Hnub Kawg: 23 Lub Kaum Hli, 2023
Cov neeg ua dej txo cov neeg ua haujlwm tsim cov tshuaj txo cov dej, thiab thaum lawv muag cov tshuaj txo cov dej, lawv tseem yuav muab cov ntawv sib xyaw ntawm cov tshuaj txo cov dej. Cov dej-cement ratio thiab qhob mix ratio cuam tshuam rau kev sivpolycarboxylate superplasticizer. Polycarboxylate superplasticizersyog rhiab heev rau kev siv dej ua vaj tse. Thaum npaj C50 pob zeb nyob rau hauv ib qhov project ntawm, qhov pib tsim Dej-cement piv yog 0.34%. Qhov kev ntsuam xyuas pom tias cov dej ntws tsis zoo, yog li qhov sib piv ntawm Dej-cement tau hloov kho rau 0.35%, thiab cov dej siv ib lub cubic meter tau nce los ntawm ob peb kilograms.
Txawm hais tias qhov slump tau nce, tseem muaj qhov loj ntawm seepage thiab txawm tias kev sib cais, uas cuam tshuam rau tag nrho cov uniformity ntawm cov pob zeb. Ntxiv ib qho me me ntawm cov dej tuav pov hwm tau ua rau muaj teeb meem ntau rau chav tsev tsim kho. Cov xuab zeb piv ntawm cov pob zeb tseem cuam tshuam rau daim ntawv thov cov nyhuv ntawm poly Carboxylate superplasticizer. Thaum siv cov dej ua kom muaj txiaj ntsig zoo txo cov neeg ua haujlwm, cov xuab zeb sib piv tuaj yeem tsim nyog nce thiab fluidity ntawm pob zeb tuaj yeem txhim kho.
Thaum tov nrogpolycarboxylate superplasticizer, cov xuab zeb piv yog siab thiab cov fluidity ntawm pob zeb tsis zoo. Cov khoom saw ntawmpolycarboxylate superplasticizerhom dej txo cov neeg ua haujlwm nrog huab cua nkag muaj carboxyl adsorption noob thiab muaj coob tus ceg. Polyether side chains muab steric hindrance, thaum polyethers muaj ntau breathable zog.
Vim qhov sib txawv ntawm cov txheej txheem ntau lawm thiab qhov hnyav molecular sib txawv ntawm cov khoom siv raw siv los ntawm cov tuam txhab sib txawv, kuj tseem muaj qhov sib txawv ntawm huab cua nkag. Ntawm ntau cov khoom siv poly Carboxylate superplasticizer peb tau sim, qhov qis los ntshav tsuas yog 3%, qhov siab dua yog 6%, thiab qee yam khoom txawm tias mus txog 8%.
Yog li ntawd, thaum siv cov dej ua kom muaj txiaj ntsig zoo txo cov neeg ua haujlwm, nws yog qhov yuav tsum tau ua qhov kev sim ua ntej siv, thiab tom qab ntawd sib tov raws li qhov tseeb ntawm qhov project.
Post lub sij hawm: Oct-23-2023
