Admixtures uas tuaj yeem txo cov nqi sib xyaw dej Superplasticizer

Cov dej txo tus nqi ntawm cov dej txo cov neeg ua haujlwm siab tuaj yeem ncav cuag ntau dua 20 feem pua. Feem ntau yog cov naphthalene series, melamine series thiab dej txo cov neeg ua haujlwm sib xyaw ua ke los ntawm lawv, ntawm cov naphthalene series yog qhov tseem ceeb, suav txog 67 feem pua. Tshwj xeeb tshaj yog nyob rau hauv kuv lub teb chaws, feem ntau ntawm cov high-efficiency dej reducers yog naphthalene-raws li Superplasticizer high-efficiency dej reducers nrog naphthalene ua raw khoom. Naphthalene-based high-efficiency dej reducers tuaj yeem muab faib ua cov khoom siv siab (Na2SO4 cov ntsiab lus<3%), medium-concentration="" products="" na2so4="" content="" to="" and="" low-concentration="">10 feem pua). Feem ntau cov naphthalene-based high-efficiency water reducer synthesis nroj tsuag muaj peev xwm tswj tau cov Na2SO4 cov ntsiab lus hauv qab 3 feem pua, thiab qee qhov kev lag luam siab heev tuaj yeem tswj tau qis dua 0.4 feem pua.

Naphthalene-raws li dej reducer yog cov khoom siv ntau tshaj plaws thiab siv dav siv cov dej ua kom muaj txiaj ntsig zoo Superplasticizer hauv kuv lub teb chaws (sau ntau dua 70 feem pua ​​​​ntawm cov dej txo qis), uas yog tus cwj pwm los ntawm cov dej txo qis (15 feem pua ​​​​rau 25. feem pua ​​), tsis muaj huab cua, muaj kev cuam tshuam me ntsis rau lub sijhawm teem sijhawm, muaj qhov hloov tau zoo rau cov cement, tuaj yeem siv ua ke nrog ntau yam khoom sib xyaw, thiab yog tus nqi pheej yig. Naphthalene-raws li dej reducers feem ntau yog siv los npaj cov kua dej ntau, muaj zog, muaj zog ua haujlwm siab. Kev poob qis ntawm cov pob zeb sib xyaw nrog naphthalene-raws li dej txo tus neeg sawv cev yog ceev ceev. Tsis tas li ntawd, kev hloov pauv ntawm naphthalene-raws li dej reducers rau qee cov cements yuav tsum tau txhim kho.