Dab tsi yog kev siv cov non-woven geotechnic fabrics?
Nonwoven geotextiles yog cov ntaub ntawv zoo tshaj plaws rau kev saib xyuas thiab kho asphalt pavements
Txoj kev engineering yog qhov txuas tseem ceeb hauv kev tsim kho vaj tse thiab kev siv lub ntsiab ntawm nonwoven geotextiles. Hauv 2017, ntawm lub rooj sib tham txog kev thauj mus los, cov hom phiaj tshiab tau muab tso rau hauv kev tsim kho txoj kev hauv xyoo 2017: 1.8 trillion yuan hauv kev nqis peev ruaj khov hauv kev thauj mus los thiab dej, 5, 000 km ntawm txoj kev loj tshiab, ntau dua 200,{ {7}} km ntawm txoj kev nyob deb nroog tshiab kho tshiab, thiab kev txom nyem tshiab 7, 000 cov zos hauv cheeb tsam tau nkag mus rau txoj kev nyuaj.
Nonwoven geotextiles ua lub luag haujlwm tseem ceeb hauv kev tsim kho ntawm ntau txoj hauv kev. Ua ntej, non-woven geotextiles yog cov ntaub ntawv zoo tshaj plaws rau kev kho thiab kho asphalt pavements. Non-woven geotextiles muaj cov yam ntxwv ntawm lub zog siab, cov qauv zoo ib yam, me me shrinkage coefficient, muaj zog toughness, thiab loj elongation. Tom qab ua ke nrog asphalt los ntawm dipping los yog txau, nws tuaj yeem ua si cov nyhuv ntawm cov dej tsis sib haum thiab kev txhawb zog tib lub sijhawm. Yooj yim thiab ruaj khov ntawm txoj kev. Secondly, non-woven geotextiles yuav siv tau rau ruaj khov kho ntawm tsis muaj zog roadbeds. Thaum lub sij hawm kev tsim kho txoj kev, lub non-woven geotextile yog nteg nyob rau hauv lub mos subgrade nrog high noo noo cov ntsiab lus, uas muaj peev xwm tiv thaiv kev hloov ntawm cov av me me mus rau high-strength subgrade cov ntaub ntawv, thiab nyob rau tib lub sij hawm tso tawm cov dej nyob rau hauv cov av los tiv thaiv. av los ntawm softening thiab loosening.
In addition, geotextiles can repair pavement and delay reflection cracks. In road reconstruction, in order to solve the problems of damaged concrete pavement and enlarged expansion joints between concrete slabs, hot-melt polyester long-fiber geotextiles are selected. /m, transverse direction>9.5kN / m; 5 feem pua longitudinal tensile force Ntau tshaj los yog sib npaug rau 4.5kN/m, transverse 5 feem pua tensile force Ntau tshaj los yog sib npaug rau 5.0kN/m. Tom qab ntxuav, leveling thiab sau cov pavement puas thiab expansion pob qij txha, cov asphalt yog kis, thiab cov geotextile kis tusyees thaum asphalt tsis txias thiab tseem muaj adhesion, thiab ces dov nrog ib tug log tsheb rau cov menyuam mus txog rau thaum ob tug zoo sib xws, thiab xuab zeb yog txau. , Tom qab paving kub asphalt sib tov, nws yog dov kom tau raws li qhov yuav tsum tau ua. Lub sijhawm tsim kho tag nrho tsuas yog 78d, nrog kev ua haujlwm siab thiab zoo.
