Khoom Khoom Ntawm Polycarboxylic Superplasticizer

Polycarboxylic superplasticizer yog ib tiam thib peb-tiam dej-txo cov neeg ua haujlwm siab tau tsim los tom qab cov dej txo qis uas sawv cev los ntawm cov ntoo calcium thiab cov dej-txo cov neeg ua haujlwm siab uas sawv cev los ntawm naphthalene. Nws zoo nkaus li lub teeb daj lossis xim liab-xim av pob tshab. Cov khoom tseem ceeb yog polycarboxylic polymers nrog qhov hnyav molecular ntawm 5, 000 txog 50, 000. Qhov no series ntawm cov dej-txo cov neeg ua ke muab cov khoom zoo xws li txo cov dej, txo qis, txhim kho lub zog, kev tiv thaiv shrinkage, thiab kev tiv thaiv ib puag ncig. Nws muaj txiaj ntsig zoo rau cov teeb meem ntawm cov viscosity siab thiab kev ua haujlwm tsis zoo hauv kev ua haujlwm siab thiab kev ua haujlwm siab, ua rau nws yog qhov zoo tshaj plaws ntxiv rau kev tsim cov pob zeb zoo li no. Raws li ntau tus neeg siv cov khoom no, cov neeg siv khoom muaj kev txhawj xeeb txog nws qhov kev ua tau zoo. Nov yog qee qhov kev nkag siab:

1. Tsawg npaum li cas, txo dej siab: Ntawm qhov ntau npaum li cas ntawm 1.0%, cov dej txo qis tshaj 35%.
2. Thaum ntxov muaj zog thiab siab zog: Lub zog thaum ntxov nce ntau dua 50%, thiab lub zog 28-hnub txhim kho ntau dua 30%, tshwj xeeb tshaj yog tsim rau cov pob zeb uas muaj cov hmoov tshauv ya ntau. Nyob rau hauv qhov tsawg npaum li cas, lub zog nce ntxiv nrog rau qhov ntau npaum li cas, tab sis ib zaug qhov pom tau ntau npaum li cas, kev nce ntxiv tsis txhim kho lub zog.
3. Tsawg Slump Loss: Lub slump tuav tus nqi yog zoo heev tom qab ib teev, seem ruaj khov ntawm qhov kub thiab txias, nrog rau kev nce ntxiv. Thaum qhov kub siab tshaj 20 degrees Celsius, muaj qhov poob qis me ntsis, tab sis nws tseem tuav tau tshaj 95%. Ntawm qhov kub siab tshaj 30 degrees Celsius, qhov poob qis tseem nyob ntawm 93%.
4. Kev ua haujlwm zoo ntawm pob zeb: Cov pob zeb sib xyaw nrog polycarboxylic superplasticizer tsis pom kev sib cais lossis los ntshav, txawm tias nyob rau theem siab, ua rau muaj xim zoo ib yam. Nws yog tshwj xeeb tshaj yog muaj txiaj ntsig rau kev tsim cov pob zeb ua haujlwm siab, nws tus kheej-leveling pob zeb, nws tus kheej compacting pob zeb, thiab cov dej ntshiab tiav pob zeb. Thaum tsim cov pob zeb muaj zog, kev ua haujlwm thiab kev sib koom ua ke zoo heev, ua kom sib xyaw yooj yim dua.
5. Durability: Pob zeb ua kom sib xyaw nrog cov khoom lag luam no nthuav dav, tsis muaj zog, tsis muaj zog, thiab ua kom muaj zog ntxiv rau cov neeg sawv cev dej dog dig.
6. Compatibility nrog ntau hom Cement thiab Admixtures: Nws daws tau qhov teeb meem zoo sib xws uas tau ntsib los ntawm lwm hom dej-txo cov neeg ua haujlwm nrog cov ntaub ntawv khi.

Qhov no xaus kev sib koom hnub no. Kuv vam tias cov ntaub ntawv no yuav pab tau rau cov uas xav yuav polycarboxylic superplasticizer. Borida tau ua tus xa khoom ntawm cov pob zeb ntxiv rau 18 xyoo, tshwj xeeb hauv kev kub ceev rail additives. Yog tias koj muaj lus nug txog kev ua vaj tse ntxiv, thov hu rau kuv.