Dab tsi's Geotextile?
Ib qho geotextile feem ntau txhais tau tias yog cov khoom siv permeable textile siv los ua kom cov av ruaj khov, muab kev tiv thaiv kev yaig lossis kev pab hauv cov kua dej. Ntau yooj yim dua, yog tias nws yog ua los ntawm ntaub thiab faus rau hauv av nws yog tej zaum geotextile! Geotextiles tau siv ntau txhiab xyoo rov qab mus rau Iyiv Pharaohs. Cov ntawv thov geotextile thaum ntxov no yog cov fibers ntuj lossis cov nroj tsuag sib xyaw nrog av. Niaj hnub nimno geotextiles feem ntau yog tsim los ntawm cov khoom siv hluavtaws xws li polypropylene, polyester, polyethylene thiab polyamides. Geotextiles tuaj yeem woven, knitted lossis non-woven. Kev sib txawv ntawm cov polymers thiab cov txheej txheem tsim khoom ua rau muaj qhov sib txawv ntawm geotextiles haum rau ntau yam kev siv pej xeem siv.
Nws ntseeg tau tias thawj daim ntawv thov niaj hnub ntawm geotextiles yog woven industrial fabrics siv nyob rau hauv 1950's. Ib qho ntawm cov ntaub ntawv pov thawj ntxov tshaj plaws yog cov qauv dej ntws hauv Florida hauv xyoo 1958. Qhov kev teeb tsa no tau koom nrog Lub Tsev Haujlwm Saib Xyuas Kev Ua Haujlwm ntawm ntug dej hiav txwv ntawm University of Florida thiab coj qhov chaw ntawm cov cuab yeej ntiag tug uas tau tawg los ntawm cua daj cua dub.
Thawj cov niaj hnub nonwoven geotextile tau tsim nyob rau hauv 1968 los ntawm lub tuam txhab Rhone Poulence hauv Fabkis. Nws yog qhov sib piv tuab koob-punched polyester siv hauv kev tsim kho dej hauv Fabkis thaum xyoo 1970.
Dab tsi yog tam sim no suav tias yog thawj lub Rooj Sib Tham Thoob Ntiaj Teb ntawm Geotextiles tau tshwm sim hauv xyoo 1977 hauv Paris. Lo lus" geotextile" tau sau los ntawm Dr. JP Giroud nyob rau hauv ib daim ntawv uas tau nthuav tawm ntawm lub rooj sab laj.
Non-woven geotextiles zoo li muaj kev xav thiab muab cov dej ntws tawm. Lawv feem ntau hu ua lim ntaub, txawm hais tias woven monofilament geotextiles tuaj yeem raug hu ua lim ntaub. Cov ntawv thov rau non-woven geotextiles suav nrog cov dej ntws tawm, asphalt pavement overlays thiab kev tswj kev yaig.
Ib qho woven geotextile yog ib qho qauv ntawm cov ntaub ntawv uas tsim los ntawm kev sib cuam tshuam ob lossis ntau pawg ntawm cov hlua ntawm txoj cai kaum. Muaj ob hom strands: slit films, uas yog tiaj tus; thiabmonofilaments, uas yog puag ncig. Woven slit-film geotextiles feem ntau nyiam rau cov ntawv thov uas xav tau lub zog siab thiab cov kev xav pom tsis tshua muaj qhov tseem ceeb. Cov ntaub no txo qis hauv cheeb tsam shear tsis ua hauj lwm nyob rau hauv tsis muaj zog subsoil tej yam kev mob thiab pab kev tsim kho ntawm mos subsoils. Woven monofilament geotextiles yog nyiam rau cov ntawv thov uas ob qho tib si lub zog thiab kev pom muaj kev txhawj xeeb, xws li shoreline rip rap daim ntaub ntawv.
Cov ntaub ntawv ntsig txog geotextile xws li cov ntaub tsim rau hauv mats, webs, nets, grids, lossis cov ntawv yas tsim tsis zoo ib yam li geotextiles. Cov no yuav poob rau hauv cov qeb dav dav ntawm geosynthetics.