Portland Sibidhka
Dambaska duulista Sibidhka Portland waxa uu tilmaamayaa isku-darka clinker-ka cement-ka Portland iyo dambaska duulista, oo lagu qasay xaddi ku habboon oo gypsum ah ka dibna la shiiday, oo loogu magac daray PF. Wax kasta oo sibidh haydarooliga ah oo laga sameeyay clinker-ka cement-ka Portland, dambaska duulista iyo xaddi ku habboon oo dhulka gypsum ah waxaa loo yaqaan dambaska duulista Portland. Sibidhka Portland, oo loogu magac daray PF. Qadarka dambaska duulista ee lagu daray sibidhka waa 20% ~ 40% cuf ahaan, heerka xooggiisa iyo shuruudaha xoogga ee da' kastana waa isku mid sida kuwa slag-ka cement-ka Portland.
Walax ceeriin ah
Waxa laga sameeyay Portland cement clinker iyo dambaska duqsiga, lagu qasay qadar ku habboon oo gypsum ah ka dibna la shiiday. Koodhka PF
Walax kasta oo sibidh haydarooliga ah oo laga sameeyay cement clinker Portland, dambas duulis ah iyo xaddi ku habboon oo dhulka gypsum ah waxaa loo yaqaan dambas duulis ah Sibidhka Portland, oo loogu magac daray PF. Cadadka dambas duulis ah ee lagu daray sibidhka waa 20% ilaa 40% cuf ahaan. Waxaa loo oggol yahay inuu ka qaybqaato slag foornada qaraxa ee granulated ah oo aan ka badnayn 1/3 wadarta guud ee walxaha isku dhafan. Waqtigan xaadirka ah, wadarta guud ee walxaha isku dhafan waxay gaari kartaa 50%, laakiin qadarka dambas duulis ah waa inaanu ka yaraan 20% ama ka badan 40%.
Astaamaha
Qaab-dhismeedka sibidhka dambaska duulista waa mid cufan, aagga dusha sare ee gudaha waa yar yahay, awoodda nuugista biyahana aad bay u yar tahay, baahida biyaha ee fuuq-celinta sibidhkana waa yar tahay, sidaa darteed yaraanta qalalan ee sibidhka dambaska duulista waa yar tahay, iska caabbinta dildilaacana sidoo kale waa yar tahay. Waa fiican tahay. Intaa waxaa dheer, oo la mid ah sibidhka guud ee lagu qasay isku-darka firfircoon, waxay leedahay kulayl fuuq-celin hooseeya iyo iska caabbinta miridhka oo xooggan.
Bandhigga
Sifooyinka gaarka ah ee dambaska duulista ee Portland sibidhka waa sida soo socota:
(1) Xoogga hore waa hooseeyaa, heerka kororka xoogga dambena waa weyn yahay: xoogga hore ee sibidhka dambaska duulista waa hooseeyaa, xoogga horena si weyn ayuu hoos ugu dhacaa marka uu kordho heerka dambaska duulista. Maadaama jidhka vitreous ee dambaska duulista uu aad u deggan yahay, walxaha dambaska duulista ayaa si tartiib tartiib ah u burbura Ca(OH)2 inta lagu jiro habka fuuq-baxa ee sibidhka dambaska duulista, sidaa darteed horumarinta xoogga ee sibidhka dambaska duulista ayaa inta badan ka muuqata marxaladda dambe. , heerka kororka xoogga dambe waa weyn yahay, xitaa wuxuu ka sarreyn karaa xoogga dambe ee sibidhka Portland ee u dhigma.
(2) Shaqo wanaagsan iyo yaraanta qalalan: Sababtoo ah inta badan walxaha dambaska duqsiga waa kuwo wareegsan oo adag, oo aagga dusha sare ee gudaha iyo biyaha nuugista hal-molecule ay yar yihiin, sibidhka dambaska duqsiga wuxuu leeyahay shaqeyn wanaagsan iyo yaraanta qalalan oo yar., wuxuu leeyahay astaamaha xoogga adkaanta sare iyo iska caabinta dildilaaca wanaagsan. Tani waa faa'iido cad oo ka mid ah sibidhka dambaska duulista.
(3) Iska caabin wanaagsan oo daxaleed: sibidhka daxalka wuxuu leeyahay iska caabin sare oo daxaleed oo u adkaysta biyaha cusub iyo sulfate. Iyada oo ay ugu wacan tahay isku-darka SiO2 firfircoon ee daxalka duulista iyo Ca(OH)2, kaalshiyamka silicate hydrate ayaa la soo saaraa marka la dheellitiro. Xoogga xadka loo baahan yahay (tusaale ahaan alkalinity-ga marxaladda dareeraha ah) aad ayuu uga hooseeyaa kan loo baahan yahay dheelitirka kaalshiyamka silicate hydrate ee sibidhka caadiga ah ee Portland, sidaa darteed heerka daxalka ee biyaha cusub ayaa si weyn hoos ugu dhacaya, taasoo hagaajinaysa iska caabinta sibidhka. Awoodda daxalka biyaha cusub iyo iska caabinta dhaawaca sulfate.
(4) Kulayl yar oo fuuq-celin ah: Xawaaraha fuuq-celinta ee sibidhka dambaska duulista waa mid gaabis ah kulaylka fuuq-celintana waa mid hooseeya, gaar ahaan marka xaddiga dambaska duulista lagu daray uu weyn yahay, hoos u dhaca kulaylka fuuq-celinta aad ayuu u muuqdaa.
Sibidhka Portland
Dhammaan qalabka cement-ka ee Portland wuxuu ka kooban yahay kalsiyum silicate, dhagaxa nuuradda ama granulated blast slag oo leh wax ka yar 5%, iyo walxaha cement-ka ee haydarooliga laga sameeyay gypsum-ka si fiican loo shiiday waxaa si wadajir ah loogu yeeraa sibidhka Portland. Caalami ahaan waxaa loo yaqaan Portland Cement.
Kala-soocidda
Sibidhka Portland waxa loo qaybiyaa laba nooc, nooca I ee sibidhka Portland ee aan lahayn walxo isku dhafan waxaa loo yaqaan Portland sibidhka, lambarka P·I; walxaha isku dhafan ee leh dhagaxa nuuradda ama foornada qaraxa ee granulated oo aan ka badnayn 5% cufka sibidhka waxaa loo yaqaan II Nooca sibidhka Portland, lambarka P·Ⅱ.
Halabuurka macdanta
Macdanta ugu weyn ee sibidhka Portland waa: tricalcium silicate, dicalcium silicate, tricalcium aluminate, iyo tetracalcium ferric aluminate. Tricalcium silicate waxay go'aamisaa xoogga sibidhka Portland afar toddobaad gudahood; dicalcium silicate waxay xooggeeda saartaa oo keliya afar toddobaad ka dib, waxayna gaartaa xoogga sibidhka tricalcium muddo afar toddobaad ah qiyaastii sannad gudaheed; xoogga sibidhka tricalcium aluminate Waxay si dhakhso ah u shaqeysaa, laakiin xooggu waa hooseeyaa, waxayna door gaar ah ka ciyaartaa xoogga sibidhka Portland 1 ilaa 3 maalmood gudahood ama wax yar ka dheer; Kaalinta xoogga sibidhka milixda aashitada waa yar tahay.
Waqtiga boostada: Febraayo-14-2022