Npaj-mixed-mixed-mixed ua faib ua ntub-morted cug thiab qhuav-sib nph ua ke raws li txoj kev ntau lawm. Lub ntub dej sib xyaw tov nrog dej yog hu ua cov dej sib xyaw, thiab cov sib xyaw ua kom qhuav yog hu ua cug qhuav qhuav. Muaj ntau cov ntaub ntawv raw koom nrog npaj txhij cov tshuaj khib. Ntxiv rau cov xis muaj cov khoom siv xis, thiab cov ntxhia tau ntxiv los txhim kho nws cov plasterity, dej khaws cia, thiab xwm yeem. Muaj ntau ntau yam admixtures rau npaj txhij cov tshuaj khib, uas tuaj yeem faib ua cov hmoov cellulose, Bentonite, thiab lwm yam los ntawm cov tshuaj lom neeg; tuaj yeem muab faib ua huab cua-entraining tus neeg sawv cev, anti-reducer, dispersant, dispersant, expersant, expersant, expersant, expersant, expersant, expersantures rau kev npaj-mixeded cug.
1 hom kev zoo siab rau kom npaj txhij.
1.1 Huab Cua-Entraining Tus Neeg Sawv Cev
Huab cua-Entraining tus neeg sawv cev yog tus neeg saib xyuas nquag, thiab hom nquag muaj cov Rosin Resins Hydrocarbon thiab alkrophibic pawg hauv huab cua-entraining tus neeg sawv cev Molecule. Thaum tus neeg sawv cev huab cua ntxiv rau lub tshuaj khib, pab pawg hydroxilic tau adsoring nrog cov khoom ua kom zoo nkauj, thaum cov pa taws kub txuas nrog cov pa me me npuas. Thiab tusyees faib ua kab tshuaj khib, yog li kom ncua kev cug, txhim kho cov pa roj hmab ua kom tiav, txhim kho lub cev muaj zog, txhim kho lub taub dej thiab tshuaj tsuag ntawm cov tshuaj khib.
Cov nyhuv ntawm huab cua-enraining tus neeg saib xyuas ntawm kev npaj ua hluav taws xob muab tshuaj tua hluav taws xob, txo qhov kev tawm tsam thaum lub sij hawm nqus dej thiab txau, thiab txo cov ntxhiab tsw zoo, thiab txo cov kab mob txhaws thiab txo qis txhaws ua ke; Qhov sib ntxiv ntawm huab cua-Entraining lub tensile d zog ntawm cug, thiab poob ntawm tensile bond zog ua haujlwm ntawm cov ntsiab lus ntawm cov ntsiab lus; Huab cua-Entraining cov neeg sawv cev tau zoo sib xws, ntawm qhov kev ua haujlwm txau kom txhim kho lub zog compressive thiab ua lub zog ntawm lub tshuaj khib.
Qhov cuam tshuam ntawm peb cov kev lag luam uas muaj cua nyob rau cov neeg sawv cev ntawm cov tshuaj khib nyiab npaj kom tiav. Cov kev tshawb fawb qhia tau hais tias tsis muaj kev xav txog cov nyhuv ntawm cellulose ntawm kev npaj ntub dej lub zog, thaum dej sib xyaw ua ke thiab lub zog ua kom muaj zog; Thiab dhau ntawm kev kawm txog kev hloov kho ntawm lub cellule tov nrog lub cellulose ether thiab huab cua-enraining tus neeg saib xyuas thiab cellulose ether tau sib xyaw. Lub cellulose ether yuav ua rau qee tus neeg sawv cev ua kom tsis muaj huab cua tsis ua tiav, yog li txo cov dej rov qab ntawm lub tshuaj khib.
Ib qho kev sib xyaw ntawm cov huab cua-Entraining tus neeg sawv cev, shrinkage txo tus neeg sawv cev thiab sib xyaw ntawm ob qho tib si muaj qee yam cuam tshuam ntawm cov khoom cug. Wang Quanlei pom tias qhov sib xyaw ntawm cov neeg ua haujlwm cug, thiab ntxiv rau ntawm shrinkage tus nqi tshuaj tua kab cug. Ob ntawm lawv tuaj yeem ncua kev tawg ntawm lub nplhaib cug. Thaum ob ob leeg sib xyaw ua ke, tus nqi shrinkage ntawm lub tshuaj khib tsis hloov ntau, thiab cov tawg ua tau zoo dua.
1.2 recispersible looj hmoov
Redispersible looj hmoov yog ib qho tseem ceeb ntawm niaj hnub no lub tshuab txhaj tshuaj qhuav. Nws yog dej-soluble organic polymer tsim los ntawm high-molecular emulsion los ntawm kev kub siab thiab kev kub siab, kev kho kom qhuav thiab lwm yam kev kho mob. Roger ntseeg tias cov emulsion tsim los ntawm cov qauv siv rov ua tau zoo hauv cov txiv ntoo ua yeeb yam hauv cov muaj peev xwm txhim kho lub peev xwm ntawm txoj kev ua kom muaj kev puas tsuaj.
Daim ntawv thov kev tshawb fawb ntawm recispersible looj hmoov ntawm cov khoom siv tshiab thiab tawv ntawm cov khoom sib xyaw tshiab, thiab muaj qee cov nyhuv dej txo. Nws pab neeg tau tshawb txog cov nyhuv ntawm kev kho lub zog ntawm lub zog ua rau lub zog ua rau lub zog tsis haum thiab kub hloov pauv. Peb thov XCT los kawm cov txiaj ntsig ntawm ntau hom roj hmab hmoov nyob rau hauv cov qauv roj, thiab ntseeg txog qhov sib xyaw ua ke, tus naj npawb ntawm cov hauv qhov hluav taws xob tau loj dua.
Cov qib sib txawv thiab cov pes tsawg cov roj hmab roj hmab tau xaiv los ntsuas lawv cov cawv ntawm kev ua yeeb yam ntawm cov tshuaj xaub. Cov kev tshawb fawb tau pom tias thaum muaj cov roj hmab hloov roj hmab tau hloov kho tau nyob hauv cov qib ntawm 1.0%, kev ua tau zoo ntawm cov roj hmab sib txawv tau sib npaug. Cov. Tom qab Redispersible loojas tau ntxiv rau cov cement, cov xis ua yeeb yaj kiab, cov xis mas muaj kev txhim kho ntau yam. Los ntawm kev tshawb fawb, nws yog pom tias tov redispersible looj cov qauv tshuaj cug, thiab xis mas tuaj yeem txhim kho cov kab tshuaj khib nyiab, thiab txhim kho kev ua haujlwm ntawm cug.
Kev hloov kho cov nyhuv ntawm redispersible looj hmoov rau ntawm cov khoom ntawm ultra-nplua xuab zeb xis cug xis. Hauv kev tshawb fawb, cov lus nyeem xuab zeb ruaj khov yog 1: 2.5, cov roj hmab tau xaiv los ntawm kev hloov kho ntawm lub cev ntawm lub Sem, thiab cov roj hmab tau txheeb xyuas cov khoom siv roj hmab rov qab, cov khoom lag luam, thiab qhov zoo dua ntawm cov tshuaj khib.
Lub tshuab ntawm kev ua ntawm redispersible looj quav, thiab kev sib xyaw ua ke nrog kev sib xyaw ua ke, thiab kev sib xyaw ua ke ntawm cov khoom xyaw ua ke ntawm thermal rwb thaiv cov tshuaj khib.
1.3 thickened hmoov
Txoj haujlwm ntawm cov hmoov tuab yog txhawm rau txhim kho qhov ua tau zoo ntawm lub tshuaj khib. Nws yog cov khoom uas tsis muaj huab cua uas npaj tau los ntawm ntau cov ntaub ntawv inorganic, organic polymers, surfactants thiab lwm cov ntaub ntawv tshwj xeeb. Thickening hmoov suav nrog redispersible looj cov nyhuv, tsis muaj peev xwm ua kom muaj kev sib xyaw thiab cov dej tsis sib xws, tab sis kuj muaj kev sib sau zoo nrog ntau yam. Qhov sib xyaw tau txhim kho cov kev ua tau zoo ntawm cug. Peb tau kawm txog cov nyhuv ntawm HJ-C2 Thickened hmoov ntawm cov khoom ntawm qhuav-sib xyaw ua ke ntawm cov txheej txheem tshuaj khib nyiab ntawm kab tshuaj khib nyiab. Lub cawv ntawm thickening hmoov thiab ntau lub ntsiab lus ntawm lub cev thiab tshuab ntsuas thiab siv hluav taws xob tshiab ntawm cov doses sib txawv. Cov kev tshawb fawb tau qhia tau tias kev ua haujlwm ntawm cov colle tshiab tau ua kom zoo dua vim qhov sib ntxiv ntawm cov hmoov tuab. Kev sib txuam ntawm recispersible looj hmoov zoo nkauj etle cug thiab txo cov ntaub ntawv ntxhia etle thiab inorgal cov ntaub ntawv txo cov tshuaj sib xyaw thiab lub zog yooj yim ntawm cug; Lub durability ntawm qhuav culture tau cuam tshuam, uas nce qhov shrinkage ntawm lub tshuaj khib. Cov nyhuv ntawm kev sib xyaw ntawm Bentonite thiab cellulose ether rau ntawm kev ua haujlwm celluled, nyob rau hauv cov kev ua kom tiav-sib xyaw ntawm cov tshuaj xis. Hauv qhov kev faib ua feem no, cov hmoov tuab ua ke nrog ob tus muaj qhov cuam tshuam zoo dua ntawm cov kev ua haujlwm ntawm lub tshuaj khib.
1.4 Cellulose ether
Cellulose ether los ntawm cov ntsiab lus ntawm tsob nroj cell phab ntsa los ntawm Fabkis cov neeg ua liaj ua teb payon hauv 1830. Nws yog tsim los ntawm cov celling cellulose los ntawm cov ntoo thiab cov paj rwb nrog caustic dej qab zib, thiab tom qab ntawd ntxiv etherification tus neeg sawv cev rau tshuaj lom neeg. Vim tias cellulose ether muaj cov dej ua kom zoo thiab ua kom muaj kev cuam tshuam me me ete aas kom txhim kho kev ua haujlwm freshly cug. Hauv cov ntawv tso cai, cov feem ntau siv ntau yam ntawm cellulose ether-ether (Hydrothetyl metheny cellulose ether yog cov feem ntau siv.
HydroxyPropy cellulose ether (HPMC) muaj ib qho muaj txiaj ntsig zoo ntawm cov kua txiv, dej tuav thiab ua lub zog ntawm tus kheej txoj kab sib xyaw. Cov txiaj ntsig tau qhia tias cellulose ether tuaj yeem txhim kho cov dej cug, txo cov tshuaj khib, thiab ua si zoo retarding effect; Thaum tus nqi ntawm hydroxypropy etherencellulose ether yog nruab nrab ntawm 0.02% thiab 0.04%,, lub zog ntawm lub tshuaj khib yog txo. Xu Fenlian tham txog cov cawv ntawm hydrocarbon project ether rau ntawm kev hloov ntawm cov ntsiab lus ntawm medloth cellulose ether. Cov txiaj ntsig qhia tau hais tias Cellulose ua yeeb yam huab cua-enraining cov nyhuv cua thiab txhim kho kev ua haujlwm ntawm lub tshuaj cug. Nws cov dej khaws cia txo cov stratification ntawm kev tshuaj khib thiab ntxib lub sijhawm ua haujlwm ntawm lub tshuaj khib. Nws yog sab nraud ntxiv uas tuaj yeem txhim kho kev ua tau zoo ntawm lub tshuaj khib. Thaum lub sij hawm tshawb nrhiav, nws kuj tau pom tias cov ntsiab lus ntawm cellulose yuav tsum tsis txhob nce siab nyob rau hauv cov kab cug, ua rau muaj zog loj, ib qho kev cuam tshuam ntawm qhov zoo ntawm lub cug. Cov nyhuv ntawm cellulose ether rau ntawm cov khoom ntawm kev npaj-mixeded cug. Cov kev tshawb fawb tau pom tias qhov sib xyaw ntawm cov cellulose tuaj yeem txhim kho cov dej tshem tawm ntawm lub tshuaj khib, thiab tib lub sijhawm muaj kev txo cov nyhuv rau ntawm lub tshuaj khib. Lub cellulose ether kuj tuaj yeem ua kom lub qhov sib tov cug sib tov ua kom ntom ntom ntom ntom ntom, lub sijhawm teem caij nyoog ntev, txo qhov txo qis thiab lub zog. Cellulose ether thiab starch ether yog ob hom admixtures feem ntau siv hauv kev siv cug. Cov nyhuv ntawm ob sib xyaw ua ke rau hauv qhuav-colled cug ntawm kev ua yeeb yam ntawm cug. Cov txiaj ntsig qhia tau hais tias kev sib xyaw ua ke ntawm ob tau txhim kho txoj hlua khi ntawm lub zog ntawm lub tshuaj khib.
Muaj ntau cov kws tshawb fawb tau kawm txog kev cuam tshuam ntawm cellulose ether rau lub zog ntawm cement, ua rau muaj ntau qhov kev ua tau zoo ntawm kev hloov pauv cement. Cov nyhuv ntawm viscosity thiab kev noj tshuaj ntawm cellulose ether ntawm cov khoom siv tshuab ntawm cov xis mas slurry. Cov txiaj ntsig qhia tau hais tias lub zog ntawm xiss cug hloov nrog cellulose ntawm Masen Slurry ntawm kev nce ntau ntawm cov cellulose ether. Cov qauv ntawm tsawg dua thiab thaum kawg stabilizing, thaum lub zog Flexural tau pom kev hloov pauv ntawm nce zuj zus, ruaj khov thiab nce me ntsis.
2 epilogue
(1) Kev tshawb fawb ntawm Inshixtures tseem tsawg rau kev sim kev sim, thiab cuam tshuam ntawm kev ua haujlwm ntawm cov khoom noj khoom haus cov khoom noj ua kom zoo. Tseem muaj qhov tsis muaj kev soj ntsuam kom muaj nuj nqis ntawm kev sib ntxiv ntawm cov khoom siv roj av, cov kev hloov ntawm interface sib txuas lub zog, thiab cov txheej txheem hydration.
(2) Cov nyhuv ntawm cov admixture yuav tsum tau hais hauv cov ntawv thov engineering. Tam sim no, ntau qhov kev txheeb xyuas tseem tseem txwv rau kev kuaj ntsuas kev ntsuas. Ntau hom phab ntsa substrates, qhov chaw nqus dej, dej nqus, thiab lwm yam yuav tsum muaj ntawm cov ntsuas kev ua haujlwm ntawm lub cev. Cov caij sib txawv, qhov kub kub, cua nrawm, lub zog ntawm cov tshuab siv thiab cov haujlwm siv ncaj qha cuam tshuam rau kev sib xyaw ua ntej. Cov nyhuv ntawm cov tshuaj sib tov. Txhawm rau kom ua tiav cov nyhuv zoo nyob rau hauv engineering, npaj txhij cov kab sib xyaw thiab cov nqi tsim khoom yuav tsum tau ua kom tiav, yog li kom ua tiav qhov kev ua tau zoo tshaj plaws.
Lub Sijhawm Post: Feb-21-2025