Ukumelana nokuhlakazeka kuyinkomba ebalulekile yobuchwepheshe yokukala ikhwalithi ye-anti-dispersant.I-Hydroxypropyl methyl celluloseiyinhlanganisela ye-polymer encibilika emanzini, eyaziwa nangokuthi i-resin encibilika emanzini noma i-polymer encibilika emanzini. Yandisa ukuqina kwengxube ngokwandisa i-viscosity yamanzi axubayo. Luhlobo lwezinto ze-polymer ezihlala emanzini, ezingancibilika emanzini bese zakha isixazululo noma uketshezi oluhlakazekayo. Ukuhlolwa kubonisa ukuthi lapho inani le-superplasticizer yesistimu ye-naphthalene landa, ukungezwa kwe-superplasticizer kuzonciphisa ukumelana kokuhlakazeka kwe-mortar entsha yesamente. Lokhu kungenxa yokuthi i-ejenti yokunciphisa amanzi esebenza kahle kakhulu ye-naphthalene uchungechunge ingeye-ejenti esebenzayo ebusweni, lapho i-ejenti yokunciphisa amanzi ingezwa ku-mortar, i-ejenti yokunciphisa amanzi ebusweni be-particle yesamente eqondiswe phezulu kwezinhlayiya zesamente eneshaja efanayo, isakhiwo se-flocculation sokuxosha sikagesi sezinhlayiya zesamente esakhiwe ngokuhlukanisa, ukugoqa isakhiwo sokukhululwa kwamanzi, kuzobangela ukulahlekelwa kwengxenye yesamente. Ngesikhathi esifanayo, kutholakala ukuthi ngokwanda kokuqukethwe kwe-HPMC, ukumelana nokuhlakazeka kwe-mortar entsha yesamente kungcono futhi kungcono.
Izici zamandla zekhonkrithi:
Ukuhlanganiswa kwekhonkrithi okungasabalali ngaphansi kwamanzi kwe-HPMC kwasetshenziswa kubunjiniyela besisekelo sebhuloho lomgwaqo omkhulu, kanti izinga lamandla omklamo lalingu-C25. Ngemva kokuhlolwa okuyisisekelo, umthamo wekhonkrithi ungama-400kg, i-compound mixed silica fume ingu-25kg/m3,I-HPMCIsilinganiso esiphezulu singu-0.6% wesilinganiso sikasimende, isilinganiso sikasimende samanzi singu-0.42, izinga lesihlabathi lingu-40%, isivuno se-naphthalene esisebenza kahle kakhulu sokunciphisa amanzi singu-8% wesilinganiso sikasimende, isampula yekhonkrithi emoyeni ingama-28d, amandla ajwayelekile angama-42.6MPa, Amandla ajwayelekile ekhonkrithi ethelwe ngaphansi kwamanzi enokuphakama okuwa okungu-60mm emanzini angama-36.4mpa izinsuku ezingama-28, kanti isilinganiso samandla ekhonkrithi eyakhiwe emanzini kanye nekhonkrithi eyakhiwe emoyeni singama-84.8%, okubonisa umphumela obalulekile.
1. Ukwengezwa kwe-HPMC kunomphumela osobala wokubambezela ingxube ye-mortar. Ngokwanda komthamo we-HPMC, isikhathi sokubeka i-mortar siyandiswa ngokulandelana. Ngaphansi kwesimo esifanayo somthamo we-HPMC, isikhathi sokubeka i-mortar engaphansi kwamanzi side kunesomoya. Lesi sici siwusizo ekupompeni ukhonkolo ongaphansi kwamanzi.
2, ixutshwe ne-hydroxypropyl methyl cellulose ye-mortar entsha yesimende inokuhlangana okuhle, cishe akukho mkhuba wokopha.
3, umthamo we-HPMC kanye nesidingo samanzi esidaka kuqala sehle sabe sesikhuphuka kakhulu.
4. Ukufakwa kwesinciphisi samanzi kuthuthukisa inkinga yokwanda kwesidingo samanzi se-mortar, kodwa kumele ilawulwe ngokufanele, ngaphandle kwalokho ngezinye izikhathi kuzonciphisa ukumelana kokusabalala kwamanzi kwe-mortar entsha ye-samente.
5. Kunomehluko omncane esakhiweni phakathi kwezibonelo ze-slurry ze-HPMC ezixutshwe ne-samente kanye nezibonelo ezingenalutho, futhi kunomehluko omncane esakhiweni kanye nokuqina phakathi kwezibonelo ze-samente ezithululwe ngamanzi kanye nezibonelo ze-slurry ze-samente ezithululwe ngomoya. Isampula yokubumba ngaphansi kwamanzi engu-28d ikhululekile kancane. Isizathu esiyinhloko ukuthi ukwengezwa kwe-HPMC kunciphisa kakhulu ukulahleka kanye nokuhlakazeka kwe-samente ngesikhathi sokuthululwa kwamanzi, kodwa futhi kunciphisa izinga lokuminyana kwe-samente. Kuphrojekthi, ngaphansi kwesimo sokuqinisekisa umphumela wokungahlakazeki ngaphansi kwamanzi, inani lokuxuba le-HPMC liyancipha ngangokunokwenzeka.
6, engezaI-HPMCngaphansi kwamanzi akusabalalisi ukuhlanganiswa kwekhonkrithi, kulawula inani lamandla amahle, iphrojekthi yokuhlola ikhombisa ukuthi isilinganiso samandla okwenza ikhonkrithi emanzini kanye nokwenziwa emoyeni singama-84.8%, umphumela ubaluleke kakhulu.
Isikhathi sokuthunyelwe: Ephreli-25-2024