9 Marudzi eRebar Anowanzoshandiswa Mukuvaka
Kuvandudza mapuranga endarira kunoshandiswa kubatsira krete kugadzirisa masimba emagetsi. Concrete inokwana zvakasimba kuomesa masimba nemasikirwo echisikiro, asi simba remhepo rinogona kukanganisa.
Mabhiriyoni asina kukodzera ekusimbisa simbi ave ari mutemo wakafanira kubva muna 1968, asi mabhesi akajeka anoshandiswawo mumamiriro ezvinhu apo simbi yekusimudzira inotarisirwa kupera. Izvi ndizvo zvinowanzoitika kana vakagadzirirwa mumigwagwa yepamusoro uye mabhiriji ega.
Iyo yakagadziriswa pamusana weberi inobatsira krete kuomerera kune yakasimbiswa nesimbi yakakwirira. Chimiro pane bhu rakaora haritauri, asi nzvimbo uye kukwirira kwe "matambudziko" zvinotungamirirwa.
Rebar: Reinforcing Steel Bar Specifications
Kusimudza mabhaji kunopisa-kupoteredzwa uchishandisa zvinhu zvakasiyana-siyana zvesimbi. Mapapiro mazhinji anobva kune mabhandi matsva emidziyo, asi mamwe akatakurwa kubva kune zvigadzirwa zvemidziyo kana kumigwagwa. Zvinokanganisa zvinoshandiswa kuve nezvimwe rudzi rwekugadzirisa kunogona kushandiswa kutora gorosi rakabudisa kuburitsa danda resimbi.
IAmerican Society for Testing and Materials (ASTM) yakagadzira chirevo chekutsanangurira chimiro chekuti mapoka ose anofanira kutevera:
- Nhamba yacho inofanira kuziva chiyero chebhari.
- Rudzi rwechiratidzo chesimbi hunofanira kuonekwa. Semuenzaniso, "N" zvinoreva kuti bhari yakabviswa kubva kune billet itsva, "W" inomiririra weldable steel, uye "A" inotaura nezvesimbi yakagadzirwa.
- Iko rebar rekuzivikanwa kwebhizimisi inofanira kutaurwa: Izvi zvinenge 60 kana 75, kana metric 420 kana 520. Chikoro chinoratidza rebar rekuberekwa simba.
- Chiratidzo chinoratidza chigadziro chakakonzera bhari chinofanira kubatanidzwa: Izvi zvinowanzova tsamba imwe chete kana chiratidzo chinoshandiswa.
Nhasi-simba kusimbisa midziyo yesimbi yakarongedza zvitatu chete zvinoratidza gorosi rakabudisa bhari, rear size, uye rudzi rwesimbi yakashandiswa. Simba-simba rekusimbisa simbi rinoshandisa rutsigiro rwenzira yekuratidza bhidhi yesimbi.
Kana iyo rebar ine mitsara miviri, inoratidza kuti rebar yakaiswa mukati me 75,000-psi mabhagi. Apo imwe mutsara uripo, inomirira 60,000-psi bar.
Marudzi aRebar
- Steel Cbon Rebars: Ichi ndicho chinonyanya kunyanya kushandiswa uye dzimwe nguva chinonzi "girafu." Inonyanya kushanduka asi inoputika nyore nyore kupfuura mamwe mhando, ichiita kuti isakodzeri munzvimbo dzinenge dzichikwira mumvura yakakwirira kana muzvivako zvinowanzoratidzwa mumvura. Vakawanda vanofunga kuti carbon steel rebars ndiyo inonyanya kusarudzwa mune dzimwe mhando dzekuvaka, zvisinei.
- Welded Wire Yakagadzirwa: Welded wire fabric (WWF) inogadzirwa kubva mumatare ematare akarongedzerwa pamakona akarurama uye kusungirirwa kwegetsi pamatare ose emhepo. Inogona kushandiswa mu-slab-on-ground slabs apo pasi rakanyatsogadzirwa. Chigadzirwa chakaremara cheganda rakasungirirwa wendarira rinogona kushandiswa mumasvingo uye pamadziro edzimba pasi . Izvi zvinowanzoshandiswa mumugwagwa unoiswa mumugwagwa , mashizha ebhokisi, zvirongwa zvekunyura, uye mune zviduku zvidhiniti.
- Sheet-Metal Kuvandudza Bhofu: Sheet-metal kusimbiswa inowanzoshandiswa mumadziro ezasi, masitepisi, uye padenga kuvaka . Sheet-metal reinforcing inoumbwa nesimbi yakagadzirwa nemapuranga akavezwa akaiswa mukati mekunaya kwechimwe chegumi nematanhatu chechidimbu chakadzika nemakomba akarova nguva dzose.
- Epoxy-Coated Rebars: Epoxy- revated revars inodhura uye inoshandiswa munzvimbo dzinenge dzichibatana nemvura yemunyu kana kuti dambudziko rekuora rinenge riri pedyo. Dambudziko rega nderokuti kupfeka kunogona kunge kwakanyanyisa, saka mabhagi anofanira kunyorerwa kubva kumutengesi ane mbiri.
- Ereurope dzeEurope: Kupanduka uku kunowanzogadzirwa nemanganese kuitira kuti ivo vanowanzokotama nyore nyore. Hazvikodzeri kushandiswa munzvimbo dzinowanzotarisana nemamiriro ekunze akakomba kana kuti geological madhara, zvakadai sedengenyeke, mhirizhonga, kana matutu. Zvinogona kuva mari inobatsira, zvakadaro.
- Stainless Steel Rebars: Sirivha isina kushandiswa inogona kushandiswa seimwe nzira yekusimbisa bhandi yesimbi ne carbon car reinforcement. Kushandisa simbi isina simbi yekusimudzira mizariro haizogadziri galvanic corrosion, uye inogona kuva inogadzirisa-inogadzirisa mamiriro ezvinhu munzvimbo dzinotarisana nezvinetso zvekuora kana kuti kugadzirisa kwakaoma uye kunodhura. Izvi zvinoparadza zvinodarika makumi masere kudarika mapoka epoxy-akavezwa, zvisinei.
- Yakagadziriswa Rebars: Mapapiro eGalvani anowanikwa makumi mana akawanda asingagadzirwi nehutori kupfuura kabhoni yemapuranga, achiita kuti zvive zvakanaka kune zvivako zvichave zvakanyatsobudiswa mumvura ine mvura uye inonaya. Izvo zvinokosha, zvisinei.
- Kuwedzerwa Metal kana Wire Mesh Rebars : Kuwedzerwa simbi kana tambo mesh kusimbisa chimwe chigadzirwa chakanaka chekrete. Denderedzwa simbi inogadzirwa nokuveza shati yesimbi mumiganhu yakafanana iyo inozobudiswa kuti igadzire chimiro chemadamondi kana chimiro chepamusoro pakati pega rimwe rega. Dare rakawedzerwa rinowanzoshandiswa sekusimbiswa munzvimbo umo huwandu hwakawanda hwepende inotarisirwa, kana kuti kusimbisa chiedza chekrete. Wire mesh reinforcement inogona kushandiswa pamagwagwa emigwagwa, zvigadzirwa zvekrete pads, kana nzvimbo dzakagadzikana dzisingagamuchiri zvikwereti zvinorarama kana mutoro.
- Girazi-Fiber-Yakasimbiswa-Polymer (GFRP) Marebho: Akafanana nekbon fiber, GFRP mapfupa haazogadziri-nguva dzose, pasi pemamiriro ose. Iwe uchabhadhara zvikuru pane izvozvo, zvisinei. Aya mapanduki anogona kukwanisa katatu kudhura kwemapanduki epoxy-akavezwa.
Rebar Mutengo uye Mari
Mari inoshandiswa rebar inogona kufungidzirwa pane imwe netsoka kana nendima. Mutengo wesimbi unogona kuchinja kubva pamwedzi kusvika pamwedzi uye kunyange zuva nezuva, naizvozvo kana ukawana mutengo wakanaka, iva nechokwadi chokuti urivhare munguva isati yasvika