mitundu ya Rebars
Kutengera ndi mtundu wazinthu zomwe zimagwiritsidwa ntchito popanga rebar, mitundu yosiyanasiyana ya ma rebar ndi
l 1. European Rebar
European rebar imapangidwa ndi manganese, zomwe zimawapangitsa kupindika mosavuta. Ndiosayenera kugwiritsidwa ntchito kumadera komwe kumakonda kukhala ndi nyengo yoipa kapena zowononga zachilengedwe, monga zivomezi, mphepo yamkuntho, kapena mvula yamkuntho. Mtengo wa rebar iyi ndi wotsika.
l 2. Carbon Steel Rebar
Monga momwe dzinalo likuyimira, amapangidwa ndi chitsulo cha kaboni ndipo amadziwika kuti Black Bar chifukwa cha mtundu wa kaboni. Chotsalira chachikulu cha rebar iyi ndikuti imawononga, zomwe zimawononga konkire ndi kapangidwe kake. Chiŵerengero champhamvu champhamvu chophatikizidwa ndi mtengo chimapangitsa rebar yakuda kukhala imodzi mwazisankho zabwino kwambiri.
l 3. Epoxy-Coated Rebar
Rebar yokutidwa ndi epoxy ndi rebar yakuda yokhala ndi malaya a epoxy. Imakhala ndi mphamvu yolimba yofanana, koma imalimbana ndi 70 mpaka 1,700 kuwirikiza ku dzimbiri. Komabe, zokutira za epoxy ndizosakhwima kwambiri. Kuwonongeka kwakukulu kwa ❖ kuyanika, kumachepetsa kugonjetsedwa ndi dzimbiri.
l 4. Chiboliboli chomata
Rebar yamalata ndiyotheka kuwirikiza makumi anayi ku dzimbiri kuposa chitsulo chakuda, koma ndizovuta kwambiri kuwononga zokutira za malata. Pachifukwa ichi, ili ndi phindu lalikulu kuposa rebar yokutidwa ndi epoxy. Komabe, ndi pafupifupi 40% yokwera mtengo kuposa rebar yokhala ndi epoxy.
l 5. Glass-Fiber-Reinforced-Polymer (GFRP)
GFRP imapangidwa ndi carbon fiber. Popeza amapangidwa ndi ulusi, kupindika sikuloledwa. Imalimbana ndi dzimbiri ndipo ndiyokwera mtengo poyerekeza ndi ma reba ena.
l 6. Rebar yachitsulo chosapanga dzimbiri
Rebar yachitsulo chosapanga dzimbiri ndiye chitsulo cholimbikitsira chokwera mtengo kwambiri chomwe chilipo, pafupifupi kuwirikiza kasanu ndi katatu mtengo wa rebar wokutidwa ndi epoxy. Ilinso ndi rebar yabwino kwambiri yopezeka pama projekiti ambiri. Komabe, kugwiritsa ntchito zitsulo zosapanga dzimbiri muzochitika zonse koma zosiyana kwambiri nthawi zambiri zimakhala zochulukirapo. Koma, kwa iwo omwe ali ndi chifukwa chochigwiritsira ntchito, chitsulo chosapanga dzimbiri chobwezeretsanso 1,500 nthawi zambiri kugonjetsedwa ndi dzimbiri kuposa kapamwamba kakuda; imagonjetsedwa ndi kuwonongeka kuposa mitundu ina iliyonse yosawononga dzimbiri kapena zitsulo zosapanga dzimbiri; ndipo ikhoza kupindika m'munda.
