Asphalt Inobuda Muchirimwa Inopisa Zvakadini uye Nei Vashandi Vekugadzira Paving Vachifanira Kutarisira?

Saka, Asphalt Inobuda Muchirimwa Inopisa Zvakadini?

Kana wakambomira pedyo nerori itsva, unenge watoziva mhinduro yacho mupfungwa dzako: kupisa . Asi "kupisa" hachisi chinhu chaunogona kuisa patikiti. Nhamba dzacho dzinokosha. Asphalt inosanganiswa nekupisa (HMA) inosiya muchina wekusanganisa madhiramu pa280–330 °F (138–166 °C) . Hwindo iroro harisi remhando yepamusoro; inzvimbo yakanaka apo chibatiso chacho chinonamira zvakakwana kuti chifukidze dombo rega rega asi chine mvura yakakwana kuti musanganiswa ushande zvakanaka pakudhonza, pakugadzika, uye pakumanikidzana. Dzikira pasi pe260 °F uye unogona kuisa musanganiswa wakapfava; kukwira pamusoro pe340 °F uye asphalt inotanga kuoxida nekukurumidza—mugwagwa wako mutsva unogara kwemakore mumaminitsi.

Chii Chinodzora Tembiricha Inobva Mumhepo?

Zvishandiso zvitatu zvinosarudza kuverenga kwetikiti remota: hunyoro hwese, huwandu hwebinder, uye nguva yekuchengetera silo . Matombo akanyorova anoita sechipanji, achiba maBTU kubva mumoto weburner. Mumwe mushandi wefekitori muNorth Carolina akambondiudza kuti, "Hunyoro hwese hunotitorera 14 °F pagedhi." Panguva iyi, PG 76-22 polymer-modified binder inoda kupisa kwakawedzerwa kuti ibude, asi haugone kungokanda burner nekuti rabha inopisa zvakanyanya inogona kupatsanurana. Pakupedzisira, musanganiswa haugone kugara musilo kwenguva yakareba; mushure memaawa mana inodonha inenge 5 °F paawa kunyangwe mumabhini ane insulated. Wedzera izvi zvinhu pamwe chete uye uchaona kuti nei lab yefekitori ichichengeta laser thermometer yakanongedzera kubhandi sekunge iri space launch.

Sei Kutasva Rori Kusingatonhodzi Mix Nokukurumidza Sezvaunofunga

Vatyairi vanopika kuti mutoro "unorasikirwa nemadhigirii makumi mashanu pakutyaira kwemaminitsi makumi maviri," asi ma thermocouple probes anoratidza nyaya yakasiyana. Kurasikirwa nekupisa kunodzorwa nenzvimbo yepamusoro, kwete vhoriyamu . Dump rematani makumi maviri nemaviri rakaita sechingwa rine 8% chete yehuremu hwaro hwakaiswa mumhepo. Mibhedha yakadzivirirwa uye matende akaderedzwa kuderedzwa kwechiedza nemamwe 30%. Ruzivo rwechokwadi kubva kuFHWA's Mobile Asphalt Pavement Monitor (MAPM) runoratidza kudonha kweavhareji ye7–12 °F mumaminitsi makumi matatu ekutanga - zvichiri mukati mezvinodiwa zveDOT dzakawanda dzedunhu. Chidzidzo? Usapomera daro rekufamba nekuda kwemajoini anotonhora; pomera hunhu husina kunaka hwetarp kana kutamiswa kusina kufukidzwa.

Mutengo Wakavanzika Wekumhanya Wakanyanya Kutonhorera

Kana musanganiswa wacho wasvika pasi pe275°F, makambani anotarisana nemusoro wakawanda:

• Kuwanda kwemajoini kwakaderera — mipendero inotonhora hairukwi, zvichiita kuti mvura ipinde pasi pemachira.
• Nguva pfupi yekutenderera — unenge uine mapasi matanhatu usati wanyura pasi pe175°F, chiyero chidiki chekugadzirisa zvinobudirira.
• Kutsemuka mune ramangwana — kudonha kwega kwega kwe1% mumhepo inobuda pamusoro pe8% kunogona kuderedza nehafu yenguva yekuneta, zvichienderana neongororo yeNCAT.

MuchiShona chakajeka, "kuchengetedza mafuta" pafekitori kunogona kudhura zvakapetwa kagumi kana kugadziriswa nguva isati yakwana. Imwe ongororo yeDOT yakati mutengo wekuparadzanisa tembiricha yakaderera pamadhora mamiriyoni maviri nehafu ($2.8 miriyoni pakiromita imwe neimwe yemugwagwa mukati memakore gumi nemashanu ehupenyu hwese.

Maitiro Ekuchengetedza Kupisa Kwaunoda

Nerombo rakanaka, hausi kuomerwa nekuyambuka minwe yako. Heano maitiro mana akaedzwa mumunda:

1. Makamera ekupisa ari paPaver

Isa FLIR A700 pamusoro pe auger uye uchaona mavara aripo panguva chaiyo. 20 °F differential iri pamusoro pe screed ndiyo chiratidzo chekuti kupatsanurwa kuri kuitika pamberi pemaziso ako. Vashandi vanogona kugadzirisa maburi emagedhi kana kugadzira remix nekukurumidza pane kungoona kuti aripo mushure memakiromita mashoma.

2. Zvimwe Zvinodziya-Musanganiswa Hazvisi ZveGreen Points Chete

Zvinhu zvinotumbuka seSasobit zvinodzikisa hurefu hwebasa ne30–40 °F pasina kukanganisa kuomarara. Izvi zvinoreva kuti unogona kudhonza mugwagwa kure kana kugadzira mugwagwa kwemazuva 50 °F uchiri kusimba. Bhonasi: utsi hushoma hwebhuruu pafekitori, zvichiita kuti vavakidzani (nevatongi) vafare.

3. Mibhedha yeLori Inodziya—Hongu, Inozvibhadhara Yoga

Grid yepropane pasi pemubhedha inowedzera 18 lbs pahuremu hwetire asi inochengetedza mutoro pamusoro pe290 °F kwemamwe maminitsi 45. Pamadhora $0.40 pakupisa, izvo zvinodhura pasi pemadhora mana parori imwe chete kutenga imwe hafu yeawa yekugona kugadzikana. Pashifiti yehusiku yemaguta inorema matani zviuru gumi, masvomhu akaenzana nemadhora $0.12 patani - yakachipa pane tani yechirango chekuisa pamusoro.

4. Kugovana Data Munguva Yechokwadi

Mafekitori emazuva ano anogona kupinza kuverenga kwetembiricha zvakananga kuapp inogovaniswa nemaneja wekutonga mhando, mushandi wepaver, uye foreman weroller. Kana tembiricha yemusanganiswa yadzikira pasi pespec, zviziviso zvekusundidzira zvinoita kuti kuongororwa kwehuwandu hwevanhu kuonekwe nekukurumidza. Imwe dunhu reWisconsin yakaderedza huwandu hwayo hweremill kubva pa4.2% kusvika pa0.9% mumwaka mumwe chete ichishandisa iyi workflow.

Asi Hotter Mix hairevi here kuti pane zvakawanda zvinoburitsa utsi?

Mubvunzo wakanaka. AP-42 modhi yeEPA inoratidza kuti kukwira kwega kwega kwe10 °F kunoburitsa CO₂ yakawanda ne2% pa stack. Asi ongororo yehupenyu hweindasitiri inoratidza kuti huwandu huri nani munzvimbo inobvisa utsi uhwo nekuwedzera hupenyu hwemugwagwa. Muchidimbu, kukwira kwe3% muCO₂ yezvirimwa kunogona kudzivirira kudzokororwa kwe30% gare gare. Net-net, kabhoni ledger haina kunaka - hapana kukuya, kukweva, uye kudziyisazve kwemakumi emakore. Uyezve, matekinoroji anodziya anogona kuderedza tembiricha yekupisa ne35 °F uku achichengetedza kuyerera, achicheka NOx neCO₂ kamwe chete.

Rondedzero Yekukurumidza yeVanyori veSpec

Kana uri kugadzirisa dhairekitori reDOT, funga nezvemabhurawuti aya:

• Zvinoda kutariswa kwekupisa kwe infrared nguva dzose pa paver mat.
• Isa tembiricha yekutumira ye275 °F yemisanganiswa ye9.5 mm, 285 °F yehwaro hwe19 mm.
• Rega musanganiswa unodziya udzike kusvika ku240 °F kana huwandu hwemacores hwakasimbiswa ne96% theoretical max.
• Kuchengetera silo yekuvhara kwemaawa matatu kunze kwekunge pashandiswa blanket ine gasi isina simba.

Uye, hapana munhu ane nguva yekufamba netsoka kana mota dziri mumitsetse yemakiromita akawanda.

Mutsetse Wekupedzisira

Kuziva kuti asphalt inopisa sei kubva mufekitori haisi nyaya yekutamba nayo—ndiyo nzira inochengetedza huwandu hwemvura, mhando yemotokari, uye, pakupedzisira, kukosha kwemutero. Sarudza tembiricha yakakodzera, ichengetedze segoroko panguva yekutakura, uye nzira yako ichararama kupfuura vezvematongerwo enyika vakaitsigira.