Amfani da benayen gada na Fiber Reinforced Polymer (FRP) yana canza yanayin ginin gada.
Gada na gargajiya da aka yi da simintin siminti da ƙarfe na ƙarfe sun daɗe suna fama da tsatsa da gurɓatacce, ba wai kawai rage tsawon rayuwar gadoji ba har ma da yiwuwar haifar da haɗari mai tsanani. Wannan batu ya yi tsanani musamman a yankunan bakin teku da ke da yawan sinadarin chloride ion, inda lalata gadoji ke da matsala sosai. Don haka, haɓaka dorewar benen gada ya zama babban ƙalubale a aikin injiniyan gada.
Ana ɗaukar FRP a matsayin kayan da ya dace don haɓaka dorewar gadoji saboda kyakkyawan juriya na lalata. Tsarin gada na FRP gabaɗaya suna zuwa nau'i biyu ne: duk tsarin FRP da benaye na FRP-concrete composite decks, tare da nau'ikan nau'ikan ɓangarori daban-daban. Idan aka kwatanta da benayen da aka ƙarfafa na gargajiya, ɗakunan FRP suna ba da fa'idodi masu yawa: an riga an yi su a masana'antu, masu nauyi, da sauri don shigarwa; suna tsayayya da lalata daga gishirin kankara, ruwan teku, da ions chloride, rage farashin kulawa; Hasken nauyin su yana rage nauyi akan tsarin tallafi; a matsayin kayan abu na roba, za su iya komawa zuwa matsayinsu na asali a ƙarƙashin nauyin kaya na lokaci-lokaci; kuma suna da kyakkyawan aikin gajiyawa. A aikace aikace, tsarin bene na FRP ba kawai ana amfani da su a cikin sabbin gine-ginen gada ba amma kuma sun dace da gyaran tsofaffin gadoji, tare da maye gurbin ginshiƙan kankare na gargajiya. Wannan ba kawai yana rage nauyin bene ba amma yana haɓaka ƙarfin ɗaukar nauyi da juriya na lalata gada.
![FRP Bridge Decks3tmy](https://ecdn6.globalso.com/upload/p/526/image_other/2023-12/6572e708c75d827884.jpg)
Halayen ɗaukar nauyi na bene gada FRP sun haɗa da lokacin lanƙwasawa, ƙarfin ƙarfi, da matsatsi na gida. Babban bene na FRP yawanci ya ƙunshi fatun FRP na sama da na ƙasa da gidan yanar gizo, tare da matsi na sama mai ɗauke da fata, ƙaramar fata mai ɗauke da tashin hankali, da yanar gizo da farko yana tsayayya da ƙarfi yayin haɗa fatun na sama da na ƙasa. A cikin bene na FRP-concrete/ itace, ana sanya siminti ko itace a cikin yankin matsawa, yayin da FRP galibi ke ɗaukar tashin hankali. Ƙungiyoyin tsagewar da ke tsakanin su ana canja su ta hanyar haɗin kai ko hanyoyin mannewa. Ƙarƙashin nauyin da aka keɓance, bene na FRP kuma suna fuskantar lanƙwasawa, naushi ƙarfi, ko murkushe sojoji; Abubuwan asymmetrical kuma suna haifar da togiya akan sashin. Kamar yadda FRP abu ne mai anisotropic kuma mara daidaituwa, ana buƙatar ƙaddara sigogin aikin injinsa ta hanyar ƙirar laminate, yin ƙirar bene na FRP mai rikitarwa, yana buƙatar haɗin gwiwa tsakanin masu zanen kaya da ƙwararrun masu samar da FRP.