Ni uruhe ruhare rwibikoresho bigumana amazi bivanze nifu ya gypsumu?
Igisubizo: guhomesha gypsumu, gypsumu ihujwe, cyping gypsum, gypsum putty nibindi bikoresho byifu yubaka birakoreshwa. Mu rwego rwo koroshya ubwubatsi, gypsum retarders yongerwaho mugihe cyumusaruro kugirango yongere igihe cyo kubaka gypsum. Retarder yongewemo kugirango ibuze inzira ya hydration ya gypsumu ya hemihydrate. Ubu bwoko bwa gypsum bugomba kubikwa kurukuta mugihe cyamasaha 1 kugeza kuri 2 mbere yuko yegerana, kandi ibyinshi murukuta bifite imiterere yo kwinjiza amazi, cyane cyane inkuta zamatafari, hiyongereyeho urukuta rwa beto ya Air, imbaho zidafite insimburangingo hamwe nibindi bikoresho bishya byurukuta, bityo rero gypsum igomba kuba ifite amazi kugirango ikumire igice kinini cyamazi atembera mumazi. hydration. Byuzuye, bitera gutandukana no gutobora ingingo hagati ya plaster hamwe nurukuta. Kwiyongera kubintu bigumana amazi nugukomeza ubuhehere buri muri gypsum, kugirango hamenyekane hydrasiyo ya gypsum slurry kuri interineti, kugirango habeho imbaraga zo guhuza. Ibikoresho bikoreshwa cyane mu kubika amazi ni ether ya selile, nka: methyl selulose (MC), hydroxypropyl methyl selulose (HPMC), hydroxyethyl methyl selulose (HEMC), nibindi.
Nuburyo ki bwo kubika amazi bushobora gutinza umuvuduko wa gypsumu kurwego rutandukanye, mugihe ingano ya retarder idahindutse, umukozi ugumana amazi arashobora guhagarika igenamigambi muminota 15-30. Kubwibyo, umubare wabadindiza urashobora kugabanuka muburyo bukwiye.
Niyihe dosiye ikwiye yo kugumana amazi mubikoresho bya gypsumu?
Igisubizo: Ibikoresho bigumana amazi bikoreshwa mubikoresho byifu yubaka nko guhomesha gypsumu, guhuza gypsumu, gypsum ya caulking, na gypsum putty. Kubera ko ubu bwoko bwa gypsumu buvanze na retarder, ikabuza uburyo bwo gufata amazi ya gypsumu ya hemihydrate, birakenewe ko hakorwa uburyo bwo gufata amazi kubutaka bwa gypsum kugirango hirindwe igice cyamazi kiri mumazi kwimukira kurukuta, bikaviramo kubura amazi hamwe n’amazi atuzuye mugihe gypsumu ikomye. Kwiyongera kubintu bigumana amazi nugukomeza ubuhehere buri muri gypsum, kugirango hamenyekane hydrasiyo ya gypsum slurry kuri interineti, kugirango habeho imbaraga zo guhuza.
Igipimo cyacyo muri rusange ni 0.1% kugeza 0.2% (bibarirwa kuri gypsumu), mugihe gypsum ikoreshwa mugikuta hamwe no gufata amazi akomeye (nka beto ya gaze ya gaze, imbaho za insimburangingo za perlite, inzitizi ya gypsumu, inkuta zamatafari, nibindi), kandi mugihe utegura gypsumu ihuza, gypsum ya gypsum, hejuru yububiko bwa 0%.
Ibikoresho bigumana amazi nka methyl selulose (MC) na hydroxypropyl methylcellulose (HPMC) ntibishobora gukonja, ariko bizabyara ibibyimba mugihe cyambere iyo bishonge mumazi. Ibikoresho bigumana amazi bigomba kubanza kuvangwa nifu ya gypsumu kugirango ikwirakwize. Tegura ifu yumye; ongeramo amazi hanyuma ukangure, reka uhagarare muminota 5, ongera wongere, ingaruka nibyiza. Muri iki gihe, hari ibicuruzwa bya selile bya selile bishobora gushonga mu mazi, ariko ntibigira ingaruka nke ku musaruro w’ifu yumye.
Nigute umukozi utarinda amazi ukina ibikorwa bitarinda amazi mumubiri wa gypsumu ukomye?
Igisubizo: Ubwoko butandukanye bwibikoresho bitarinda amazi bikoresha ibikorwa bitarinda amazi mumubiri wa gypsumu ukomye ukurikije uburyo butandukanye bwibikorwa. Ahanini birashobora kuvunagurwa muburyo bune bukurikira:
. Kurugero, saponifike ya sintetike ya fatty acide irimo C7-C9 hiyongereyeho, kandi urugero rukwiye rwihuta na ammonium borate yongewe icyarimwe.
(2) Gukora firime idafite amazi kugirango uhagarike imyenge myiza ya capillary mumubiri ukomeye. Kurugero, kuvanga paraffin emulsion, emulsiya ya asfalt, emosion ya rosin na paraffin-rosin ikomatanya emuliyoni, kunoza asifalt ikomatanya, nibindi.
. Kurugero, imiti itandukanye ya silicone yinjizwamo, harimo amavuta ya silicone atandukanye.
. Silicone ishingiye kuri solive iruta silikoni ishingiye kumazi, ariko iyambere ituma gaze ya gaze yumubiri ukomeye wa gypsumu yagabanutse.
Nubwo ibikoresho bitandukanye bitarinda amazi bishobora gukoreshwa mugutezimbere amazi yububiko bwibikoresho bya gypsumu muburyo butandukanye, gypsumu iracyari ibikoresho bikomeretsa ikirere, bidakwiranye n’ibidukikije byo hanze cyangwa igihe kirekire, kandi bikwiranye n’ibidukikije bigenda bihindagurika kandi bitose.
Ni ubuhe buryo bwo guhindura gypsumu n'umukozi utarinda amazi?
Igisubizo: Hariho uburyo bubiri bwingenzi bwibikorwa bya gypsum yamashanyarazi: kimwe nukwongera coefficente yoroshye mugukemura ibibazo, naho ubundi nukugabanya umuvuduko wamazi wibikoresho bya gypsumu. Kandi kugabanya kwinjiza amazi birashobora gukorwa mubice bibiri. Imwe muriyo ni ukongera ubukana bwa gypsumu ikomye, ni ukuvuga kugabanya iyinjizwa ry’amazi ya gypsumu mu kugabanya ububobere n’imiterere y’imiterere, kugira ngo irusheho guhangana n’amazi ya gypsumu. Ikindi ni ukongera ingufu zubuso bwumubiri wa gypsumu ukomanze, ni ukuvuga kugabanya amazi yinjira muri gypsumu bigatuma ubuso bwa pore bugira firime hydrophobique.
Ibikoresho bitarinda amazi bigabanya ubukana bigira uruhare mukuziba imyenge myiza ya gypsumu no kongera ubwuzuzanye bwumubiri wa gypsumu. Hariho ibintu byinshi bivangwa no kugabanya ububobere, nka: paraffin emulsion, emulsiya ya asfalt, emosioni ya rosin na paraffin asfalt ikomatanya. Ibi bikoresho bitarinda amazi bigira akamaro mukugabanya ubukana bwa gypsumu muburyo bukwiye bwo kuboneza, ariko mugihe kimwe, bigira n'ingaruka mbi kubicuruzwa bya gypsumu.
Ibisanzwe byangiza amazi bihindura ingufu zubutaka ni silicone. Irashobora gucengera ku cyambu cya buri pore, igahindura ingufu zubuso mu burebure runaka, bityo igahindura inguni yo guhuza n’amazi, bigatuma molekile y’amazi ihurira hamwe igakora ibitonyanga, ikabuza kwinjira mu mazi, ikagera ku ntego yo kwirinda amazi, kandi icyarimwe ikagumya guhumeka ikirere cya plasta. Ubwoko bwubwoko butandukanye bwokwirinda amazi burimo cyane cyane: sodium methyl siliconate, silicone resin, amavuta ya silicone ya emulisile, nibindi. Birumvikana ko uyu muti utarinda amazi bisaba ko diameter ya pore idashobora kuba nini cyane, kandi mugihe kimwe ntishobora kurwanya ubwinjira mumazi yumuvuduko mwinshi kandi ntishobora gukemura byimazeyo ibibazo byigihe kirekire bitarinda amazi nubushuhe bwamazi.
Abashakashatsi bo mu rugo bakoresha uburyo bwo guhuza ibikoresho kama n’ibikoresho kama, ni ukuvuga, bishingiye ku miti ya emulsiyasi y’amazi yangiza amazi yabonetse hamwe na emulisation ya alcool ya polyvinyl na acide stearic, hanyuma ukongeramo amabuye ya alum, naphthalenesulfonate aldehyde condensate Ubwoko bushya bwa gypsumu ikomatanya amazi ikorwa no guhuza amazi yumunyu. Gypsum ikora ibikoresho bitarinda amazi birashobora kuvangwa neza na gypsumu namazi, bikagira uruhare mubikorwa byo korohereza gypsumu, kandi bikagira ingaruka nziza zo kwirinda amazi.
Ni izihe ngaruka zibuza imiti itagira amazi ya silane kuri efflorescence muri minisiteri ya gypsumu?
Igisubizo:. Ingaruka zo kubuza silane kuri 0.4% silane nibyiza, kandi ingaruka zayo zo guhagarika zikunda guhagarara mugihe amafaranga arenze aya mafaranga.
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Igihe cyo kohereza: Ugushyingo-22-2022