Chidule cha Rebar
Chitsulo chopindika ichi ndi cholimba chodziwika bwino chachitsulo/ chomwe chimagwiritsidwa ntchito mu konkire yolimbikitsidwa ndi nyumba zomangira zolimbikitsidwa. Chimapangidwa kuchokera ku chitsulo chofewa ndipo chimapatsidwa nthiti kuti chigwirizane bwino ndi konkire. Kusintha kwa nthiti chifukwa cha ntchito ya nthiti, ndipo konkire ali ndi mphamvu yayikulu yolumikizana, zomwe zimatha kupirira bwino mphamvu zakunja. Chitsulo chopindika ndi ndodo yachitsulo, cholimba cholimba cholumikizidwa, ndipo chingagwiritsidwenso ntchito pa ma meshes achitsulo. Mawonekedwe a nthiti zopingasa ndi ozungulira, herringbone, mawonekedwe atatu ofanana ndi crescent. M'mimba mwake mwachitsulo chopindika cholimba chikugwirizana ndi m'mimba mwake mwachitsulo chozungulira cha gawo lofanana. Konkire yolimbikitsidwa mu mphamvu yayikulu yolimba.
Kufotokozera kwa Rebar
| HRB335 | Kapangidwe ka mankhwala | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.0-1.6 | 0.4-0.8 | 0.045 Max. | 0.045 Max. | ||||||
| Katundu wa Makina | Mphamvu yobereka | Kulimba kwamakokedwe | Kutalikitsa | |||||||
| ≥335 Mpa | ≥455 Mpa | 17% | ||||||||
| HRB400 | Kapangidwe ka mankhwala | C | Mn | Si | S | P | ||||
| 0.17-0.25 | 1.2-1.6 | 0.2-0.8 | 0.045 Max | 0.045 Max | ||||||
| Katundu wa Makina | Mphamvu yobereka | Kulimba kwamakokedwe | Kutalikitsa | |||||||
| ≥400 Mpa | ≥540 Mpa | 16% | ||||||||
| HRB500 | Kapangidwe ka mankhwala | C | Mn | Si | S | P | ||||
| 0.25 Max | 1.6 Max | 0.8 Max | 0.045 Max. | 0.045 Max | ||||||
| Katundu wa Makina | Mphamvu yobereka | Kulimba kwamakokedwe | Kutalikitsa | |||||||
| ≥500 Mpa | ≥630 Mpa | 15% | ||||||||
Mitundu ya Ma Rebar
Kutengera mtundu wa zinthu zomwe zimagwiritsidwa ntchito popanga rebar, mitundu yosiyanasiyana ya rebar imaperekedwa.
l 1. Chipinda Chosungiramo Zinthu cha ku Ulaya
Ma rebar aku Europe amapangidwa ndi manganese, zomwe zimapangitsa kuti azipindika mosavuta. Sizoyenera kugwiritsidwa ntchito m'malo omwe nyengo imakhala yovuta kwambiri kapena momwe zinthu zilili, monga zivomerezi, mphepo zamkuntho, kapena mphepo zamkuntho. Mtengo wa rebar iyi ndi wotsika.
l 2. Chophimba Cholimba cha Chitsulo cha Kaboni
Monga momwe dzinalo likuyimira, imapangidwa ndi chitsulo cha kaboni ndipo imadziwika kuti Black Bar chifukwa cha mtundu wa kaboni. Vuto lalikulu la rebar iyi ndikuti imawononga, zomwe zimawononga konkriti ndi kapangidwe kake. Chiŵerengero cha mphamvu yokoka pamodzi ndi mtengo wake zimapangitsa rebar yakuda kukhala imodzi mwazisankho zabwino kwambiri.
l 3. Rebar Yokutidwa ndi Epoxy
Rebar yokhala ndi epoxy-coated ndi rebar yakuda yokhala ndi epoxy coat. Ili ndi mphamvu yofanana yogwira, koma imapirira dzimbiri nthawi 70 mpaka 1,700. Komabe, epoxy coat ndi yofewa kwambiri. Kuwonongeka kwakukulu kwa chophimbacho, kumachepetsa dzimbiri.
l 4. Chophimba Cholimba cha Galvanized
Galasi yopangidwa ndi galvanized imalimbana ndi dzimbiri nthawi makumi anayi zokha kuposa galasi yakuda, koma n'kovuta kuwononga chophimba cha galasi yopangidwa ndi galvanized. Pachifukwa ichi, ili ndi phindu lalikulu kuposa galasi yopangidwa ndi epoxy. Komabe, ndi yokwera mtengo pafupifupi 40% kuposa galasi yopangidwa ndi epoxy.
l 5. Galasi-Ulusi-Wolimbikitsidwa-Polymer (GFRP)
GFRP imapangidwa ndi ulusi wa kaboni. Popeza imapangidwa ndi ulusi, kupindika sikuloledwa. Ndi yolimba kwambiri ku dzimbiri ndipo ndi yokwera mtengo poyerekeza ndi ma rebars ena.
l 6. Chitsulo Chosapanga Dzimbiri Chokhazikika
Rebar yachitsulo chosapanga dzimbiri ndiyo bar yolimba kwambiri yomwe ilipo, pafupifupi mtengo wake ndi wowirikiza kasanu ndi katatu kuposa rebar yophimbidwa ndi epoxy. Ndi rebar yabwino kwambiri yomwe imapezeka pamapulojekiti ambiri. Komabe, kugwiritsa ntchito chitsulo chosapanga dzimbiri nthawi zonse koma mosiyana kwambiri nthawi zambiri kumakhala koopsa. Koma, kwa iwo omwe ali ndi chifukwa choigwiritsa ntchito, rebar yachitsulo chosapanga dzimbiri nthawi 1,500 imalimbana ndi dzimbiri kuposa black bar; imalimbana ndi kuwonongeka kuposa mitundu ina iliyonse kapena rebar yolimba; ndipo imatha kupindika m'munda.
