Superplasticizer (i)

Hnub Tim: 9, Tsib Hlis, 2022

(一) Qhov yoog tau ntawmPolycarboxylate Superplasticizer thiab cov khoom siv xis:

Hauv kev xyaum, nws tau pom tiasPolycarboxylate SuperplasticizerMuaj cov teeb meem pom tseeb rau cov kev sib txawv thiab sib txawv ntawm cov ntxhia admixtures, thiab qee zaum lawv yog tus tuaj yeem heev. Qhov yoog tau ntawm cement thiabPolycarboxylate Superplasticizer yuav raug cuam tshuam los ntawm ntau yam. Xws li: cov khoom siv xiss, thaj chaw tshwj xeeb, cov ntsiab lus Alkali, Gypsum cov ntsiab lus thiab ntau yam muaj kev cuam tshuam ntawm kev yoog raws liPolycarboxylate Superplasticizer.

Lub ntsiab lus sururation ntawmPolycarboxylate Superplasticizerrau cov sacts sib txawv yog qhov sib txawv, cov dej txo qis yog txo qis, cov teeb meem tsis txaus siab "tshwm sim thaum los ntshav, kev ua yeeb yam thiab cais tawm, thiab nyuaj hauv kev nqus , Rhiab rau ntau npaum li cas, cov pob zeb ua tsis tau qhib lossis tso tawm ntau dhau. Piv txwv li, cov ntsiab lus ntawmPolycarboxylate Superplasticizer rau cov cement yog 1.8% (cov ntsiab lus muaj txiaj ntsig ntawm 10%) kom tau txais lub xeev zoo, thiab qee zaum nws tau ua kom zoo dua li 2.2% ntawm kev siv tshuaj, cov qhob sib xyaw muaj kev los ntshav.

Tam sim no, nyob rau hauv cov nqe lus ntawm qhov yoog tau ntawmPolycarboxylate Superplasticizer, cov kev daws teeb meem muaj raws li nram no:

(1) ntawm kev ua kom zoo ntawm kev ua kom muaj zog ntawm cov pob zeb ua, los kho cov xuab zeb, qhov loj me ntawm cov ntxhib aggregate, thiab nce cov pob zeb ua cov txheej txheem slurry;

(2) Tus niam cawv yog muab tso nrog Ether lipids thiab cov tshuaj ntau ntxiv kom tau nce ntxiv. Feem ntau, nws raug pom zoo tias cov lus li cas thiab cov Lipids 5: 5 muaj cov nyhuv zoo dua, thiab ntau npaum li cas ntau npaum li cas los 0.2%;

(3) Kev ntxiv ntxiv lossis hloov nws cov khoom siv, siv sodium cov neeg sawv cev, ua npuas dej, phosphate, atm, citric acid, hloov cov hmoov txhuv nplej siab thiab lwm yam composite retarders, siv soluble cellulose, xanthan ntawm cov pos hniav, dextrin, hloov soluble Thickener, lossis ntxiv "Sulphur" lossis "Alkali" rau pob zeb ua tau zoo tuaj yeem hloov kho;

(4) Hloov cov qauv molecular ntawm polycarboxylic acid, thiab kho qee yam hauv synthemes los kho nws cov kev yoog raws.

Rau inshixtures, tus cawv ntawm cov yoov tshauv yog obviously ntau dua li ntawm cov hmoov uas tsis zoo. Feem ntau hais lus, thawj qib FLAY muaj kev yoog tau zoo, thaum thib peb ya cov hmoov tshauv, tshwj xeeb tshaj yog thib peb-qib ya tshauv. Thaum cov ntoo tshauv zoo yog qhov tsis zoo, cov nyhuv ntawm kev nce ntau npaum li cas ntawmPolycarboxylate SuperplasticizerHauv lub sijhawm tseem tsis tuaj yeem hloov kho. Qhov laj thawj tseem ceeb rau qhov tshwm sim no yog tias cov ntsiab lus carbon thiab tertiation ntawm admixtures yog loj, muaj feem xyuam rau cov pob zeb flourity. Thaum siv qib III FLAS PEATH, nce cov ntsiab lus ntawm polycarboxylate dej reducer los ntawm ntau dua 50%, txhawm rau kom ua tiav cov dej txo thaum qib tshauv ib ya. Nyob rau hauv lub ntsej muag ntawm niaj hnub no cov nplaim dej tshauv nrog cov khoom zoo sib txawv thiab nws yog ib qho tsim nyog los txhawb kev tswj hwm yoov thiab ntxiv dag zog thaum siv Polycarboxylate Superplasticizer.