Phunzirani za ntchito yomatira ya basalt fiber yolimbitsa simenti ndi ma tendon a BFRP

Zomwe zimakhudza kwambiri magwiridwe antchito a mgwirizano

1. Fiber voliyumu doping ndi kutalika

Kuchuluka kwa doping Basalt ulusi wodula kwambiri umakhudza kwambiri mphamvu yomangirira, ndipo mayeso akuwonetsa kuti kuchuluka kwa doping kwa 0.2% kumakhala ndi zotsatira zabwino kwambiri pakuwonjezera mphamvu zomangira, ndipo kugwiritsa ntchito kwambiri doping kungayambitse kuchepa kwa magwiridwe antchito chifukwa cha kuchuluka kwa fiber.

Utali wa CHIKWANGWANI (monga 6mm ndi 18mm) uli ndi mphamvu zochepa pa mphamvu ya mgwirizano, koma ulusi waufupi umabalalika mosavuta kuti uchepetse kuwonongeka kwa mawonekedwe.

2. Mphamvu kalasi ya zobwezerezedwanso konkire

Kuchulukitsa mphamvu ya konkriti yobwezerezedwanso (mwachitsanzo, kuchokera ku C30 mpaka C40) kumakulitsa mphamvu ya mgwirizano pakati pa B.Kulimbitsa Frp ndi gawo lapansi, koma kuwonjezeka kuli kochepa, ndipo mawonekedwe amatha kukhala ndi brittle peeling pamene kalasi ya mphamvu ndi yokwera kwambiri.

3. Interface chithandizo ndi coupling wothandizira

Sandblasting pamwamba Mtengo wa BFRP kulimbikitsa kuonjezera roughness ndi kusintha makina kuluma mphamvu; kuwonjezera silane coupling wothandizira amatha kukhathamiritsa kugwirizana kwa mankhwala pakati pa fiber ndi resin matrix ndikuchepetsa kutsetsereka kwapakati.

Mayesero ndi njira za zomatira katundu

1. Center kukokera kunja mayeso

Mphepete mwa bond-slip curve idaphunziridwa kudzera mu mayeso a pullout, ndipo zidapezeka kuti njira yowonongera ma bond inali makamaka kukokera kwa tendon kapena kupatukana konkriti. Kuwonjezera kwa ulusi wa basalt imatha kuchedwetsa kuwonongeka kwa konkriti ndikuwonjezera ductility.

Mtundu wa mphamvu zomangira zomangira ndi 6-12 MPa, ndipo mtengo wake umakhudzidwa ndi mulingo wa fiber, kulimbitsa m'mimba mwake (mwachitsanzo, 16 mm) ndi njira yothandizira mawonekedwe.

2. Bond stress distribution model

Kupsyinjika kwa mgwirizano kumagawidwa mosagwirizana ndi kutalika kwa kulimbitsa, ndipo kupanikizika kwapamwamba kumayikidwa pamapeto otsegula. Chitsanzo cha chiphunzitsocho chiyenera kuganizira za kukana kufalikira kwa ming'alu ndi mawonekedwe a friction ya konkire yolimbitsa fiber.

Ubwino wa ntchito ndi milandu yaukadaulo

1. Kukana dzimbiri ndi kulimba

BFRP reinforcement imasunga zoposa 90% ya mphamvu zake zomangira m'malo akukokoloka kwa ma chloride (mwachitsanzo, uinjiniya wapamadzi), womwe ndi wabwino kwambiri kuposa mipiringidzo yachitsulo ndi fiberglass.

Chitsanzo: Mlatho wa Qingdao Cross-Sea Bridge utenga BFRP reinforcement kuti ilowe m'malo mwa zitsulo zolimbitsa thupi, ndipo nthawi yake ya moyo wawonjezedwa mpaka zaka 100.

2. Zopepuka komanso Zowoneka bwino

The kachulukidwe BFRP reinforcement ndi 1/4 yekha wa zitsulo, amene angagwiritsidwe ntchito kulimbikitsa matabwa konkire kuchepetsa structural kulemera ndi 20% -30%, ndipo nthawi yomweyo kumapangitsanso zivomezi mphamvu kumwa mphamvu ndi kuzimata chilimbikitso.

Zovuta Zomwe Zilipo ndi Mayendedwe Okhathamiritsa

1. Kulimbitsa mgwirizano pakati pa nkhope

Vuto lomwe liripo: Kulumikizana pakati pa ulusi ndi matrix a simenti kumakonda kusweka chifukwa cha kupsinjika, ndipo ma nano-modified interfacial agents (mwachitsanzo, nano-SiO₂ doped) amayenera kupangidwa kuti apititse patsogolo kulumikizana kwamankhwala.

2. Kuchita kwa nthawi yayitali komanso kukhazikika

Kupanda kwa nthawi yayitali yolowera pansi pa kutentha kwambiri komanso chinyezi chambiri (mwachitsanzo, zaka zopitilira 10), kuyezetsa ukalamba kofulumira kumafunika kutsimikizira; Mapangidwe ake sanafanane m'maiko onse, ndipo ngakhale China yatulutsa mulingo wa GB/T 38143-2019, malangizo atsatanetsatane akufunikabe kuwongolera.

3. Mapangidwe ogwirizana amitundu yambiri

M'tsogolomu, tikhoza kufufuza ukadaulo wosakanizidwa wa Mtengo wa BFRP kulimbikitsa ndi chitsulo CHIKWANGWANI / mpweya CHIKWANGWANI kuti amange gradient composites ndi kulinganiza mphamvu ndi ductility.

Malangizo a Kafukufuku Wamtsogolo  

1. Kuyang'anira mwanzeru komanso kupanga ma digito

Masensa ophatikizika a fiber optic mu ma tendon a BFRP, kuwunika kwenikweni kwa zovuta za mawonekedwe a bond ndi chitukuko cha mng'alu, kuphatikizidwa ndi kayeseleledwe komaliza kuti mukwaniritse mapangidwewo.

2. Njira yokonzekera mpweya wochepa

Chepetsani kusungunuka kwa basalt fiber ndi kutentha kojambula (pakali pano 1400-1500 ℃), kukulitsa utomoni wochiritsa otsika kuti muchepetse kugwiritsa ntchito mphamvu.

3. Kugwiritsa ntchito moyenera zinthu zobwezerezedwanso

Phatikizani zowonjezeredwa zowonjezeredwa ndi ulusi wa basalt ndi zinyalala zomanga kuti mulimbikitse "zongowonjezeranso" zobiriwira zobiriwira ndikuchepetsa kugwiritsa ntchito zinthu.

Chidule

Kafukufuku wokhudzana ndi magwiridwe antchito a basalt fiber-reinforced cementitious materials ndi Mtengo wa BFRP ma tendon apeza zotsatira za siteji ndi siteji, koma ntchito yake yayikulu ikufunikabe kupyola zopinga za kukhathamiritsa kwapakati, kutsimikizira kulimba kwa nthawi yayitali komanso mapangidwe okhazikika. M'tsogolomu, kudzera m'njira zosiyanasiyana (mwachitsanzo, zida zanzeru, njira zokhala ndi mpweya wochepa), zikuyembekezeka kuzindikira kupita patsogolo kwaukadaulo pantchito zaukadaulo wam'madzi ndi kulimbikitsa zivomezi, ndikuthandizira chitukuko cha nyumba zokhazikika.