Impembelelo yodaka lwesanti kwii-polycarboxylate superplasticizerihlala ibulala, ebonakala ngakumbi kunothotho lwe-naphthalene kunye ne-aliphatic superplasticizers. Xa umxholo wodaka usanda, ukusebenza kwekhonkrithi kuphuculwe ngokunyusa inanii-polycarboxylate superplasticizer, maxa wambi ngesiqingatha somgudu, yaye maxa wambi ukopha kuqala ngaphambi kokuba ulwelo lufikeleleke. Xa isiqulatho sodaka se-aggregate yesohlwayo sidlula i-5%, isantya sokunciphisa amanzi kwikhonkrithi exutywei-polycarboxylate superplasticizerziya kuhla, kwanaxa kunjalo
ulwelo luya kulahleka ngokupheleleyo, kwaye ugcino oludodobalayo luya kuba mbi. Kwimixholo yomgubo wamatye, kuyafuneka ukuba kwenziwe iimvavanyo kwisiza izihlandlo ezininzi ukulawula ngokufanelekileyo umxholo womgubo wamatye, ukuze ubuntununtunu bukwazi ukulawulwa ngokufanelekileyo, ulwelo lwekhonkrithi lunokuqinisekiswa, kunye nokusebenza ikhonkrithi inokuphuculwa.
Kwingxaki yangoku yesiqulatho sodaka, kukho izisombululo ezininzi eziqhelekileyo:
(1) Ukwandisa idosi okanye ukunyusa umlinganiselo we-arhente yokugcina i-slump-release-slump-release, kodwa ulawule isixa sokuthintela iingxaki ze-yellowing, ukopha, ukwahlula, ukuhlutha okuphantsi kunye nexesha lokubuyisela ikhonkrithi elide kakhulu;
(2) Lungisa umlinganiselo wesanti okanye wandise isixa sokungenisa umoya. Kwisiseko sokuqinisekisa ukusebenza kakuhle kunye namandla, ukunciphisa izinga lesanti okanye ukunyusa umthamo wokungenisa umoya ukufezekisa injongo yokunyusa amanzi asimahla kunye nodaka lwenkqubo yekhonkrithi. ukulungelelanisa iimpawu zekhonkrithi;
(3) Yongeza ngokufanelekileyo okanye utshintshe amacandelo ukusombulula ingxaki. Iimvavanyo zibonise ukuba ukongeza inani elifanelekileyo le-sodium metabisulfite, i-sodium thiosulfate, i-sodium hexametaphosphate, kunye ne-sodium sulfate kumnciphisi wamanzi kunokunciphisa impembelelo yodaka kwikhonkrithi ukuya kwinqanaba elithile.
Ngokuqinisekileyo, ezi ndlela zingentla azikwazi ukucombulula zonke iingxaki zodaka, kwaye umphumo wodaka kwi-concrete durability ifuna uphando olongezelelweyo, ngoko ke isisombululo esisisiseko kukunciphisa umxholo wodaka wezinto eziluhlaza.
Ixesha lokuposa: May-18-2022
