Taw qhia rau basalt fiber geogrids

1.Definition ntawm basalt fiber geogrid
Basalt geogrid yog xaiv basalt fiber yarn, siv txawv teb chaws advanced warp knitting tshuab woven rau hauv lub substrate, siv warp knitting directional qauv, ua tag nrho cov ntaub nyob rau hauv lub xov tooj lub zog, los txhim kho nws cov cuab yeej cuab tam, thiaj li hais tias nws muaj zoo tensile zog, tsim kua muag zog thiab creep kuj, thiab tom qab high-zoo hloov asphalt coated nrog ib tug planar network ntawm cov ntaub ntawv. Nws ua raws li lub hauv paus ntsiab lus ntawm kev sib raug zoo zoo sib xws, tsom rau nws cov kev ua tau zoo nrog asphalt sib tov, thiab tiv thaiv cov fiber ntau substrate, zoo heev txhim kho kev puas tsuaj thiab shear tsis kam ntawm cov substrate, yog li nws tuaj yeem siv rau kev txhim kho pavement, tiv thaiv kev tawg rutting thiab lwm yam kev phom sij, thiab muab xaus rau asphalt pavement teeb meem.

2.Cov yam ntxwv ntawm qhov yooj yim fiber ntau geogrid

• Cov khoom muaj qhov zoo ntawm Siab zog, tsis tshua muaj elongation, kub tsis kam, siab modulus, lub teeb yuag, zoo toughness, corrosion kuj, ntev kev pab cuam lub neej, yooj yim rau haum, thiab lwm yam., yuav lug siv nyob rau hauv lub qub cement pavement, tshav dav hlau khiav khiav, embankment, dej ntug dej, txoj kab nqes tiv thaiv, txoj kev thiab choj pavement li kev kho mob thiab lwm yam engineering teb, yuav muab cov pavement los txhim kho cov roj rhiab, kev tiv thaiv kev sib tsoo, thiab lwm yam. pavement, tshav kub thiab txias expansion thiab contraction tawg thiab cov nram qab no reflective cracking, thiab nws yuav disperse lub pavement bearing kev nyuaj siab thiab prolong lub neej kev pab cuam ntawm pavement.
• Lub zog tensile siab thiab qis elongation: basalt fiber ntau geogrid yog raws li basalt fiber li raw khoom, thiab basalt fiber tensile lub zog yog siab heev, ntau dua li lwm cov fibers thiab zoo tib yam hlau. Nyob rau tib lub sij hawm nws muaj ib tug siab modulus, muaj ib tug siab tsis kam mus deformation, puas elongation yog tsawg tshaj li 3%.
• Tsis muaj kev nkag mus ntev: raws li cov khoom siv txhawb zog, nrog lub peev xwm los tiv thaiv deformation nyob rau hauv cov ntaub ntawv ntawm lub sij hawm ntev load uas creep kuj tseem ceeb heev, basalt fiber yuav tsis creep, kom ntseeg tau tias cov khoom muaj peev xwm tswj tau lub sij hawm ntev.
• Kev ruaj ntseg zoo ntawm lub cev thiab tshuaj lom neeg: basalt fiber nws tus kheej muaj zog tiv thaiv cov kua qaub thiab alkali corrosion, basalt geogrid tuaj yeem tiv taus ntau yam ntawm lub cev thiab tshuaj yaig, tab sis kuj tiv thaiv kev yaig thiab kev hloov huab cua, kom ntseeg tau tias nws qhov kev ua tau zoo tsis ploj.
• Zoo thermal stability: basalt fiber ntau melting point nyob rau hauv 1500 ° C los yog ntau tshaj, ntev siv kub ntawm -260 ° ~ 650 °, los xyuas kom meej tias lub basalt ntawm geogrid nyob rau hauv lub paving ua hauj lwm kom tiv taus kub stability.
• Lub aggregate ntawm embedded xauv thiab txwv: vim lub basalt ntawm geogrid yog ib tug mesh qauv, asphalt pob zeb nyob rau hauv lub aggregate tuaj yeem nkag mus, thiaj li tsim kom muaj cov neeg kho tshuab embedded xauv. Qhov kev txwv no cuam tshuam cov kev txav ntawm cov khoom sib xyaw, kom cov asphalt sib tov nyob rau hauv cov ntaub ntawv ntawm load yuav ua tau ib tug zoo lub xeev ntawm compaction, siab load-bearing peev xwm, zoo dua load hloov kev ua tau zoo thiab tsawg deformation.
• Thiab asphalt sib xyaw ua ke: basalt geogrid nyob rau hauv cov txheej txheem tom qab kho cov ntaub ntawv coated yog tsim los rau asphalt sib tov, txhua fiber ntau yog coated nrog asphalt muaj ib tug high degree ntawm compatibility, yog li xyuas kom meej tias basalt fiber geogrid nyob rau hauv asphalt txheej yuav tsis raug segregated los ntawm asphalt sib tov ua ke, tab sis khov kho.
• Kev tiv thaiv kev qaug zog: basalt geogrid nyob rau hauv asphalt nto txheej, tuaj yeem ua lub log siab dhau ntawm txoj kev thiab qhov ua rau muaj kev ntxhov siab thiab tensile kev ntxhov siab dispersion, tsim ntawm thaj chaw tsis nyob nruab nrab ntawm ob qhov kev ntxhov siab, kev hloov pauv ntawm kev ntxhov siab ntau dua li kev hloov tam sim ntawd, txo qhov kev hloov pauv ntawm kev ntxhov siab ntawm asphalt nto txheej ntawm kev puas tsuaj. Nyob rau tib lub sijhawm, qhov qis elongation ntawm basalt geogrid txo qhov khoov ntawm txoj kev pavement, kom ntseeg tau tias txoj kev pavement yuav tsis tshwm sim ntau deformation.
• Kub-kub resistant rutting: kev siv basalt geogrid nyob rau hauv asphalt txheej, uas plays ib tug pob txha lub luag hauj lwm nyob rau hauv lub asphalt txheej. Aggregate nyob rau hauv asphalt pob zeb los ntawm daim phiaj, tsim ib tug composite mechanical locking system, txwv lub zog ntawm aggregates, ua rau lub transverse binding quab yuam nyob rau hauv lub asphalt nto txheej, asphalt nto txheej ntawm txhua feem ntawm ib leeg, tiv thaiv asphalt nto txheej ntawm lub laub mus ua si lub luag hauj lwm ntawm kuj mus rutting.
• Anti kub shrinkage cracking: nyob rau hauv tsis tshua muaj kub kub, asphalt qhob qhob txias shrinkage, ua rau tensile kev nyuaj siab, thaum lub tensile kev nyuaj siab tshaj tensile lub zog ntawm asphalt qhob, ua rau tawg. Basalt geogrid nyob rau hauv daim ntawv thov ntawm asphalt nto txheej, txhim kho txheej txheej ntawm transverse tensile zog, thiaj li hais tias lub tensile lub zog ntawm asphalt pob zeb yog zoo heev txhim kho, muaj peev xwm tiv taus tensile kev nyuaj siab ntau yam tsis muaj kev puas tsuaj. Tsis tas li ntawd, txawm hais tias vim yog qhov chaw hauv cheeb tsam ntawm cov kab nrib pleb, nyob rau hauv cov kab nrib pleb tshwm sim muaj kev ntxhov siab, los ntawm basalt geogrid hloov thiab ploj mus, cov kab nrib pleb yuav tsis loj hlob mus rau hauv cov kab nrib pleb.
• Kev ncua ncua ntawm kev cuam tshuam ntawm kev cuam tshuam: nyob rau hauv asphalt nrog basalt geogrid ca txheej, inhibit shear los yog tensile kev nyuaj siab tshwm sim los ntawm cov tsheb thauj khoom, tso tawm cov strain, asphalt qhob tensile reinforcement cov ntaub ntawv, kom ua tiav lub hom phiaj ntawm ncua kev txo cov kab nrib pleb.

3.Qhov kev thov ntawm geogrid nrog yooj yim fiber ntau
Geogrid nyob rau hauv daim ntawv thov ntawm lub ntsiab kev txiav txim siab ntawm lub zog, tsim kua muag, thiab kev sib xyaw ntawm av, durability thiab nws kev lag luam. Tam sim no, geogrid tau siv nyob rau hauv txoj kev loj roadbed, railroad roadbed, av embankment, bank nqes hav txhim khu kev qha, kev txhawb nqa thiab tuav cov qauv, pob zeb tawg txheej kho, pavement li kho thiab xav txog kev tiv thaiv thiab tswj. Tshwj xeeb tshaj yog daim ntawv thov ntawm geogrid nyob rau hauv pavement txhim khu kev qha thiab kev tiv thaiv ntawm reflection tawg. Reflection tawg yog txoj kev nyom-hauv paus theem vim qhov kub hloov pauv lossis cov kabmob thauj khoom loj heev thiab tsim cov kab nrib pleb, thiab dhau los ntawm kev ntxhov siab interlayer propagation rau txoj kev nto, tsim ntsug lossis kab rov tav txav ntawm cov txheej thiab ua rau txoj kev tawg. Daim ntawv thov kev ua haujlwm siab geogrid tuaj yeem txhim kho lub zog interlayer shear lub zog thiab khoov qaug zog ntawm txoj kev, dispersing cov kev ntxhov siab concentration, yog li zoo tiv thaiv qhov tshwm sim ntawm pavement kab nrib pleb, thiab zoo heev txo tus nqi tu txoj kev. Reflection cracking yog ib qho tshwm sim feem ntau pom nyob rau hauv asphalt pavement. Rau qhov kev xav ntawm qhov tawg ntawm txoj kev, nteg ib txheej ntawm geotextile ntawm asphalt nto txheej thiab underlayment tuaj yeem tshem tawm lossis ua kom qeeb ntawm cov txheej txheem ntawm kev cuam tshuam cov kab nrib pleb hauv txheej txheej, yog li ncua kev pab cuam lub neej ntawm txoj kev. Tab sis asphalt pavement pouring kub txog li 160 ℃, ua rau geotextile los yog polymer geogrid quav, deformation, softening, kom nws cov kev ua tau zoo heev txo. Siv rau hauv asphalt pavement geogrid yog qhov zoo tshaj plaws los siv basalt fiber ntau geogrid, vim tias basalt fiber ntau geogrid muaj cov cua sov zoo, thiab lub zog siab, siab modulus, qis elongation, qis coefficient ntawm thermal expansion thiab lwm yam ntxwv.