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 slurry bugomba kubikwa kurukuta mugihe cyamasaha 1 kugeza kuri 2 mbere yuko yegerana, kandi inkuta nyinshi zifite imiterere yo kwinjiza amazi, cyane cyane inkuta zamatafari, hiyongereyeho urukuta rwa beto ya Air, imbaho zidafite insimburangingo nibindi bishya bifite uburemere bworoshye ibikoresho byo ku rukuta, bityo gypsum slurry igomba kugumana amazi kugirango irinde igice cyamazi muri slurry kwimukira kurukuta, bikaviramo kubura amazi mugihe gypsum yihuta kandi idahagije 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 gufata amazi ni selile ya selile, nka: methyl selulose (MC), hydroxypropyl methyl selulose (HPMC), hydroxyethyl methyl selulose (HEMC), nibindi. ifu yisi idasanzwe, nibindi birashobora no gukoreshwa mugutezimbere imikorere yamazi.
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 inzira ya hydrata ya hemihydrate gypsum, birakenewe ko hakorwa uburyo bwo gufata amazi kubutaka bwa gypsum kugirango hirindwe igice cyamazi mumazi yimuka kurukuta, bikavamo ibura ryamazi hamwe namazi atuzuye mugihe gypsum slurry ikomantaye. 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 mugukuta hamwe no gufata amazi akomeye (nka beto ya gaz, ibyuma bya perlite, insimburangingo ya gypsumu, inkuta zamatafari, nibindi), kandi Mugihe utegura guhuza gypsumu, gypsum ya caulking, gypsumu yohomesha hejuru cyangwa hejuru yoroheje, umubare wibikoresho bigumana amazi bigomba kuba binini (muri rusange 0.2% kugeza 0.5%).
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 ibintu 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 birakwiriye gusa kubidukikije bigenda bisimburana. ibihe bitose kandi byumye.
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 cyobo, igahindura ingufu zubuso mu burebure runaka, bityo igahindura inguni ihuza amazi, bigatuma molekile zamazi ziteranya hamwe zigakora ibitonyanga, bikabuza kwinjira mumazi, bikagera ku ntego yo kwirinda amazi, kandi icyarimwe ukomeze ikirere cyoguhumeka neza. Ubwoko bwubu bwoko bwibikoresho bitarinda amazi harimo: 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 kwihanganira kwinjira mu mazi y’umuvuduko, kandi ntibishobora gukemura byimazeyo ibibazo byigihe kirekire bitarinda amazi nubushuhe bwibicuruzwa bya gypsumu.
Abashakashatsi bo mu rugo bakoresha uburyo bwo guhuza ibikoresho kama n’ibikoresho kama, ni ukuvuga, bishingiye ku miti ya emulsiyasi y’amazi y’amazi yabonetse hamwe no gufatanya na alcool ya polyvinyl na aside stearic, no kongeramo ibuye rya alum, naphthalenesulfonate aldehyde condensate Ubwoko bushya bwa gypsumu ikomatanya amazi. umukozi ukorwa muguhuza umunyu utarinda amazi. 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.
.
. -vanga ibikoresho byo kubaka.
Igihe cyo kohereza: Ugushyingo-22-2022