Cellulose ether cov khoom siv dav siv los txhim kho kev ua haujlwm ntawm cov khoom siv hydraulic, xws li gypsum thiab cement. Hauv gypsum thiab cement-based mortars, nws txhim kho cov dej tuav, ncua kev kho thiab qhib lub sij hawm, thiab txo qis sagging.
1. Kev tuav dej
Cellulose ether tiv thaiv kev ya raws los ntawm kev nkag mus rau hauv phab ntsa. Tus nqi tsim nyog ntawm cov dej nyob twj ywm hauv mortar, kom cov gypsum thiab cement muaj sijhawm ntev dua los ua kom dej. Cov dej tuav yog ncaj qha proportional rau lub viscosity ntawm cellulose ether tov nyob rau hauv mortar. Qhov siab dua qhov viscosity, qhov dej tuav tau zoo dua. Thaum cov dej noo ntau ntxiv, cov dej tuav tau qis. Vim hais tias rau tib tus nqi ntawm cellulose ether tov, qhov nce hauv dej txhais tau tias txo qis hauv viscosity. Kev txhim kho ntawm kev tuav dej yuav ua rau txuas ntxiv ntawm lub sijhawm kho ntawm lub mortar tau tsim.
2. Txo cov viscosity thiab txhim kho kev ua haujlwm
Qhov qis dua qhov viscosity ntawm cellulose ether siv, qhov qis dua qhov viscosity ntawm mortar thiab yog li ua haujlwm tau zoo dua. Txawm li cas los xij, tsis tshua muaj viscosity cellulose ether muaj ntau npaum li cas vim nws tsis tshua muaj dej tuav.
3. Anti-sagging
Ib qho zoo sag-resistant mortar txhais tau hais tias lub mortar siv nyob rau hauv tuab txheej tsis muaj kev phom sij ntawm sagging los yog khiav downwards. Sag kuj tuaj yeem txhim kho los ntawm cellulose. Cellulose ether tuaj yeem muab qhov zoo dua sag tsis kam ntawm mortar.
4. Cov ntsiab lus npuas
Cov huab cua npuas cov ntsiab lus ua rau zoo dua mortar tawm los thiab ua haujlwm tau zoo, txo qis kev tawg. Nws kuj txo qis tus nqi siv, ua rau "liquefaction" tshwm sim. Cov ntsiab lus ntawm huab cua npuas feem ntau yog nyob ntawm lub sijhawm nplawm.
Post lub sij hawm: Feb-10-2023