Cov Tshuaj Sib Xyaws Txo Dej Zoo: Txhim Kho Kev Ua Haujlwm ntawm Cov Pob Zeb rau Kev Tsim Kho Ntsuab
Cov Ntawv Thov Tseem Ceeb
Cov tshuaj sib xyaw ua kom dej zoo (xws li cov tshuaj sib xyaw ua los ntawm polycarboxylate) yog cov tshuaj uas ua kom dej tsis sib xyaw zoo tshaj plaws uas muaj nyob hauv khw. Lawv ua haujlwm los ntawm kev tsim ib txheej sib xyaw rau ntawm qhov chaw ntawm cov cement, tiv thaiv kev sib sau ua ke ntawm cov cement thiab ua kom cov cement ntws tau zoo dua thiab ua haujlwm tau zoo dua. Cov nyhuv sib xyaw no tsis yog tsuas yog txo cov dej siv xwb tab sis kuj ua rau cov cement ceev thiab lub zog ntau dua. Piv rau cov tshuaj sib xyaw ua kom dej tsis sib xyaw zoo li qub, cov qauv ua haujlwm tau zoo muab cov nqi txo dej ntau dua (feem ntau yog 25% -40%) thiab cov kev xav tau tsawg dua (feem ntau yog 0.1% -0.3% ntawm tag nrho cov khoom siv cement), nrog rau qhov cuam tshuam me dua rau ib puag ncig.
Hauv cov haujlwm tsim kho, kev siv cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem ua rau lub zog compressive thiab dej tsis kam ntawm cov pob zeb ua vaj tse zoo dua, ua rau lub neej ua haujlwm ntev dua. Piv txwv li, hauv kev tsim kho cov tsev siab thiab cov choj loj, cov tshuaj sib xyaw ua kom dej tsawg ua kom cov pob zeb ua tau zoo nyob rau hauv qhov yuav tsum tau muaj zog, ua kom yooj yim rau kev ua haujlwm tsim kho. Tsis tas li ntawd, cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem txo qhov kev ntws thiab kev sib cais hauv cov pob zeb ua vaj tse, txhim kho nws qhov sib xws thiab kev sib xws.
Hauv kev tsim kho ntsuab, cov yam ntxwv ib puag ncig ntawm cov tshuaj sib xyaw ua kom dej tsawg yog qhov tseem ceeb heev. Kev siv cov tshuaj sib xyaw ua kom dej tsawg ua haujlwm tau zoo tuaj yeem txo kev siv cement, yog li txo cov pa roj carbon. Ntxiv mus, cov tshuaj sib xyaw no tuaj yeem txhim kho kev ruaj khov ntawm cov pob zeb, txo cov nqi kho thiab kev siv cov peev txheej rau cov tsev. Ntau cov tshuaj sib xyaw ua kom dej tsawg ua haujlwm tau zoo kuj tau txais daim ntawv pov thawj ib puag ncig thoob ntiaj teb, ua raws li lub hom phiaj kev txhim kho kom ruaj khov ntawm kev tsim kho ntsuab.
Nrog rau kev txhim kho tas mus li ntawm cov thev naus laus zis kev tsim kho, cov ntawv thov ntawm cov tshuaj sib xyaw ua kom dej tsawg kuj nthuav dav. Piv txwv li, hauv cov pob zeb ua haujlwm siab (HPC) thiab cov pob zeb sib xyaw ua ke (SCC), cov tshuaj sib xyaw ua kom dej tsawg yog cov khoom ntxiv tseem ceeb uas ua kom cov khoom sib xyaw ua ke ntawm cov pob zeb nyob rau hauv qhov ceev thiab lub zog siab. Tsis tas li ntawd, cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem siv ua ke nrog lwm cov tshuaj sib xyaw (xws li cov tshuaj tiv thaiv thiab cov neeg sawv cev rau huab cua) kom ua kom cov khoom ntawm cov pob zeb zoo dua.
Hauv cov haujlwm tsim kho, kev siv cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem ua rau lub zog compressive thiab dej tsis kam ntawm cov pob zeb ua vaj tse zoo dua, ua rau lub neej ua haujlwm ntev dua. Piv txwv li, hauv kev tsim kho cov tsev siab thiab cov choj loj, cov tshuaj sib xyaw ua kom dej tsawg ua kom cov pob zeb ua tau zoo nyob rau hauv qhov yuav tsum tau muaj zog, ua kom yooj yim rau kev ua haujlwm tsim kho. Tsis tas li ntawd, cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem txo qhov kev ntws thiab kev sib cais hauv cov pob zeb ua vaj tse, txhim kho nws qhov sib xws thiab kev sib xws.
Hauv kev tsim kho ntsuab, cov yam ntxwv ib puag ncig ntawm cov tshuaj sib xyaw ua kom dej tsawg yog qhov tseem ceeb heev. Kev siv cov tshuaj sib xyaw ua kom dej tsawg ua haujlwm tau zoo tuaj yeem txo kev siv cement, yog li txo cov pa roj carbon. Ntxiv mus, cov tshuaj sib xyaw no tuaj yeem txhim kho kev ruaj khov ntawm cov pob zeb, txo cov nqi kho thiab kev siv cov peev txheej rau cov tsev. Ntau cov tshuaj sib xyaw ua kom dej tsawg ua haujlwm tau zoo kuj tau txais daim ntawv pov thawj ib puag ncig thoob ntiaj teb, ua raws li lub hom phiaj kev txhim kho kom ruaj khov ntawm kev tsim kho ntsuab.
Nrog rau kev txhim kho tas mus li ntawm cov thev naus laus zis kev tsim kho, cov ntawv thov ntawm cov tshuaj sib xyaw ua kom dej tsawg kuj nthuav dav. Piv txwv li, hauv cov pob zeb ua haujlwm siab (HPC) thiab cov pob zeb sib xyaw ua ke (SCC), cov tshuaj sib xyaw ua kom dej tsawg yog cov khoom ntxiv tseem ceeb uas ua kom cov khoom sib xyaw ua ke ntawm cov pob zeb nyob rau hauv qhov ceev thiab lub zog siab. Tsis tas li ntawd, cov tshuaj sib xyaw ua kom dej tsawg tuaj yeem siv ua ke nrog lwm cov tshuaj sib xyaw (xws li cov tshuaj tiv thaiv thiab cov neeg sawv cev rau huab cua) kom ua kom cov khoom ntawm cov pob zeb zoo dua.
Cov Lus Qhia Tshwj Xeeb
| Lub Npe Khoom | Sodium Naphthalene Sulphonate Formaldehyde (SNF/PNS/FDN/NSF) | |||||||||
| Lwm Lub Npe | Poly Naphthalene Sulfonate | |||||||||
| Sulphonated Naphthalene Formaldehyde | ||||||||||
| Naphthalene raws li Superplasticizer | ||||||||||
| Cov ntsiab lus ntawm Sodium Sulfate | 5% 10% 18% | |||||||||
| Qhov tsos | Hmoov Xim av daj | |||||||||
| Ntim khoom | 25KG Hnab | |||||||||
| CAS TSIS MUAJ | 36290-04-7 | |||||||||
| Tus lej HS | 38244010 | |||||||||
| Qhov ntau | 14-15MTS Rau 20'FCL | |||||||||
| Daim Ntawv Thov | Cov tshuaj sib tov ua ke, ua kom cov dej ntws zoo dua | |||||||||
Daim Ntawv Tswj Xyuas Zoo
| COV KHOOM | SNF-A | SNF-B | SNF-C | ||||
| Cov Ntsiab Lus Khoom ≥ | 92% | 92% | 92% | ||||
| Tus nqi PH | 7-9 | 7-9 | 7-9 | ||||
| Cov Chlorides Cov Ntsiab Lus ≤ | 0.30% | 0.40% | 0.50% | ||||
| Cov ntsiab lus ntawm Sodium Sulfate ≤ | 5% | 10% | 18% | ||||
| Cov hmoov txhuv nplej siab (hli) ≥ | 250 | 240 | 230 | ||||
| Max Dej Txo Tus Nqi (%) | 26 | 25 | 23 |
Hauv kev xaus lus
Cov tshuaj ntxiv uas txo cov dej yog cov khoom ntxiv tseem ceeb hauv cov thev naus laus zis niaj hnub no. Lawv tsis yog tsuas yog txhim kho kev ua haujlwm ntawm cov pob zeb xwb tab sis kuj txhawb nqa kev tsim kho ntsuab thiab kev txhim kho kom ruaj khov. Nrog rau kev nce qib ntawm thev naus laus zis tas mus li, cov kev cia siab ntawm daim ntawv thov rau cov tshuaj ntxiv uas txo cov dej yuav dav dua.