Raws li lub cim tshiab ntawm cov dej ua haujlwm siab txo tus neeg sawv cev ntawm poly carboxylic acid cov qauv txheej txheem dej txo tus neeg sawv cev muaj qhov zuag, thiab zoo hloov mus rau cov cement, cov tshuaj me me, cov dej siab txo tus nqi, ua rau cov qhob lav kom poob qis kev sib deev zoo, kev ua haujlwm zoo, thiab kov yeej naphthalene series dej txo tus neeg sawv cev nrog qhov tsis zoo xws li formaldehyde hauv kev tsim khoom, tshwj xeeb tshaj yog tsim nyog rau kev tsim cov tshuab ua kom siab, kev tshawb fawb thiab dav hauv xyoo tsis ntev los no kev txhim kho sai sai, tab sis los ntawm kev lag luam muag tam sim no ntawm poly carboxylic acid dej txo tus neeg sawv cev ntau yam thiab faib tawm, chav haujlwm ntawm poly carboxylic acid dej txo tus neeg sawv cev thov kev txhawb nqa tseem nyob hauv nws thaum tseem yau, nws muaj cov ntawv thov dav.
Hauv kev sim piv ntawm polycarboxylic acid series dej tsim tawm thiab naphthalene series dej reducer, cov yam ntxwv ua tau zoo ntawm ob hom dej reducer tau kawm raws li hauv qab no:
1. Qhov dej txo tus nqi ntawm polycarboxylate superplasticizer yog qhov siab tshaj qhov ntawm naphthalene superplasticizer. Raws li qhov dej txo tus nqi, cov ntsiab lus ntawm polycarboxylate superplasticizer tau qis tshaj qhov ntawm naphthalene superplasticizer.
2. Qhov kev tiv thaiv qis ntawm polycarboxylate superplasticizer yog qhov ua tau zoo dua li ntawm naphthalene superplasticizer. Qhov loj fluidity cov pob zeb npaj nrog polycarboxylate superplasticizer tseem tuaj yeem mus txog qhov nqus pom tom qab 1h;
3. Nrog rau qhov nce ntawm cov ntsiab lus, qhov dej tsis pub txo qis ntawm polycarboxylate superplasticizer yog qhov ntau ntau dua li ntawm naphthalene series, uas tau pib ua tiav qhov kev txwv thaum cov ntsiab lus ntawm naphthalene series superplasticizer yog txog 2.0%, uas qhia tau tias polycarboxylate superplasticizer yog ntau tsim rau kev npaj cov pob zeb ua nrog cov dej tsawg-xis mas thiab muaj zog siab.
Cov txiaj ntsig pom tau hais tias, piv nrog naphthalene series dej tsim tawm, polycarboxylic acid dej tso tawm tau zoo dua cov dej hloov dua tshiab, kev noj ntau dua, dej siab dua, txo qis pob zeb ua kom poob, thiab yog qhov tsim nyog dua rau kev npaj cov pob zeb ua dej nrog cov dej piv ua kom tsawg.
Yog li ntawd, ntxiv rau cov dej siab ua kom tau txais txiaj ntsig, cov dej tso dej txo tus neeg ua hauj lwm kuj yuav tsum muaj peev xwm tswj hwm cov pob zeb ua kom muaj kev puas tsuaj, tab sis cov dav dav dej siab txo tus neeg sawv cev feem ntau tsis txog qhov yuav tsum ua.
