Cov ntsiab lus tseem ceeb thaum siv Polycarboxylate

1.Control dej cov ntsiab lus rationally
Ntawm ib sab, cov ntsiab lus dej yuav tsum tau tswj xyuas kom ntseeg tau tias cov dej-cement piv (thiab yog li pob zeb muaj zog). Ntawm qhov tod tes, polycarboxylate yog rhiab heev rau cov ntsiab lus dej. Indicators feem ntau siv los qhia txog kev ua tau zoo ntawm cov pob zeb sib xyaw muaj xws li flowability, cohesiveness, thiab dej tuav. Txij li thaum polycarboxylate yog rhiab heev rau dej, qee zaum tsuas yog 1kg mus rau 3kg nce hauv dej tuaj yeem ua rau muaj teeb meem loj xws li los ntshav, pob zeb raug, kev sib cais, thiab hauv qab rub tawm, ua rau nws tsis tuaj yeem ua kom muaj qhov sib xws ntawm cov pob zeb sib xyaw. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum nruj me ntsis tswj cov dej siv ib lub cubic meter ntawm cov pob zeb thaum lub sij hawm tsim khoom, thiab xam cov ntsiab lus noo noo ntawm cov xuab zeb thiab aggregates. Kev saib xyuas tshwj xeeb yuav tsum tau them rau cov dej noo ntawm cov xuab zeb ntxuav, uas tuaj yeem tsis ruaj khov thiab cuam tshuam los ntawm lwm yam xws li nag thiab daus. Yog li, cov xuab zeb uas tau xa tuaj tshiab yuav tsum tau tso tseg kom ruaj khov rau qee lub sijhawm ua ntej siv, thiab kev tsim kho yuav tsum zam thaum hnub los nag.

2.Control ntawm Polycarboxylate Dosage
Ntxiv nrog rau kev tswj cov dej hauv lub sijhawm sim sib xyaw thiab tsim khoom, nws tseem ceeb heev rau kev tswj cov tshuaj polycarboxylate. Kev noj tshuaj tsis txaus ua rau poob qis sai, tsis muaj dej txaus, thiab ua haujlwm tsis zoo, thaum noj ntau dhau tuaj yeem ua rau los ntshav hnyav, sib cais, thiab hauv qab rub. Cov dej zoo tshaj plaws thiab cov tshuaj sib xyaw ua ke yuav tsum tau txiav txim siab los ntawm ntau qhov kev sim. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev sib xyaw ua ke yuav tsum siv tib cov ntaub ntawv raw li qhov project tiag tiag, thiab kev sib xyaw ua haujlwm yuav tsum tau tswj raws li kev tsim kho. Thaum muaj kev hloov pauv ntawm cov khoom siv raw lossis cov kev xav tau ntawm kev ua haujlwm, yuav tsum muaj kev sib tw tshiab.

3.Txheej txheem kev xav rau siab-Strength pob zeb
Kev lig kev cai, thaum npaj cov pob zeb ua kom muaj zog, nws tau ntseeg tias ua kom cov cement cov ntsiab lus thiab txo cov khoom siv ntxiv yuav ua rau muaj zog dua. Txawm li cas los xij, qhov no tsis yog ib txwm muaj. Cov ntsiab lus ntawm cov cement ntau dhau tuaj yeem ua rau cov pob zeb nplaum nrog cov dej ntws tsis zoo, thiab txawm hais tias kev txhim kho lub zog thaum ntxov yuav nrawm, tom qab lub zog loj hlob tuaj yeem qeeb lossis txawm tias nres. Qee zaum, ntxiv 30kg ntawm cov cement tsis txhim kho lub zog piv rau kev sib xyaw uas tsis muaj cov cement ntxiv. Tom qab kev sim sib xyaw ua ke, nws tau pom tias nce cov khoom ntxiv los ntawm 5% -10% thaum ua kom tag nrho cov ntaub ntawv sib txuas ua ke tuaj yeem ua rau muaj zog zoo tshaj plaws thiab zoo dua tom qab kev loj hlob. Tsis tas li ntawd, kev siv cov hmoov tshauv loj tuaj yeem txhim kho cov dej ntws ntawm cov pob zeb, txo cov cua sov ntawm cov dej, tiv thaiv kev tawg, thiab txhim kho cov kav ntev.

4.Tsis txhob sib xyaw Naphthalene-raws li Admixtures
Cov nroj tsuag feem ntau yuav tsum tau siv naphthalene-raws li admixtures nrog rau polycarboxylate admixtures (naphthalene rau qis rau nruab nrab lub zog pob zeb, polycarboxylate rau cov pob zeb muaj zog). Thaum ua tau, nws yog qhov zoo tshaj plaws los siv lawv hauv cov chaw sib cais. Yog tias ob hom siv rau tib lub tshuab, cov ntim ntim, cov kav dej, thiab cov khoom sib tov yuav tsum tau muab ntxuav kom huv thaum siv. Lub pob zeb tov tsheb yuav tsum tau ntxuav ua ntej thauj khoom. Yog tias vim li cas cov pob zeb tsis tuaj yeem rub tawm hauv lub sijhawm, ua rau poob qis thiab ntws tawm, "secondary admixture add" tuaj yeem siv los daws qhov teeb meem. Tus nqi ntxiv yuav tsum txiav txim siab los ntawm kev sim thiab kev paub dhau los, tab sis naphthalene-raws li admixture yuav tsum tsis txhob muab ntxiv, vim tias kev sib xyaw ob hom kev sib xyaw ua ke tuaj yeem ua rau cov pob zeb "teeb ​​tsa sai," ua rau tag nrho cov khoom pov tseg.

5. Txhim kho kev sim
Admixture testing ua ke nrog kev sim sib xyaw yog ib txoj hauv kev zoo los xyuas kom meej tias kev ua haujlwm ntawm pob zeb. Txawm hais tias txoj kev no siv sijhawm ntev, nws muaj txiaj ntsig zoo. Qee lub sij hawm, txawm tias tag nrho cov kev ntsuas kev sib xyaw ua ke dhau los, cov teeb meem yuav tshwm sim thaum tsim khoom thiab siv, ntes pab pawg tawm tsam. Yog li ntawd, ntxiv rau kev sim cov khoom sib xyaw, cov qauv yuav tsum tau muab coj los ntawm cov khoom siv raw uas yuav siv thiab sib xyaw ua ke raws li qhov project cov kev xav tau txhawm rau txheeb xyuas cov teeb meem muaj peev xwm. Yog tias muaj teeb meem tshwm sim, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov kws tshaj lij ntawm cov khoom siv sib xyaw kom hloov kho sai.

6. Txhim khu kev sib txuas lus nrog pab neeg tsim kho thiab kev soj ntsuam ntawm qhov chaw
Txij li cov pob zeb polycarboxylate yog qhov nkag siab zoo rau cov khoom siv raw zoo thiab kev tswj hwm kev tsim khoom, nws yog ib qho tseem ceeb kom nkag siab txog cov kev xav tau ntawm kev sib xyaw ua ke, kev thauj mus los deb, huab cua, thiab lwm yam ntsiab lus los ntawm pab pawg tsim ua ntej siv. Yog tias tsim nyog, yuav tsum tau mus xyuas qhov chaw los tshuaj xyuas cov yam ntxwv xws li kev siv cov twj tso kua mis, cov yeeb nkab layout, qhov kev faib tawm, thiab cov neeg ua haujlwm muaj pes tsawg leeg. Raws li cov ntaub ntawv no, cov tsheb thauj mus los yuav tsum sib koom ua ke kom zoo. Thaum cov twj tso kua mis siab, cov pob zeb ua haujlwm siab, nws yog ib qho tseem ceeb kom txo tau qhov ntev ntawm cov kav dej kab rov tav. Qhov no yog vim hais tias thaum lub slump siab, lub pob zeb ua viscos ntau, thiab yog hais tias lub sij hawm ntawm lub twj tso kua mis ntev dhau lawm, aggregates yuav lo rau hauv cov yeeb nkab phab ntsa, ua rau cov twj tso kua mis tsis kam thiab ua rau blockages. Ib qho kev daws teeb meem yog txhawm rau tso cov pob zeb ua ntu ntu ntawm 10-15 feeb kom tsis txhob txhaws.

7.Tshaj tawm qhov kev hloov pauv hauv kev ua tau zoo ntawm qhov sib txawv
Kev ua tau zoo ntawm pob zeb tuaj yeem sib txawv thaum lub sijhawm sib txawv xws li kev sim sib xyaw, kev tsim khoom, thiab kev tsim kho. Feem ntau, muaj qhov sib txawv ntawm cov ntsiab lus dej thiab cov tshuaj sib xyaw ua ke ntawm kev sim sib xyaw thiab cov khoom sib xyaw ua ke (kev ua yuam kev), thiab cov pob zeb sib xyaw hauv lub xeev hloov pauv los ntawm lub sijhawm nws yog qhov sib xyaw tshiab rau thaum nws xa mus rau qhov chaw (slump poob). Tsis tas li ntawd, muaj qhov sib txawv ntawm qhov sib xyaw ua ke tshiab thiab cov pob zeb uas tau los ntawm cov kav dej mus rau qhov chaw ua haujlwm (tswj poob). Cov kev hloov pauv no yog kev zam tsis tau thiab yuav tsum tau kawm thaum sim thiab tsim khoom. Thaum kev ua tau zoo hloov pauv yam tsis tau xav txog, ceev, tsim nyog, thiab kev daws teeb meem raws li kev tshawb fawb yuav tsum tau pom kom tsis txhob ncua sij hawm thiab poob loj. Qhov no yuav tsum tau ua raws li "sijhawm, tshawb fawb, thiab tsim nyog".

Polycarboxylate, raws li lub cim tshiab ntawm kev ua haujlwm siab ua vaj tse, muaj qhov zoo thiab muaj peev xwm muaj zog. Txawm li cas los xij, zoo li txhua yam thev naus laus zis, nws muaj nws cov kev txwv. Los ntawm kev siv nws lub zog, hais txog nws qhov tsis muaj zog, thiab siv nws kom raug, qhov txiaj ntsig zoo tshaj plaws tuaj yeem ua tiav. Hauv qee thaj chaw uas siv polycarboxylate yog qhov tshiab, kev paub dhau los yuav raug txwv, thiab kev nyuaj siab yuav tshwm sim. Muab hais tias tus neeg muaj peev xwm muaj tsawg, nws yooj yim rau kev taug kev tsis ncaj ncees lawm lossis nco lub cim. Yog li ntawd, nws yog ib qho tseem ceeb rau cov neeg ua haujlwm hauv cov tuam txhab ua vaj tse los koom nrog kev sib txuas lus thiab sib koom cov peev txheej los xyuas kom muaj kev sib koom ua ke.