Xov xwm

Geogrid siv high-strength polyester fiber los yog polypropylene fiber ua raw khoom, thiab siv warp knitting oriented qauv.Lub warp thiab weft yarns nyob rau hauv cov ntaub yog tsis muaj dabtsi yog khoov, thiab cov kev sib tshuam yog khi nrog high-strength fiber filament los tsim ib tug ruaj khov kev sib koom tes, muab tag nrho cov kev ua si rau nws txhua yam khoom.Koj puas paub tias nws txoj kev qaug zog tawg ua haujlwm zoo npaum li cas?
Cov nyhuv tseem ceeb ntawm asphalt overlay ntawm lub qub cement pob zeb pavement yog los txhim kho daim ntawv thov kev ua haujlwm ntawm txoj kev pavement, tab sis nws tsis muaj txiaj ntsig ntau rau cov kabmob.Lub pob zeb ua pob zeb hauv qab qhov sib tshooj tseem ua lub luag haujlwm tseem ceeb hauv kev coj tus kheej.Lub asphalt overlay ntawm lub qub asphalt qhob pavement yog txawv.Lub asphalt overlay yuav ris lub nra nrog lub qub asphalt qhob pavement.Yog li ntawd, asphalt overlay ntawm asphalt qhob pavement yuav tsis tsuas yog tam sim no xav txog tej kab nrib pleb, tab sis kuj qaug zog tawg vim lub sij hawm ntev ntawm load.Cia peb txheeb xyuas qhov kev ntxhov siab ntawm asphalt overlay ntawm lub qub asphalt qhob pavement: vim hais tias asphalt overlay yog ib qho yooj yim pavement nrog tib yam li asphalt overlay, txoj kev nto yuav deflect thaum raug cov nyhuv load.Lub asphalt overlay ncaj qha kov lub log yog nyob rau hauv siab, thiab qhov saum npoo yuav raug nro nyob rau hauv cheeb tsam tshaj lub log load margin.Vim tias lub zog quab yuam ntawm ob qhov kev ntxhov siab yog qhov sib txawv thiab nyob ze rau ib leeg, qhov kev sib tshuam ntawm ob qhov kev ntxhov siab, uas yog, qhov kev hloov ntawm lub zog tam sim ntawd, yooj yim rau kev puas tsuaj.Nyob rau hauv cov nyhuv ntawm lub sij hawm ntev load, qaug zog tawg tshwm sim.
Hauv asphalt overlay, geotextile tuaj yeem txo qhov kev ntxhov siab saum toj no thiab kev ntxhov siab tensile, thiab tsim ib qho chaw tsis nyob nruab nrab ntawm ob qhov kev ntxhov siab.Ntawm no, kev ntxhov siab hloov maj mam es tsis txhob tam sim ntawd, txo qhov kev puas tsuaj rau asphalt overlay tshwm sim los ntawm kev hloov pauv tam sim ntawd.Qhov qis elongation ntawm cov iav fiber ntau geogrid txo qhov deflection ntawm pavement thiab xyuas kom meej tias txoj kev pavement yuav tsis raug kev txom nyem los ntawm kev hloov pauv deformation.
Unidirectional geogrid yog extruded rau hauv cov ntawv nyias los ntawm polymer (polypropylene PP lossis polyethylene HDPE), thiab tom qab ntawd xuas nrig ntaus rau hauv cov mesh tsis tu ncua, thiab tom qab ntawd ncab longitudinally.Nyob rau hauv cov txheej txheem no, cov polymer yog nyob rau hauv ib tug linear lub xeev, tsim ib tug ntev oval network qauv nrog uniform tis thiab siab node zog.
Daim phiaj unidirectional yog ib hom kev muaj zog geosynthetics, uas tuaj yeem muab faib ua unidirectional polypropylene daim phiaj thiab unidirectional polyethylene daim phiaj.
Uniaxial tensile geogrid yog ib hom kev muaj zog geotextile nrog siab molecular polymer ua cov khoom siv tseem ceeb, ntxiv nrog qee cov tshuaj tiv thaiv ultraviolet thiab tiv thaiv kev laus.Tom qab unidirectional stretching, tus thawj faib saw molecules yog reoriented mus rau ib tug linear lub xeev, thiab ces extruded rau hauv ib lub phaj nyias, cuam tshuam cov pa mesh, thiab ces stretched longitudinally.Material Science.
Nyob rau hauv cov txheej txheem no, cov polymer yog coj los ntawm lub xeev linear, tsim ib tug ntev elliptical network qauv nrog uniform tis thiab siab node zog.Cov qauv no muaj lub zog tensile siab heev thiab tensile modulus.Lub zog tensile yog 100-200Mpa, ze rau qib qis carbon steel, uas zoo dua li cov khoom siv los yog cov khoom siv tam sim no.
Tshwj xeeb, cov khoom no muaj qhov siab siab thoob ntiaj teb thaum ntxov (elongation ntawm 2% - 5%) tensile zog thiab tensile modulus.Nws muab ib qho zoo tagnrho system rau av cog lus thiab diffusion.Cov khoom no muaj lub zog tensile siab (> 150Mpa) thiab siv tau rau ntau yam av.Nws yog ib hom kev txhawb nqa khoom siv dav siv tam sim no.Nws cov yam ntxwv tseem ceeb yog lub zog tensile siab, zoo creep kev ua tau zoo, kev tsim kho yooj yim thiab tus nqi qis.