1, isampuli
Isamente eninzi kufuneka ithathwe kumthuthi wesamente phambi kokuba ifakwe kwisisele somphanda.Kwingxowa yesamente, isampuli kufuneka isetyenziswe ukwenza isampulu engekho ngaphantsi kweengxowa ezili-10 zesamente.Xa isampuli, i-samente kufuneka ihlolwe ngokubonakalayo ukunyuswa komswakama.Kwiingxowa zesamente, iingxowa ezili-10 kufuneka zikhethwe ngokungaqhelekanga ukuba zilinganise kwaye zibale ubunzima obuqhelekileyo ekufikeni ngalunye.
2. Iimeko zovavanyo
Ubushushu belabhoratri yi-20±2℃, ukufuma okunxulumeneyo akufunekanga kube ngaphantsi kwe-50%;Ubushushu beesampuli zesamente, amanzi okuxuba, izixhobo kunye nezixhobo kufuneka zihambelane nelabhoratri;
Ubushushu bebhokisi yokunyanga ukufuma yi-20±1℃, kwaye ukufuma okuhambelanayo akukho ngaphantsi kwe-90%.
3. Ukumiselwa kokusetyenziswa kwamanzi kwi-GB / T1346-2001 eqhelekileyo
3.1 Izixhobo kunye nezixhobo: i-cement paste mixer, isixhobo se-vica
3.2 Nyakazisa isixhobo kunye nezixhobo ngelaphu elimanzi, linganisa i-500g yesamente, ugalele emanzini ngaphakathi kwe-5 ~ 10s, qalisa umxube, udibanise isantya esiphantsi se-120s, umise i-15s, kwaye emva koko udibanise isantya esiphezulu se-120s stop.
3.3 Amanyathelo omlinganiselo:
Emva kokuxuba, ngokukhawuleza udibanise i-sement slurry net slurry kwi-mold yokuvavanya ibekwe kwi-plate ephantsi yeglasi, faka kunye ne-pound ngemela, ushukumise ngobunono amaxesha amaninzi, ukhuphe i-slurry engaphezulu;Emva kokulinganisa, i-mold test kunye ne-plate ephantsi ihanjiswe kwisixhobo se-veka, kwaye iziko layo ligxininiswe phantsi kwebha yokuvavanya, kwaye ibha yokuvavanya iyancipha ide idibane nomphezulu we-samente slurry.Emva kokuqinisa izikhonkwane ze-1s ~ 2s, iyancipha ngokukhawuleza, ukwenzela ukuba ibha yokuvavanya iyancipha ngokuthe nkqo kwaye ngokukhululekileyo kwi-samente slurry.Rekhoda umgama phakathi kwe-lever yokuvavanya kunye ne-plate ephantsi xa i-lever yokuvavanya iyeka ukucwila okanye ikhupha i-lever yokuvavanya imizuzwana engama-30.Umsebenzi wonke kufuneka ugqitywe kwimizuzu eyi-1.5.Ukuhambelana okusemgangathweni kodaka lwesamente ludaka lwesamente oluthe lwatshona kwintonga yovavanyo kunye ne-6±1mm kude nepleyiti engezantsi.Ubungakanani bamanzi asetyenziselwa ukuxuba kukuhambelana okusemgangathweni kwesamente (P), kubalwa njengepesenti yobunzima besamente.
4. Ukumiselwa kwexesha lokumisela i-GB/T1346-2001
Ukulungiswa kwesampulu: i-slurry esemgangathweni ye-net consistency net eyenziwe ngamanzi kunye nokuhambelana okusemgangathweni yazaliswa ngumbumba wokuvavanya ngexesha elinye, ikhutshiwe emva kwamaxesha amaninzi okungcangcazela, kwaye ngokukhawuleza ifakwe kwibhokisi yokunyanga ukufuma.Rekhoda ixesha xa isamente yongezwa emanzini njengexesha lokuqala lokumisela ixesha.
Ukumiselwa kwexesha lokuqala lokumisela: iisampuli zanyangwa kwibhokisi yokunyanga ukufuma kude kube yi-30min emva kokongeza amanzi okokuqala.Xa inaliti yokuvavanya ihla ukuya ngaphantsi kwe-4 ± 1mm, i-samente ifikelela kwisimo sokuqala sokubeka;Ixesha lokongeza i-samente emanzini ukuya kwinqanaba lokuqala lokumisela lixesha lokuqala lokumisela i-samente, elichazwe kwi-"min".
Ukumiselwa kwexesha lokugqibela lokumisela: emva kokumiselwa kwexesha lokuqala lokumisela, susa ngokukhawuleza isampuli nge-slurry kwi-plate yeglasi ngokuguqulela, kwaye uyiguqule i-180 °.Idayamitha yesiphelo esikhulu, isiphelo esincinci kwipleyiti yeglasi, yongeza ibhokisi yokunyanga ukufuma ekugcinweni, kufutshane nokumiselwa kwexesha lokugqibela kanye ngemizuzu eli-15, xa iinaliti zamazama emzimbeni we-0.5 mm, oko kukuthi, ukuncamatheliswa kweringi kwaqala ukungakwazi ukushiya uphawu. zama umzimba, fikelela kwimo yokugqibela iseti yesamente, isamente yongeza amanzi kude kube yimeko yexesha lokugqibela elibekiweyo lexesha lokugqibela lesamente, Ixabiso lemin.
Ingqalelo kufuneka ihlawulwe ukuzimisela, ekumiselweni kokuqala umsebenzi kufuneka ngobunono ukuxhasa ikholamu yesinyithi, ukuze ngokuthe chu, ukuthintela uvavanyo inaliti ukungqubana ukugoba, kodwa isiphumo sokuwa simahla uya koyisa;Ngethuba lenkqubo yokuvavanya yonke into, indawo yenaliti yokucwila kufuneka ibe ubuncinane ubuncinane be-10mm kude nodonga lwangaphakathi lokubumba.Xa ukusetwa kokuqala kusondele, kufuneka kulinganiswe yonke i-5min, kwaye xa ixesha lokugqibela lokumisela lisondele, kufuneka lilinganiswe rhoqo nge-15min.Xa useto lokuqala okanye useto lokugqibela lufikelelwe, kufuneka lulinganiswe kwakhona ngoko nangoko.Xa ezi zigqibo zimbini zifana, kunokumiselwa njengokufikelela kwindawo yokuqala okanye imo yokugqibela yokumisela.Uvavanyo ngalunye alunakuvumela inaliti iwele kumngxuma wokuqala, yonke inkqubo yovavanyo yokuthintela ukungcangcazela kokungunda.
5. Ukumiselwa kozinzo GB/T1346-2001
Ukubumba umzobo: beka ikliphu yeReisler elungisiweyo kwipleyiti yeglasi eneoyile, kwaye ngoko nangoko ugcwalise umgangatho olungiselelweyo ococekileyo ococekileyo kunye neReisler kube kanye, uyifake kwaye uyicofe amatyeli aliqela ngemela malunga ne-10mm ububanzi, emva koko wosule umcaba, ugqume kancinci. ipleyiti yeglasi yokuthambisa, kwaye ngoko nangoko uhambise umboniso kwibhokisi yokunyanga ukufuma kangange 24±2h.
Susa ipleyiti yeglasi kwaye ukhuphe isampuli.Qala ulinganise umgama phakathi kweengcebiso zesalathisi se-Reefer's clamp (A), echanekileyo ukuya kwi-0.5mm.Beka imizekelo emibini kwi-A test rack emanzini abilayo kwaye isalathisi sijonge phezulu, kwaye emva koko uyifudumeze ukuba ibile kwi-30±5min kwaye uhlale ubila kangange-180±5min.
Ucalucalulo lwesiphumo: Emva kokubilisa, vumela amanzi kwibhokisi, emva kokuba ibhokisi ipholile kwiqondo lokushisa, khupha isampuli yokulinganisa, umgama wencam yesalathisi (C), echanekileyo ukuya kwi-0.5mm.Xa umyinge wexabiso lomgama owandisiweyo (CA) phakathi kweesampuli ezimbini awukho ngaphezu kwe-5.0mm, kuqwalaselwa ukuba ukuzinza kwe-samente kuyafaneleka.Xa umahluko wexabiso le-(CA) phakathi kwemizekelo emibini ingaphezulu kwe-4.0mm, isampuli efanayo iya kuphinda ihlolwe ngokukhawuleza.Kule meko, ukuzinza kwesamente kuthathwa njengento engafanelekanga.
I-6, indlela yokuvavanya amandla e-samente yodaka lwe-GB/T17671-1999
6.1 umlinganiselo womxube
Umxube womgangatho wodaka kufuneka ube yinxalenye yesamente enye, izahlulo ezintathu zesanti eqhelekileyo kunye nesiqingatha samanzi (umlinganiselo wesamente yamanzi 0.5).Concrete Cement 450g, 1350g isanti eqhelekileyo, amanzi 225 g.Ukuchaneka kwebhalansi kufuneka kube ±1g.
6.2 ukushukumisa
Imbiza nganye yesanti yeglue ixutywe ngoomatshini nge-blender.Beka umxube kwindawo yokusebenza kuqala, uze ulandele le nkqubo ilandelayo: yongeza amanzi embizeni, uze ungeze i-samente, ubeke ibhodwe kwisibambi, unyuke kwindawo emiselweyo.Emva koko qalisa umatshini, isantya esiphantsi sokuxuba i-30s, i-30 yesibini yaqala ngexesha elifanayo ukudibanisa ngokulinganayo isanti, ukuguqula umatshini kwisantya esiphezulu sokuxuba i-30s, uyeke ukuxuba i-90s, kwaye emva koko ukuxuba i-60s, i-240s iyonke.
6.3 Ukulungiswa kwemizekelo
Ubungakanani bomzekelo kufuneka bube yi-40mm×40mm×160mm yeprism.
Ukubumba ngetafile engcangcazelayo
Kwangoko emva kokulungiswa kokubumba udaka, kunye necephe elifanelekileyo ngqo kwimbiza eshukumisayo iya kwahlulwa ibe ngamaleko amabini odaka kwisingundo sovavanyo, umaleko wokuqala, itanki ngalinye malunga nodaka lwe-300g, kunye nesakhelo esikhulu sokutya esithe nkqo phezu kodaka. Isigqubuthelo somngundo ecaleni komphezulu wovavanyo lokungunda ecaleni komqolo ngamnye emva naphambili xa umaleko wemathiriyeli utyalwe mcaba, emva koko ungcangcazela amaxesha angama-60.Emva koko layisha umaleko wesibini wodaka, hlwayela umcaba nge-feeder encinci, kwaye ungcangcazele amaxesha angama-60.Kunye nerula yesinyithi ukuya malunga ne-90 ° isakhelo se-Angle kumphezulu wovavanyo lokungunda, kwaye emva koko ecaleni kobude bomngundo wovavanyo kunye nentshukumo yesarha enqamlezayo ngokucothayo ukuya kwelinye isiphelo sentshukumo, ngaphezulu kwenxalenye yovavanyo ukukhuhla isanti, kunye nerula efanayo ukuya phantse kwinqanaba lomzimba wovavanyo.
6.4 Ukunyangwa kwemizekelo
Umngundo wovavanyo ophawulweyo uya kufakwa kwibhokisi yesamente yomgangatho wokunyanga, edityaniswe phakathi kwe-20-24h.Umzekelo ophawuliweyo ubekwe ngoko nangoko ngokuthe tye okanye ngokuthe nkqo emanzini kwi-20℃±1℃ ukuze ugcinwe, kwaye inqwelo-moya yokukrwela kufuneka ibe phezulu xa ibekwe ngokuthe tye.
6.5 Uvavanyo novavanyo lwamandla
Ukugoba uvavanyo lwamandla:
Amandla e-flexural alinganiswa ngendlela yokulayisha iziko kunye nomatshini wokuvavanya amandla e-flexural.Uvavanyo loxinzelelo lwenziwa kwiprism eyaphukileyo ngokuyibeka kumvavanyi wamandla oxinzelelo.Umphezulu woxinzelelo wawungamacala amabini ovavanyo lomzimba xa usenziwa, kunye nommandla we-40mm × 40mm.(Ukufunda kubhalwe kwi-0.1mpa)
Amandla e-flexural kukufunda ngokuthe ngqo kumatshini wokuvavanya, iyunithi (MPa)
Amandla oxinzelelo lwe-Rc (echanekile ukuya kwi-0.1mpa) Rc = FC / A
Ubuninzi bomthwalo xa ukusilela kwe-Fc—-,
A—- Indawo yoxinzelelo, mm2 (40mm×40mm=1600mm2)
Uvavanyo lwamandla e-Flexural:
Umyinge wexabiso lokumelana ne-flexural yeqela leeprism ezintathu lithathwa njengesiphumo sovavanyo.Xa amaxabiso amathathu amandla edlula ixabiso eliphakathi kwe-± 10%, ixabiso eliqhelekileyo kufuneka lisuswe njengesiphumo sovavanyo lwamandla e-flexural.
Uvandlakanyo lwamandla acinezelayo: ixabiso lovandlakanyo lwe-arithmetical yamaxabiso amathandathu amandla acinezelayo afunyenwe kwiseti yeeprism ezintathu sisiphumo sovavanyo.Ukuba elinye kumaxabiso alinganisiweyo amathandathu lingaphezulu kwe-±10% kumaxabiso aphakathi amathandathu, isiphumo kufuneka sipheliswe kuze kuthathwe amahlanu aseleyo amaxabiso athetha.Ukuba amaxabiso angaphezulu kwamahlanu alinganisiweyo angaphezulu komyinge wawo we-±10%, iseti yeziphumo ayiyi kuba semthethweni.
7, indlela yovavanyo lokulunga (80μm indlela yokuhlalutya isihluzo) GB1345-2005
7.1 Isixhobo: Isikrini sokuvavanya i-80μm, isixhobo sokuhlalutya isikrini esibi, ibhalansi (ixabiso lokwahlula alikho ngaphezu kwe-0.05g)
7.2 Inkqubo yokuvavanya: linganisa i-samente ye-25g, uyibeke kwi-sieve yoxinzelelo olubi, gubungela ikhava ye-sieve, uyibeke kwisiseko se-sieve, ulungise uxinzelelo olubi kwi-4000 ~ 6000Pa.Xa kuhlalutya uhlalutyo, ukuba kukho iqhotyoshelwe kwikhava yesikrini, unokunkqonkqoza ngobunono, ukuze isampuli iwe, emva kokuhlolwa, sebenzisa ibhalansi ukulinganisa intsalela yesikrini.
7.3 Ubalo lweziphumo Ipesenti eshiyekileyo yesihluzo sesamente ibalwa ngolu hlobo lulandelayo:
F ngu RS/W amaxesha 100
Apho: F — ipesenti yentsalela yesamente yesamente, %;
RS - Ubuninzi bentsalela yesikrini sesamente, G;
W - ubunzima besamente yesamente, G.
Isiphumo sibalwa kwi-0.1%.
Isampuli nganye iya kulinganiswa kwaye iisampulu ezimbini ziya kujongwa ngokwahlukileyo, kwaye ixabiso eliqhelekileyo leesampuli eziseleyo liya kuthathwa njengesiphumo sokuhlalutya kwesikrini.Ukuba impazamo epheleleyo yeziphumo ezimbini zokuhlola ingaphezulu kwe-0.5% (ukuba ixabiso elishiyekileyo lokuhlola lingaphezulu kwe-5.0%, linokubekwa kwi-1.0%), kufuneka kwenziwe olunye uvavanyo, kunye nenani le-arithmetic yeziphumo ezimbini ezifanayo. kufuneka ithathwe njengesiphumo sokugqibela.
8, ubumhlophe besamente emhlophe
Xa kusenziwa isampuli, ubumhlophe besamente kunye nombala kufuneka kulinganiswe ngokubonakalayo kwaye kuthelekiswe nobumhlophe besampulu.
Ixesha lokuposa: Dec-06-2021