polycarboxylate dej reducer hauv cov pob zeb muaj zog siab

Nrog rau kev txhim kho ntawm kev lag luam kev tsim kho mus rau kev ua tau zoo, lub zog siab thiab kev tiv thaiv ib puag ncig ntsuab, qhov kev xav tau ntawm kev ua tau zoo ntawm cov ntaub ntawv ua vaj tse yeej ib txwm txhim kho. Cov pob zeb ua vaj tse muaj zog siab siv dav hauv cov tsev siab, choj, cov chaw tsim kho loj thiab lwm yam haujlwm engineering vim nws cov khoom siv kho tshuab zoo heev thiab kev ua haujlwm ntev. Raws li tiam thib peb kev ua tau zoo siab admixture,polycarboxylate dej txotau dhau los ua cov khoom siv tseem ceeb hauv kev npaj cov pob zeb ua vaj tse muaj zog nrog nws qhov kev tawg yooj yim thiab kev tiv taus kev tawg.

1. Cov yam ntxwv ua tau zoo ntawm cov dej polycarboxylate reducer

Polycarboxylate dej reducer yog ib hom tshiab ntawm cov dej ua haujlwm siab reducer synthesized los ntawm kev qhia ntau pawg ua haujlwm nrog polyether thiab acrylic acid ua cov saw tseem ceeb. Nws cov qauv molecular yog tsim los ntawm cov saw tseem ceeb adsorption pawg thiab cov saw sab steric hindrance pawg, uas muaj qib siab ntawm kev tsim thiab kev ua haujlwm. Piv nrog rau cov tshuaj naphthalene lossis aliphatic dej reducers, polycarboxylate dej reducers muaj cov txiaj ntsig tseem ceeb hauv qab no:

Tus nqi txo dej siab: Polycarboxylate dej txo tuaj yeem ua tiav tus nqi txo dej ntau dua 20% ntawm qhov koob tshuaj tsawg, ua kom txo tau qhov sib piv ntawm dej-cement ntawm cov pob zeb, yog li txhim kho nws lub zog.

Kev tawg tau zoo heev thiab khaws cia rau hauv qhov chaw poob qis: Nws cov qauv molecular tuaj yeem tsim ib txheej adsorption ruaj khov rau ntawm qhov chaw ntawm cov cement me me, txo qhov kev sib txuas ntawm cov khoom me me, thiab tswj tau qhov fluidity zoo.

Kev poob qis ntawm cov pob zeb: Los ntawm kev kho qhov ntev thiab qhov ceev ntawm cov saw hlau sab hauv cov qauv molecular, kev ua haujlwm ntawm cov pob zeb tuaj yeem txhim kho kom zoo dua qub kom tau raws li qhov xav tau ntawm kev tsim kho mus sij hawm ntev.

Kev sib raug zoo: Polycarboxylate dej reducer muaj kev hloov pauv zoo rau ntau hom cement thiab cov khoom siv hauv av (xws li cov tshauv ya, hmoov slag, silica fume), uas yog qhov zoo rau kev tsim qauv zoo ntawm cov khoom sib xyaw ua ke siab.

Ntsuab thiab tus phooj ywg ib puag ncig: Nws cov txheej txheem tsim khoom yog tus phooj ywg ib puag ncig, nrog ob peb yam khoom siv, thiab ua tau raws li qhov yuav tsum tau ua ntawm kev txhim kho kom ruaj khov.

2. Cov kev cai tseem ceeb rau cov pob zeb ua kom muaj zog siab

Cov pob zeb ua vaj tse muaj zog feem ntau yog cov pob zeb ua vaj tse uas muaj lub zog cubic compressive ntawm C60 thiab siab dua. Yuav kom ua tiav lub zog siab, qhov sib piv ntawm dej-cement yuav tsum tau txo qis thaum ua kom muaj kev ua haujlwm zoo ntawm kev tsim kho (xws li kev twj tso kua mis, kev ntws dej) thiab kev ruaj khov. Txog qhov kawg no, nws yog qhov tsim nyog los siv cov tshuaj txo dej ua haujlwm zoo los txhim kho kev ua haujlwm ntawm cov pob zeb ua vaj tse, thiab cov tshuaj txo dej polycarboxylate yog qhov kev xaiv zoo tshaj plaws los ua tiav lub hom phiaj no.

3. Cov txiaj ntsig ntawm polycarboxylate dej reducer hauv cov pob zeb muaj zog siab

Txhim kho lub zog thaum ntxov thiab lig: polycarboxylate dej reducer txo qhov sib piv ntawm dej-cement thaum tswj hwm qhov fluidity zoo, yog li ntawd cov cement tau hydrated tag nrho, txhim kho lub zog thaum ntxov thiab lig ntawm cov pob zeb, thiab ua tau raws li qhov xav tau tsim ntawm cov qauv muaj zog siab.

Txhim kho qhov ceev ntawm cov qauv pob zeb: txo qhov sib piv ntawm dej-cement yam tsis cuam tshuam rau kev ua haujlwm, pab txo cov hlab ntsha, txhim kho qhov ceev thiab kev tsis nkag ntawm cov pob zeb, thiab txhim kho nws lub zog.

Txhim kho kev ua haujlwm ntawm kev tsim kho: Hauv cov pob zeb ua vaj tse uas muaj zog heev, cov khoom sib xyaw feem ntau yog viscous vim muaj ntau cov cement. Qhov kev sib kis zoo heev ntawm polycarboxylate dej reducer tuaj yeem txhim kho qhov fluidity ntawm cov pob zeb ua vaj tse, txo qhov sib koom ua ke, thiab txhim kho kev siv twj tso kua mis.

Qhov cuam tshuam ntawm kev sib xyaw nrog cov khoom siv hauv av yog qhov tseem ceeb: polycarboxylate dej txo qis muaj cov txiaj ntsig zoo synergistic nrog cov khoom sib xyaw xws li cov tshauv ya, hmoov slag, thiab silica fume, uas pab ua kom zoo dua cov khoom siv ntawm cov pob zeb, xws li lub zog, kev ruaj khov, kev ntsws, thiab lwm yam.

Txo tus nqi tag nrho: Txawm hais tias tus nqi ntawm cov dej polycarboxylate reducer siab heev, nws qhov kev ua haujlwm siab tuaj yeem txo qhov kev siv cement, txo qhov kev siv hluav taws xob, txhim kho qhov zoo ntawm qhov project, thiab ua tiav cov txiaj ntsig kev lag luam zoo dua.

4. Kev tshuaj xyuas cov ntaub ntawv thov

Hauv ib qho project tsev siab heev, qhov strength grade yuav tsum yog C80, thiab nws muaj kev ua haujlwm zoo thiab durability. Pawg neeg project siv polycarboxylate high-performance water reducer, ua ke nrog silica fume thiab slag hmoov composite admixtures, thiab ua tiav tsim cov high-strength concrete uas ua tau raws li qhov yuav tsum tau tsim los ntawm kev ua kom zoo dua qhov sib piv ntawm dej-cement thiab particle size grading. Cov txiaj ntsig ntawm kev sim qhia tau hais tias 28-hnub compressive strength ntawm cov concrete tshaj 85 MPa, thiab lub sijhawm slump retention yog ntau dua 2 teev, uas ua tau raws li qhov xav tau ntawm kev tsim kho thiab pumping hauv qhov chaw, thiab kuj qhia tau tias zoo anti-freeze, anti-seepage thiab anti-carbonation.

5. Cov teeb meem uas twb muaj lawm thiab cov lus qhia txog kev loj hlob

Txawm hais tias polycarboxylate dej reducer siv dav hauv cov pob zeb ua kom muaj zog, tseem muaj cov teeb meem hauv qab no hauv cov haujlwm tiag tiag:

Teeb meem sib xws nrog qee cov cement: Qee hom cement yuav ua rau lub tshuab txo dej tsis ua haujlwm lossis kev ua haujlwm ntawm kev khaws cia slump txo qis, thiab kev tshawb fawb txog kev hloov pauv yog qhov yuav tsum tau ua.

Kev nkag siab siab rau qhov chaw tsim kho: Polycarboxylate dej reducer yog rhiab heev rau cov xwm txheej ib puag ncig xws li kub thiab av noo, thiab cov xwm txheej siv yuav tsum tau tswj hwm kom zoo.

Cov txheej txheem synthesis yog qhov nyuaj thiab tus nqi siab: Tam sim no, cov haujlwm engineering ua tau zoo tseem yog cov chaw thov tseem ceeb, thiab nws yog qhov ceev kom txo cov nqi los ntawm kev ua kom zoo dua qub los txhawb kev nrov npe.

Kev tsim cov polycarboxylate dej reducer yuav tsom mus rau cov hauv qab no: Ua ntej, kev txhim kho ntxiv ntawm cov qauv molecular kom ua tiav kev txhim kho synergistic ntawm kev txo dej thiab kev ua haujlwm khaws cia; qhov thib ob, kev tsim cov dej reducer ntse, xws li hom kub-rhiab, hom qeeb-tso tawm, thiab lwm yam; qhov thib peb, kev tshawb fawb txog ntsuab thiab ib puag ncig zoo synthesis txoj kev los txhawb kev txhim kho ruaj khov; qhov thib plaub, kev tsim qauv ntse ntawm cov sib tov sib xyaw ua ke nrog AI lossis cov ntaub ntawv loj.

Polycarboxylate dej txotau dhau los ua cov khoom sib xyaw tseem ceeb rau kev npaj cov pob zeb ua kom muaj zog nrog nws cov kev ua tau zoo heev. Los ntawm kev tsim qauv thiab kev siv tshuab thiab kev siv tshuab, nws tsis tsuas yog ua tau raws li ntau yam kev xav tau ntawm cov pob zeb ua kom muaj zog rau kev kho tshuab thiab kev ua haujlwm tau zoo, tab sis kuj txhim kho qhov zoo ntawm kev tsim kho thiab kev ua haujlwm zoo. Hauv cov ntsiab lus ntawm kev txhim kho tas mus li ntawm kev siv tshuab kev tsim kho yav tom ntej, polycarboxylate dej txo yuav siv nws lub peev xwm loj hauv thaj chaw dav dua.