Kev rho tawm yog hais txog kev tso cov geosynthetics tshwj xeeb ntawm ob yam khoom sib txawv kom tsis txhob sib xyaw. Geotextiles yog cov khoom siv rwb thaiv tsev tseem ceeb ntawm kev xaiv. Lub luag haujlwm tseem ceeb thiab daim ntawv thov ntawm geotextile isolation technology suav nrog cov hauv qab no:
(1) Nyob rau hauv txoj kev tsheb ciav hlau subgrade, geotextile yog teem nruab nrab ntawm cov ballast thiab cov nplua-grained foundation av; Qhov kev tso ntawm geotextile nruab nrab ntawm coarse-grained roadbed thiab cov av mos foundation filling txheej yog ib qho xwm txheej ntawm geotextile cais.
(2) Nyob rau hauv txoj kev loj subgrade engineering, geotextiles muab tso rau nruab nrab ntawm lub gravel cushion txheej thiab cov av mos hauv paus, los yog nruab nrab ntawm cov kua gravel txheej thiab cov filling foundation kom tsis txhob sib tov ntawm ntxhib thiab nplua av cov ntaub ntawv thiab xyuas kom meej tsim thickness ntawm ntxhib. -grained khoom txheej. thiab tag nrho functionality.
(3) Nyob rau hauv cov cheeb tsam uas muaj dej hauv av siab, geotextile isolation technology yog ib qho kev ntsuas zoo los tswj txoj kev thiab kev tsheb ciav hlau subgrade av nkos.
(4) Tso geotextile hauv qab lub cushion nruab nrab ntawm lub tsev lossis cov qauv thiab cov hauv paus av mos tuaj yeem ua lub luag haujlwm ntawm seismic cais.
(5) Geotextile dej thaiv tuaj yeem thaiv cov dej capillary. Hauv qee qhov chaw uas muaj lub rooj dej siab, nws tuaj yeem siv los tiv thaiv cov av salinization lossis lub hauv paus te heave.
Thaum geotextiles siv nyob rau hauv seismic cais tsim, nws tsis yog ib qho yooj yim "kev rho tawm" teeb meem. Los ntawm lub luag hauj lwm ntawm cov saum toj no-hais geotextile cais txheej, nws kuj muaj xws li cov kev khiav hauj lwm ntawm rov qab pom, kua thiab ntxiv dag zog rau geotextiles nyob rau hauv lub tswv yim engineering daim ntaub ntawv. Yog li ntawd, thaum siv cov thev naus laus zis geotextile cais tawm, nws yog qhov tsim nyog los tshuaj xyuas cov txheej txheem engineering tshwj xeeb los ntawm ntau yam. Ntxiv nrog rau lub cev thiab cov khoom siv kho tshuab ntawm geotextile, nws tseem yuav tsum tau txiav txim siab seb lub geotextile puas muaj qhov xav tau rov qab pom thiab tso dej.
Lwm cov khoom siv feem ntau siv seismic cais tawm yog geomembrane, composite geotextile, composite geomembrane, polyurethane thiab polyurea tshiab geotextile cais txheej, thiab lwm yam. Geotextiles reinforced los ntawm woven, nonwoven los yog ntaub yog hu ua composite geotextiles. Nws yog geotextile uas muaj ob lossis ntau dua cov ntaub ntawv lossis cov txheej txheem. Nws tsis tsuas yog khaws qhov zoo ntawm cov khoom siv ib txheej ua ntej kev sib xyaw, tab sis kuj ua rau nws qhov tsis xws luag mus rau qhov sib txawv. Thaum siv, nws cov khoom tuaj yeem muab kev ua si tag nrho rau qhov zoo ntawm kev ua haujlwm ntxiv, thiab tuaj yeem ua tau raws li qhov tshwj xeeb ntawm qhov project.
Txoj kev loj hlob sai ntawm cov ntaub ntawv polymer tau tso lub hauv paus rau qhov tshwm sim ntawm cov tshiab civil engineering seismic cais cov ntaub ntawv. Polyurethane cov khoom siv polymer yog cov khoom siv polymer uas muaj urethane pawg ntawm cov saw tseem ceeb ntawm cov molecule. Ib qho thaiv polymer uas nws cov saw molecular muaj cov ntu mos thiab ntu ntu ntu ntu ntu ntu. Lub elastomer tsim los ntawm cov khoom siv polyurethane nrog cov khoom zoo rheological tom qab kho tau zoo deformation kev sib koom tes muaj peev xwm, kev sib koom ua ke thiab kev ua haujlwm tsis zoo, thiab nws lub zog compressive siab thiab kho tau. Polyurea yog cov khoom siv polymer tsim los ntawm cov tshuaj tiv thaiv ntawm isocyanate tivthaiv thiab amino compound tivthaiv. Cov khoom yog heev hydrophobic thiab insensitive rau ambient humidity. Nws tuaj yeem muab txau rau hauv dej los ua ib zaj duab xis. Nws tuaj yeem ua haujlwm ib txwm nyob rau hauv ib puag ncig hnyav heev. Yog li ntawd, polyurethane thiab polyurea tau dhau los ua ib yam tshiab ntawm cov khoom siv hauv kev kho cov kab mob tshiab thiab kab mob.
Lub sij hawm xa tuaj: Mar-10-2022