1, Samfur
Ya kamata a yi samfurin siminti mai girma daga mai ɗaukar siminti kafin a ciyar da shi cikin silo mai ganga.Don siminti jakunkuna, yakamata a yi amfani da abin ƙira don yin samfurin bai gaza buhun siminti 10 ba.Lokacin yin samfur, yakamata a gwada simintin a gani don haɓakar danshi.Don buhunan siminti, ya kamata a zaɓi jakunkuna 10 ba da gangan don yin awo da ƙididdige matsakaicin nauyi a kowane isowa.
2. Yanayin gwaji
Matsakaicin zafin jiki na dakin gwaje-gwaje shine 20 ± 2 ℃, ƙarancin dangi bai kamata ya zama ƙasa da 50% ba;Yawan zafin jiki na samfuran siminti, ruwa mai hadewa, kayan aiki da kayan aiki ya kamata su kasance daidai da na dakin gwaje-gwaje;
Yanayin zafin jiki na akwatin maganin danshi shine 20 ± 1 ℃, kuma dangi zafi bai kasance ƙasa da 90%.
3. Ƙaddamar da amfani da ruwa don daidaitattun daidaito GB / T1346-2001
3.1 Kayan aiki da kayan aiki: mahaɗin manna siminti, kayan aikin vica
3.2 Jika kayan aiki da kayan aiki tare da rigar zane, auna nauyin 500g na siminti, zuba shi a cikin ruwa a cikin 5 ~ 10s, fara mahaɗin, ƙananan saurin hadawa 120s, tsayawa don 15s, sa'an nan kuma high gudun hadawa 120s tasha.
3.3 Matakan aunawa:
Bayan hadawa, nan da nan Mix da kyau ciminti net slurry a cikin gwajin mold da aka sanya a kan gilashin kasa farantin, saka da laban da wuka, a hankali girgiza sau da yawa, goge kashe wuce haddi net slurry;Bayan an daidaita, ana matsar da injin gwajin da farantin ƙasa zuwa kayan aikin veka, sannan a kafa cibiyarta a ƙarƙashin sandar gwajin, kuma ana saukar da sandar gwajin har sai ta tuntuɓi saman simintin net ɗin.Bayan danne sukurori na 1s ~ 2s, ba zato ba tsammani ya sami annashuwa, don haka mashaya gwajin ya nutse a tsaye kuma cikin yardar kaina cikin net ɗin siminti.Yi rikodin nisa tsakanin ledar gwajin da farantin ƙasa lokacin da ledar gwajin ta daina nutsewa ko ta saki ledar gwajin na daƙiƙa 30.Ya kamata a kammala aikin gabaɗaya a cikin mintuna 1.5.Matsakaicin daidaito na slurry siminti shine slurry siminti wanda aka nutse cikin sandar gwaji da 6± 1mm nesa da farantin ƙasa.Adadin ruwan da aka yi amfani da shi don haɗawa shine daidaitattun daidaito na siminti (P), wanda aka lasafta a matsayin adadin yawan siminti.
4. Ƙaddamar da lokacin saita GB/T1346-2001
Shirye-shiryen samfurin: daidaitattun daidaiton net slurry da aka yi da ruwa tare da daidaitattun daidaito an cika shi da ƙirar gwaji a lokaci ɗaya, an goge shi bayan sau da yawa na girgiza, kuma nan da nan an saka shi a cikin akwatin maganin danshi.Yi rikodin lokacin da aka ƙara siminti a cikin ruwa azaman lokacin farawa lokacin saita lokaci.
Ƙayyadaddun lokacin saitin farko: an warke samfurori a cikin akwatin maganin danshi har zuwa minti 30 bayan ƙara ruwa a karon farko.Lokacin da allurar gwajin ta nutse zuwa ƙasa 4 ± 1mm, simintin ya kai yanayin saitin farko;Lokaci daga ƙara siminti a cikin ruwa zuwa isa yanayin saitin farko shine lokacin saitin farko na siminti, wanda aka bayyana a cikin "min".
Ƙayyade lokacin saiti na ƙarshe: bayan ƙaddamar da lokacin saitin farko, nan da nan cire samfurin tare da slurry daga farantin gilashi ta fassarar, kuma juya shi 180 °.Diamita na babban ƙarshen sama, ƙaramin ƙarshen akan farantin gilashin, ƙara akwatin warkar da danshi don kiyayewa, kusa da ƙayyadaddun lokacin saiti na ƙarshe sau ɗaya kowane minti 15, lokacin gwada allura a cikin jikin 0.5 mm, wato abin da aka makala zobe ya fara ba zai iya barin alama a kan. gwada jiki, kai matsayi na ƙarshe na siminti, simintin ƙara ruwa har sai yanayin lokacin saita ƙarshe na lokacin saitin ƙarshe na siminti, ƙimar shine min.
Ya kamata a ba da hankali ga ƙaddarar, a cikin ƙaddamarwar farko na aikin ya kamata a hankali goyan bayan ginshiƙin ƙarfe, don haka a hankali ƙasa, don hana haɗarin allurar gwajin gwajin, amma sakamakon shine faɗuwa kyauta zai yi nasara;A lokacin duk aikin gwajin, matsayi na nutsewar allura ya kamata ya kasance aƙalla 10mm nesa da bangon ciki na ƙirar.Lokacin da saitin farko ya kusa, yakamata a auna shi kowane minti 5, kuma idan lokacin saitin ƙarshe ya kusa, sai a auna shi kowane minti 15.Lokacin da aka kai saitin farko ko saitin ƙarshe, yakamata a sake auna shi nan da nan.Lokacin da ƙarshe guda biyu suka kasance iri ɗaya, ana iya ƙididdige shi azaman isa ga saitin farko ko yanayin saitin ƙarshe.Kowane gwaji ba zai iya barin allurar ta fada cikin asalin fil ɗin ba, duk tsarin gwajin don hana girgizar ƙirar.
5. Ƙaddamar da kwanciyar hankali GB / T1346-2001
Samfurin gyare-gyare: sanya faifan Reisler da aka shirya akan farantin gilashin mai dan kadan, sannan nan da nan cika daidaitaccen daidaitaccen daidaitaccen slurry mai tsabta tare da Reisler sau ɗaya, saka kuma a taɓa shi sau da yawa tare da wuka mai faɗin 10mm, sannan a goge shi lebur, rufe dan kadan. farantin gilashin mai, kuma nan da nan matsar da samfurin zuwa akwatin maganin danshi don 24± 2h.
Cire farantin gilashin kuma cire samfurin.Da farko auna nisa tsakanin tukwici mai nuni na matsi na Reefer (A), daidai zuwa 0.5mm.Sanya samfurori guda biyu a kan ma'aunin gwaji a cikin ruwan zãfi tare da nuna alama yana fuskantar sama, sa'an nan kuma zafi su zuwa tafasa a cikin 30± 5min kuma ci gaba da tafasa don 180± 5min.
Sakamakon nuna bambanci: Bayan tafasa, bar ruwan da ke cikin akwatin, bayan akwatin ya sanyaya zuwa zafin jiki, fitar da samfurin don aunawa, nisa na tip mai nuna (C), daidai zuwa 0.5mm.Lokacin da matsakaicin ƙimar haɓakar nisa (CA) tsakanin samfuran biyu bai wuce 5.0mm ba, ana la'akari da cewa daidaiton ciminti ya cancanci.Lokacin da bambancin ƙimar (CA) tsakanin samfuran biyu ya wuce 4.0mm, za a sake gwada samfurin guda nan da nan.A wannan yanayin, ana ɗaukar kwanciyar hankali na ciminti bai cancanta ba.
6, Hanyar gwajin ƙarfin turmi siminti GB/T17671-1999
6.1 cakuda rabo
Haɗin ingancin turmi yakamata ya zama kashi ɗaya siminti, yashi daidaitaccen sassa uku da ruwa rabin ruwa (rabo siminti na ruwa 0.5).Kankare ciminti 450g, 1350g misali yashi, ruwa 225 g.Daidaiton ma'auni ya kamata ya zama ± 1g.
6.2
Kowace tukunyar yashi manne ana motsa shi da injina ta hanyar blender.Sanya mahaɗin a yanayin aiki da farko, sannan bi hanyar da ta biyo baya: ƙara ruwa a cikin tukunyar, sannan ƙara siminti, sanya tukunyar akan mariƙin, tashi zuwa tsayayyen wuri.Daga nan sai a fara injin din, mai saurin hadawa 30s, na biyu na 30s ya fara a lokaci guda don ƙara yashi daidai, juya injin zuwa babban haɗewar 30s, dakatar da haɗa 90s, sannan high speed mixing 60s, jimlar 240s.
6.3 Shiri na samfurori
Girman samfurin yakamata ya zama 40mm × 40mm × 160mm prism.
Ƙirƙiri tare da tebur mai jijjiga
Nan da nan bayan shirye-shiryen gyare-gyaren turmi, tare da cokali mai dacewa kai tsaye daga tukunyar motsawa za a raba shi zuwa nau'i biyu na turmi a cikin ƙirar gwaji, na farko Layer, kowane tanki game da turmi 300g, tare da babban feeder a tsaye frame a saman. da mold cover tare da saman gwajin mold tare da kowane tsagi baya da baya da zarar kayan Layer ne seed lebur, sa'an nan vibration 60 sau.Sannan sai a ɗora turmi na biyu, a shuka ƙasa da ɗan ƙaramin feeder, sannan a girgiza sau 60.Tare da wani karfe mai mulki zuwa kamar 90 ° Angle frame a saman gwajin mold, sa'an nan tare da tsawon shugabanci na gwajin mold tare da transverse sawing mataki sannu a hankali zuwa sauran ƙarshen motsi, fiye da gwajin mold part na yashi scraping, kuma tare da mai mulki iri ɗaya don kusan daidaita saman jikin gwajin.
6.4 Magance samfurori
Za a saka ƙwanƙwaran gwajin da aka yi wa alama a cikin kwalin siminti na ma'aunin warkewa, rushewa tsakanin 20-24h.Ana sanya samfurin da aka yiwa alama nan da nan a kwance ko a tsaye a cikin ruwa a 20℃± 1℃ don kiyayewa, kuma jirgin saman ya kamata ya kasance sama idan an sanya shi a kwance.
6.5 Gwajin ƙarfi da ƙima
Gwajin ƙarfin lanƙwasawa:
An auna ƙarfin ƙwanƙwasa ta hanyar sakawa ta tsakiya tare da na'urar gwaji mai ƙarfi.An gudanar da gwajin matsawa akan karyewar prism ta hanyar sanya shi akan ma'aunin ƙarfin matsawa.Fuskar matsawa ta kasance bangarori biyu na jikin gwajin lokacin da aka kafa ta, tare da yanki na 40mm × 40mm.(An yi rikodin karatu zuwa 0.1mpa)
Ƙarfin sassauƙa shine karatun kai tsaye akan injin gwaji, naúrar (MPa)
Ƙarfin matsawa Rc (daidai zuwa 0.1mpa) Rc = FC/A
Matsakaicin nauyi a gazawar Fc—-,
A—- Wurin matsi, mm2 (40mm×40mm=1600mm2)
Ƙimar ƙarfin sassauƙa:
Matsakaicin ƙimar juriyar juriya na rukuni na prisms uku ana ɗaukar shi azaman sakamakon gwaji.Lokacin da ƙimar ƙarfi uku suka wuce matsakaicin ƙimar ± 10%, matsakaicin ƙimar yakamata a cire shi azaman sakamakon gwajin ƙarfin sassauƙa.
Ƙimar Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙirar Ƙarfin Ƙirar Ƙarfin Ƙirar Ƙimar Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfafa shida da aka samu akan saiti na prisms uku shine sakamakon gwaji.Idan ɗaya daga cikin ma'auni shida ya wuce ± 10% na ƙimar ma'ana shida, yakamata a kawar da sakamakon sannan a ɗauki sauran ma'auni biyar.Idan ƙarin ma'auni biyar ɗin sun zarce ma'anarsu ±10%, saitin sakamako zai lalace.
7, Hanyar gwajin lafiya (hanyar bincike ta sieve 80μm) GB1345-2005
7.1 Instrument: 80μm gwajin allo, korau matsa lamba bincike kayan aiki, ma'auni (rabo darajar bai wuce 0.05g)
7.2 Hanyar gwaji: auna siminti 25g, sanya shi a cikin simintin matsa lamba mara kyau, rufe murfin sieve, sanya shi a kan tushe mai tushe, daidaita matsa lamba zuwa kewayon 4000 ~ 6000Pa.Lokacin bincike na nunawa, idan akwai haɗe zuwa murfin allo, zaku iya bugawa a hankali, don samfurin ya faɗi, bayan an duba, yi amfani da ma'auni don auna ragowar allon.
7.3 Lissafin Sakamako Ana ƙididdige ragowar kaso na samfurin siminti kamar haka:
F shine RS/W sau 100
Inda: F - ragowar adadin simintin siminti,%;
RS - Mass na siminti ragowar allo, G;
W - yawan samfurin siminti, G.
Ana ƙididdige sakamakon zuwa 0.1%.
Kowane samfurin za a auna kuma za a duba samfurori guda biyu daban, kuma za a dauki matsakaicin darajar sauran samfurori a matsayin sakamakon binciken bincike.Idan cikakken kuskuren sakamakon nunin guda biyu ya fi 0.5% (idan ragowar ƙimar nunin ta fi 5.0%, ana iya sanya shi zuwa 1.0%), ya kamata a sake yin wani gwajin, da ma'anar lissafi na sakamakon guda biyu iri ɗaya. yakamata a dauka a matsayin sakamako na karshe.
8, farin farin siminti
Lokacin yin samfur, ya kamata a auna farin siminti da launi a gani kuma a kwatanta shi da farin samfurin.
Lokacin aikawa: Dec-06-2021