Iindaba

1, Yeyiphi imisebenzi yeentlobo ezahlukeneyo ze-geogrids
Njengezinto eziqhelekileyo ezisetyenziselwa ukwakhiwa kweendlela, ii-geogrids zidlala indima ebalulekileyo ekwakhiweni kwendlela.Ngelo xesha, i-geogrids nayo yahlulahlulwe kwiindidi ezahlukeneyo.Namhlanje siza kwazisa indima yeentlobo ezahlukeneyo ze-geogrids.
Kukho iintlobo ezine zeegeogrids.Masibazise:
1. Umsebenzi we-geogrid yeplastiki ye-unidirectional:
I-Uniaxial tensile geogrid yimathiriyeli eyomelele kakhulu ye-geosynthetic.Isetyenziswa ngokubanzi kwi-embankment, itonela, i-wharf, uhola wendlela, uloliwe, ukwakhiwa kunye namanye amasimi.Ukusetyenziswa kwayo okuphambili ngolu hlobo lulandelayo: ukuqinisa i-subgrade, ukusabalalisa ngokufanelekileyo umthwalo wokusabalalisa, ukuphucula ukuzinza kunye nokuthwala umthamo we-subgrade, kunye nokwandisa ubomi benkonzo.Inokumelana nomthwalo omkhulu otshintshanayo.Ukuthintela ukuguqulwa komgangatho ophantsi kunye nokuqhekeka okubangelwa ukulahlekelwa kwezinto eziphantsi.Inokuphucula amandla okuzithwala okuzaliswa emva kodonga olugciniweyo, ukunciphisa uxinzelelo lomhlaba kwindonga yokugcina, ukugcina iindleko, ukwandisa ubomi benkonzo, kunye nokunciphisa iindleko zokugcina.Idityaniswe ne-shotcrete kunye nendlela yokwakha ikhonkrithi ye-anchor, ukugcinwa kwe-slope akukwazi nje ukusindisa i-30% - 50% yotyalo-mali, kodwa kunciphise ixesha lokwakha ngokuphindwe kabini.Ukongeza i-geogrids kwi-subgrade kunye ne-surface layer yohola wendlela kunokunciphisa ukuphambuka, ukunciphisa i-rutting, ukulibazisa ixesha lokwenzeka kwe-crack ngamaxesha angama-3-9, kunye nokunciphisa ubukhulu bomgangatho wesakhiwo ngama-36%.Isebenza kuzo zonke iintlobo zomhlaba, ngaphandle kwesidingo semathiriyeli evela kwezinye iindawo, kwaye yonga umsebenzi kunye nexesha.Ulwakhiwo lulula kwaye lukhawuleza, olunokunciphisa kakhulu iindleko zokwakha.Ukongezwa okudibeneyo kwe-geogrid, ukuqinisekiswa komgangatho.

2. Indima ye-geogrid yeplastiki yeendlela ezimbini:
Ukwandisa umthamo wokuthwala wesiseko sendlela (yomhlaba) kunye nokwandisa ubomi benkonzo yesiseko sendlela (yomhlaba).Thintela ukudilika okanye ukuqhekeka kwendlela (umhlaba) umphezulu kwaye ugcine umhlaba mhle kwaye ucocekile.Ulwakhiwo olulula, ukonga ixesha, ukonga umsebenzi, nciphisa ixesha lokwakha nokunciphisa iindleko zokulondoloza.Thintela ikholvethi ekuqhekekeni.Yomeleza ukuthambeka komhlaba kwaye uthintele ukulahleka kwamanzi kunye nomhlaba.Ukunciphisa ubukhulu be-cushion kwaye ugcine iindleko.Xhasa uhlaza oluzinzileyo lwemethi yokutyala ingca kwithambeka.Inokuthi ithathe indawo yemesh yesinyithi kwaye isetyenziselwe i-mesh yophahla lobuxoki kumgodi wamalahle.
3. Indima ye-geogrid yentsimbi-yeplastiki:
Isetyenziswa ikakhulu kumasimi okuqinisa isiseko somhlaba othambileyo, udonga olugcinayo kunye nobunjineli bokumelana nokuqhekeka kweendlela zoohola bendlela, oololiwe, ii-abutments, iindlela, iiwharves, ukubuyiselwa, amadama, iiyadi ze-slag, njl.
4. Umsebenzi wegilasi fiber geogrid:
I-asphalt yekhonkrithi endala iqiniswa ukuqinisa umgangatho we-asphalt kunye nokukhusela izifo.Ipavumente yesamente yesamente yakhiwa ngokutsha ibe yipavumente edibeneyo ukuthintela iintanda ezibonakeleyo ezibangelwa kukushwabana kweepleyiti.Ukwandiswa kweendlela kunye nemisebenzi yokwakhiwa kwakhona, ukuthintela iintanda ezibangelwa yi-junction entsha kunye endala kunye nokuhlaliswa okungalinganiyo.Ukuqiniswa kwonyango lwesiseko somhlaba othambileyo kuhambelana nokwahlulwa kwamanzi kunye nokuqiniswa komhlaba othambileyo, ukuthintela ngokufanelekileyo ukuhlaliswa, ukusabalalisa okufanayo koxinzelelo, kunye nokuphucula amandla apheleleyo e-subgrade.Isiseko se-semi-rigid sendlela entsha sivelisa ukuqhekeka kwe-shrinkage, kwaye ukuqiniswa kusetyenziselwa ukuthintela ukuchithwa kwe-pavement okubangelwa ukubonakaliswa kokuqhekeka kwesiseko.

I-2, ilungile kangakanani i-anti-fatigue cracking performance ye-geogrid
I-Geogrid isebenzisa ifayibha yepolyester eyomelele kakhulu okanye i-polypropylene fiber njengento ekrwada, yamkele i-warp knitting structure, kwaye imisonto ejikajikayo neye-weft elaphuni ayinakugotywa, kwaye indlela yokuhlangana iyabotshwa kwaye idityaniswe nefilament yokuqina ephezulu ukwenza indawo eqinileyo yokubopha, enika umdlalo opheleleyo kwiimpawu zayo zomatshini.Ngaba uyazi ukuba kuhle kangakanani ukumelana nokudinwa kwayo?
Impembelelo ephambili ye-asphalt yokugqithisa kwi-pavement yekhonkrithi endala kukuphucula umsebenzi wokusetyenziswa kwe-pavement, kodwa inegalelo elincinane kwimpembelelo yokuthwala.Ipavumente eqinileyo yesamente phantsi kwesigqubuthelo isadlala isiphumo esibalulekileyo.Ukwaleka kwe-asphalt kwipavumente endala yekhonkrithi yahlukile.Isigqubuthelo se-asphalt siya kuthwala umthwalo kunye nepavumente endala yekhonkrithi.Ngako oko, ukugqithiswa kwe-asphalt kwi-pavement yekhonkrithi ye-asphalt ayiyi kubonisa kuphela ukuchithwa kwe-reflection, kodwa kubonisa ukuchithwa kokukhathala ngenxa yempembelelo yexesha elide lomthwalo.Makhe sihlalutye imeko yokulayishwa kwe-asphalt yokugqithisa kwi-asphalt ye-concrete ye-pavement endala: ngenxa yokuba i-asphalt yokugqithisa i-flexible surface layer enepropathi efanayo kunye ne-asphalt overlay, xa iphantsi komthwalo womthwalo, i-pavement iya kuba ne-deflection.Ukwaleka kwe-asphalt echukumisa ngokuthe ngqo ivili iphantsi koxinzelelo, kwaye umphezulu uphantsi kwamandla okuqina kwindawo engaphandle komda womthwalo wevili.Ngenxa yokuba iipropathi zamandla eendawo ezimbini zoxinzelelo zihlukile kwaye zisondelelene, kulula ukonakalisa ekudibaneni kweendawo ezimbini zoxinzelelo, oko kukuthi utshintsho lwamandla ngokukhawuleza.Ngaphantsi komphumo womthwalo wexesha elide, ukuchithwa kokukhathala kwenzeka.
I-Geogrid inokusasaza olu xinzelelo loxinzelelo lungentla kunye noxinzelelo lwe-tensile kwi-asphalt engaphezulu ukuze yenze indawo ye-buffer phakathi kweendawo ezimbini zoxinzelelo, apho uxinzelelo luguquka ngokuthe ngcembe kunokuba ngequbuliso, lunciphise umonakalo woxinzelelo oluguquguqukayo ngequbuliso kwi-asphalt yalekanye.Ubude obuphantsi be-glass fibre geogrid kunciphisa ukuphambuka kwendlela yokuhamba kwaye iqinisekisa ukuba i-pavement ayiyi kuba ne-deformation yenguqu.
I-geogrid ye-unidirectional ikhutshelwa kwiishiti ezibhityileyo nge-polymer (ipolypropylene PP okanye i-polyethylene HDPE), emva koko ibethelwe kuthungelwano lomngxuma oqhelekileyo, kwaye emva koko yolulwe ngobude.Kule nkqubo, i-polymer ikwimeko yomgca, yenza ulwakhiwo olude lwe-elliptical network kunye nokusabalalisa okufanayo kunye namandla aphezulu e-node.
Igridi ye-unidirectional luhlobo lwezinto eziphezulu ze-geosynthetic, ezinokuthi zihlulwe zibe yigridi ye-polypropylene ye-unidirectional kunye negridi ye-polyethylene unidirectional.
I-Uniaxial tensile geogrid luhlobo lwe-geotextile yokuqina okuphezulu kunye ne-polymer ephezulu yemolekyuli njengeyona nto iphambili yemathiriyeli ekrwada, eyongezwe kunye ne-anti ultraviolet kunye ne-anti-aging agents.Emva koxinzelelo lwe-uniaxial, iimolekyuli zokuqala ezisasaziweyo ziphinda zilungelelaniswe kwimeko yomgca, kwaye emva koko zikhutshelwe kwipleyiti encinci, ichaphazele umnatha oqhelekileyo, kwaye zolulwe ngokobude.Inzululwazi yezinto eziphathekayo.
Kule nkqubo, i-polymer ikhokelwa yi-linear state, yenza i-elliptical network structure kunye nokusabalalisa okufanayo kunye namandla aphezulu e-node.Esi sakhiwo sinamandla aphezulu kakhulu kunye nemodyuli yokuqina.Amandla e-tensile yi-100-200Mpa, esondele kwinqanaba le-carbon steel ephantsi, kwaye ingcono kakhulu kunezinto eziqhelekileyo okanye ezikhoyo zokuqinisa.
Ngokukodwa, le mveliso inezinga eliphezulu kakhulu lasekuqaleni lamazwe ngamazwe (ubude be-2% - 5%) amandla okuqina kunye nemodyuli yokuqina.Ibonelela ngenkqubo efanelekileyo yokuzinikela komhlaba kunye nokusabalalisa.Le mveliso inamandla aphezulu okuqina (>150Mpa) kwaye ilungele zonke iintlobo zomhlaba.Yimathiriyeli esetyenziswa ngokubanzi ngoku.Iimpawu zayo eziphambili zinamandla aphezulu, ukusebenza kakuhle kwe-creep, ukwakhiwa okufanelekileyo kunye nexabiso eliphantsi.