1, Asphalt impregnation kev kho mob rau ntawm qhov chaw ntawm lub siab rhiab nplaum nplaum ntawm geogrid
Lub geogrid nto yog impregnated nrog tus kheej-adhesive siab-rhiab nplaum nplaum los tswj cov geogrid. Asphalt impregnated self-adhesive siab-rhiab nplaum rau ntawm qhov chaw ntawm geogrid yog cov khoom tseem ceeb ntawm geogrid. Piv nrog rau lwm cov geosynthetics, HDPE geomembrane tag nrho qhia nws qhov tseeb thiab ua tau zoo. Geogrid feem ntau yog siv los ua cov khoom siv ntxiv ntawm cov qauv hauv ntiaj teb los yog cov khoom siv ntxiv ntawm aluminium alloy geotextile chaw tsim tshuaj paus.
Geogrid muab faib ua plaub pawg: yas geogrid, steel-yas geogrid, iav fiber ntau geogrid thiab iav fiber ntau polyester geogrid. Yas geogrid yog ib daim duab plaub los yog cov khoom sib txuas ntawm cov khoom siv polymer uas tsim los ntawm kev sib tw shearing. Raws li qhov sib xws ntawm extrusion kev taw qhia thaum lub sijhawm luam ntawv, nws tuaj yeem muab faib ua ob hom: ib-txoj kev shear thiab ob-txoj kev extrusion.
Nws yog txhawm rau txhawm rau txhawm rau ntawm qee daim phiaj polymer cuam tshuam los ntawm extrusion, thiab tom qab ntawd thawb rau pem hauv ntej ntawm kev taw qhia ncab hauv qab qhov chaw txias. Thaum qhov tawg ntawm geotextile nce mus txog 10% ntawm qhov yob loj, peb yuav tsum tau ua haujlwm ntawm qhov puas, thiab txuas ob lub ntiaj teb nthwv dej ze ze. Tsis tas li ntawd, yog tias qhov sib txawv ntawm txoj kab nqes saum npoo yog txog li 10% ntawm cov yob loj, lub geotextile yob yuav tsum tau muab tshem tawm thiab hloov nrog lub yob tshiab. Cov khoom siv txheej siv los ntawm cov chaw tsim khoom geogrid geomembrane hauv cov txheej txheem tom qab kho yog tsom ntawm cov chaw tsim khoom asphalt composite khoom.
Txhua qhov fiber ntau tau them tag nrho thiab ua tau zoo nrog asphalt, txhawm rau xyuas kom meej tias cov iav fiber ntau geogrid hauv asphalt txheej yuav tsis raug txiav tawm ntawm cov khoom siv asphalt, tab sis khov kho. Lub geogrid yuav tsum tau muab tso rau ntawm lub maj mam qis bearing txheej raws li npaj spoil loj. Qhov muab tub lim ntawm lub hauv paus sab saud yuav tsum tsis txhob tho qhov khib nyiab ntawm geogrid. Thaum lub geogrid tau pw, cua ceev yog siab heev hla lub hauv paus axis ntawm embankment. Geogrid yog nteg longitudinally. Lub nteg yuav tsum nruj kom tsis txhob wrinkling, twisting los yog pitting.
Lub geogrid txuas nrog kab rov tav los ntawm txoj kev sib tshooj, thiab kev caij tsheb tsis ntau tshaj 20cm. Tom qab lub geogrid tau muab tso rau, phau ntawv muab tso rau sab sauv txheej yuav tsum ua kom tiav tam sim ntawd kom tsis txhob raug tshav ntuj txhua xyoo puag ncig. Tom qab ntawd nqa cov khoom thauj khoom siv tshuab, theem thiab dov. Cov neeg kho tshuab paving thiab dov yog nqa tawm los ntawm ob sab mus rau ob sab, thiab dov yog nqa tawm ntawm ob sab mus rau ob sab, thiab lub compactness yog tswj kom ua tiav cov txheej txheem tshem tawm.
2, Geogrid muaj lub zog tensile ntawm cov hlau me me
Lub geogrid rearranges ntev saw hydrocarbon molecules ntawm lub polymer nyob rau hauv ib tug ncaj kab raws li stretching kev taw qhia los ntawm ib tug tshwj xeeb txheej txheem technology. Lub zog khi ntawm cov saw hlau molecular yog qhov muaj zog heev, yog li nws muaj zog tensile ntau dua thiab qis dua elongation. Piv txwv li, lub zog tensile yog 5-10 npaug siab dua li ua ntej ncab, thiab qhov elongation tsuas yog 10% - 15% siab dua li ua ntej ncab. Lub interlocking quab yuam ntawm hais nyob rau hauv daim phiaj nce, thiab kev sib txhuam coefficient nce ho. Nws tuaj yeem hais tias ntawm ntau cov geosynthetics, lub zog tensile ntawm geogrid yog qhov siab tshaj plaws nyob rau hauv tib hom, thiab nws lub zog tensile yog ze rau cov hlau me me. Ntxiv nrog rau nws lub zog tensile muaj zog, geogrid kuj muaj qhov ua tau zoo, vim tias cov khoom siv geogrid yog ua los ntawm high-density polyethylene los yog polypropylene yas raws li cov khoom siv tseem ceeb, thiab muaj cov tshuaj tiv thaiv kev laus xws li UV thiab cov pa roj carbon dub, uas tuaj yeem ua rau muaj kev kub ntxhov. tiv thaiv kev yaig ntawm cov kuab tshuaj organic xws li acid, alkali, ntsev, cawv, roj av thiab UV. Raws li cov ntaub ntawv cuam tshuam, kev pabcuam lub neej ntawm geogrid tsim los ntawm cov tuam txhab geogrid tuaj yeem ncav cuag 120 xyoo nyob rau hauv qhov kub thiab txias thiab tsim kom muaj kev thauj khoom. Tau kawg, vim li cas vim li cas geogrids tau siv dav yog tias geogrids tau piav qhia hauv qab no muaj cov yam ntxwv zoo heev. Nyob rau hauv txoj kab nqes hav zoo nkauj, cov yas geocell ntawm cov chaw tsim khoom geogrid, tom qab lub geocell txuas ntxiv thiab qhib, nthuav tawm ib qho honeycomb peb-dimensional geocell, thiab sau cov geocell nrog lub ntiaj teb thiab pob zeb los yog cov ntaub ntawv pob zeb los tsim cov qauv nrog kev ruaj khov thiab ruaj khov. loj stiffness los tsim cov nyhuv stability ntawm txoj kab nqes. Nws tseem tuaj yeem cog qoob loo qee cov nroj tsuag, lossis cov nroj tsuag me me thiab lwm cov nroj tsuag hauv geogrid, tsim cov iav fiber ntau daim phiaj yog cov khoom tseem ceeb geosynthetic, uas muaj qhov ua tau zoo thiab cov nyhuv piv nrog rau lwm cov ntaub ntawv geosynthetic. Cov iav fiber ntau daim phiaj feem ntau yog siv los ua kev txhawb nqa rau cov txheej txheem hauv av los yog cov ntaub ntawv sib xyaw
Post lub sij hawm: Mar-08-2023