Redispersible polymer hmoov (RDP) yog cov hmoov polymer uas siv dav hauv kev tsim kho kev lag luam los txhim kho cov khoom ntawm mortar thiab lwm yam ntaub ntawv cementitious. Thaum ntxiv rau mortar sib tov, RDP pab tsim kom muaj kev sib koom ua ke uas ua rau cov khoom muaj zog, ua haujlwm ntev thiab ua haujlwm rau huab cua, tawg thiab tshuaj tua kab mob. Kab lus no yuav tsom mus rau cov txiaj ntsig zoo ntawm RDP ntawm cov khoom siv tawv tawv, suav nrog nws lub peev xwm los ua kom muaj zog, txhim kho kev sib raug zoo, txhim kho kev ua haujlwm, thiab txo qis.
nce zog
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm RDP tshaj cov tshuaj khib nyiab yog nws lub peev xwm los ua kom lub zog ntawm cov khoom. Qhov no yog ua tiav los ntawm kev txhim kho hydration thiab kho ntawm cov cement hais, ua rau cov khoom siv denser thiab denser. Cov polymers nyob rau hauv RDP ua raws li ib tug binder, sau qhov sib txawv ntawm cov cement hais thiab tsim ib tug muaj zog daim ntawv cog lus. Qhov tshwm sim yog ib qho tshuaj khib nrog ntau dua compressive thiab tensile lub zog, ua rau nws tiv taus kev ntxhov siab, cuam tshuam thiab deformation.
txhim kho adhesion
Lwm qhov txiaj ntsig zoo ntawm RDP ntawm cov tshuaj khib nyiab yog nws lub peev xwm los txhim kho kev sib raug zoo. RDP ua raws li tus neeg sawv cev txuas ntawm cov cement particles thiab substrate nto, txhim kho qhov adhesion ntawm ob cov ntaub ntawv. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov xws li pobzeb, qhov twg cov mortar yuav tsum tau ua raws li cov substrate thiab nto ntawm cov pobzeb. RDP ua kom muaj kev ruaj khov thiab kav ntev uas tuaj yeem tiv taus kev ntxhov siab thiab kev siv txhua hnub.
Txhim kho kev ua haujlwm
RDP kuj tseem txhim kho kev ua haujlwm ntawm cov mortar, ua kom yooj yim rau kev sib tov, thov thiab ua tiav. Cov polymers hauv RDP ua cov roj nplua nyeem, txo kev sib txhuam ntawm cov cement hais kom lawv txav tau yooj yim dua. Qhov no ua rau cov tshuaj khib nyiab ntau dua thiab yooj yim rau kev ua haujlwm nrog, ua rau kev tsim kho kom yooj yim dua thiab dav dua. Qhov tshwm sim yog cov khoom siv nrog cov khoom zoo sib xws thiab siv tau yooj yim dua ntawm ntau yam kev mob.
txo shrinkage
Ib qho ntawm cov teeb meem nrog kev ua hauj lwm nrog mortar yog tias nws nyhav zuj zus thaum nws qhuav thiab kho. Shrinkage tuaj yeem ua rau cov kab nrib pleb tsim hauv cov khoom, cuam tshuam nws qhov ruaj khov thiab kav ntev. RDP tuaj yeem pab txo qis qis los ntawm kev tswj kom qhuav thiab kho cov txheej txheem ntawm cov khoom. Cov polymers nyob rau hauv RDP tsim ib zaj duab xis nyob ib ncig ntawm cov cement particles uas ua raws li ib tug barrier rau ya raws. Qhov no ua rau cov txheej txheem ziab kom qhuav thiab tso cai rau cov dej kom zoo dua nyob rau hauv cov khoom siv, txo cov sij hawm ntawm shrinkage thiab tawg.
nyob rau hauv xaus
Cov txiaj ntsig zoo ntawm RDP ntawm cov tshuaj khib nyiab yog ntau heev thiab tseem ceeb. Thaum ntxiv rau cov khoom sib tov sib xyaw, RDP nce lub zog, txhim kho kev sib raug zoo, txhim kho kev ua haujlwm thiab txo qis qis. Cov txiaj ntsig zoo no ua rau RDP yog ib qho cuab yeej tseem ceeb rau cov kws tshaj lij kev tsim kho uas xav tsim cov khoom zoo, ruaj khov thiab kav ntev thiab cov tsev. Raws li kev tsim kho kev lag luam txuas ntxiv txhim kho thiab cov ntaub ntawv tshiab thiab thev naus laus zis tshwm sim, RDP yuav tseem yog ib feem tseem ceeb ntawm cov neeg tsim khoom thiab cov neeg cog lus thoob ntiaj teb.
Post lub sij hawm: Aug-30-2023