Pob zeb grouting yog cov khoom siv tsim kho tshwj xeeb siv los sau cov pob zeb sib txawv, txhim kho cov teebmeem zoo nkauj thiab kev ruaj khov ntawm cov qauv, thiab xav tau kev nplaum zoo, tiv taus tawg, tiv taus huab cua thiab tiv taus dej.Hmoov polymer uas yaj tau dua (RDP)yog ib qho tseem ceeb hloov kho hauv cov mis grouting pob zeb, uas tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv grouting, ua rau nws qhia tau tias muaj kev ruaj khov zoo dua thiab kev tsim kho hauv cov haujlwm sab hauv tsev thiab sab nraum zoov.
1. Cov yam ntxwv tseem ceeb thiab cov txheej txheem ntawm kev ua haujlwm ntawm RDP
RDP yog ib qho hmoov polymer uas rov tawg ua dua tshiab uas tau npaj los ntawm cov txheej txheem ziab tshuaj tsuag. Cov ntaub ntawv siv feem ntau suav nrog ethylene-vinyl acetate (EVA), acrylate copolymer thiab styrene-acrylate copolymer. RDP tuaj yeem tawg ua dua tshiab los ua cov polymer emulsion thaum nws ntsib dej, thiab tsim cov zaj duab xis polymer network nrog cov khoom siv cement hydration lossis cov khoom sau kom txhim kho qhov yooj ywm thiab lub zog sib txuas ntawm cov khoom siv grouting. Hauv kev siv pob zeb grouting, cov zaj duab xis polymer no tuaj yeem tsim "choj nplaum" ntawm qhov chaw ntawm pob zeb, tiv taus qhov kev ntxhov siab los ntawm kev nthuav dav thiab kev cog lus thermal, thiab txo qhov kev pheej hmoo ntawm kev tawg.
2. Txhim kho qhov nplaum thiab tawg tsis kam
Cov pob zeb grouting feem ntau yog siv los sau cov qhov sib txawv ntawm cov pob zeb ntuj, marble, granite thiab lwm yam khoom siv. Cov substrates no muaj cov nto ntom thiab nqus dej tsawg, thiab muaj kev nplaum tsawg rau cov cement mortar ib txwm muaj. Tom qab ntxiv RDP, cov zaj duab xis polymer yooj ywm uas tsim nyob rau hauv cov khoom siv grouting txhim kho qhov kev nplaum nrog cov pob zeb substrate, thiab tuaj yeem tswj tau kev sib txuas zoo txawm tias nyob rau hauv ib puag ncig nrog qhov sib txawv ntawm qhov kub thiab txias, tiv thaiv kev tawg thiab poob tawm. Tib lub sijhawm, RDP muab cov khoom siv grouting qee yam ductility, uas tuaj yeem ua kom zoo dua qhov tawg los ntawm kev ntsws lossis lub zog sab nraud ntawm lub pob zeb interface.
3. Txhim kho kev tiv thaiv dej thiab kev tsis nkag tau
Cov ntaub ntawv grouting pob zeb feem ntau yuav ua rau dawb, hollowing lossis poob tawm thaum raug rau qhov chaw noo noo ntev. Cov zaj duab xis polymer organic ntom ntom uas tsim los ntawm RDP hauv lub kaw lus grouting tuaj yeem txo cov qhov hws capillary, txhim kho cov khoom tsis muaj dej thiab tsis kam dej, thiab yog li tiv thaiv cov dej noo kom tsis txhob nkag mus rau sab hauv ntawm lub pob zeb. Qhov no tseem ceeb heev rau pob zeb grouting hauv cov chaw ntub dej lossis raug tshav ntuj xws li chav dej, chav ua noj thiab cov toj roob hauv pes sab nraum zoov.
4. Txhim kho kev ua haujlwm ntawm kev tsim kho
Kev qhia txog RDP tsis yog tsuas yog ua kom zoo dua cov khoom siv kho tshuab ntawm cov khoom siv grouting tiav lawm, tab sis kuj txhim kho nws txoj kev tsim kho. RDP tuaj yeem txhim kho qhov khaws cia dej ntawm cov slurry thiab tiv thaiv cov kab nrib pleb shrinkage los ntawm kev poob dej thaum ntxov; tib lub sijhawm, nws txhim kho kev ua haujlwm thiab kev npliag, ua rau nws yooj yim dua rau cov grouting kom sau cov kab nrib pleb zoo thiab ua tiav qhov chaw du thiab tiaj tus. Qhov chaw slurry tom qab kev tsim kho yooj yim dua los ntxuav, txo qhov kev pheej hmoo ntawm kev ua qias tuaj rau ntawm qhov chaw pob zeb.
5. Txhim kho kev tiv thaiv huab cua thiab kev zoo nkauj
Rau cov pob zeb grouting sab nraum zoov, kev tiv taus UV laus thiab kev tiv taus khov-thaw yog cov cim tseem ceeb rau kev ntsuas kev ua tau zoo mus sij hawm ntev. RDP muab cov khoom siv grouting zoo heev tiv taus huab cua thiab tuaj yeem tswj tau cov qauv ruaj khov hauv qab qhov kub thiab txias siab thiab qis thiab cov voj voog ntub-qhuav. Tsis tas li ntawd, qhov yooj ywm siab ntawm RDP tuaj yeem txo qhov sib txawv ntawm xim lossis tev tawm los ntawm kev ntxhov siab ib puag ncig thiab ua kom ntev qhov zoo nkauj ntawm qhov chaw pob zeb.
6. Kev siv tshuaj RDP thiab kev ua kom zoo dua ntawm cov mis
Tus nqi ntawm RDP hauv cov khoom siv grouting pob zeb yuav tsum tau txiav txim siab raws li cov yam xws li hom substrate, qhov dav ntawm seam, thiab qhov chaw tsim kho, thiab feem ntau yog 2% txog 6% ntawm qhov hnyav ntawm cov khoom siv cementitious. Kev siv tshuaj ntau dhau yuav ua rau muaj kev ntswj ntxiv thiab cov nqi siab dua, thaum kev siv tshuaj tsawg dhau yuav tsis ua tiav qhov kev ua tau zoo xav tau. Yog li ntawd, hauv kev tsim khoom tiag tiag, nws yog qhov tsim nyog los ua kom zoo dua cov mis los ntawm kev sim thiab kho nws ua ke nrog lwm cov khoom ntxiv xws li cellulose ether, defoamer thiab filler kom tau txais kev tsim kho zoo tshaj plaws thiab siv cov txiaj ntsig.
Ua ib qho tseem ceeb ntawm cov khoom siv grouting pob zeb,RDP tuaj yeem txhim kho qhov kev nplaum, kev ywj pheej, kev tiv thaiv dej thiab kev tiv thaiv huab cua ntawm cov ntaub ntawv grouting., thiab txhim kho kev ua tau zoo ntawm kev tsim kho thiab cov khoom tiav zoo. Nws daim ntawv thov hauv pob zeb ntuj, marble thiab granite tuaj yeem pab txuas lub neej ntawm qhov project thiab tswj qhov zoo nkauj ntawm cov pob zeb tiav. Yav tom ntej, nrog rau kev txhim kho ntawm kev ua tau zoo thiab ib puag ncig RDP, cov kev daws teeb meem pob zeb grouting yuav raug txhim kho ntxiv mus rau lub zog siab, qis shrinkage thiab lub sijhawm ntev.
Lub sijhawm tshaj tawm: Lub Xya Hli-22-2025