I-ash ash oveliswa ngamagunya okushisa amalahle inikeza ixabiso eliphambili kakhulu elisetyenzisiweyo kwisamente edibeneyo, iileyiti ze-mosaic kunye neebhloko ezingenanto phakathi kwabanye.
I-ash ash uyakuba yindleko ephezulu kwi-konterrey yase-Portland kwikhonkrithi nangona ukuyisebenzisa kuphucula amandla, ukuhlula, kunye nokulula kwekhonkrithi. Isantya sokufaka endaweni echazwe ngokucacileyo ngu-1 ukuya ku-1 ½ iipounds ze-ash ash fly to 1 pound of samente. Nangona kunjalo, inani lexabiso elihle lifanele lihliswe ukuze lenze umthamo owongezelelweyo we-ash ash.
Izicelo zeFly Ash
I-ash ash uyasetyenziswa njengezinto eziphambili kwiibhloko, ukupaka okanye izitena ; Nangona kunjalo, enye yezona zibalulekileyo zicelo zihamba ngePCC. Iipacvements ze-PCC zisebenzisa ixabiso elikhulu lokukhonkxa kunye nokutshintshwa kwe-ash ash zibonelela ngeenzuzo ezibalulekileyo zezoqoqosho. I-ash ash ibuye isetyenziselwe ukuhamba ngeendlela kunye nokugcwala kunye nokuzaliswa kwam, kwaye ufumana ukwamkelwa nguRhulumente waseburhulumenteni, ngokukodwa kwi-Federal Highway Administration.
Fly Ash Drawbacks
Abakhi abancinci kunye nabakontrakthi bezindlu abaqhelananga nemveliso ye-ash ash ekwazi ukufumana iipropati ezahlukileyo kuxhomekeke apho kwaye zenzeke khona.
Ngenxa yeso sizathu, ukufakela izicelo zotshani zihlangabezana nokuchasana nabakhi bendabuko ngenxa yokuthambekela kwe-effloresce kunye neenkxalabo ezinkulu malunga nokusebenza kwefree / thaw ukusebenza.
Ezinye iinkxalabo ezinkulu malunga nokusebenzisa ikhonkrithi ye-ash ash uquka:
- Ukufumana amandla okuncinci.
- Umda wexesha.
- Ukwandiswa kwe-air-entraining admixtures.
- Ukwanda kweetyuwa ukunyuka okuveliswa ngumlotha ophezulu.
Fly Ash Benefits
Umlotha okhuphayo unokuba yinxalenye ebiza imali kwiParkland samente kwezinye iimarike. Ukongezelela, i-ash ash iyakwazi ukubonwa njengomkhiqizo onobuhlobo bendalo ngenxa yokuba iproduct kwaye inamandla aphantsi. Kukwafumaneka kwakhona ngemibala emibini, kunye nee-agent agents ziyakongezwa kwindawo yomsebenzi. Ukongezelela, i-ash ash ifuna amanzi angaphantsi kune- Portland samente kwaye kulula ukuyisebenzisa kwimvula ebanda. Ezinye izibonelelo ziquka:
- Uvelisa amaxesha ahlukeneyo.
- Ukutshatyalazwa kwemozulu yomshushu.
- Amandla aphezulu azuza, kuxhomekeke ekusebenziseni kwawo.
- Ingasetyenziselwa ukuxuba.
- Unokuthi ubeke endaweni yeSamente yasePortland.
- Kucingwa njengento engahlaziyiyo.
- Ivelisa ikhonkrithi yesigxina kunye nomhlaba olula kunye neenkcukacha ezinzulu.
- Ukusebenza okukhulu.
- Iyanciphisa iingxaki zokuqhaqha, ukuphelisa, nokuphuma kwamanzi
- Iyancipha ukushisa kwe-hydration.
- Uvelisa umlinganiselo ophantsi wamanzi / isenti kwiimpawu ezifanayo xa kuthelekiswa nokungaxubezeli kwe-ash ash.
- Iyanciphisa ukukhutshwa kwe CO2.
Uhlobo lwe-Fly Ash
Njengamanje, ngaphezulu kwe-50 ekhulwini yekhonkrithi ebekayo e-US iqukethe umlotha wokuqhuma. Ixabiso lentlawulo liyahlukahluka ngohlobo lomlotha we-fly kunye ne-reactivity level. Ngokuqhelekileyo, iFlebhu F fly ash isetyenziswe kumlinganiselo we-15 kuya kweepesenti ezingama-25 ngobuninzi bezinto ezinommiselo, kunye neCandelo C ukuqhuma umlotha kwi-15 ukuya kuma-40 ekhulwini.
Iklasi F fly ash, kunye neengqungquthela ezigqityiweyo ngolu hlobo lweglasi edibeneyo, kunciphisa kakhulu umngcipheko wokunyuselwa ngenxa yokuhlaselwa kwe-sulfate njengoko kungenzeka kumhlaba onotyulo okanye kwindawo eselunxwemeni. Iklasi F ngokuqhelekileyo i-calcium ye-fly ash kunye ne-carbon e-contents engaphantsi kwama-5 ekhulwini kodwa ngamanye amaxesha iphakamileyo njengama-10 ekhulwini. Udidi lwe-C Inkomfa ye-fly fly also resistant to expansion from chemical attack, inomlinganiselo ophezulu we-calcium oxide, kwaye isetyenziswa ngokuqhelekileyo kwikhonkrithi yesakhiwo. Iklasi le-C inqabana elinyukayo liqukethe i-high-calcium fly fly with carbon content less than 2 percent.