Hydroxypropyl methylcellulose ether kumiterere yisazi yivu

Hakozwe ubushakashatsi ku ngaruka za hydroxypropyl methylcellulose ether ku miterere y’isazi y’ivu, kandi hasesenguwe isano iri hagati y’ubucucike bw’amazi nimbaraga zo kwikomeretsa. Ibisubizo by'ibizamini byerekana ko kongeramo hydroxypropyl methylcellulose ether kugirango iguruka ivu ivu irashobora kunoza cyane imikorere yo gufata amazi ya minisiteri, ikongerera igihe cyo guhuza minisiteri, kandi ikagabanya ubwinshi bwamazi nimbaraga zo kwikuramo za minisiteri. Hariho isano ryiza hagati yubucucike butose nimbaraga za 28d zo kwikuramo. Ukurikije imiterere izwi yubushuhe, 28d imbaraga zo kwikuramo zirashobora kubarwa ukoresheje formula ikwiye.

Amagambo y'ingenzi:ivu; selile ether; kubika amazi; imbaraga zo guhonyora; ihuriro

Kugeza ubu, ivu ryisazi ryakoreshejwe cyane mubwubatsi. Ongeraho umubare munini w ivu ryisazi muri minisiteri ntishobora gusa kunoza imiterere yubukanishi nigihe kirekire cya minisiteri, ariko kandi igabanya igiciro cya minisiteri. Nyamara, isazi yivu yerekana isazi idahagije, kuburyo buryo bwo kunoza amazi ya minisiteri byabaye ikibazo cyihutirwa gukemurwa. Cellulose ether ni ihuriro ryiza cyane rikoreshwa mugihugu ndetse no mumahanga. Birakenewe gusa kongerwaho muke kugirango bigire ingaruka zikomeye kubipimo ngenderwaho nko gufata amazi nimbaraga zo kwikuramo za minisiteri.

1. Ibikoresho bito nuburyo bwo gupima

1.1 Ibikoresho bibisi

Isima ni P.·O 42.5 urwego rusanzwe rwa sima ya Portland yakozwe nuruganda rwa sima rwa Hangzhou Meiya; isazi ivu ni urwegoⅡivu; umucanga ni umucanga usanzwe wo hagati ufite modulus nziza ya 2,3, ubwinshi bwa 1499kg·m-3, hamwe nubushuhe bwa 0,14%, ibyondo 0,72%; hydroxypropyl methyl selulose ether (HPMC) ikorwa na Shandong Heda Co., Ltd., ikirango ni 75HD100000; kuvanga amazi ni amazi ya robine.

1.2 Gutegura Mortar

Iyo uvanze selile ya ether yahinduwe, banza uvange HPMC na sima hanyuma uguruka ivu neza, hanyuma wumishe kuvanga n'umucanga kumasegonda 30, hanyuma ushyiremo amazi hanyuma uvange bitarenze amasegonda 180.

1.3 Uburyo bwo kwipimisha

Ihame, ubucucike butose, gusiba no kugena igihe cya minisiteri ivanze bishya bigomba gupimwa hakurikijwe amabwiriza abigenga muri JGJ70-90 “Uburyo bwibanze bwo Kwipimisha Uburyo bwo Kwubaka Mortar”. Kugumana amazi ya minisiteri bigenwa hakurikijwe uburyo bwo gupima uburyo bwo gufata amazi ya minisiteri kumugereka A wa JG / T 230-2007 “Mortar ivanze yiteguye”. Ikizamini cyo gukomeretsa imbaraga gifata 70.7mm x 70.7mm x 70.7mm cube munsi yikizamini. Ikizamini cyakozwe cyakize ku bushyuhe bwa (20±2)°C kumasaha 24, na nyuma yo kumanuka, ikomeza gukira mubidukikije bifite ubushyuhe bwa (20±2)°C hamwe nubushuhe bugereranije buri hejuru ya 90% kugeza kumyaka yagenwe, ukurikije JGJ70-90 "Kubaka Mortar Basic imikorere yuburyo bwibanze" kugena imbaraga zayo zo kwikuramo.

2. Ibisubizo by'ibizamini n'isesengura

Ubucucike butose

Birashobora kugaragara uhereye kumubano uri hagati yubucucike nubunini bwa HPMC ko ubwinshi bwamazi bugabanuka buhoro buhoro hamwe no kwiyongera kwa HPMC. Iyo ingano ya HPMC ari 0,05%, ubwinshi bwamazi ya minisiteri ni 96.8% bya minisiteri. Iyo ingano ya HPMC ikomeje kwiyongera, Kugabanuka umuvuduko wubucucike bwihuta birihuta. Iyo ibiri muri HPMC ari 0,20%, ubucucike butose bwa minisiteri ni 81.5% gusa bya minisiteri. Ibi biterwa ahanini ningaruka zo guhumeka HPMC. Umwuka mwinshi watangijwe byongera ubukana bwa minisiteri kandi bigabanya ubwuzuzanye, bigatuma igabanuka ryubunini bwa minisiteri.

2.2 Gushiraho igihe

Birashobora kugaragara uhereye kumubano uri hagati yigihe coagulation nubunini bwa HPMC ko igihe coagulation kigenda cyiyongera. Iyo dosiye ari 0,20%, igihe cyo gushiraho cyiyongera 29.8% ugereranije na minisiteri yerekana, igera kuri 300min. Birashobora kugaragara ko iyo dosiye ari 0,20%, igihe cyo gushiraho gifite impinduka nini. Impamvu nuko L Schmitz n'abandi. bizere ko molekile ya selulose ether yibanda cyane kubicuruzwa bitanga amazi nka cSH na hydroxide ya calcium, kandi ntibikunze kwamamazwa mugice cyambere cya minerval ya clinker. Mubyongeyeho, kubera kwiyongera kwijimye ryumuti wa pore, selile ya selile iragabanuka. Kugenda kwa ion (Ca2 +, so42-…) mugisubizo cya pore bikomeza kudindiza inzira ya hydration.

2.3 Gushyira hamwe no gufata amazi

Urwego rwombi rwo gusiba no gufata amazi birashobora kuranga ingaruka zo gufata amazi ya minisiteri. Uhereye ku isano iri hagati yurwego rwa delamination nubunini bwa HPMC, urashobora kubona ko urwego rwo gusibanganya rwerekana kugabanuka uko umubare wa HPMC wiyongera. Iyo ibikubiye muri HPMC ari 0,05%, urwego rwo gusiba rugabanuka cyane, byerekana ko mugihe ibirimo fibre ether ari bito, urwego rwo gusiba rushobora kugabanuka cyane, ingaruka zo gufata amazi zirashobora kunozwa, hamwe nakazi kandi imikorere ya minisiteri irashobora kunozwa. Urebye isano iri hagati yumutungo wamazi nubunini bwa HPMC, uko umubare wa HPMC wiyongera, gufata amazi nabyo bigenda biba byiza. Iyo igipimo kiri munsi ya 0.15%, ingaruka zo gufata amazi ziyongera cyane, ariko iyo dosiye igeze kuri 0,20%, ingaruka zo gufata amazi zarahindutse cyane, kuva 90.1% mugihe dosiye ari 0.15%, kugeza 95%. Umubare wa HPMC ukomeje kwiyongera, kandi imikorere yubwubatsi bwa minisiteri itangira kwangirika. Kubwibyo, urebye imikorere yo gufata amazi nibikorwa byubwubatsi, umubare ukwiye wa HPMC ni 0,10% ~ 0,20%. Isesengura ryuburyo bwo gufata amazi: Cellulose ether ni polymer yumubiri wa elegitoronike polymer, igabanijwemo ionic na non-ionic. HPMC ni selile itari ionic selile hamwe nitsinda rya hydrophilique, hydroxyl group (-OH) hamwe na ether bond (-0-1) muburyo bwimiterere. Iyo zishongeshejwe mumazi, atome ya ogisijeni mumatsinda ya hydroxyl hamwe na ether hamwe namazi Molecules ifatanya gukora imigozi ya hydrogène, bigatuma amazi atakaza amazi, kandi amazi yubusa ntaba agifite ubuntu, bityo bikagera ku ngaruka zo gufata amazi no kubyimba.

2.4 Imbaraga zo guhonyora

Uhereye ku isano iri hagati yimbaraga zo kwikuramo nubunini bwa HPMC, urashobora kubona ko hamwe niyongera ryumubare wa HPMC, imbaraga zo kwikuramo 7d na 28d zerekanaga ko igabanuka ryagabanutse, byatewe ahanini no kwinjiza umubare munini yumuyaga mwinshi na HPMC, wongereye cyane ububobere bwa minisiteri. kwiyongera, bigatuma imbaraga zigabanuka. Iyo ibirimo ari 0,05%, imbaraga zo kwikuramo 7d zigabanuka cyane, imbaraga zigabanukaho 21.0%, naho 28d yo kwikuramo igabanukaho 26,6%. Birashobora kugaragara uhereye kumurongo ko ingaruka za HPMC kumbaraga zo guhonyora zigaragara cyane. Iyo dosiye ari nto cyane, izagabanuka cyane. Kubwibyo, mubikorwa bifatika, dosiye yayo igomba kugenzurwa no gukoreshwa hamwe na defoamer. Iperereza ku mpamvu, Guan Xuemao n'abandi. bizere ko ubanza, iyo selile ya selile yongewe kuri minisiteri, polymer ihindagurika mumyenge ya minisiteri yiyongera, kandi izo polimeri zoroshye na pore ntibishobora gutanga ubufasha bukomeye mugihe ikizamini cyo guhagarika ikizamini. Matrice yibigize igabanutse cyane, bityo igabanye imbaraga zo kwikuramo za minisiteri; icya kabiri, kubera ingaruka zo gufata amazi ya selile ya ether, nyuma yo gukora ikizamini cya minisiteri, amazi menshi aguma muri minisiteri, kandi igipimo cy’amazi-sima kiri munsi yacyo kitariho Ibyo ni binini cyane, bityo imbaraga zo kwikuramo ya minisiteri izagabanuka cyane.

2.5 Isano riri hagati yimbaraga zo kwikuramo nubucucike butose

Birashobora kugaragara uhereye kumurongo wubusabane hagati yimbaraga zogukomeretsa nubucucike butose ko nyuma yumurongo uhuza ingingo zose zishusho, ingingo zihuye zikwirakwizwa neza kumpande zombi zumurongo uhuza, kandi hariho isano ryiza hagati yubucucike butose no kwikuramo imbaraga zumutungo, hamwe nubucucike butose biroroshye kandi byoroshye kubipima, kubwibyo imbaraga zo guhonyora za minisiteri 28d irashobora kubarwa binyuze mumurongo washyizweho ugereranije. Ikigereranyo gikwiranye cyerekanwe muri formula (1), R.²= 0.9704. Y = 0.0195X-27.3 (1), aho, y nimbaraga za 28d zo gukomeretsa za minisiteri, MPa; X nubucucike butose, kg m-3.

3. Umwanzuro

HPMC irashobora kunoza ingaruka zo gufata amazi ya firimu ivu kandi ikongerera igihe cyo gukora. Muri icyo gihe, kubera kwiyongera kwinshi kwa minisiteri, ubwinshi bwayo nimbaraga zo kwikuramo bizagabanuka cyane, bityo dosiye ikwiye igomba guhitamo mubisabwa. Imbaraga 28d zo gukomeretsa za minisiteri zifitanye isano ryiza nubucucike butose, kandi imbaraga za 28d zo kwikuramo zishobora kubarwa mugupima ubwinshi bwamazi, bufite agaciro gakomeye mugucunga ubuziranenge bwa minisiteri mugihe cyo kubaka.