Sidee ayay warshad isku darka ah ee Asphalt-ka Shiinaha ee dib-u-warshadaynta kulul u dhimaysaa kharashka iyo kaarboonka sanadka 2024?
Sababta Warshadaha Dhismaha Waddooyinka Caalamiga ah ay u Indha-indheynayaan Tiknoolajiyadda Dib-u-warshadaynta Kulul ee Shiinaha
Haddii aad dhawaanahan soo martay goob kasta oo kaabayaasha dhaqaalaha ah, waxaad u badan tahay inaad aragtay buuqa ku xeeran warshadda isku darka kulul ee asfalt-ka Shiinaha . Nidaamyadani waxay ballan qaadayaan inay ilaa 50% walxaha bikrada ah iyo bitumen ku beddeli doonaan laami la soo celiyay (RAP), iyagoo si weyn u dhimaya biilasha agabka. Laakiin ma sax baa, mise waa xeelad kale oo suuqgeyn "cagaaran" ah? Aan qodno xogta mashruuca dhabta ah halkii aan ka qodi lahayn buug-yaraha dhalaalaya.
Maxaa Dhab ahaan Ka Dhaca Gudaha Isku-darka Dib-u-warshadaynta Kulul?
Dhirta dhaqameedku waxay kululeeyaan walxaha bikrada ah ilaa 170-180 °C, ka dibna waxay ku dahaadhaan bitumen cusub. Isku-darka dib-u-warshadaynta kulul ee Shiinaha lagu sameeyay wuxuu ku daraa "durbaan qalajin RAP" dheeraad ah oo aad u kululeeya laamiga la shiiday ilaa 130 °C qol ay oksijiinku yaraysay. Tani waxay ka hortagtaa gabowga biraha iyadoo uumi-baxaysa qoyaanka. RAP-ka aadka u kulul ayaa markaa lagu qasi doonaa walxo bikrad ah oo aad u kulul, sidaa darteed heerkulka isku-darka kama dambaysta ah wuxuu ku sii jiraa qiyaastii 155 °C—15 °C ka hooseeya isku-darka caadiga ah. Heerkulka hoose wuxuu la mid yahay shidaal yar, qiiq yar, iyo deriska farxadda leh ee ku nool agagaarka geedka. Si fudud, ma hubtaa?
Qaybaha Muhiimka ah ee Sameeya Farqiga
- Weelasha qiyaasta RAP ee laba-baaran - meesha ka saar jajabyada waaweyn ee abuura dhibco qabow isku darka.
- Qallajinta socodka is barbar socda oo leh dareemayaal infra-red ah - sixitaanka qoyaanka waqtiga-dhabta ah gudahood ±0.2%.
- Ururinta boodhka saddexda marxaladood ah - duufaanta koowaad, bacaha lagu nadiifiyo, iyo mashiinka qoyan ayaa qiiqa PM ka dhigaya mid ka hooseeya 20 mg/m³, taasoo la jaanqaadaysa xitaa tilmaamaha California.
- Khadadka bitumen-ka ee saliidda kulul ku jira - ku hay heerkul ah 165 °C oo leh saxnaan ±2 °C, taasoo ka hortagaysa kala soocidda inta lagu jiro socodka dheer.
50% RAP ma u adkaysan karaa taraafikada culus?
Shakiga ayaa ka walaacsan in isku-darka sare ee RAP-ga uu dillaaco marka uu gaaro culeysyo culus. Daraasad ay samaysay Jaamacadda Chang'an sannadkii 2023 ayaa lagu raadraacay waddo weyn oo gobolka Shandong ah oo lagu dhisay 48% RAP oo ku jirta koorsada xirashada. Ka dib 14.2 milyan oo ESALs ah (culeys hal dhinac ah oo u dhigma), Tusmada Caalamiga ah ee Roughness ayaa kor u kacday oo keliya 0.8 mm/km, taasoo aad uga hooseysa kicinta dayactirka 2.0 mm/km. Falanqaynta mikroskoobka ayaa muujisay in xidhmada dib loo warshadeeyay ay leedahay modulus isku dhafan oo la mid ah (G*) marka loo eego bikrada PG 76-22, taas oo ay ugu wacan tahay dib-u-cusboonaysiinta polymer-ka ee lagu daray 0.6% miisaanka isku-darka. Turjumaadda: waddadu waxay u dhaqantay sidii mid cusub, laakiin waxay ku kacday 28% ka yar.
Sidee ayay dhirta Shiinuhu u hoos u dhigtaa kharashka raasamaalka?
Soo-saareyaasha reer Galbeedka ayaa badanaa soo sheega USD 5–6 milyan oo loogu talagalay warshad dib-u-warshadayn kulul oo 240 tph ah. Warshad isku-darka dib-u-warshadaynta kulul ee la mid ah oo shiineys ah ayaa ku dhow USD 2.8 milyan, xitaa ka dib marka la qaado canshuurta dhoofinta iyo soo dejinta. Saddex arrimood ayaa sababa farqiga:
- Is-dhexgalka toosan - Warshadaha Shiinaha waxay sameeyaan dab-shidayaal u gaar ah, sanduuqyada gear-ka, iyo qafisyada bacaha lagu xidho, iyagoo jaraya calaamadaha dhinac saddexaad.
- Cabbirka** - baahida gudaha ee waddooyinka waaweyn waxay ka badan tahay 4,000 km sannadkii, sidaa darteed alaab-qeybiyeyaashu waxay maamulaan khadadka wax soo saarka 24/7, iyagoo dhimaya kharashka cutubyada.
- Kabitaan dawladeed oo loogu talagalay qalabka "cagaaran" - dhoofiyayaasha waxay helaan 13% VAT dhimis ah, faa'iido si aamusnaan ah loogu gudbiyo iibsadayaasha dibadda.
ROI-ga Dhabta ah: Daraasad Kiis ah oo Nayjeeriya ah
Lagos State Public Works waxay qandaraas la gashay warshad Shiinees ah oo 200 tph ah rubuci 1aad ee 2022, iyadoo bartilmaameedsanaysa 120,000 t oo isku darka ah oo loogu talagalay waddooyinka isku xira garoomada diyaaradaha. Qiimaha naaftada: USD 0.92 litirkiiba; RAP waxaa laga heli karaa bilaash warshadaha maxalliga ah. Qandaraaslaha wuxuu gaaray 47% maadada RAP, isagoo badbaadiyay 31% bitumen iyo 22% wadarta guud. Lacag celinta waxay timid 14 bilood gudahood - maaha 10 sano ee aragtiyeed ee aad ka maqasho khudbadaha shirka. Intaa waxaa dheer, qiiqa CO₂ ayaa hoos u dhacay 38%, taasoo ka caawisay dowladda gobolka inay buuxiso heshiisyada amaahda ee AfDB. Ma xuma, sax?
Ka warran Taageerada Iibka Kadib—Qalabka Dayactirka ah ee Riwaayadda Madow ama Raacitaan Siman?
Iibsadayaashu waxay mar ka baqayeen in qalabka Shiinaha ee "raqiis ah" uu macnaheedu yahay toddobaadyo shaqo la'aan ah oo sugaya dareemayaal 2 kg ah. Waqtiyadu way is beddeleen. OEM-yada heerka sare ah hadda waxay ka shaqeeyaan xarumaha qaybaha gobolka ee Nigeria, Peru, iyo Poland, iyagoo 90% cutubyada la beddeli karo ee khadka ku haya kaydka maxalliga ah. Qaybta IoT ee VPN-ku-saleysan ee warshad kasta waxay u dirtaa telemetry xarunta dhexe ee Chengdu; algorithms-ka saadaalinta ayaa calaamad u ah silsilad wiish oo duugowday 150 saacadood oo shaqo ka hor intaysan dhicin. Macaamiishu waxay helaan biil pro-forma ah oo otomaatig ah waxayna dooran karaan DHL Express ama soo qaadashada maxalliga ah. Celceliska waqtiga shaqada waa 1.8 saacadood 1000 saacadood oo shaqo ah, oo la mid ah noocyada Yurub.
Khariidadda Nidaaminta: Dalkaagu ma ogolaan doonaa 50% RAP?
Kahor intaadan ku boodin wadada, hubi tilmaamaha maxalliga ah. Faransiiska, heerka NF P 98-150 wuxuu xaddidaa RAP 30% meelaha dusha sare, laakiin Jarmalka wuxuu oggol yahay 50% haddii isku darka dib loo warshadeeyay uu ka gudbo tijaabada falcelinta Alkali-Silica. Dhanka kale, dhowr gobol oo Mareykan ah ayaa wali ku lammaansan xadka 20%. Warka wanaagsan: warshad isku darka kulul ee dib u warshadaynta asfalt-ka Shiinaha ayaa u wareegi karta inta u dhaxaysa 15% iyo 60% RAP iyadoo si fudud u hagaajinaysa xawaaraha wiishka iyo astaanta gubashada, si aad u sii wadato u hoggaansanaanta inta aad u ololaynayso heerarka sare.
Faahfaahin Degdeg ah oo loogu talagalay Dukaameystayaasha Dhirta
| Halbeegga | Warshad Shiinees ah oo caadi ah oo 240 tph ah |
|---|---|
| Kala duwanaanshaha RAP | 10–60 % |
| Isticmaalka shidaalka | 5.2 kg naafto halkii tan oo isku darka ah @ 45% RAP |
| Dammaanad qoyaan | ≤0.3% isku darka kama dambaysta ah |
| Warshadda EI (Tusmada Tamarta) | 142 MJ/t (ISO 15695) |
| Koodhka Dhoofinta HS | 8474.32 |
Guntii iyo Gabagabadii: Maalgashiga ma u qalmaa sanadka 2024?
Iyada oo ganacsiga bitumen uu yahay USD 520 halkii tan iyo isku-darka oo kor u kacaya 9% sannadkii, boqolkiiba dhibic kasta oo RAP ah waxay badbaadisaa qiyaastii USD 7.40 halkii tan oo isku-darka ah. Warshad 200 tph ah oo shaqeyneysa 2,000 saacadood sannadkii waxay soo saartaa 400,000 t; 45% RAP, taasi waa USD 1.33 milyan oo la keydiyay sannad kasta. Ku dar deymaha kaarboonka iyo khidmadaha wareejinta qashinka, warshadda isku-darka dib-u-warshadaynta kulul ee asfalt-ka Shiinaha ayaa noqonaysa hantida ROI ee ugu dhaqsaha badan ee maraakiibtaada - haddii qiimaha saliiddu uu ka hooseeyo USD 40, xaalad xitaa falanqeeyayaasha ugu rajo-beelka badan ayaa dhimaysa. Diyaar ma u tahay inaad la hadasho lambarrada alaab-qeybiyaha, mise weli waxaad sugeysaa tignoolajiyada "ugu fiican" ee aan waligood imaan karin?
