Kev tsim kho mortars yog dav siv nyob rau hauv ntau daim ntawv thov nyob rau hauv kev tsim kho kev lag luam xws li plastering, flooring, pobzeb thiab masonry, thiab lwm yam. Mortar feem ntau yog ib tug sib tov ntawm cement, xuab zeb thiab dej tov los ua ib tug muab tshuaj txhuam. Nyob rau hauv xyoo tas los no, muaj kev xav tau ntau ntxiv rau cov khoom siv ntxiv uas txhim kho kev ua haujlwm ntawm mortars. Redispersible polymer hmoov (RDP) yog ib qho khoom siv nrov tshaj plaws uas tau ntxiv rau kev tsim kho mortars los txhim kho lawv cov khoom. Kab lus no yuav muab cov ntsiab lus ntawm lub luag haujlwm ntawm RDP redispersible polymer hmoov additives hauv kev tsim kho mortars.
Redispersible polymer hmoov yog ib qho polymer uas muaj ethylene-vinyl acetate copolymer, acrylic acid thiab yas acetate. Cov polymers no tau sib xyaw nrog lwm cov khoom ntxiv xws li muab tub lim, thickeners thiab binders los tsim RDP hmoov. RDP hmoov yog siv los tsim ntau yam khoom siv nrog rau cov pobzeb nplaum, cement-based mortars thiab leveling agents.
Ib qho txiaj ntsig tseem ceeb ntawm kev siv RDP hauv kev tsim mortars yog tias nws txhim kho kev ua haujlwm ntawm cov mortar. RDP nce qhov sib xws ntawm cov mortar, ua kom yooj yim rau kev thov thiab sib kis. Txhim kho kev ua tau zoo kuj txhais tau hais tias yuav tsum muaj dej tsawg dua kom ua tiav qhov kev xav tau sib xws. Qhov no ua rau cov mortar ntau resistant rau cracking thiab shrinkage, ua rau nws ntau check thiab kav ntev.
Lwm qhov txiaj ntsig tseem ceeb ntawm kev siv RDP hauv kev tsim mortars yog tias nws txhim kho qhov adhesion ntawm cov tshuaj khib. Txhim kho adhesion txhais tau hais tias lub mortar tsim kom muaj kev sib raug zoo nrog rau qhov chaw kom ua tau zoo dua thiab ua haujlwm ntev. RDP kuj tseem txhim kho cov dej tuav cov khoom ntawm cov mortar, pab tiv thaiv dej poob thaum tsim kho. Qhov no tso cai rau lub mortar teem thiab harden ntau tusyees, kom ntseeg tau tias kev ua tau zoo thiab durability.
RDP kuj ua rau kom qhov hloov tau yooj yim ntawm cov tshuaj khib nyiab, ua kom nws muaj peev xwm tiv taus kev ntxhov siab ntev thiab hnyav. Qhov ua kom yooj yim ntawm cov mortar txhais tau hais tias nws tsis tshua muaj kev tawg thiab tawg txawm tias raug rau ib puag ncig hnyav. Qhov kev hloov kho tau yooj yim no kuj txhais tau hais tias cov mortar yog ntau yam thiab tuaj yeem siv rau hauv ntau yam kev siv, nrog rau qhov tsis sib xws thiab nkhaus.
Kev siv RDP hauv kev tsim mortar kuj ua rau kom muaj zog ntawm cov mortar. Compressive lub zog yog cov cuab yeej tseem ceeb ntawm lub tsev mortars vim nws txiav txim siab seb lub mortar tiv thaiv deformation thiab tawg hauv qab load. RDP tsub kom lub zog compressive ntawm lub mortar, ua kom nws zoo dua tuaj yeem tiv taus cov khoom hnyav thiab txo qhov kev pheej hmoo ntawm kev tawg thiab kev puas tsuaj.
Hauv cov ntsiab lus, kev siv RDP redispersible polymer hmoov additives hauv kev tsim mortars muaj ntau yam zoo uas tuaj yeem txhim kho kev ua haujlwm thiab ua haujlwm ntev ntawm cov mortar. RDP txhim khu kev ua hauj lwm, adhesion, dej tuav, yooj thiab compressive lub zog ntawm lub mortar, ua rau nws ntau yam thiab haum rau ntau yam kev siv. Kev siv RDP hauv kev tsim mortars ua rau cov khoom siv tau zoo dua, muaj txiaj ntsig zoo thiab ruaj khov, ua rau nws muaj kev xaiv nrov rau cov neeg tsim khoom thiab cov neeg cog lus.
Post lub sij hawm: Jun-29-2023