Wannan binciken yayi amfani da fume silica azaman ƙarin kayan don kankare mai nauyi mai nauyi

(Wannan binciken yayi amfani da fume silica azaman ƙarin kayan don kankare mai nauyi mai nauyi)

Menene wakilan Kumfa?

Ma'aikatan kumfa sune kumfa admixtures ta amfani da janareta na kumfa, suna samar da barga kafin kumfa a cikin yanayin alkaline. Don haka ya dace da yin turmi mai ɗauke da kumfa. Ya kamata a sarrafa kumfa da aka riga aka ƙara zuwa turmi da aka haɗa don cimma yawan da ake so. Cakuda da aka yi amfani da ita shine sassa biyu na tara idan aka kwatanta da kashi 1 na ciminti idan yawan ya kasance ƙasa da 1000 kg/m3. Wakilin kumfa shine bayani mai mahimmanci na surfactant; don haka sai a narkar da shi da ruwa kafin amfani. Haɗuwar kumfa na iska daga wakilin kumfa zuwa turmi na iya haifar da ramukan iska a cikin turmi. Yin amfani da wakili mai kumfa a cikin kumfa kankare cakuda zai iya rinjayar kwanciyar hankali na kumfa, yawancin yawa, ƙananan ƙananan ƙwayoyin cuta da kuma sakamakon ƙarfin matsawa. Rage girman pore zai iya rinjayar ƙarfin matsa lamba na kankare kumfa. Akwai nau'ikan kumfa guda biyu don haɓakar kankare: roba da tushen furotin. Yawan kumfa mai tushen roba yana da kusan 40 kg/m3 kuma yana iya faɗaɗa zuwa sau 25 na farkon ƙarar. Wannan wakili mai kumfa yana da matukar kwanciyar hankali don simintin kumfa mai yawa sama da 1000 kg/m3, tare da rabon kumfa da ruwa kasancewa 1:19. A halin yanzu, kumfa da aka yi daga ma'aunin furotin na halitta kusan 80 kg/m3 na iya faɗaɗa kusan sau 12.5 ƙarar farko. Wannan kumfa ya fi kwanciyar hankali kuma yana da ƙarfi fiye da kumfa na roba. Adadin kumfa da ruwa shine 1:33 zuwa 1:39. Tsari curing na CLC yana da hanyoyi biyu, wato rigar curing da tururi curing a yanayi matsa lamba. Yawancin lokaci CLC ana ba da ɗan gajeren lokacin jiyya a cikin aikin warkewa, wanda aka shayar da shi, gabaɗaya kusan kwanaki 1-7 sannan a bar shi ya bushe da kansa. A halin yanzu, maganin tururi a matsin yanayi na 50-80 ° Celsius yana haɓaka taurin CLC, bushewa da bushewa da motsi na danshi bayan bushewar tururi na yanayi na matsakaicin sa'o'i 24. Ruwa a cikin cakuɗen kankare yana da ayyuka biyu, na farko don ba da damar halayen sinadarai waɗanda ke haifar da ɗaurewa da tauri, na biyu kuma azaman tsakuwa, yashi da cakuda siminti don yin gyare-gyare cikin sauƙi. Ruwan da ake amfani da shi dole ne ya kasance ba tare da abubuwa masu cutarwa ba kamar laka, yumbu, kwayoyin halitta da acid Organic, alkalis da sauran gishiri.

Wannan binciken yayi amfani da fume silica azaman ƙarin kayan don kankare mai nauyi mai nauyi

Fume silica busassun busassun busassun busassun micro silica admixture ne don kankare siminti na Portland da turmi. Fume silica ya ƙunshi manyan matakan SiO2 kuma yana da santsi, siffa mai zagaye, wanda ke da diamita na 1/100 sau diamita na siminti. A amfani, silica fume ne wani ɓangare na maye gurbin siminti a cikin wani kankare cakuda, 5% -15% na jimlar nauyin siminti. Fume silica yana cika ramuka tsakanin kayan siminti. Cika ramuka a cikin kankare yana da tasiri mai mahimmanci akan ƙarfin matsa lamba na siminti. Silica fume pozzolan ne wanda zai iya amsawa tare da Ca (OH) 2 don samar da C3S2H3 a matsayin tushen ƙarfin kankare. Masu bincike na baya sun yi ƙoƙarin ƙara ƙarfin siminti tare da ƙari na siliki a cikin ƙirar haɗin gwiwa. Duk da haka, ƴan bincike ne kawai ke tattaunawa game da ƙari na silica fume don ƙara ƙananan bulogi, musamman ma'aunin nauyi mai nauyi (CLC), gwaji da ƙididdiga ta amfani da software na LUSAS. Sabili da haka, wannan binciken yana nufin gano halayen injina na CLC dangane da adadin maye gurbin silica fume a cikin cakuda turmi na CLC. CLC siminti ne mai ƙyalli da aka samar da injina ta hanyar ƙara wakili mai kumfa. Yawancin pores a cikin simintin na iya iyakance ƙarfinsa, yana sa tubalan CLC ya fi raguwa fiye da tubalin yumbu. Sabili da haka, ya zama dole don ƙara wasu kayan aiki don haka kasancewar waɗannan pores ba zai rage ƙarfin ƙarfin kumfa ba.

Kayayyaki da hanyoyin kumfa kankare

Hanyar bincike tana nazarin ƙaddarorin abubuwan da suka ƙunshi gwaje-gwaje da yawa kamar abun ciki na ruwa, nauyin girma, takamaiman nauyi, bincike na sieve, abun cikin silt, da abun ciki na halitta. An fara binciken ne ta hanyar gwada kaddarorin tara tara masu kyau a dakin gwaje-gwaje na Gwajin Kayayyakin, Kwalejin Injiniya, Jami'ar Riau, Indonesia. Abubuwan da aka yi amfani da su a cikin wannan binciken sune nau'in siminti na Portland Composite (PCC) nau'in CEM I 42.5 N, tara mai kyau (yashi), ruwa, wakili mai kumfa da silica fume. A cikin wannan binciken, PCC cement daga Kamfanin Semen Padang, Indonesia. Bisa ga Standard Indonesiya, PCC cement ya ƙunshi farar ƙasa mai ɗauke da calcium oxide (CaO), yumbu mai ɗauke da silica oxide (SiO2), aluminum oxide (Al2O3), iron oxide (Fe2O3) da gypsum, wanda ke aiki don sarrafa taurin. Haɗin simintin Portland shine sakamakon haɗa foda siminti na Portland tare da sauran foda na inorganic. Kayan inorganic sun haɗa da slag tanderu, pozzolan, mahadi na silicate, da dutsen farar ƙasa, tare da jimlar abun ciki na inorganic na 6%-35% na yawan siminti mai haɗe-haɗe. Mafi kyawun jimlar wannan binciken sun yi amfani da yashin kogin na halitta daga kogin Kampar, Lardin Riau, Indonesia. Wannan binciken da aka gudanar shine bincike na sieve don tantance girman jimlar girman da ya dace da matsayin ASTM. Ƙididdigar ƙaƙƙarfan ƙaƙƙarfan kaddarorin jiki da bincike na sieves. Rarraba girman hatsi na tara tara. A cewar Ref. Ƙayyade yanki na gradation da nau'in yashi ya dogara ne akan adadin da ke wucewa mai kyau tara sieve. Yashin da ke yankin gradation ya kasance yanki na 2, yashi mai ɗanɗanar hatsi.

Farashin Kumfa Concrete

Kumfa Kankare Girman barbashi da tsarki zai shafi Farashin samfurin, kuma ƙarar siyan kuma na iya shafar farashin Kumfa Kankara. Babban adadin adadi mai yawa zai zama ƙasa. Farashin Kumfa Concrete yana kan gidan yanar gizon mu na hukuma.

Foam Concrete mai kaya

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(Wannan binciken yayi amfani da fume silica azaman ƙarin kayan don kankare mai nauyi mai nauyi)