Hlau yas vuam geogrid nrog muaj zog bearing peev xwm rau txoj kev pavement railway hauv qab daus qhov qhov nqes hav
Khoom Paub meej
Fiberglass geogrid yog ib qho zoo heev geosynthetic khoom siv rau txoj kev txhim kho, qub txoj kev reinforcement, reinforcing txoj kev puag thiab mos av puag. Fiberglass geogrid yog cov khoom lag luam semi-rigid ua los ntawm lub zog siab alkali-dawb fiberglass los ntawm thoob ntiaj teb cov txheej txheem warp knitting thiab coated los ntawm kev kho deg. Nws muaj lub zog tensile siab thiab tsis tshua muaj elongation nyob rau hauv ob qho tib si warp thiab weft cov lus qhia, thiab muaj cov khoom zoo heev ntawm kev kub siab ua haujlwm, tsis tshua muaj txias tsis kam, kev laus tsis kam, corrosion kuj, thiab lwm yam. Nws yog dav siv hauv asphalt pavement, cement pavement thiab roadbed reinforcement thiab railroad roadbed, pas dej ua ke tiv thaiv, tshav dav hlau khiav, xuab zeb tswj thiab lwm yam engineering tej yaam num.
Cov khoom tseem ceeb ntawm fiberglass yog: silicon oxide, yog cov khoom siv tsis muaj zog, nws lub cev thiab tshuaj lom neeg muaj zog ruaj khov, thiab muaj kev hloov pauv siab, hnav tsis kam thiab ua haujlwm txias, tsis muaj kev nkag mus ntev; zoo thermal stability; mesh qauv kom lub aggregate embedded xauv thiab txwv; txhim kho lub peev xwm thauj khoom ntawm asphalt sib tov. Vim tias qhov saum npoo yog coated nrog tshwj xeeb hloov asphalt, nws muaj ob qho khoom sib xyaw ua ke, ob qho tib si zoo heev ntawm fiberglass thiab kev sib raug zoo nrog asphalt sib tov, uas txhim kho kev puas tsuaj thiab shear tsis kam ntawm geogrid.
Nta ntawm fiberglass geogrid khoom
Cov khoom muaj lub zog siab, tsis tshua muaj elongation, kub tsis kam, siab modulus, lub teeb yuag, zoo toughness, corrosion kuj, lub neej ntev, thiab lwm yam. Nws tuaj yeem siv dav hauv cov qub cement pavement, tshav dav hlau khiav khiav, embankment, ntug dej hiav txwv, Kev tiv thaiv kev nqes hav, txoj kev thiab choj pavement txhim kho kev kho mob thiab lwm yam kev lag luam engineering, uas tuaj yeem muab kev txhim kho pavement, ntxiv dag zog, tiv thaiv pavement rutting qaug zog tawg, kub thiab txias expansion tawg thiab Kev xav tawg hauv qab no, thiab tuaj yeem cuam tshuam, ua kom lub neej ntev ntawm txoj kev pavement, siab tensile lub zog qis elongation, tsis muaj kev nkag mus ntev, lub cev zoo thiab tshuaj lom neeg ruaj khov, zoo thermal stability, qaug zog tawg tsis kam, kub kub rutting tsis kam, qis kub shrinkage cracking. tsis kam, ncua kev txo qis ntawm kev xav tawg.
Fiberglass geogrid txheej txheem
(1) Ua ntej tshaj plaws, muab tso rau hauv txoj kab nqes hav ntawm txoj kab nqes, txhawm rau ua kom qhov dav ntawm txoj kab dav dav, txhua sab yog dav los ntawm 0.5m, ziab ntawm cov av zoo substrate rau qib tom qab siv 25T vibratory roller static siab. ob zaug, thiab tom qab ntawd 50T poob siab plaub zaug, qhov chaw tsis sib xws nrog phau ntawv qib.
(2) Tso 0.3m tuab nruab nrab (coarse) xuab zeb, phau ntawv nrog cov neeg kho tshuab leveling, 25T vibration roller static siab ob zaug.
(3) nteg geogrid, geogrid nteg hauv qab saum npoo yuav tsum tiaj tus, ntom, feem ntau yuav tsum tau muab tso rau hauv tiaj tus, ncaj, tsis sib tshooj, tsis muaj curl, kink, ob lub geogrid uas nyob ib sab yuav tsum tau lap 0.2m, thiab raws li txoj kev ntawm txoj kev lateral geogrid lap ib feem txhua. 1m nrog No. 8 hlau rau interpolation kev twb kev txuas, thiab nyob rau hauv lub nteg grids, txhua txhua 1.5-2m nrog U-nails tsau rau hauv av.
(4) thawj txheej ntawm geogrid paved, pib sau lub thib ob txheej ntawm 0.2m tuab nyob rau hauv (coarse) xuab zeb, txoj kev: tsheb xuab zeb mus rau qhov chaw unloaded ntawm ib sab ntawm roadbed, thiab ces siv lub bulldozer mus rau pem hauv ntej. , thawj 2 meters ntawm ob sab ntawm txoj kev taug kev tom qab sau 0.1m, thawj txheej ntawm geogrid folded thiab ces ntim nrog 0.1m hauv (coarse) xuab zeb, txwv tsis pub ob sab mus rau nruab nrab ntawm kev sau thiab ua ntej, txwv tsis pub txhua yam ntawm cov tshuab thaum tsis muaj Qhov no tuaj yeem xyuas kom meej tias geogrid yog tiaj tus, tsis muaj nruas thiab wrinkles, thiab tom qab ob txheej ntawm nruab nrab (coarse) xuab zeb yog flattened, qib ntsuas yuav tsum. yuav tsum tau nqa tawm kom tsis txhob muaj qhov sib npaug ntawm qhov tuab, thiab 25T vibratory cov menyuam yuav tsum tau siv ob zaug tom qab qhov kev ntsuas kom raug.
(5) txheej txheej thib ob ntawm geogrid kev tsim kho nrog thawj txheej ntawm tib txoj kev, thiab thaum kawg sau 0.3m hauv (coarse) xuab zeb, sau tib txoj kev raws li thawj txheej, nrog 25T rau cov menyuam static siab ob zaug, kom cov Roadbed substrate reinforcement yog ua tiav.
(6) nyob rau hauv lub thib peb txheej ntawm (coarse) xuab zeb crushed, nyob rau hauv txoj kab ntawm longitudinal txoj kev ntawm ob sab ntawm txoj kab nqes nteg geogrid ob, ceg tawv 0.16m, thiab txuas nrog tib txoj kev, thiab tom qab ntawd pib lub ntiaj teb kev tsim kho kev lag luam, nteg geogrid. rau kev tiv thaiv txoj kab nqes, txhua txheej yuav tsum tau ntsuas tawm ntawm ntug ntawm kev tso, txhua sab kom ntseeg tau tias txoj kab nqes kho geogrid faus rau hauv loj 0.10m.
(7) Rau txhua ob txheej ntawm cov av ntim, piv txwv li 0.8m nyob rau hauv thickness, ib txheej ntawm geogrid yuav tsum tau muab tso rau ntawm ob sab tib lub sij hawm, thiab ces mus txog rau thaum nws mus txog rau saum npoo ntawm txoj kev lub xub pwg nyom.
(8) tom qab lub tsheb ciav hlau tau ntim, kho txoj kab nqes raws sij hawm, thiab kev tiv thaiv pob zeb qhuav ntawm ko taw ntawm txoj kab nqes, ntu ntawm txoj kab nqes ntxiv rau qhov dav 0.3m ntawm txhua sab, thiab khaws cia 1.5% ntawm cov dab dej.
