Ukuthi Ukuphatha Kwesilinga Kuhlelwa Kanjani Kukhupha Ibhodi Yehlathi Nokulondoloza

Ingeni Eshintsha: Kanjani Ukwehla kwezindawo engenazo izimu Ethinca Ubude Bomoto Obuhle

Ukulungiswa Okuphathelene NeSithunywa Esifanayo SeConcret

Indlela yokuweba okuqhubekayo yokulayisha kusenela izihlangothi ezihlelane ngokuphelele ngoba kukhona izikhungo ezifakwe khona ezilondoloza izinguquko zomphakathi nezimbobo njengoko sisebenza. Esikhundleni sezinkumbulo ezidala, izimo ezintsha zisebenzisa GPS nezinhliziyo ukuze zilondoloze ubuncane besibonakaliso xa kulayishwa ikhonkreti. Lokhu kusho ukuthi akudingeki ukulungisa ngendlela eyisisekelo futhi umlando wunye ungalahlekelwa ubude obufanele, okubaluleke kakhulu kahle kubekeka ngokuphi umthwalo uphinde phezu kwendlela. Abasebenzi banelisebenzisa ikhonkreti enezixwayiso ephantsi ngokulinganiselana okungekho mpunga, baphathelene ngokulinganiselana phambi komkhawulo abalayishayo. Izinhlelo zokuvibrata zangena zisebenza ngokudla ngokuphelele, ziyagcina ukuthi akukhona amabhobho okomoya noma izindawo eziphazanyayo ezakha. Kulinganiswa nokusebenzisa izindlela ezithile ezigcinwe, le ndlela isusa iingxaki zokwahlulwa kwemithwalo ngamaphakade amathathu kanye nobuhlame ngokuphelele kwezizinda eziphazanyayo phakathi kwezinye izigaba. Okutholakele kuyizihlalo ezivimba ezingahlali zihlaza ngokungalingani. Izindlela ezidlalwayo ngale ndlela zidinga ukulungiswa kancane futhi zinikeza izimiso eziphilayo kubo bonke abasebenzisa, ikakhulukazi kuzindawo zomjondolo apho izilingo zomjondolo ziqhubeka zakhula.

Ukukhokha Ukuzinzileyo (IRI) nokudala Kwalomthombo kuSlipform Paving

Indlela esilinga ngayo ububi bokuvula kusebenzisa okuthiwa yintonga ye-International Roughness Index (IRI). Kabanzi, ngaphansi kokuba kukhona le nombolo, kube lula ukuphuma kwamakhina. Izinhlelo zokudonsa izinkulungwane zihlaziya IRI ngezantsi kumitha 1.5 ngakilomitha. Lokhu kuyagcwele kakhulu kunokuthinta iBhureyu Lomphathi Womphathi Wase-US. Ngani? Ngoba lezi zinhlelo zinezikhungo eziphathelene kakhulu futhi zingasimama izinkinga ngemva njengazoqhubeka. Ngenkathi, izinhlelo ezithile zokudonsa zenza lezi zigaba encwadini yokuvula. Zisebenzisa iziqhamo eziphendukayo noma amathambo okugunyaza. Isiphumo? Izindlu ezingavaleki kahle, nezincazelo zokugunyaza ziyaphezulu kune-0.45, futhi ukuphuma kwenyuka kubandakanya izwi lezinja elibuyekezela ngama-3 kuze kube ngu-5 amadebele. Siqiniseka ukuthi ubude bezigaba buhlala phakathi komitha 0.5 wokuphindaphinda kuze kube ngu-1.5. Le ndawo ikhondla ukuthi amanzi asuswe phansi kwamakhanda kodwa ikhondelela abasebenzisi ukuphuma kahle. Izivumelwano ezinezimali zisimama ngokushesha okuthi inkuni iphinde iphinde, ngakho ke wonke indawo inezigaba ezifanayo noma kuphela kude. Kunjalo futhi, kukhona isiphumo esijulile. Xa izindlu azikho izindawo zokudweba phakathi kwamabhodi, ziyahlala zilula kakhulu. Izidlalo zibonisa ukuthi lokhu kungakhiye izindlela zibe namandla amashumi alishumi ayisishiyagalombili kunazo ezinye izindlela ezigcinwe ngokusheshayo.

Ubunzima ngokudizaina: Ukugcogca, Ukulungisa, nokulungiselela kwamakhemikali ku- Ukwehla kwezindawo engenazo izimu

I-PCC engaphansi kwe-slump nokugcogca kusuku olusihambo ukuthembeka kwezobuchwepheshe ngokudala

Umsebenzi wa ukulayisha ngendlela eshiyekayo kusebenza kahle nabetone ye-Portland cement enobuchwepheshele obuncane bokulinganisa okuphakade kakhulu, okuvumela ukubutwa ngokushesha ngamathekwane atholakala kule ndlela njengoba kusebenziswa. Ukubutwa ngokushesha kukunika ubuchwepheshele obungaphezu kwemitha ethile kuze kube khona izinkinga zokuhluka kwezinto neziphathekayo ezingaphansi kakhulu kusukela emgangathweni. Le mininingwane ikuphatha izinkinga njengezinkomba zamazibuko namathambo amakhulu ayihlanjelwa hhayi. Xa isenzo siqhubeka ngokushesha emva kokulayishwa, sinesethulo esigcwele kusukela ekupheleni ekupheleni. Ukugcina ukulawula kangakanani kwezimali zokudlaya kanye nesimeni kwenza umfaniso ungafihliwe, okusho ukuthi izinkinga zezimali zomlambo zingafinyelela ngokushesha futhi izinkinga ezivamile zezimali zingasebenzi ngokushesha. Konke lokhu kusho ukuthi izindlu zezindlela ezidlalwayo ngale ndlela zilindela izikhathi ezimbili noma ngokuphindwe kabili ngokushesha kunazo ezenziwa ngendlela yokulayisha ngokuphakeme, kuyakha uhlelo olungcono kakhulu lomphakathi.

Ukukhupha nokungahlelekile kwezikhathi ezenziwa ngokudlulula ezindlini

Ukuzalisa ngokudlulisa kususa lezi zinkinga ezihambisana nezinkinga eziphakeme okungukuthi umphumela wokuthi izindawo zokuhamba kudinga ukulungiswa kangaka—ezingu-60% yonke into ekulungisweni ihambisa kulezi nkinga. Kanti na kususa izinkinga ze-joint zenkanye ngaproximately 40% ngoba ifuna njengempiyapi eyodwa esohlwini senhlangothi esahlukene. Xa amanzi akwazi ukungena ngaphakathi kwesimo sezindawo zokuhamba kakhangelwa, sibona ukuthi kukhula okuncane emva kweqondo elasekuqondini futhi amathambo afika phansi kunezinye. Le ndlela inemisebenzi yokulungiswa engaphakathi eyethulwa kuwo wonke umhla ukuqina, ngakho-ke akukho mlando wezinkinga ezivela kumlando wesilika. Futhi, izikhongo zilondoloza izinguquko zempilo ngemizuzu yonke futhi zilungisa izindawo ezinezinkinga apho izinto zimathula. Inhlotshwa yonke ichaza indiza ngaphandle kokudala izinkinga zomlando. Uma sibheka izinhlangano ezihamba ezilondolozwa ngu-FHWA ngama-bhiyu engu-5, bafunayo amathambo angu-50% okufanayo kunazo izindawo zokuhamba ezidolobheni ngendlela ebalulekileyo. Nakuba iyodwa le mpipi enye endaweni yezinye, isimo sizosindiswa kahle kumaqondo angenamandla, lokhu kusho ukuthi lezo zindawo zihamba kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku kusuku k......

Ukunciphisa Okungqindilili Kunye Nokugcwalisa Kukhona Kwakhona Kwe-Slipform Paving

I-Screeds, I-Floats, ne-Microtexturing Ukufumana I-Ride Quality Ekhona kuneSkid Resistance

Umsebenzi wesandla ongcinezayo osetshenziswa ku-slipform paving uwuthutha ngemini-imi3 kuya ku-1.5 kuya ku-3 ngomzuzwana, okungaba khona ukumelana nokuthintana okubi kakhulu kuyisebenta esisodwa ngezindlela ezithile zokwenza isivumelwano. Ngokwesiqephu saseFederal Highway Administration yangiveli 2023 esibheka izinhlangano ezahlukene, le ndlela ibambeza izindleko zokuphila ngama-40% kuphela ngonyaka 5 njengoba iyahlukanisa ubuqhubeka bezinkimbili ngempela kuleli gumbi. Emva kokuba konke kukhulunywa, kukhona izixhumanisi eziningi ezigcina ekutholeni iingcinga eziphilayo. Izibhamu zokuhlukumeza zihlenga iphrofayela, izibhamu ze-float zicima izihluko ezincane noma izinkinga, futhi izistimu ezithile zokwebala ngaphansi ziwucabanga amapropathi ethembekile eyenziwe ngcono ukuze akwazi ukubulala xa izindlu ziphelile. Lonke lo msebenzi wenza ngendlela ehlukile, ihamba phansi kwezimali ze-International Roughness Index ezingaphezu kuka-2.0 imitha ngakilomitha, futhi ihlanjelana nezidingo zonke zokuphila ezisetshenziswa yisebenta seFederal Highway Traffic Administration. Lokhu kusho ngempela kusidla kwezindlela ephila ngaphandle, kugcinwa kahle kubathengi, futhi kudalwa ngokushesha ngaphandle kokuchaza ubunzima.

Inani Lokuphila: Kungani Ukulayisha Ngendlela Yosindiso Kukhupha Okuncane Kokugcina Kwemali

Ukulayisha ngendlela yosindiso kungakhusa imali engaphezu kwezimo zokusebenza ngoba kunciphisa okufunekayo ekuseni kanye emva kwesikhathi xa kudingeka ukulungisa. Inkonya ichaza ngokushesha futhi. Kulinganiswa nendlela ephathelene nezindlela ezithile, ukulayisha ngendlela yosindiso kudinga abantu abangu-60 ku-70 iphesenti ngaphansi kwezindawo. Lokhu kuthola amahumusho amakhulu kumali wasebenza, okungekho mali yokuvikela ingu-$58 ngameter angqamuzana ngokwamaphuzu avela kwi-Federal Highway Administration. Amajelo futhi ayedwa ngokushesha kakhulu, njalo phakathi kwe-30 ku-50 iphesenti ngaphezu kwezinye izindlela. Ukugcina ngokushesha kuthola ukuthi kuncane isikhathi sokutholelwa kohlelo nokuncipha kokugcina kwisebe. Kulamajelo akhulu kwezinhlanzakazi, lo hlelo ofushane huveza ukuthola amahumusho emva kwezintathu ku-zinhlano, lokhu kubaluleke kakhulu uma ubuka izilinganiso ezihlelekile zamajelo wezimo.

Ifaktor yobukhulu kakhulu kuyakha izindlela zokunquma lezimali ngaphezu. Ngokwesibonelo sikaNAPA ngo-2023, izindiza ezakhiwe ngepaving ye-slipform zibonisa amathuba okungahloseki kangaka ngama-23% emva kweminyaka engu-5 yokusebenzisa. Kungani? Ngoba indlela iyakha isandla esizenzakalelayo kakhulu noma manje amajoin phakathi kwezilinganiso. Xa izindiza zilinda kude, zidinga ukulungiswa okuncane emva kwesikhathi. Izifundo zibonisa lokhu kungasusa kusukela ku-35 kuze kube ku-50% kuzimali ngemuva kweminyaka engu-20 uma kulinganwa nezindlela zokudlala eziphila. Uma bonke abafundi bavela njengekugcina - izikhathi ezinkululekileyo zokudala, izidingo ezingaphansi kwezimali zasebenzisa, nezinyangeni eziningi ngaphambi kokuthi ukulungiswa okukhulu kufaneleke - ipaving ye-slipform ibonakala njengachoice engcono yezimali kumadodana nemipolo ethuthelwa kuzimali ephinde zakhona ngaphandle kwebhajethi.

Imibuzo Evame Ukubuzwa

Yini ukwehla kwezindawo engenazo izimu ?
Ukupaka slipform kungumthetho wokupaka okusebenzisa indlela yokukhishwa ngcono endaweni yezikhungo ezigcwele, ukuvikela izihlangothi ezizodwa kakhulu nezibophezelo.

Kunjani ukupaka slipform kuthuthukisa ubomi bendlela?
Ukupaka slipform usebenzisa ibhloko engezansi engaphazanywa ngokushesha, ekulungisweni kwempahla futhi kuziphazanyiswa kwegazi, kanye nokukhokha izinkinga ezijwayelekile njengevinji kanye nembulungwane yesilika.

Kungani ukupaka slipform kungcono ngokusheshayo?
Ukupaka slipform kudinga amathuba amancane, abantu abancane, nezikhathi ezisheshayo zokudala, okuvikela izindleko zomsebenzi futhi kube khona isiphumo esisheshayo.

Ukupaka slipform kuyibangela kanjani ubume bomzimba?
Ukukhishwa ngcono kusula izibophezelo zeqedini, kuvikela izihlangothi ezizodwa kakhulu ezifana nezinye, ekuvikeleni umzimba ongcono futhi kuthula izinkulunkulu zezithuthi.

Ziziphi iimbenefiti zezenvironment eziphumelelayo kwi-paving yendiza?
Ukupaka slipform kususa kuqeda ukuhlakulwa kwegogo futhi kusula amandla esiSilika-Isilika, ekunikezeni izindlela ephinde iphila kude futhi zenzeke kancane.