1. Umxholo wesifundo kunye nobubanzi besicelo
Le ndlela ichaza izixhobo kunye namanyathelo okusebenza ekumiseleni ukuguquguquka kodaka lwesamente.
Le ndlela isetyenziswa ekumiselweni kodaka fluidity uthuthu lwentaba-mlilo Portland isamente, idityanisiwe Portland isamente, eqhelekileyo Portland isamente exutywe nothuthu lwentaba-mlilo, slag Portland isamente kunye nezinye iintlobo zesamente ezimiselwe ukusebenzisa le ndlela.
2. Imigangatho yereferensi
I-GB177 indlela yokuvavanya amandla odaka lwesamente
GB178 Isanti esemgangathweni yovavanyo lwamandla esamente
I-JBW 01-1-1 isampuli esemgangathweni yokukhupha udaka lwesamente
3. Indlela yokufumanisa isantya sokunciphisa amanzi ngodaka lulandelayo:
3.1 Izixhobo kunye nezixhobo
A. Umxube wodaka;
B. Itafile yokutsiba (ipleyiti yeglasi etyebileyo eyi-5mm kufuneka yongezwe);
C. Cylindrical ramming bar: yenziwe ngezinto zetsimbi, ububanzi 20mm, ubude malunga 185mm;
D. Isigubungelo sokungunda setyhula secone esinqunqiweyo kunye nesigqubuthelo somngundo: ubungakanani bokungunda obunqamlekileyo bekhowuni esisetyhula, ubude yi-60±0.5mm, idiameter ephezulu φ 70±0.5mm, idiameter esezantsi eyi-100±0.5mm, isigqubuthelo sokungunda kufuneka sihambelane nesingundo esisikiweyo sesetyhula, isigqubuthelo sentsimbi esicoliweyo kunye nesigqubuthelo sentsimbi;
E. Umlawuli (uluhlu lokulinganisa i-300mm) okanye ii-calipers ezinoluhlu lokulinganisa i-300mm;
F. i-spatula.
G. Ibhalansi yeziyobisi (ubunzima be-1000g, ukuva i-1g).
3.2. Inkqubo yovavanyo
3.2.1 Ukulinganisa ukusetyenziswa kwamanzi ngodaka lwereferensi
A. Viyisha i-300g yesamente kunye ne-750g yesanti eqhelekileyo kwaye uzigalele embizeni yokuxuba, qala umxube, ugalele amanzi ngokucothayo emva kokuxuba i-5s, kwaye wongeze phakathi kwe-30s. Yeka ukuvuselela i-3min emva kokuqala umatshini. Khulula udaka kwiincakuba kwaye ususe i-pan yokuvuselela.
B. Ekuxubeni udaka ngaxeshanye, ngelaphu elimanzi zosula itheyibhile yokutsiba, intonga yeramming, i-cone esikiweyo engqukuva kunye nesigqubuthelo sodonga lwangaphakathi, kwaye uzibeke kumbindi wepleyiti yeglasi, egqunywe ngelaphu elimanzi.
C. Udaka oluxubeneyo luhlulwe ngokukhawuleza lube ngamaleko amabini kubumba, umaleko wokuqala ufakwe kwi-cone ukungunda malunga nesibini kwisithathu esiphakamileyo, kunye ne-ramming bar ukusuka emphethweni ukuya kwiziko elifakwe ngokulinganayo ramming amaxesha alishumi elinesihlanu, emva koko ilayishwe umaleko wesibini wodaka, efakwe malunga neesentimitha ezimbini phezulu kunomngundo ojikelezayo, intonga efanayo ye-cylindrical rod fifteen. Xa ulayisha isanti kunye ne-ramming, cofa i-truncate cone die ngesandla ukunqanda intshukumo.
D. Emva tamping, khulula isigqubuthelo ngundo, sebenzisa spatula ukukhuhla udaka oluphezulu kunomngundo truncated cone setyhula kwaye wosule sicaba, ngoko ngobunono uphakamise ukungunda setyhula ngokuthe nkqo phezulu. Xuba izandla ngokukruneka kwevili ukwenza itafile yokutsiba itsibe amashumi amathathu ngesantya esinye ngomzuzwana.
E. Emva kokubetha, sebenzisa ii-calipers ukulinganisa i-diameter ye-diffusion ye-mortar bottom, kwaye uthathe ixabiso le-avareji yeedayamitha ezimbini ze-perpendicular enye kwenye njenge-diffusion yodaka xa kusetyenziswa amanzi, echazwe kwi-mm. Xa ireferensi yodaka yi-140±5mm, ukusetyenziswa kwamanzi kusetyenziso lwamanzi lwereferensi yodaka lwereferensi.
3.2.2 Ngokwendlela ye-3.2.1, ukusetyenziswa kwamanzi omdaka kunye ne-arhente yokunciphisa amanzi kufikelele kwi-140±5mm.
3.3. Izinga lokunciphisa amanzi odaka olucociweyo lubalwa ngolu hlobo lulandelayo:
Izinga lokunciphisa amanzi omdaka (%) = (W0-W1) / W0 × 100
Apho, w0 - ukusetyenziswa kwamanzi (g) xa ukusasazwa kodaka lwereferensi yi-140±5mm;
I-W1 - Ukusetyenziswa kwamanzi (g) xa ukusasazwa kodaka kunye ne-arhente yokunciphisa amanzi yi-140±5mm.
Ixabiso lezinga lokunciphisa amanzi lixabiso le-arithmetic elithetha ngeesampulu ezintathu.
Ixesha lokuposa: Apr-25-2024