Mhedzisiro yehydroxyethyl cellulose ether pane yekutanga hydration yeCSA simende

Migumisiro yehydroxyethyl cellulose (HEC)uye yakakwirira kana yakaderera substitution hydroxyethyl methyl cellulose (H HMEC, L HEMC) pane yekutanga hydration process uye hydration zvigadzirwa zve sulfoaluminate (CSA) simenti zvakadzidzwa. Zvigumisiro zvakaratidza kuti zvakasiyana-siyana zveL-HEMC zvinogona kukurudzira hydration yeCSA simenti mu 45.0 min ~ 10.0 h. Ese ese matatu cellulose ethers akanonoka hydration yekuparara kwe simenti uye shanduko nhanho yeCSA kutanga, uye ndokusimudzira iyo hydration mukati me2.0 ~ 10.0 h. Kuiswa kweboka re methyl kwakawedzera simba rekusimudzira hydroxyethyl cellulose ether pane hydration yeCSA simenti, uye L HEMC yakanga ine simba rakasimba rekusimudzira; Mhedzisiro ye cellulose ether ine zvinotsiva zvakasiyana uye madhigirii ekutsiva pane zvigadzirwa zve hydration mukati me12.0 h pamberi pe hydration zvakasiyana zvakanyanya. HEMC ine simba rakasimba rekusimudzira pane zvigadzirwa zve hydration kupfuura HEC. L HEMC yakagadziridzwa CSA simende slurry inogadzira yakanyanya calcium-vanadite uye aluminium gum pa 2.0 uye 4.0 h ye hydration.
Mashoko anokosha: sulfoaluminate simenti; Cellulose ether; Substitutent; Degree rekutsiva; Hydration process; Hydration chigadzirwa

Sulfoaluminate (CSA) simende ine anhydrous calcium sulfoaluminate (C4A3) uye boheme (C2S) seyakanyanya clinker mineral ine zvakanakira kuomesa nekukurumidza uye simba rekutanga, anti-chando uye anti-permeability, yakaderera alkalinity, uye yakaderera kupisa kupisa mu kugadzirwa, nekukuya nyore kwe clinker. Inoshandiswa zvakanyanya mukumhanyisa kugadzirisa, anti-permeability uye mamwe mapurojekiti. Cellulose ether (CE) inoshandiswa zvakanyanya mukugadzirisa dhaka nekuda kwekuchengetedza mvura uye kukora zvinhu. CSA simende hydration reaction yakaoma, iyo induction nguva ipfupi kwazvo, iyo yekumhanyisa nguva ndeye-multi-stage, uye hydration yayo inotapukirwa nekukanganiswa kwekusanganiswa uye kupisa tembiricha. Zhang et al. akawana kuti HEMC inogona kurebesa iyo induction nguva ye hydration yeCSA simende uye kuita iyo huru yepamusoro ye hydration kupisa kuburitsa lag. Sun Zhenping et al. akawana kuti HEMC's absorption effect yakakanganisa kutanga kwe hydration ye simenti slurry. Wu Kai et al. aidavira kuti kushambadza kusina simba kweHEMC pamusoro peCSA simenti kwakanga kusina kukwana kukanganisa kusunungurwa kwekupisa kwesement hydration. Migumisiro yekutsvakurudza pamusoro pemigumisiro yeHEMC paCSA simenti hydration yakanga isiri yunifomu, iyo inogona kukonzerwa nezvikamu zvakasiyana zvesimenti clinker inoshandiswa. Wan et al. akawana kuti kuchengetwa kwemvura kweHEMC kwaive nani pane iyo hydroxyethyl cellulose (HEC), uye iyo dynamic viscosity uye pamusoro tension yegomba remhinduro yeHEMC-modified CSA simende slurry ine high substitution degree yakanga yakakura. Li Jian et al. yakatarisa kushanduka kwekutanga kwekushisa kwemukati kweHEMC-yakagadziridzwa CSA simende madhaka pasi pemvura yakagadziriswa uye yakaona kuti pesvedzero yeHEMC ine madhigirii akasiyana ekutsiva aive akasiyana.
Nekudaro, iyo yekuenzanisa ongororo pamhedzisiro yeEC ine akasiyana anotsiva uye madhigirii ekutsiva pane yekutanga hydration yeCSA simende haina kukwana. Mune bepa rino, mhedzisiro yehydroxyethyl cellulose ether ine zvakasiyana zviri mukati, inotsiva mapoka uye madhigirii ekutsiva pane yekutanga hydration yeCSA simende yakadzidzwa. Iyo hydration kupisa kuburitsa mutemo we12h yakagadziridzwa CSA simende ine hydroxyethyl cellulose ether yakaongororwa zvine mutsindo, uye zvigadzirwa zve hydration zvakaongororwa zvakanyanya.

1. Muedzo
1.1 Raw Materials
Simende ndeye 42.5 giredhi inokurumidza kuomesa CSA simende, yekutanga uye yekupedzisira kuseta nguva ndeye 28 min uye 50 min, zvichiteerana. Kemikari yaro uye kuumbwa kwemaminerari (chikamu chehuwandu, muyero uye mvura-simende reshiyo inotaurwa mubepa rino chikamu chehuwandu kana huwandu hwehuwandu) modifier CE inosanganisira 3 hydroxyethyl cellulose ethers ine viscosity yakafanana: Hydroxyethyl cellulose (HEC), yakakwira dhigirii yekutsiva hydroxyethyl. methyl cellulose (H HEMC), yakaderera dhigirii yekutsiva hydroxyethyl methyl fibrin (L HEMC), iyo viscosity ye32, 37, 36 Pa · s, dhigirii rekutsiva 2.5, 1.9, 1.6 kusanganisa mvura yemvura yakasvibiswa.
1.2 Musanganiswa chiyero
Fixed water-cement ratio ye0.54, zvinyorwa zveL HEMC (zviri munyaya ino inotarirwa nehutano hwemvura yevhu) wL = 0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, HEC uye H HEMC yemukati ye0.5%. Mupepa iri: L HEMC 0.1 wL = 0.1% L HEMC shandura CSA simenti, zvichingodaro; CSA yakachena CSA simende; HEC yakagadziridzwa CSA simende, L HEMC yakagadziridzwa CSA simende, H HEMC yakagadziridzwa CSA simende inodaidzwa kunzi HCSA, LHCSA, HHCSA.
1.3 Nzira yekuedza
Iyo sere-channel isothermal micrometer ine kuyerwa kwe600 mW yakashandiswa kuyedza kupisa kwemvura. Pamberi pekuyedzwa, chiridzwa chacho chakasimbiswa pa (20 ± 2) ℃ uye hunyoro hunyoro RH = (60 ± 5)% ye6.0 ~ 8.0 h. CSA simenti, CE uye kusanganisa mvura zvakasanganiswa maererano nekusanganiswa kwehuwandu uye kusanganiswa kwemagetsi kwakaitwa kwe1min nekumhanya kwe600 r / min. Pakarepo uremu (10.0±0.1) g slurry mune ampoule, isa ampoule muchiridzwa uye tanga bvunzo yenguva. Iyo tembiricha ye hydration yaive 20 ℃, uye data yakarekodhwa yega yega 1min, uye bvunzo yakagara kusvika 12.0h.
Ongororo yeThermogravimetric (TG): Cement slurry yakagadzirwa zvinoenderana neISO 9597-2008 Cement - Nzira dzekuyedza - Kusarudza kuseta nguva uye kunaka. Iyo yakasanganiswa simende slurry yakaiswa muyedzo mold ye20 mm × 20 mm × 20 mm, uye mushure mekuita vibration kagumi, yakaiswa pasi (20±2) ℃ uye RH= (60±5)% yekurapa. Samples dzakatorwa pazera re t = 2.0, 4.0 uye 12.0 h, zvichiteerana. Mushure mekubvisa chikamu chepamusoro chemuenzaniso (≥1 mm), chakatsemurwa kuita zvidimbu zvidiki uye zvakanyikwa mu isopropyl doro. Isopropyl doro yakatsiviwa yega yega 1d kwemazuva anoteedzana 7 kuti ive nechokwadi chekumiswa kwe hydration reaction, uye yakaomeswa pa 40 ℃ kuti irambe ichirema. Weime (75±2) mg samples mucrucible, pisa masampuli kubva pa30℃ kusvika 1000℃ patembiricha ye20 ℃/min mumhepo yenitrogen pasi peadiabatic condition. Kuora kwekupisa kweCSA simende hydration zvigadzirwa zvinonyanya kuitika pa50 ~ 550 ℃, uye zviri mukati memvura yakasungwa nemakemikari zvinogona kuwanikwa nekuverenga huwandu hwekurasikirwa kwemasamples mukati meiyi chiyero. AFt yakarasika makumi maviri emvura yekristaro uye AH3 yakarasa 3 mvura yekristaro panguva yekuora kwekupisa pa50-180 ℃. Zviri mukati mechimwe nechimwe hydration chigadzirwa chinogona kuverengerwa zvinoenderana neTG curve.

2. Migumisiro uye nhaurirano
2.1 Ongororo ye hydration process
2.1.1 Pesvedzero yeEC zvinyorwa pane hydration process
Zvinoenderana neiyo hydration uye exothermic curves yezvakasiyana zvemukati L HEMC yakagadziridzwa CSA simende slurry, kune 4 exothermic peaks pa hydration uye exothermic curves ye pure CSA simende slurry (wL = 0%). Iyo hydration process inogona kukamurwa kuita dissolution stage (0 ~ 15.0min), shanduko nhanho (15.0 ~ 45.0min) uye acceleration stage (45.0min) ~54.0min), deceleration stage (54.0min ~ 2.0h), dynamic equilibrium stage ( 2.0 ~ 4.0h), reacceleration stage (4.0 ~ 5.0h), redeceleration stage (5.0 ~ 10.0h) uye nhanho yekudzikamisa (10.0h ~). Muna 15.0min pamberi pe hydration, simenti yemaminerari yakanyungudutswa nekukurumidza, uye yekutanga neyechipiri hydration exothermic peaks mune ino nhanho uye 15.0-45.0 min inoenderana nekuumbwa kwe metastable phase AFt uye kushandurwa kwayo kuita monosulfide calcium aluminate hydrate (AFm), zvichiteerana. Yechitatu exothermal peak pa 54.0min ye hydration yakashandiswa kupatsanura hydration yekukurumidza uye kudzika matanho, uye chizvarwa mazinga e AFt neAH3 akatora iyi se inflection point, kubva pa boom kusvika pakudzikira, ndokuzopinda mu dynamic equilibrium stage inogara 2.0 h. . Kana iyo hydration yaive 4.0h, hydration yakapinda zvakare padanho rekumhanyisa, C4A3 inokurumidza kunyungudika uye chizvarwa che hydration zvigadzirwa, uye pa5.0h, peak ye hydration exothermic heat yakaonekwa, ichibva yapinda mudanho rekudzikisa zvakare. Hydration yakagadzikana mushure menguva ye10.0h.
Kufurira kweL HEMC zvirimo paCSA simende hydration dissolutionuye nhanho yekushandura yakasiyana: apo L HEMC zvinyorwa zvakaderera, L HEMC yakagadziridzwa CSA simenti paste yechipiri hydration kupisa kusunungurwa peak yakaonekwa zvishoma kare, kupisa kwekupisa uye kupisa kusunungurwa kwepamusoro kukosha kwakanyanya kudarika CSA yakachena sement paste; Nekuwedzera kwehuwandu hweL HEMC, kusunungurwa kwekupisa kweL HEMC yakagadziridzwa CSA simenti slurry zvishoma nezvishoma yakaderera, uye yakaderera pane yakachena CSA simenti slurry. Huwandu hwepamusoro-soro mu hydration exothermic curve yeL HEMC 0.1 yakafanana neiyo yakachena CSA simende paste, asi 3rd uye 4th hydration exothermic peaks inokwidziridzwa kusvika 42.0min uye 2.3h, zvichiteerana, uye ichienzaniswa ne33.5 uye 9.0. mW/g yeakachena CSA simende paste, iwo exothermic peaks anowedzera kusvika 36.9 uye 10.5 mW/g, zvichiteerana. Izvi zvinoratidza kuti 0.1% L HEMC inomhanyisa uye inosimudzira hydration yeL HEMC yakagadziridzwa CSA simende padanho rinoenderana. Uye L HEMC yemukati ndeye 0.2% ~ 0.5%, L HEMC yakagadziridzwa CSA simende kukwidziridza uye deceleration nhanho yakabatanidzwa zvishoma nezvishoma, kureva, yechina exothermic peak pamberi uye yakasanganiswa neyechitatu exothermic peak, yepakati peiyo simba chiyero nhanho haichaoneki. , L HEMC paCSA cement hydration promotion effect inonyanya kukosha.
L HEMC yakakurudzira zvakanyanya hydration yeCSA simenti mu 45.0 min ~ 10.0 h. Mu 45.0min ~ 5.0h, 0.1% L HEMC ine zvishoma zvishoma pane hydration yeCSA simenti, asi kana zvinyorwa zveL HEMC zvichiwedzera kusvika 0.2% ~ 0.5%, mhedzisiro haina kukosha. Izvi zvakasiyana zvachose nemhedzisiro yeEC pane hydration yePortland simende. Zvidzidzo zvezvinyorwa zvakaratidza kuti CE ine huwandu hukuru hwemapoka ehydroxyl mumorekuru ichave yakashambadzirwa pamusoro pemasimende zvimedu uye zvigadzirwa zve hydration nekuda kwekupindirana kweasidhi-base, nekudaro kunonoka kwekutanga hydration yePortland simende, uye kusimba kweiyo adsorption, kunyanya kunonoka kunooneka. Nekudaro, zvakawanikwa mumabhuku kuti adsorption yeEC paAFt pamusoro yaive isina kusimba pane iyo pacalcium silicate hydrate (C‑S-H) gel, Ca (OH) 2 uye calcium aluminate hydrate pamusoro, nepo adsorption kugona HEMC paCSA simende zvimedu zvaive zvakare zvisina kusimba pane izvo zviri paPortland simende zvimedu. Uye zvakare, iyo atomu yeokisijeni paEC molecule inogona kugadzirisa iyo yemahara mvura muchimiro chehydrogen bond semvura yakashambadzirwa, kushandura mamiriro emvura inoputika mune simende slurry, uyezve kukanganisa simende hydration. Nekudaro, iyo isina kusimba adsorption uye kunyudzwa kwemvura kweEC kunoderera zvishoma nezvishoma nekuwedzera kwenguva ye hydration. Mushure meimwe nguva, mvura yakashambadzirwa ichasunungurwa uye inowedzera kuita neine unhydrated sement particles. Uyezve, kuitika kweEC kunogona kupawo nzvimbo yakareba yezvigadzirwa zve hydration. Ichi chinogona kunge chiri chikonzero nei L HEMC ichikurudzira CSA simende hydration mushure me45.0 min hydration.
2.1.2 Kufurira kweEC inotsiva uye dhigirii rayo pane hydration process
Iyo inogona kuoneka kubva kune hydration kupisa kuburitsa macurves matatu CE akagadziridzwa CSA slurries. Kuenzaniswa neL HEMC, iyo hydration kupisa kuburitsa mwero macurves eHEC uye H HEMC yakagadziridzwa CSA slurries zvakare ine ina hydration kupisa kuburitsa peaks. Ese matatu eEC akanonoka mhedzisiro pakupera uye kutendeuka matanho eCSA simende hydration, uye HEC neH HEMC vane kunonoka kunonoka mhedzisiro, kunonoka kubuda kweiyo accelerated hydration stage. Kuwedzerwa kweHEC neH-HEMC kwakanonoka zvishoma 3rd hydration exothermic peak, zvakanyanya kufambira mberi 4th hydration exothermic peak, uye yakawedzera peak ye 4th hydration exothermic peak. Mukupedzisa, iyo hydration kupisa kuburitswa kweatatu CE akagadziridzwa CSA slurries yakakura kupfuura iyo yakachena CSA slurries munguva ye hydration ye2.0 ~ 10.0 h, zvichiratidza kuti matatu CE ese anokurudzira hydration yeCSA simende panguva ino. Mune hydration nguva ye2.0 ~ 5.0 h, iyo hydration kupisa kusunungurwa kweL HEMC yakagadziridzwa CSA simende ndiyo yakakura, uye H HEMC neHEC ndiyo yechipiri, zvichiratidza kuti kukurudzirwa kwekugadzirisa kwepasi peHEMC pane hydration yeCSA simenti yakasimba. . Iyo catalytic mhedzisiro yeHEMC yaive yakasimba kupfuura iyo yeHEC, zvichiratidza kuti kuiswa kwemethyl group kwakasimudzira catalytic mhedzisiro yeEC pane hydration yeCSA simende. Iyo kemikari chimiro cheEC ine pesvedzero huru pakushambadza kwayo pamusoro pezvimedu zvesimende, kunyanya dhigirii rekutsiva uye rudzi rwechinotsiva.
Iyo steric chipingamupinyi cheEC chakasiyana nezvakasiyana zvinotsiva. HEC ine chete hydroxyethyl mucheni yepadivi, iyo idiki pane HEMC ine methyl boka. Naizvozvo, HEC ine yakasimba adsorption mhedzisiro paCSA simende zvimedu uye pesvedzero huru pakubata kusangana pakati pemasimende uye mvura, saka ine yakanyanya kunonoka kukonzeresa pane yechitatu hydration exothermic peak. Kutorwa kwemvura kweHEMC nekutsiviwa kwepamusoro kwakasimba zvakanyanya kupfuura iyo yeHEMC ine yakaderera kutsiva. Nekuda kweizvozvo, iyo yemahara mvura inobatanidzwa mu hydration reaction pakati pezvimiro zveflocculated inoderedzwa, iyo ine simba guru pakutanga hydration yemodified CSA simende. Nekuda kweizvi, yechitatu hydrothermal peak inononoka. Low substitution HEMCs ine mvura isina kusimba yekunyura uye nguva pfupi yekuita, zvichikonzera kuburitswa kwekutanga kwe adsorbent mvura uye kuwedzera hydration yenhamba huru yeunhydrated simende particles. Iyo isina kusimba adsorption uye kunyudzwa kwemvura kune kwakasiyana kunonoka mhedzisiro pane hydration dissolution uye shanduko nhanho yeCSA simende, zvichikonzera mutsauko mukusimudzirwa kwesimende hydration mune inotevera nhanho yeEC.
2.2 Ongororo yezvigadzirwa zve hydration
2.2.1 Pesvedzero yezvinyorwa zveEC pane zvigadzirwa zvehydration
Shandura iyo TG DTG curve yeCSA mvura inotsvedza neyakasiyana yemukati yeL HEMC; Zviri mukati memvura yakasungwa nemakemikari ww uye hydration zvigadzirwa AFt uye AH3 wAFt uye wAH3 zvakaverengwa maererano neTG curves. Mhedzisiro yakaverengerwa yakaratidza kuti DTG curves yakachena CSA simende paste yairatidza matatu peaks pa50 ~ 180 ℃, 230 ~ 300 ℃ uye 642 ~ 975 ℃. Inoenderana neAFt, AH3 uye kuora kwe dolomite, zvichiteerana. Pa hydration 2.0 h, TG curves yeL HEMC yakagadziridzwa CSA slurry yakasiyana. Kana hydration reaction inosvika 12.0 h, hapana misiyano yakakosha mumacurves. Pa 2.0h hydration, kemikari inosunga mvura ye wL = 0%, 0.1%, 0.5% L HEMC yakagadziridzwa CSA simende paste yaiva 14.9%, 16.2%, 17.0%, uye AFt content yaiva 32.8%, 35.2%, 36.7%, zvichiteerana. Zvinyorwa zve AH3 zvaiva 3.1%, 3.5% uye 3.7%, maererano, zvichiratidza kuti kuiswa kweL HEMC kwakavandudza hydration degree ye simenti slurry hydration ye 2.0 h, uye yakawedzera kugadzirwa kwezvigadzirwa zve hydration AFt uye AH3, kureva, inokurudzirwa. iyo hydration yeCSA simende. Izvi zvinogona kunge zviri nekuti HEMC ine ese ari maviri hydrophobic boka methyl uye hydrophilic boka hydroxyethyl, iyo ine yakakwirira pamusoro pekuita uye inogona kuderedza zvakanyanya kusawirirana kwepasi kwechikamu chemvura mune simende slurry. Panguva imwecheteyo, ine mhedzisiro yekupinza mhepo kufambisa chizvarwa chesimende hydration zvigadzirwa. Pa 12.0 h ye hydration, AFt uye AH3 zviri mukati muL HEMC yakagadziridzwa CSA simenti slurry uye yakachena CSA simende slurry yakanga isina misiyano inokosha.
2.2.2 Kufurira kweEC zvinotsiva uye madhigirii avo ekutsiva pane zvigadzirwa zve hydration
Iyo TG DTG curve yeCSA simende slurry yakagadziridzwa ne3 CE (zviri muEC ndeye 0.5%); Izvo zvinoenderana nekuverenga mhedzisiro yeww, wAFt uye wAH3 ndeyotevera: pa hydration 2.0 uye 4.0 h, TG curves akasiyana simende slurries akasiyana zvakanyanya. Kana iyo hydration inosvika 12.0 h, TG macurves akasiyana simende slurries haana mutsauko wakakosha. Pa 2.0 h hydration, mvura yakasungwa nemakemikari yakachena CSA simende slurry uye HEC, L HEMC, H HEMC yakagadziridzwa CSA simende slurry ndeye 14.9%, 15.2%, 17.0%, 14.1%, maererano. Pa4.0 h ye hydration, iyo TG curve yeyakachena CSA simende slurry yakadzikira zvishoma. Iyo hydration degree yevatatu CE yakagadziridzwa CSA slurries yaive yakakura kupfuura iyo yakachena CSA slurries, uye zviri mukati memakemikari akasungwa mvura yeHEMC yakagadziridzwa CSA slurries yaive yakakura kupfuura iyo HEC yakagadziridzwa CSA slurries. L HEMC yakagadziridzwa CSA simende slurry kemikari inosunga mvura yemukati ndiyo yakakura. Mukupedzisa, CE ine zvakasiyana-siyana zvinotsiva uye madhigirii ekutsiva ane misiyano yakakura pane yekutanga hydration zvigadzirwa zveCSA simende, uye L-HEMC ine yakanyanya kukurudzira mhedzisiro pakugadzirwa kwezvinhu zvehydration. Pa 12.0 h hydration, pakanga pasina musiyano wakakosha pakati pekurasikirwa kukuru kwevatatu CE yakagadziridzwa CSA simende slurps uye iyo yakachena CSA simende slurps, iyo yaienderana neyakakura yekupisa kuburitsa mhedzisiro, zvichiratidza kuti CE yakangokanganisa zvakanyanya hydration. CSA simende mukati me12.0 h.
Zvinogona kuonekwa zvakare kuti AFt uye AH3 hunhu hwepamusoro simba reL HEMC yakagadziridzwa CSA slurry ndidzo dzakakura pane hydration 2.0 uye 4.0 h. AFt zvinyorwa zveCSA slurry yakachena uye HEC, L HEMC, H HEMC yakagadziridzwa CSA slurry yaiva 32.8%, 33.3%, 36.7% uye 31.0%, maererano, pa 2.0h hydration. AH3 yemukati yaive 3.1%, 3.0%, 3.6% uye 2.7%, zvichiteerana. Pa 4.0 h ye hydration, AFt content yaiva 34.9%, 37.1%, 41.5% uye 39.4%, uye AH3 zvinyorwa zvaiva 3.3%, 3.5%, 4.1% uye 3.6%, maererano. Zvinogona kuonekwa kuti L HEMC ine simba rakasimba rekusimudzira pakugadzirwa kwe hydration zvigadzirwa zveCSA simenti, uye iyo inokurudzira yeHEMC yakasimba kudarika yeHEC. Kuenzaniswa neL-HEMC, H-HEMC yakavandudza dynamic viscosity ye pore solution zvakanyanya, zvichikanganisa kutakurwa kwemvura, zvichikonzera kuderera kwe slurry penetration rate, uye kukanganisa kugadzirwa kwechigadzirwa che hydration panguva ino. Kuenzaniswa neHEMCs, iyo hydrogen bonding mhedzisiro mumamorekuru eHEC inova pachena, uye iyo yekunyudza mvura ine simba uye inogara kwenguva refu. Panguva ino, iyo mvura yekunyura mhedzisiro yezvese yakakwirira-inotsiva HEMCs uye yakaderera-inotsiva HEMCs haisisiri pachena. Uye zvakare, CE inoumba "yakavharwa loop" yekufambisa yemvura mune iyo micro-zone mukati mesimende slurry, uye mvura inoburitswa zvishoma nezvishoma neEC inogona kuenderera mberi nekuita zvakanangana neyakapoteredzwa simende masimi. Pa12.0 h ye hydration, mhedzisiro yeEC paAFt uye AH3 kugadzirwa kweCSA simende slurry yakanga isisiri yakakosha.

3. Mhedziso
(1) The hydration ye sulfoaluminate (CSA) sludge mu 45.0 min ~ 10.0 h inogona kusimudzirwa nemhando yakasiyana yepasi hydroxyethyl methyl fibrin (L HEMC).
(2) Hydroxyethyl cellulose (HEC), high substitution hydroxyethyl methyl cellulose (H HEMC), L HEMC HEMC, aya matatu hydroxyethyl cellulose ether (CE) akanonoka kupera uye kutendeuka nhanho yeCSA simende hydration, uye yakasimudzira hydration ye2. 10.0 h.
(3) Kuiswa kwemethyl mu hydroxyethyl CE kunogona kuwedzera zvakanyanya kusimudzira kwayo kusimba kweiyo hydration yeCSA simenti mu 2.0 ~ 5.0 h, uye kusimudzira mhedzisiro yeL HEMC pane hydration yeCSA simende yakasimba kupfuura H HEMC.
(4) Kana zvinyorwa zveEC zviri 0.5%, chiyero cheAFt uye AH3 chakagadzirwa neL HEMC yakagadziridzwa CSA slurry pa hydration 2.0 uye 4.0 h ndiyo yakakwirira, uye mhedzisiro yekusimudzira hydration ndiyo inonyanya kukosha; H HEMC uye HEC yakagadziridzwa CSA slurries yakagadzira yakakwirira AFt uye AH3 yemukati pane yakachena CSA slurries chete pa4.0 h ye hydration. Pa 12.0 h ye hydration, mhedzisiro ye3 CE pane hydration zvigadzirwa zveCSA simende zvaive zvisisakoshi.