Isitshalo Se-Asphalt se-TTM - Umkhiqizi Wemishini Yokuxuba Nokuvuselela I-Asphalt Ochwepheshe Kusukela ngo-2004.
Ishisa Kangakanani I-Asphalt Evela Esitshalweni Futhi Kungani Amaqembu Okugandaya Imigwaqo Kufanele Akhathalele?
Iqiniso Eliphula I-Thermometer: Ishisa Kangakanani I-Asphalt Evela Esitshalweni?
Uma wake wema amayadi ambalwa ukusuka esitshalweni sokuxuba izigubhu ezibhongayo ntambama yasehlobo, usuvele uyazi ukuthi impendulo ithi “ kushisa kakhulu kunalokho ocabanga .” Iningi lemininingwane ye-DOT yesifundazwe idinga amazinga okushisa okuxuba aphakathi kuka-275 °F no-325 °F (135 °C–163 °C) endaweni yokulayisha. NgesiNgisi esilula, lokho kushisa ngokwanele ukuthosa i-steak ephakathi nendawo engavamile ngaphansi kwemizuzwana engama-30. Futhi yebo, ukufundile kahle lokho—275 °F yinani eliphansi , hhayi inani eliphezulu.
Kungani Umkhumbi Wezitshalo Uxuba Kanjalo, Noma kunjalo?
Usimende we-asphalt (inhlaka emnyama ebamba amatshe ndawonye) unokuqina okufana nama-molasses abandayo ekushiseni kwegumbi. Ukuze umboze wonke amatshe nesihlabathi, i-binder kumele ibe noketshezi. Ukushisa kunciphisa i-viscosity ngokushesha: njalo uma kunyuka ama-25 °F, i-binder iba cishe kabili kunaleyo egelezayo . Ngakho-ke isitshalo sicindezela imvilophu ukuqinisekisa ukumbozwa okuphelele, ikakhulukazi kuma-aggregates anezimbobo aphuza uketshezi. Iphuzu elibalulekile: uma ingxube ishisa kakhulu, ukumbozwa kungcono, futhi uma umgwaqo uqina kakhulu.
Kwenzekani Uma Umthwalo Uphola Ngaphambi Kokuthi Ufike Emsebenzini?
Uma iloli seliphumile esangweni, ukulahleka kokushisa kuyaqala. Ucwaningo oluvela kwi-National Asphalt Pavement Association (NAPA) lubonisa ukwehla okungu-5–7 °F ngemayela ngosuku oluzungezile olungama-60 °F. Engeza umoya, ukudonsa isikhathi eside, noma ukugandaya ebusuku bese i-delta ikhula. Uma umata ufika ngaphansi cishe240 °F (116 °C) , ukuqina kuba yiphupho elibi. Ama-roller awasakwazi ukuvala izikhala zomoya, futhi ingxube iyaqina, okuholela ekuqhekekeni nasekuqhumeni ngaphambi kwesikhathi. Ukuhumusha : indawo yakho yokupaka entsha ingabukeka ineminyaka eyishumi ubudala ezinyangeni eziyisithupha.
Indlela Yokugcina Ukushisa Kusendaweni Okufanele Kube Kuyo—Ngaphakathi Komthwalo
- Faka ithayela elolini . Ithayela elilula le-vinyl linciphisa ukulahleka kokushisa ngamaphesenti afinyelela ku-35 uma uthutha ngaphansi kwamamayela angu-20.
- Sebenzisa imibhede evalekile . Imibhede embozwe nge-aluminium igcina amazinga okushisa aphezulu okukhishwa komoya angu-15–20 °F uma kuqhathaniswa nensimbi ejwayelekile.
- Isikhathi sokuthulula . Hlela ukulethwa ukuze i-paver ingayeki; ikhanda le-paver elihamba njalo ligcina ukuhlukaniswa kokushisa kuvaliwe.
Icebiso lochwepheshe:
Ungathululi ngezigaba . Ukulahla ingxenye yomthwalo, ulinde imizuzu eyishumi, bese ulahla okusele kudala umongo obandayo ongenakulungiseka yi-roller.
Amehlo Edijithali: Izinzwa Ze-Infrared Yonke Indawo
Izitshalo zanamuhla manje zibeka amakhamera e-infrared ngaphezu kwe-loading hopper. Lawa magajethi alinganisa yonke indawo yeloli ngalinye ngesikhathi sangempela, emaka imithwalo ewela ngaphansi kwe-spec. Idatha ilayishwa ngokuzenzakalelayo kumadeshibhodi efu, ngakho abahloli be-DOT kanye nabaphathi bemigwaqo bangayenqaba inqwaba epholile ngaphambi kokuba ifike emgwaqweni.
Ingabe Izinga Lokushisa Eliphakathi Liyayishintsha Indawo Yokubeka Isitshalo?
Impela. Ekuseni kwentwasahlobo okushisayo okungu-40°F, umqhubi wesitshalo angase ashaye ithagethi aye kuyo.330 °F ukuze kulungiswe imigwaqo yokuthutha ebandayo. Ngakolunye uhlangothi, ntambama kaJulayi engu-95 °F, indawo yokubeka ingase ibuyele emuva290 °F ukuvimbela ukuchitheka kwamanzi kwe-binder. Cabanga ngakho njengokushisa ihhavini yakho kusengaphambili: ulungisa i-dial ngokusekelwe kulokho okuphekwa ngaphandle.
Ungakwazi Yini Ukushisa Ingxube Ngokweqile?
Ngempela. Cindezela ingxube idlule350 °F (177 °C) futhi usimende we-asphalt uqala ukubola ngokushesha. I-binder iphenduka ibe buthakathaka, kanti intuthu eluhlaza okwesibhakabhaka oyibonayo empeleni ivutha uwoyela okhanyayo . Lokhu akugcini nje ngokudala ubuhlungu bemvelo, kodwa futhi kushiya umgwaqo usengozini yokuqhekeka kokushisa ebusika bokuqala. Ngamafuphi, ukushisa kungcono—kuze kube yilapho kungasebenzi.
Isimo Sangempela: Uhambo Olungamamayela Angama-20 e-Arizona
Ake sihlaziye izinombolo. Izinga lokushisa lesango lesitshalo: 315 °F. Indawo: 105 °F. Ibanga lokudonsa: amamayela angu-20 ngesivinini esingu-55 mph. Sisebenzisa imodeli yokupholisa ye-NAPA, ingxube ifika ku285 °F —kusasesengaphakathi kwefasitela lokuqina. Kodwa engeza umoya ovunguzayo ongama-15 mph bese izinga lokushisa lokufika lehla liye ku270 °F Manje i-breakdown roller inemizuzu eyisishiyagalombili kuphela yokufinyelela ku-92% density ngaphambi kokuba i-mat yehle ngaphansi kuka-240 °F. Uma uphuthelwa yilelo fasitela bese ulandela izithunzi.
I-Money Shot: Ibiza Malini i-Cool Mix?
Umthwalo owodwa wamathani angu-20 ofika ngaphansi kwesilinganiso ungabiza umakhi:
| Into | Izindleko |
|---|---|
| Ukususwa nokufakwa esikhundleni | $1,200 |
| Ukugaya kanye nokumboza | $800 |
| Izijeziso ze-DOT | $500 |
| Ukuchayeka okuphelele | $2,500 ngeloli ngayinye |
Phindaphinda lokho ngamaloli ayishumi ngosuku bese ubheka u-$25,000 wokulungiswa kabusha ngaphambi kwesidlo sasemini. Ngokungazelelwe, lokho kuthuthukiswa kwekhamera ye-infrared engu-$300 kuzwakala sengathi kushintshiwe.
Okubalulekile Kwamaqembu Okugawula Imigwaqo
Khumbula, izinga lokushisa liyinhloso ehambayo . Qapha izindawo zokubeka izitshalo, ibanga lokuthutha, isivinini somoya, kanye nokushisa kwe-ambient ngesikhathi sangempela. Phatha wonke umthwalo njengokulethwa kwe-pizza eshisayo: lapho ifika ngokushesha futhi ishisa kakhulu kumakhasimende, kulapho wonke umuntu ejabula khona.
