Magawo omwe amakumana nawo pakupanga njira yodzitetezera ku micro-surfacing
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Magawo omwe amakumana nawo pakupanga njira yodzitetezera ku micro-surfacing
Nthawi Yotulutsa:2024-05-11
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M'zaka zaposachedwa, micro-surfacing yakhala ikugwiritsidwa ntchito kwambiri ngati njira yodzitetezera. Kukula kwaukadaulo wa micro-surfacing wadutsa pafupifupi magawo otsatirawa mpaka lero.
Gawo loyamba: slurry chisindikizo chapang'onopang'ono komanso pang'onopang'ono. M'kati mwa Mapulani a Zaka zisanu ndi zitatu zazaka zisanu, luso la phula la emulsifier lopangidwa m'dziko langa silinali loyenera, ndipo zopangira pang'onopang'ono zochokera ku lignin amine zinkagwiritsidwa ntchito makamaka. Emulsified asphalt yomwe imapangidwa ndi mtundu wa emulsified asphalt, womwe umapangidwira pang'onopang'ono komanso pang'onopang'ono, choncho zimatenga nthawi yaitali kuti mutsegule magalimoto pambuyo poika chisindikizo cha slurry, ndipo zotsatira zomanga pambuyo pake zimakhala zovuta kwambiri. Gawo ili ndi pafupifupi kuyambira 1985 mpaka 1993.
Gawo lachiwiri: Ndi kafukufuku wosalekeza wa mayunivesite akuluakulu ndi mabungwe ofufuza zasayansi mumsewu waukulu, magwiridwe antchito a emulsifiers apita patsogolo, ndipo kusweka kwapang'onopang'ono ndikuyika mwachangu ma emulsifiers a asphalt ayamba kuwonekera, makamaka anionic sulfonate emulsifiers. Imatchedwa: pang'onopang'ono akulimbana ndi kusala kudya slurry chisindikizo. Nthawiyi imachokera ku 1994 mpaka 1998.
Magawo omwe amachitikira pakupanga njira yodzitetezera ku micro-surfacing_2Magawo omwe amachitikira pakupanga njira yodzitetezera ku micro-surfacing_2
Gawo lachitatu: Ngakhale kuti ntchito ya emulsifier yayenda bwino, chisindikizo cha slurry sichingakwaniritse mikhalidwe yosiyanasiyana ya misewu, ndipo zofunika zapamwamba zimayikidwa patsogolo kuti ziziwonetsa magwiridwe antchito a zotsalira za phula, kotero lingaliro la kusinthidwa slurry chisindikizo chinatulukira. Styrene-butadiene latex kapena chloroprene latex amawonjezeredwa ku phula lopangidwa ndi emulsified. Panthawiyi, palibe zofunikira zapamwamba za mineral materials. Gawoli limakhala kuyambira 1999 mpaka 2003.
Gawo lachinayi: kutuluka kwa micro-surfacing. Pambuyo pamakampani akunja monga AkzoNobel ndi Medvec adalowa mumsika waku China, zofunikira zawo pazakudya zamchere ndi phula lopangidwa ndi emulsified lomwe amagwiritsidwa ntchito mu chisindikizo cha slurry linali losiyana ndi la chisindikizo cha slurry. Komanso amaika zofunika apamwamba pa kusankha zipangizo. Basalt imasankhidwa ngati mchere, zofunikira zofanana ndi mchenga, phula losinthidwa emulsified ndi zina zimatchedwa micro-surfacing. Nthawi ndi kuyambira 2004 mpaka pano.
M'zaka zaposachedwa, phokoso lochepetsera phokoso la micro-surfacing likuwoneka kuti lithetse vuto la phokoso la micro-surfacing, koma kugwiritsa ntchito sikuli kochuluka ndipo zotsatira zake ndi zosasangalatsa. Pofuna kupititsa patsogolo kakomedwe ndi kukameta ubweya wa osakaniza, fiber micro-surfacing yawonekera; kuti athetse vuto la kuchepa kwa mafuta a msewu wapachiyambi ndi kumamatira pakati pa kusakaniza ndi msewu wapachiyambi, mawonekedwe a viscosity-wowonjezera fiber micro-surfacing anabadwa.
Pofika kumapeto kwa 2020, misewu yayikulu yomwe ikugwira ntchito m'dziko lonselo idafika ma kilomita 5.1981 miliyoni, pomwe ma kilomita 161,000 anali otsegukira magalimoto pamsewu. Pali njira zisanu zodzitetezera zomwe zilipo panjira ya phula:
1. Ndi makina otsekera chifunga: wosanjikiza wotsekera chifunga, wosanjikiza mchenga, ndi mchenga wokhala ndi chifunga;
2. Njira yosindikizira miyala: emulsified asphalt miyala yosindikiza wosanjikiza, phula lotentha la phula losindikizidwa, phula losindikizidwa la phula, mphira wa mphira wa phula losindikizidwa, wosanjikiza wosindikiza wa fiber, pamwamba woyengedwa;
3. Dongosolo losindikizira la slurry: kusindikiza kwa slurry, kusindikiza kusinthidwa kwa slurry;
4. Micro-surfacing system: micro-surfacing, fiber micro-surfacing, ndi viscose fiber micro-surfacing;
5. Hot atagona dongosolo: woonda wosanjikiza chivundikiro, NovaChip kopitilira muyeso-woonda kuvala wosanjikiza.
Pakati pawo, micro-surfacing imagwiritsidwa ntchito kwambiri. Ubwino wake ndikuti sikuti uli ndi ndalama zochepa zokonza, komanso zimakhala ndi nthawi yochepa yomanga komanso zotsatira zabwino za mankhwala. Ikhoza kupititsa patsogolo machitidwe odana ndi skid mumsewu, kuteteza madzi kusungunuka, kusintha maonekedwe ndi kusalala kwa msewu, ndi kuonjezera mphamvu yonyamula katundu pamsewu. Ili ndi zabwino zambiri zopewera kukalamba kwa msewu komanso kukulitsa moyo wautumiki wapanjira. Njira yokonza imeneyi imagwiritsidwa ntchito kwambiri m’mayiko otukuka monga ku Ulaya ndi ku United States komanso ku China.