Qhuav-sib xyaw mortar yuav tsum muaj ntau hom admixtures nrog cov txheej txheem sib txawv ntawm kev ua kom sib luag, thiab tsuas yog npaj tau los ntawm ntau qhov kev sim. Piv nrog rau cov pob zeb sib xyaw ua ke, cov khoom siv khib nyiab qhuav tuaj yeem tsuas yog siv rau hauv cov hmoov hmoov, thiab qhov thib ob, lawv tau soluble hauv dej txias, lossis maj mam yaj nyob rau hauv qhov kev txiav txim ntawm alkali kom ua tiav lawv cov txiaj ntsig.
Lub luag haujlwm tseem ceeb ntawm redispersible latex hmoov yog los txhim kho cov dej tuav thiab ruaj khov ntawm cov tshuaj khib. Txawm hais tias nws tuaj yeem tiv thaiv cov khib nyiab tawg (tso qis dej evaporation tus nqi) rau qee qhov, nws feem ntau tsis siv los ua ib qho kev txhim kho mortar toughness, tawg tsis kam thiab dej tsis kam.
Ntxiv cov hmoov polymer tuaj yeem txhim kho qhov impermeability, toughness, tawg tsis kam thiab cuam tshuam tsis kam ntawm mortar thiab pob zeb. Kev ua tau zoo ntawm redispersible latex hmoov yog qhov ruaj khov, thiab nws muaj txiaj ntsig zoo rau kev txhim kho lub zog ntawm cov tshuaj khib nyiab, txhim kho nws cov tawv tawv, deformability, tawg tsis kam thiab impermeability. Ntxiv hydrophobic latex hmoov kuj tseem tuaj yeem txo cov dej nqus ntawm cov tshuaj khib (vim nws cov hydrophobicity), ua rau cov mortar breathable thiab impervious rau dej, txhim khu nws cov huab cua tsis kam, thiab txhim kho nws durability.
Piv nrog rau kev txhim kho lub zog flexural thiab kev sib txuas lub zog ntawm cov tshuaj khib thiab txo nws cov brittleness, cov nyhuv ntawm redispersible latex hmoov rau kev txhim kho cov dej tuav thiab cohesion ntawm mortar yog txwv. Txij li thaum qhov sib ntxiv ntawm redispersible latex hmoov tuaj yeem tawg thiab ua rau muaj huab cua ntau hauv cov tshuaj khib sib tov, nws cov dej-txo cov nyhuv yog pom tseeb heev. Ntawm chav kawm, vim cov qauv tsis zoo ntawm cov cua npuas tau qhia, cov nyhuv txo dej tsis tuaj yeem txhim kho lub zog. Ntawm qhov tsis sib xws, lub zog ntawm cov tshuaj khib yuav maj mam txo nrog qhov nce ntawm cov khoom siv latex redispersible. Yog li ntawd, nyob rau hauv txoj kev loj hlob ntawm ib co mortars uas yuav tsum tau xav txog lub compressive thiab flexural zog, nws yog ib qhov tsim nyog yuav tau ntxiv ib tug defoamer tib lub sij hawm thiaj li yuav txo tau qhov tsis zoo ntawm latex hmoov ntawm lub compressive zog thiab flexural zog ntawm lub mortar. .
Post lub sij hawm: Mar-10-2023