Hmoov Polymer uas yaj tau dua (RDP), ua ib qho tseem ceeb polymer additive, tau siv dav hauv xyoo tas los no hauv cov mortar qhuav-mix, vuas vov nplaum, hmoov putty, plastering mortar, thiab grout. Nws daim ntawv thov hauv vuas vov yog qhov tshwj xeeb hauv kev txhim kho lub zog sib txuas, kev ywj pheej, kev tiv thaiv tawg, thiab kev tiv thaiv dej.
1. Txoj Kev Ua Haujlwm ntawm RDP
RDP yog ib hom hmoov uas tawg tau dua los ntawm cov polymer emulsion los ntawm kev siv cov txheej txheem ziab kom qhuav, uas muaj cov yam ntxwv ntawm kev rov ua kom emulsification thaum kov dej. Thaum ntxiv RDP rau hauv cov grout, thaum dej qhuav thaum lub sijhawm tsim kho, cov khoom RDP rov tawg dua los ua ib zaj duab xis polymer tas mus li. Zaj duab xis polymer no sib xyaw nrog cov khoom siv cement hydration, tsim ib qho "inorganic-organic composite system," txhim kho cov khoom siv kho tshuab thiab cov yam ntxwv sib txuas ntawm cov khoom siv.
Thaum lub sijhawm kho cov grout, cov zaj duab xis polymer RDP tuaj yeem txheej cov khoom me me, txhim kho kev sib txuas ntawm cov interfacial thiab txo qhov porosity ntawm lub kaw lus cement. Ntxiv mus, cov ntu yooj ywm hauv RDP molecules muab qee qib ntawm kev ductility thiab tiv thaiv kev deformation, zoo tiv thaiv cov kab nrib pleb los ntawm kev hloov pauv kub lossis kev deformation substrate.
2. Kev Txhim Kho RDP ntawm Kev Ua Haujlwm ntawm Pobzeb Grout
2.1. Kev Txhim Kho Lub Zog Sib Koom Tes
Qhov yuav tsum tau ua ntej rau cov grout pobzeb yog kev nplaum zoo rau cov npoo pobzeb thiab cov khoom siv hauv pem teb. RDP tsim cov zaj duab xis polymer organic, ua rau qhov sib txuas ntawm cov cement-based grout thiab cov pobzeb nto sib txuas ruaj khov dua. Tib lub sijhawm, cov polymer residue tom qab cov tshuaj tiv thaiv hydration ntawm RDP ua rau cov txheej txheem sib txuas ntom ntom dua, yog li txhim kho qhov sib txuas ntawm cov grout thiab kev ruaj khov.
2.2. Kev Ywj Pheej Zoo Dua thiab Kev Tiv Thaiv Kev Tawg
Cov grouts uas siv cement ib txwm muaj feem yuav tawg me me thaum ziab, ua rau ntsws lossis hloov pauv kub, cuam tshuam rau kev zoo nkauj thiab kev ua haujlwm tiv thaiv dej. Kev qhia txog cov khoom polymer hauv RDP txhim kho qhov yooj ywm thiab ductility ntawm cov khoom, ua rau cov txheej grout tiv taus qee qhov kev ntxhov siab thiab kev hloov pauv yam tsis muaj kev tawg, yog li ua rau nws lub neej ua haujlwm ntev dua.
2.3. Txhim Kho Kev Tiv Thaiv Dej Thiab Kev Tsis Taus Dej
Cov zaj duab xis polymer txuas ntxiv uas tsim los ntawm RDP muaj qhov coefficient permeability qis, zoo tiv thaiv kev nkag mus rau hauv dej thiab txo qhov nqus dej. Cov khoom no tseem ceeb heev rau hauv cov chaw ntub dej xws li chav ua noj thiab chav dej, zoo tiv thaiv cov dej noo kom tsis txhob nkag mus rau tom qab ntawm cov vuas lossis cov khoom siv raws li qhov sib txawv, txo qhov kev pheej hmoo ntawm pwm thiab hollowing.
2.4. Kev Tiv Thaiv Kev Sib Txhuam Thiab Kev Tiv Thaiv Xim Av Zoo Dua
RDP zoo ua rau qhov ntom ntawm cov grout zoo dua, ua rau nws du dua, tiv taus kev txhuam ntau dua, thiab txo cov av nplaum. RDP-modified grout tsis tshua muaj hmoov av sib sau ua ke lossis hloov xim thaum ntxuav txhua hnub, ua kom nws zoo nkauj ntev dua.
2.5. Kev Ua Haujlwm Zoo Dua ntawm Daim Ntawv Thov
RDP ua rau kev siv cov grout zoo dua qub thiab khaws dej ntawm cov grout, ua rau kev siv du thiab yooj yim dua los sau cov qhov sib txawv, thiab txo cov voids thiab cov pa npuas. Tib lub sijhawm, nws cov nyhuv khaws dej ua rau qeeb qeeb ntawm cov dej ntawm cov cement, muab sijhawm ntau rau cov neeg ua haujlwm rau kev siv thiab txhim kho qhov zoo thiab kev ua haujlwm ntawm kev siv.
3. Kev Ua Haujlwm ntawm Daim Ntawv Thov RDP hauv Ntau Hom Grout
3.1. Cov Pob Zeb Uas Muaj Cement
Ntxiv RDP rau hauv cov cement-based grout zoo heev txhim kho qhov kev nplaum thiab kev tawg, ua rau nws tsim nyog rau kev grouting sab hauv tsev thiab sab nraum zoov phab ntsa thiab pem teb vuas.
3.2. Epoxy los yog High-Performance Grout
Rau cov qauv grout siab kawg uas xav tau kev tiv thaiv kev hnav thiab kev tsis nkag, RDP, ua tus hloov kho, ua haujlwm ua ke nrog lwm cov resins los txhim kho kev ywj pheej thiab kev nplaum.
3.3. Cov xim av nplaum
Cov yam ntxwv tsim cov yeeb yaj kiab RDP pab ua kom muaj kev faib cov xim sib npaug, txhim kho cov xim kom ruaj khov, tiv thaiv kev sib txawv ntawm cov xim thiab kev tawm paj, thiab ua rau cov xim grouts zoo nkauj dua.
4. Tus nqi ntawm daim ntawv thov thiab kev loj hlob ntawm RDP
Hauv kev xaus, tus nqi thov ntawm RDP hauv cov vuas grout feem ntau yog pom tseeb hauv cov hauv qab no:
Kev Ruaj Ntseg ntawm Cov Khoom Siv: Los ntawm kev txhim kho kev nplaum, kev tiv thaiv dej, thiab kev ywj pheej, cov grout tswj tau qhov ua tau zoo heev hauv ntau qhov chaw sib txawv.
Kev Pab Cuam Ntev: Txhim kho kev tiv thaiv kab nrib pleb thiab kev tiv thaiv kev hnav, txo cov nqi kho tom qab.
Txhim kho kev paub txog kev tsim kho thiab qhov zoo ntawm cov khoom tiav: Txhim kho kev ua haujlwm tau zoo thiab kev khaws dej, txo cov teeb meem ntawm kev tsim kho.
Ua raws li kev coj ua ntawm cov ntaub ntawv tsim kho ntsuab: RDP yog cov khoom siv tsis muaj kuab tshuaj, VOC qis, ua tau raws li cov kev cai tiv thaiv ib puag ncig thiab pab txhawb rau kev tsim cov txheej txheem tsim kho ntsuab.
Thaum kev lag luam kho kom zoo nkauj hauv tsev txhim kho mus rau qhov ua tau zoo, kev tiv thaiv ib puag ncig, thiab kev zoo nkauj, lub luag haujlwm ntawm RDP hauv cov pob zeb grout yuav tseem ceeb zuj zus. Kev tshawb fawb thiab kev txhim kho yav tom ntej yuav tsom mus rau kev tsim cov kab ke polymer uas muaj kev tiv thaiv huab cua ntau dua, kev nqus dej tsawg dua, thiab kev nplaum zoo dua kom tau raws li qhov xav tau ntawm kev siv hauv qab huab cua sib txawv thiab cov xwm txheej kev tsim kho.
Ua ib qho khoom siv hloov kho tseem ceeb hauv cov pob zeb grout,RDPtuaj yeem txhim kho nws cov khoom siv kho tshuab, tiv taus kev tawg, tiv taus dej, thiab ua haujlwm tau zoo, ua rau nws yog ib qho khoom siv tseem ceeb rau kev ua tiav cov txiaj ntsig zoo ntawm kev kho kom zoo nkauj hauv tsev. Nws txoj kev siv dav dav tsis yog tsuas yog ua kom zoo dua qhov kev ua tau zoo ntawm cov grout xwb tab sis kuj muab kev txhawb nqa zoo rau kev tsim cov ntaub ntawv ntsuab thiab txuag hluav taws xob hauv tsev.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-05-2025