Cikakken bayani:

Xi'an gwajin kayan aiki ka'idar

Halin siminti ya haɗa da halaye kamar fineness, misali daidaito amfani da ruwa, condensation lokaci, kwanciyar hankali da kuma siminti gum yashi ƙarfi.

Thickness na siminti particles yana da babban tasiri a kan halayen siminti. Size na siminti particle yawanci a cikin 7 ~ 200μm kewayon, particles mafi ƙaranci, hydration da sauri da kuma cikakken, farkon ƙarfi da kuma bayan ƙarfi ne mafi girma. A cikin ƙa'idodin ƙasa aka ƙayyade da fineness na siminti za a iya bincika ta hanyar bincike da kuma danganta yankin hanyar bincike. Fineness dubawa ta amfani da gwajin siffa da siffa rami diamita na 80μm.

Lokacin condensation ya raba zuwa farkon condensation da ƙarshen condensation. Na farko coagulation don siminti kara ruwa da kuma sa lokacin da ake bukata ga misali daidaito tsabtace pulp fara rasa plasticity; Lokacin da ake buƙata don ƙara ruwa don hadawa da siminti da kuma tsabtace slurry zuwa daidaitaccen daidaito ya rasa plasticity gaba daya kuma ya fara samar da ƙarfi. Ƙididdigar ƙasa ta ƙayyade cewa lokacin ƙwanƙwasawa na siminti yana ƙayyade ta hanyar daidaitaccen tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsa Silicate siminti ka'idoji ya bayyana cewa farkon coagulation lokaci ba zai iya wuce 45min, da ƙarshe coagulation lokaci ba zai iya wuce 6.5h.

Rashin kwanciyar hankali na girman yana nufin yanayin da ke haifar da canje-canje na girman girman da ba daidai ba bayan siminti ya ƙarfi. Rashin kwanciyar hankali na girma, yawanci saboda yawan calcium oxide mai kyauta da ke cikin kayan aiki. Ko saboda yawan magnesium free oxide da ke cikin kayan aiki ko yawan plaster da aka haɗa. Ka'idodin kasa sun tanada cewa za a gwada kwanciyar hankali na siminti ta hanyar tafiya. Hanyar tafiya tana taka rawar hanzarta calcium oxide maturation, don haka kawai za a iya bincika rashin kwanciyar hankali na siminti wanda calcium oxide kyauta ya haifar. Kuma magnesium oxide kyauta a ƙarƙashin tururi don hanzarta maturation, haɗarin plaster yana buƙatar dogon lokaci a cikin ruwan zafi na yau da kullun don ganowa, duka ba su da sauƙi don gwaji mai sauri. Saboda haka, ƙa'idodin ƙasa sun ƙayyade cewa ƙididdigar magnesium oxide kyauta a cikin siminti ba za ta wuce kashi 5.0 ba, ƙididdigar sulfur trioxide a cikin siminti ba ta wuce kashi 3.5 ba don sarrafa kwanciyar hankali na girman siminti.

Xi'an gwajin kayan aiki ma'ana da kuma manufa

Samanti ne foda, bayan haɗuwa da ruwa, bayan aikin sinadarai na zahiri za a iya juya shi daga plastics slurry zuwa dutse mai wuya, kuma zai iya haɗuwa da abubuwa masu ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙ Ganin yadda siminti ke amfani da shi sosai a cikin injiniya, ƙwarewar halayen siminti daban-daban yana da mahimmanci. Wannan gwajin hanyar ya dace da silicate siminti, na yau da kullun silicate siminti, ma'adinai silicate siminti, volcanic ash silicate siminti da kuma foda kwal ash silicate siminti.

Manufar wannan gwajin ita ce sa dalibai su fahimci ka'idodin kasa na siminti, su koyi hanyoyin aiki na binciken ingancin siminti da ƙirƙirar gwajin ƙarfi, su fahimci ainihin ma'anar injiniya na daban-daban alamun fasaha na ingancin siminti.

Hanyoyin gwaji da matakai

(1) m matsin lamba screening

Kafin gwajin bincike, ya kamata a sanya mummunan matsin lamba siffa a kan siffa wurin zama, rufe siffa murfin, haɗin wutar lantarki, duba sarrafa tsarin, daidaita mummunan matsin lamba zuwa 4000 ~ 6000Pa kewayon.

Weigh samfurin 25g, sanya a cikin tsabtace m matsa lamba siffa, rufe siffa rufi, sanya a kan siffa wurin zama, fara siffa analyzer ci gaba da siffa 2min, a wannan lokacin idan akwai samfurin haɗe da siffa rufi, za a iya sauƙi buga, sa samfurin fadi. Sieve, auna ragowar sieve tare da sikelin.

Lokacin da aiki mummunan matsin lamba kasa da 4000Pa, ya kamata a tsabtace ciki na inji mai tsabtace siminti don sa mummunan matsin lamba ya dawo al'ada.

Sakamakon gwaji:

Kashi na samfurin siminti da aka lissafa ta hanyar:

F - Screening kashi na siminti samfurin, %;

Rs - ingancin ragowar siminti, g；

W - ingancin samfurin siminti, g。

Wannan ya ragu zuwa 0.1%.

Tsabtace gwajin sifa.

(2) Standard daidaito ruwa amfani gwaji

Za a iya auna amfani da ruwa mai daidaituwa ta hanyar kowane hanyar daidaita yawan ruwa da yawan ruwa mara canji, idan akwai jayayya ta hanyar daidaita yawan ruwa.

Dole ne a duba kafin gwajin: karfe sanduna na kayan aiki ya kamata su iya free slide; Lokacin da gwaji cone sauka zuwa mold saman matsayi mai nuna alama ya kamata ya dace da daidaitaccen sifili; The mixer ya kamata ya yi aiki yadda ya kamata.

Samanti tsabta pulp haɗuwa da kuma kafin, haɗuwa da tukunyar da kuma haɗuwa da fata da farko da ruwa auduga tufafi, zai da kyau 500g siminti samfurin zuba a cikin haɗuwa tukunyar. Lokacin da aka haɗa da ruwa, da farko sanya ruwan da aka haɗa a kan kujerin ruwan da aka haɗa, hawa zuwa matsayin da aka haɗa, kunna na'ura, yayin da aka ƙara ruwan da aka haɗa da ruwa, a hankali haɗa 120s, dakatar da ruwan da aka haɗa 15s, sa'an nan kuma dakatar da ruwan da aka haɗa 120s da sauri.

A lokacin da aka yi amfani da hanyar daidaita yawan ruwa, a lokacin da aka yi amfani da hanyar da ba za a iya canzawa ba, a lokacin da aka yi amfani da 142.5ml na ruwa, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba, a lokacin da aka yi amfani da hanyar da ba za a canzawa ba. Dukkanin aiki ya kamata a kammala a cikin 1.5min bayan juyawa.

Lokacin da aka auna ta hanyar daidaita yawan ruwa, a matsayin daidaitaccen tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsabtace tsa Haɗuwa da yawan ruwa shine yawan ruwa mai daidaito na wannan siminti (P), bisa ga kashi na ingancin siminti. Idan zurfin nutsuwa ya wuce kewayon, dole ne a kira samfurin, daidaita yawan ruwa, sake gwajin har sai ya kai 28 ± 2mm.

Lokacin aunawa da hanyar da ba ta canzawa ba, danna nau'in S (mm) bisa ga zurfin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin gwajin

An lissafa yawan ruwa amfani da P (%) don daidaitaccen daidaito.

P = 33,4-0,185S

Lura: Lokacin da gwajin cone nutsewa zurfin kasa da 13mm, ya kamata a madadin haka ta hanyar daidaita yawan ruwa.

(3) Ƙididdigar lokacin condensation

Kafin ma'auni, sanya zagaye mold a kan gilashi farantin, a ciki gefen da kadan rufe wani layer na man fetur, daidaita condensation lokaci gauge don gwaji allura tuntuɓar gilashi farantin, mai nuna daidaita madaidaicin sifili.

Ka dauki siminti samfurin 500g, a daidaitaccen daidaito ruwa amfani bisa ga hanyar shirya tsabta pulp lokacin auna daidaitaccen daidaito, yin daidaitaccen daidaito tsabta pulp, nan da nan loda zagaye mold, rawar jiki sau da yawa bayan scraping, sa'an nan kuma sa a cikin m tururi kiyaye akwatin. Rubuta lokacin da aka fara ƙara ruwa a matsayin lokacin da aka fara lokacin da aka ƙara ruwa.

An auna lokacin da aka ƙunshi: an auna gwajin lokacin da aka kiyaye shi a cikin tankin kulawa na ruwa har 30min bayan ƙara ruwa. Lokacin ma'auni, cire zagaye mold daga akwatin kiyayewa da kuma sanya shi a karkashin gwajin allura, don haka gwajin allura da tsabtace pulp farfajiyar tuntuɓar, karfi dungulla 1 ~ 2s bayan ba zato ba tsammani shakatawa, gwajin allura tsaye kyauta nutsewa cikin tsabtace pulp, lura da allura karatu lokacin gwajin allura dakatar nutsewa. Lokacin da gwajin allura ya nutse zuwa 2 ~ 3mm daga ƙasa panel, shi ne ga siminti ya kai farko coagulation jihar; Lokacin da nutsewa ba ya wuce 1 ~ 0.5mm don siminti ya kai ƙarshen condensation yanayin. Lokacin da aka fara daga ƙara ruwa zuwa farkon coagulation, ƙarshen coagulation yanayin shine farkon coagulation lokaci da ƙarshen coagulation lokaci na wannan siminti, da aka nuna a cikin sa'o'i (h) da minti (min). Lokacin gwajin ya kamata a lura da cewa a lokacin da aka ƙaddamar da aiki na farko ya kamata a hankali a tallafawa sandunan ƙarfe, don haka ya sauka a hankali don hana walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar walƙirar Kowane gwaji ba za a iya barin gwajin walƙiya ta fadi cikin ramin walƙiya na asali ba, kowane gwaji dole ne a tsabtace walƙiya kuma a mayar da zagaye a cikin akwatin kiyayewa, a duk lokacin gwajin don hana zagaye daga zagaye.