Cov nyhuv ntawm cellulose ether ntawm tus kheej-leveling mortar

Self-levelling mortars cia siab rau lawv tus kheej qhov hnyav los tsim ib lub tiaj, du thiab ruaj khov ntawm lub substrate, tso cai rau lwm cov ntaub ntawv los yog sib koom ua ke, thaum ua tiav qhov loj, muaj txiaj ntsig ntawm kev tsim kho. Yog li ntawd, high fluidity yog ib qho tseem ceeb heev yam ntxwv ntawm ib tug mortar self-leveling mortar. Nws kuj tseem yuav tsum muaj qee qhov kev tuav dej thiab kev sib txuas ntawm lub zog, tsis muaj kev sib cais thiab kev sib cais, thiab ua rau adiabatic thiab tsis kub.

General self-leveling mortar yuav tsum tau zoo fluidity, tab sis qhov tseeb cement slurry ntws feem ntau tsuas yog 10-12cm; cellulose ether yog lub ntsiab npaj sib xyaw mortar additive, txawm hais tias tus nqi ntxiv yog tsawg heev, nws tuaj yeem txhim kho qhov kev ua tau zoo ntawm mortar, uas tuaj yeem txhim kho cov mortar sib xws, kev ua haujlwm, kev sib koom ua ke thiab kev tuav dej. Nws muaj lub luag haujlwm tseem ceeb hauv thaj chaw ntawm kev npaj sib xyaw mortar.

1 Fluidity

Cellulose ether muaj qhov cuam tshuam loj rau cov dej tuav, sib xws thiab ua haujlwm ntawm cov tshuaj khib nyiab. Tshwj xeeb tshaj yog raws li tus kheej-leveling mortar, fluidity yog ib qho ntawm cov cim tseem ceeb los ntsuas qhov kev ua tau zoo ntawm tus kheej. Lub fluidity ntawm mortar tuaj yeem hloov kho los ntawm kev hloov pauv ntawm cellulose ether nyob rau hauv qhov chaw ntawm kev ua kom ntseeg tau qhov qub muaj pes tsawg leeg ntawm mortar. Cov ntsiab lus siab dhau lawm yuav txo qhov fluidity ntawm mortar, yog li ntawd, tus nqi ntawm cellulose ether yuav tsum tau tswj nyob rau hauv ib tug tsim nyog ntau yam.

2 Kev tuav dej

Cov dej tuav khib nyiab yog ib qho tseem ceeb qhia txog kev ruaj ntseg ntawm cov khoom siv hauv cov cement mortar. Txhawm rau ua kom cov khoom siv gel ua kom muaj dej txaus, tus nqi tsim nyog ntawm cellulose ether tuaj yeem siv rau lub sijhawm ntev dua los khaws cov dej hauv mortar. Feem ntau, raws li tus nqi ntawm cellulose ether nce, cov dej tuav ntawm cov tshuaj khib kuj nce. Tsis tas li ntawd, viscosity ntawm cellulose ether muaj qhov cuam tshuam loj rau cov dej tuav ntawm cov tshuaj khib nyiab; qhov siab dua qhov viscosity, qhov zoo dua cov dej tuav.

3 Teem sijhawm

Cellulose ether muaj kev cuam tshuam ntawm cov tshuaj khib nyiab. Nrog rau qhov nce ntawm cellulose ether cov ntsiab lus, lub sij hawm teem ntawm mortar yuav ntev. Thiab nrog cov ntsiab lus siab ntawm cellulose ether, cov ntsiab lus thaum ntxov hydration hysteresis nyhuv ntawm cov cement yog pom tseeb dua.

4 Flexural zog thiab compressive zog

Feem ntau hais lus, lub zog yog ib qho ntawm cov kev ntsuam xyuas tseem ceeb ntawm cov cementitious cementitious khoom curing mix. Lub zog compressive thiab flexural zog ntawm mortar yuav raug txo thaum cov ntsiab lus ntawm cellulose ether nce.