Yuav Thov Li Cas Polycarboxylic Superplasticizer?

Txoj Kev Ib: Txhim kho qib kev txawj ntse, ruaj khov khoom zoo, thiab ntxiv dag zog rau cov khoom siv thev naus laus zis

Raws li kev tshawb fawb, tsuas yog ob peb lub tuam txhab ntawm polycarboxylate-based superplasticizers hauv Suav teb muaj kev tshawb fawb ywj pheej thiab kev tsim kho. Lwm cov tuam txhab lag luam feem ntau yog qhia cov thev naus laus zis los ntawm cov tsev kawm qib siab, cov tsev tshawb fawb, lossis lwm lub tuam txhab, lossis tsuas yog luam thev naus laus zis. Vim muaj kev txwv tsis pub muaj zog ntawm cov tuam txhab lag luam feem ntau, lawv tsis muaj kev nkag siab tob txog cov tshuab polycarboxylate superplasticizer, ua rau nws nyuaj rau hloov mus rau ntau yam kev hloov pauv hauv cov khoom siv raw thiab cov txheej txheem ntau lawm. Yog li ntawd, stabilizing cov khoom zoo yuav ua tsis tau.

Yog li, nws raug pom zoo tias cov neeg tsim khoom siv polycarboxylate-based superplasticizer nquag koom tes nrog cov tsev kawm qib siab thiab cov tsev kawm tshawb fawb kom nkag siab txog cov yam ntxwv cuam tshuam rau cov khoom lag luam. Lawv kuj yuav tsum tau kho cov txheej txheem synthesis tsis raws sij hawm kom ruaj khov cov khoom zoo thiab ntxiv dag zog rau cov cuab yeej cuab tam los ntawm kev sib koom lossis kev tshawb fawb ywj pheej thiab kev tsim kho kom tau raws li kev xav tau ntawm kev lag luam. Tsis tas li ntawd, kev tsim kho sai ntawm cov qauv raw khoom rau polycarboxylate superplasticizers thiab kev ruaj ntseg ntawm cov khoom siv raw khoom yog qhov tseem ceeb rau kev ua kom ruaj khov ntawm cov khoom lag luam.

Txoj Kev Thib Ob: Trust Test Results dua li cov khoom Specifications

Qee cov superplasticizers tau piav qhia tias txawv txawv hauv lawv cov khoom tshwj xeeb, lossis lawv cov txiaj ntsig kev xeem yuav zoo li zoo, tab sis lawv yuav tsis haum rau cov ntawv thov engineering tshwj xeeb. Ntawm qhov tod tes, qee cov khoom lag luam uas yuav tsis muaj qhov kev ntsuam xyuas zoo tuaj yeem yog qhov xav tau rau qee yam kev sib xyaw ua ke hauv ib qhov project. Tsis tas li ntawd, vim muaj kev hloov pauv ntawm cov khoom siv raw, cov txiaj ntsig kev sim thaum lub sij hawm sib tw yuav tsis cuam tshuam cov xwm txheej tiag tiag thaum lub sijhawm ua haujlwm. Raws li GB50119-2013 "Technical Specifications for the Application of Concrete Admixtures," Clause 2.1.4, nws tau hais meej meej tias "cov khoom siv raw siv hauv pob zeb nrog cov khoom sib xyaw, xws li cov cement, xuab zeb, gravel, cov ntaub ntawv ntxiv, thiab admixtures, yuav tsum ua tau raws li cov qauv hauv lub tebchaws thaum kuaj cov pob zeb nrog cov khoom sib xyaw, cov khoom siv raw siv hauv qhov project yuav tsum zoo ib yam li cov siv hauv kev tsim kho, thiab kev ntsuam xyuas yuav tsum tau ua raws li cov xwm txheej zoo ib yam li qhov chaw tsim kho yog tias cov khoom siv raw lossis cov kev hloov pauv ntawm kev ua tau zoo, kev sib tw ntxiv thiab kev sim yuav tsum tau ua. "

Txoj Kev 3: Tsis txhob sib cuag ntawm Polycarboxylate Superplasticizers thiab Cov Khoom Hlau

Rau polycarboxylate-based superplasticizer cov neeg tsim khoom thiab cov chaw muag khoom, cov cuab yeej tshwj xeeb thiab cov kab ntau lawm yuav tsum tau siv los ua ke thiab sib xyaw polycarboxylate superplasticizers, thiab cov no yuav tsum tsis txhob tsim los yog sib xyaw rau tib cov kab ntau lawm xws li lwm hom superplasticizers. Tsis tas li ntawd, polycarboxylate superplasticizers yuav tsum tsis txhob thauj lossis khaws cia rau hauv cov ntaub ntawv hlau (tshwj tsis yog cov hlau tsis muaj steel), tab sis yog cov khoom siv xws li yas lossis iav. Kev sib cuag nrog cov ntaub ntawv hlau tuaj yeem hloov pauv kev ua haujlwm ntawm polycarboxylate superplasticizers.

Txoj Kev Plaub: nruj me ntsis tiv thaiv kev sib xyaw ntawm lwm hom kev sib xyaw

Kev sib xyaw ntawm lwm cov superplasticizers lossis ntau hom kev sib xyaw yog txwv nruj heev. Qhov no muaj ob lub ntsiab lus: ua ntej, kev sib xyaw ntawm polycarboxylate-based superplasticizers (xws li nrog lignosulfonate, air-entraining agents, defoamers, retarders, thiab lwm yam) yuav tsum tsuas yog ua los ntawm cov neeg siv khoom sib xyaw lossis cov khoom lag luam. Cov khoom sib xyaw ua ke lossis cov neeg siv yuav tsum tsuas yog tshawb xyuas qhov ua tau zoo thiab kev lees paub ntawm cov khoom no thiab yuav tsum tsis txhob ntxiv lwm yam khoom. Nws tseem txwv tsis pub siv cov twj tso kua mis lossis cov cuab yeej ntsuas ntsuas uas tsis huv huv tom qab siv lwm cov khoom siv ntxiv. Thib ob, cov khoom siv sib xyaw ua ke, tsheb thauj mus los, thiab cov khoom siv twj tso kua mis yuav tsum ua kom zoo rau kev sib xyaw ua vaj tse nrog polycarboxylate superplasticizers. Yog tias cov cuab yeej sib koom, nws yuav tsum tau ntxuav kom huv si ua ntej hloov mus rau lwm cov khoom sib xyaw.

Txoj Kev 5: nruj me ntsis tswj qhov ntsuas ntawm superplasticizer thiab sib tov dej

Thaum npaj cov pob zeb sib xyaw nrog polycarboxylate superplasticizers, qhov zoo tshaj plaws ntawm superplasticizer thiab dej yuav tsum tau ua raws li kev soj ntsuam kuaj. Tus nqi ntawm superplasticizer los yog dej yuav tsum tsis txhob arbitrarily nce, vim hais tias qhov no yuav ua rau kev sib cais, los ntshav, clumping, nce huab cua cov ntsiab lus, thiab lwm yam undesirable phenomena uas yuav cuam tshuam rau ib txwm siv thiab pouring zoo ntawm cov pob zeb. Cov dej noo nyob rau hauv cov xuab zeb thiab gravel aggregates yuav tsum raug ntsuas kom raug thiab txiav tawm los ntawm tag nrho cov ntsiab lus dej kom tsis txhob muaj teeb meem tshwm sim los ntawm kev tshawb nrhiav cov dej tsis raug.

Txoj Kev Rau: Kho qhov teeb meem sib raug zoo ntawm Polycarboxylate Superplasticizers thiab Cement / Cov Khoom Siv Ntxiv

Kev sib xyaw ua ke ntawm cov khoom sib xyaw nrog cov cement thiab cov khoom siv ntxiv tau ntev dhau los ua teeb meem. Tau ntau xyoo, kev tshawb fawb txog kev sib raug zoo ntawm naphthalene-based superplasticizers thiab lawv cov tebchaw tau ua tiav cov txiaj ntsig zoo. Ua ntej, kev siv zog ntawm cov kws tshawb fawb tau tsim kev paub txog qhov teeb meem no ntawm cov neeg tsim khoom vaj tse, cov khoom siv sib xyaw, cov cement thiab cov khoom siv ntxiv, nrog rau kev tsim kho thiab cov neeg ua haujlwm saib xyuas. Qhov no tau hloov lub luag haujlwm los ntawm tsuas yog ua rau cov neeg tsim khoom sib xyaw kom muaj kev sib koom tes ntau dua. Qhov thib ob, ntau yam cuam tshuam tau raug txheeb xyuas, thiab kev tshawb fawb tob tau ua kom nkag siab txog lawv cov teebmeem. Thaum kawg, cov kev daws teeb meem tau tsim los rau cov teeb meem tsis sib haum xeeb ntawm cov khoom sib xyaw thiab cov cement lossis cov khoom siv ntxiv.

Txoj Kev Xya: Thib ob Ntxiv ntawm Polycarboxylate Superplasticizer yuav tsum tau ua raws li cov kws tshaj lij qhia thiab tom qab kev sim nruj

Raws li GB50119-2013 "Technical Specifications for the Application of Concrete Admixtures," thaum cov pob zeb ua ke nrog cov twj tso kua mis raug thauj mus rau qhov chaw tsim kho los ntawm cov cog npaj sib xyaw thiab cov pob zeb ua kom poob qis vim lub sij hawm mus ntev, kev khiav tsheb, los yog tos, lwm qhov ntxiv ntawm cov twj tso kua mis tuaj yeem siv tau. Ib tus nqi ntawm cov twj tso kua mis tuaj yeem muab ntxiv rau hauv lub tsheb thauj khoom, sib tov kom txog thaum qhov kev poob siab ua tau raws li qhov yuav tsum tau ua, thiab tom qab ntawd tso dej thiab nchuav tuaj yeem ua tiav. Rau cov pob zeb nrog polycarboxylate superplasticizers, yog tias qhov laj thawj tsis txaus ntseeg ua rau poob qis, qhov sib ntxiv ntawm superplasticizer tuaj yeem siv los kho cov dej ntws tawm thiab tiv thaiv cov khib nyiab ntawm cov pob zeb sib xyaw. Txawm li cas los xij, vim tias qhov kev ua tau zoo ntawm cov pob zeb sib xyaw yog qhov nkag siab rau qhov ntau npaum li cas ntawm polycarboxylate superplasticizer, kev tshaj ntxiv tuaj yeem yooj yim ua rau kev sib cais, los ntshav, thiab txawm tias txheej txheej. Tsis muaj kev tshawb fawb me me ntawm qhov cuam tshuam ntawm qhov sib ntxiv ntawm polycarboxylate superplasticizers ntawm kev ua tau zoo. Yog li ntawd, nyob rau hauv kev xyaum, kev txiav txim siab mus ntxiv ib tug thib ob koob tshuaj ntawm superplasticizer thiab kom muaj nuj nqis yuav tsum ua raws li cov kws tshaj lij cov lus qhia thiab ua raws li kev soj ntsuam nruj kom paub tseeb tias nws ua tau.

Txoj Kev Yim Yim: nruj tswj kev vibration Radius thiab vibration sij hawm

Vim hais tias polycarboxylate superplasticized qhob sib tov feem ntau muaj kev poob qis dua thiab qis dua, lub vojvoog vibration thiab lub sijhawm tom qab nchuav yuav tsum tau txiav txim siab los ntawm kev sim lossis cov kws tshaj lij kev taw qhia. Yog tias lub vojvoog vibration me me dhau los yog lub sijhawm vibration ntev dhau lawm, nws tuaj yeem ua rau huab cua tsis zoo, nrog rau kev sib cais loj ntawm cov aggregates thiab muab tshuaj txhuam, ua rau muaj kev cuam tshuam ntawm cov qauv.

Txoj Kev 9: Txhim kho qhov kho thaum ntxov thiab tiv thaiv kev tawg

Rau txhua qhov sib xyaw ua ke, kev kho thaum ntxov thiab lig yog qhov tseem ceeb. Qhov tseeb tias polycarboxylate superplasticizers muaj kev cuam tshuam me me ntawm cov pob zeb shrinkage tsis txhais hais tias kev kho tuaj yeem so lossis tshem tawm. Zoo li cov pob zeb nrog lwm cov khoom sib xyaw, pob zeb nrog polycarboxylate superplasticizers tau txais txiaj ntsig los ntawm kev kho mob thaum ntxov xws li kev ua tiav thib ob, npog zaj duab xis, lossis txau kom tiv thaiv cov yas shrinkage tawg. Kev ntub dej tsis tu ncua rau 7 lossis 14 hnub tsis yog tsuas yog tsim nyog rau kev txhim kho lub zog ib txwm, tab sis tseem tiv thaiv kom qhuav shrinkage tawg. Txhawm rau txhim kho cov kab nrib pleb, ntxiv cov fibers kuj tseem ceeb, tab sis cov dej noo zoo yuav tsum tau tswj xyuas kom cov qauv tsis tawg.

Txoj Kev 10: Kev tsim kho thiab kev tswj xyuas yuav tsum ua haujlwm ze nrog cov neeg tsim khoom thiab cov khoom siv sib xyaw

Hauv cov haujlwm engineering, ntau yam kev sib tw thiab kev tsis sib haum xeeb tshwm sim, qee zaum ua rau muaj xwm txheej lossis tsis sib haum xeeb. Txhua tus neeg koom nrog hauv qhov project thaum kawg tsom mus rau kev ua tiav tiav thiab kev lees paub zoo. Txij li thaum polycarboxylate superplasticizers muaj keeb kwm luv luv ntawm kev siv hauv engineering, cov kev paub ntau ntxiv yog txwv, thiab teeb meem kev thov lossis txawm tias muaj xwm txheej tshwm sim. Nyob rau hauv cov ntaub ntawv no, nws yog ib qho tseem ceeb rau kev tsim kho chav tsev los yog kev tswj kom ua hauj lwm zoo nrog cov neeg tsim khoom vaj tse, polycarboxylate superplasticizer cov neeg muag khoom, thiab cov tuam txhab cement / cov khoom siv ntxiv los txheeb xyuas thiab muab cov kev daws teeb meem zoo los ntawm kev pom.