Mu myaka yashize, hamwe niterambere ryiterambere ryiterambere rya tekinoroji yo hanze, iterambere ryikomeza ryikoranabuhanga rya selile, hamwe nibyiza biranga HPMC ubwayo, HPMC yakoreshejwe cyane mubikorwa byubwubatsi.
Kugirango turusheho gucukumbura uburyo bwibikorwa hagati ya HPMC nibikoresho bishingiye kuri sima, iyi mpapuro yibanze ku kunoza imikorere ya HPMC ku miterere ihuriweho n’ibikoresho bishingiye kuri sima.
igihe cyo kwambara
Igihe cyo gushiraho beto gifitanye isano cyane cyane nigihe cyo gushyiraho sima, kandi igiteranyo ntigifite uruhare runini, kubwibyo rero igihe cyo gushiraho minisiteri gishobora gukoreshwa aho kwiga ingaruka za HPMC mugihe cyagenwe cyo kuvanga beto zidashobora gukwirakwira, kubera ko igihe cyagenwe cya minisiteri cyatewe namazi Kubwibyo, kugirango dusuzume ingaruka za HPMC mugihe cyagenwe na minisiteri, ni ngombwa gukosora igipimo cya minisiteri.
Nk’uko ubushakashatsi bwabigaragaje, iyongerwaho rya HPMC rifite ingaruka zikomeye zo kudindiza imvange ya minisiteri, kandi igihe cyo gushyiraho minisiteri kiraramba hamwe no kwiyongera kwa HPMC. Mubintu bimwe bya HPMC, minisiteri yubatswe mumazi yihuta kuruta minisiteri ikorwa mukirere. Igenamiterere ryigihe cyo kugereranya ni kirekire. Iyo upimye mumazi, ugereranije nicyitegererezo cyambaye ubusa, igihe cyo gushiraho minisiteri ivanze na HPMC gitinda kumasaha 6-18 yo gutangira kwambere namasaha 6-22 yo gushiraho bwa nyuma. Kubwibyo, HPMC igomba gukoreshwa ifatanije nihuta.
HPMC ni polymer nyinshi cyane ifite imiterere yumurongo wa macromolecular hamwe nitsinda rya hydroxyl kumurwi ukora, rishobora gukora imigozi ya hydrogène hamwe na molekile zivanze no kongera ubwiza bwamazi avanze. Iminyururu miremire ya HPMC izakurura, itume molekile ya HPMC ifatana hamwe kugirango ibe imiterere y'urusobekerane, gupfunyika sima no kuvanga amazi. Kubera ko HPMC ikora imiterere y'urusobekerane rusa na firime kandi igapfunyika sima, bizarinda neza ihindagurika ry’amazi muri minisiteri, kandi bibangamire cyangwa bidindiza umuvuduko w’amazi wa sima.
Amaraso
Ikintu cyo kuva amaraso ya minisiteri isa nkiya beto, bizatera gutuza gukomeye, bikavamo kwiyongera k'umubare w'amazi-sima w'igice cyo hejuru cya slurry, bigatuma igabanuka rinini rya plastike ryurwego rwo hejuru rwa slurry mucyiciro cya mbere, ndetse rikanacika, ndetse n'imbaraga z'ubuso bw'ubuso bugereranije intege nke.
Iyo igipimo kiri hejuru ya 0.5%, mubyukuri nta kintu cyo kuva amaraso. Ibi ni ukubera ko iyo HPMC ivanze muri minisiteri, HPMC iba ifite firime nogukora imiyoboro, hamwe na adsorption yitsinda rya hydroxyl kumurongo muremure wa macromolecules bituma sima no kuvanga amazi muri minisiteri bigira flokculasiyo, bigatuma imiterere ihamye ya minisiteri. Nyuma yo kongeramo HPMC kuri minisiteri, ibyuka byinshi byigenga bito bizashyirwaho. Ibibyuka byo mu kirere bizagabanywa neza muri minisiteri kandi bibangamire gushira hamwe. Imikorere ya tekiniki ya HPMC igira uruhare runini kubikoresho bishingiye kuri sima, kandi ikoreshwa kenshi mugutegura ibikoresho bishya bishingiye kuri sima nkibikoresho byumye byumye na polymer mortar, kuburyo bifite amazi meza no kubika plastike.
Amazi ya Mortar
Iyo ingano ya HPMC ari nto, igira uruhare runini kubisabwa n'amazi ya minisiteri. Kubijyanye no gukomeza igipimo cyo kwaguka cya minisiteri mishya ahanini ni kimwe, ibirimo HPMC hamwe n’amazi y’amazi ya minisiteri ihinduka mu murongo umwe mu gihe runaka, kandi amazi y’amazi abanza kugabanuka hanyuma akiyongera ku buryo bugaragara. Iyo umubare wa HPMC uri munsi ya 0,025%, hamwe no kwiyongera kwinshi, amazi ya minisiteri agabanuka kurwego rumwe rwo kwaguka, ibyo bikaba byerekana ko iyo umubare wa HPMC ari muto, bigira ingaruka zo kugabanya amazi kuri minisiteri, kandi HPMC igira ingaruka zo guhumeka ikirere. Hano hari umubare munini wimyuka mito yigenga yigenga muri minisiteri, kandi ibyo byuka byo mu kirere bikora nk'amavuta yo kunoza amazi ya minisiteri. Iyo dosiye irenze 0.025%, amazi ya minisiteri yiyongera hamwe no kwiyongera kwa dosiye. Ni ukubera ko imiyoboro y'urusobe rwa HPMC iruzuye, kandi ikinyuranyo hagati ya floc kumurongo muremure wa molekile kigufi, kikaba gifite ingaruka zo gukurura no guhuriza hamwe, kandi bikagabanya umuvuduko wa minisiteri. Kubwibyo, mugihe urwego rwo kwaguka rusa cyane, ibicucu byerekana ubwiyongere bwamazi akenewe.
01. Ikizamini cyo kurwanya ikwirakwizwa:
Kurwanya-gutatanya nigipimo cyingenzi cya tekiniki yo gupima ubuziranenge bwibikorwa byo kurwanya. HPMC ni amazi ya elegitoronike ya polymer, azwi kandi nka resin-soluble resin cyangwa polymer-soluble polymer. Yongera ubudahangarwa bwuruvange mukongera ubwiza bwamazi avanze. Nibikoresho bya hydrophilique polymer bishobora gushonga mumazi kugirango bibe igisubizo. cyangwa gutatanya.
Ubushakashatsi bwerekana ko iyo ubwinshi bwa naphthalene bushingiye ku buhanga buhanitse bwa superplasticizer bwiyongereye, hiyongereyeho superplasticizer bizagabanya kurwanya ikwirakwizwa rya sima ivanze. Ni ukubera ko naphthalene ishingiye ku kugabanya amazi meza cyane igabanya amazi. Iyo kugabanya amazi byongewe kuri minisiteri, kugabanya amazi bizaba byerekejwe hejuru yubutaka bwa sima kugirango ubuso bwa sima bugire umushahara umwe. Uku kwanga amashanyarazi gutuma uduce twa sima dukora Imiterere ya flocculation ya sima irasenywa, hanyuma amazi apfunyitse muri iyo miterere ararekurwa, bizatera igihombo cya sima. Muri icyo gihe, usanga hamwe no kwiyongera kwa HPMC, kurwanya ikwirakwizwa rya sima ya sima nshya bigenda byiyongera kandi byiza.
02. Imbaraga ziranga ibintu bifatika:
Mu mushinga wicyitegererezo, HPMC mumazi yo mumazi adashobora gukwirakwizwa hifashishijwe beto, kandi igipimo cyimbaraga cyari C25. Ukurikije ikizamini cyibanze, ingano ya sima ni 400kg, umwotsi wa silika wongeyeho ni 25kg / m3, umubare mwiza wa HPMC ni 0,6% byamafaranga ya sima, igipimo cyamazi-sima ni 0.42, igipimo cyumucanga ni 40%, naho umusaruro wa naphthalene ushingiye kumurengera muke ni 28% ugereranije ni 28% ya beto yo mumazi ifite uburebure bwa 60mm ni 36.4MPa, naho igipimo cyingufu za beto zakozwe mumazi na beto yakozwe nikirere ni 84.8%, ingaruka ni nyinshi.
33. Ubushakashatsi bwerekana:
(1) Kwiyongera kwa HPMC bifite ingaruka zigaragara zo kudindiza imvange ya minisiteri. Hamwe no kwiyongera kwa HPMC, igihe cyo gushiraho minisiteri cyongerewe uko bikurikirana. Mubintu bimwe bya HPMC, minisiteri ikozwe mumazi irihuta kuruta iyakozwe mwikirere. Igenamiterere ryigihe cyo kugereranya ni kirekire. Iyi mikorere ni ingirakamaro mu kuvoma beto yo mumazi.
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(3) Ingano ya HPMC hamwe n’amazi ya minisiteri yagabanutse mbere hanyuma yiyongera ku buryo bugaragara.
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. Icyitegererezo cyakozwe munsi yamazi muminsi 28 ni gito. Impamvu nyamukuru nuko iyongerwaho rya HPMC rigabanya cyane gutakaza no gutatanya sima mugihe usutse mumazi, ariko kandi bikagabanya ubwuzuzanye bwamabuye ya sima. Mu mushinga, hashingiwe ku kwemeza ingaruka zo kudatatanya munsi y’amazi, dosiye ya HPMC igomba kugabanuka bishoboka.
. Umushinga w'icyitegererezo urerekana ko igipimo cy'imbaraga za beto zakozwe n'amazi na beto ikozwe mu kirere ari 84.8%, kandi ingaruka ni nini cyane.
Igihe cyo kohereza: Gicurasi-06-2023