HCEA Concrete Cement Expanding Agent
Nyob rau hauv lub realm ntawm kev tsim kho, nrhiav kom ruaj thiab resilient pob zeb tseem yuav tsav innovation. Concrete expanding agents, tshwj xeeb tshaj yog HCEA, ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo ntawm cov vaj tse pob zeb los ntawm kev daws teeb meem xws li shrinkage thiab cais. Kab lus no qhia txog qhov tshwj xeeb ntawm HCEA, nthuav dav nws cov khoom xyaw, kev siv, cov txiaj ntsig, thiab kev siv kom zoo los xyuas kom meej qhov ua tau zoo hauv ntau yam kev tsim kho.
Hauj lwm lawm
HCEA yog dab tsi?
HCEA yog ib qho tshwj xeeb kev nthuav dav tus neeg sawv cev tsim los ntawm cov clinkers uas muaj cov dej tsis muaj C4A3S ua ke nrog ntuj gypsum. Qhov kev tsim tshwj xeeb no tau ua tiav los ntawm cov txheej txheem kev sib tsoo siab heev, ua rau cov khoom lag luam nrog cov ntsiab lus tsis tshua muaj poov tshuaj thiab sodium, uas txo nws qhov cuam tshuam rau pob zeb ua kom muaj zog thaum muab kev nthuav dav zoo.
Cov khoom tseem ceeb ntawm HCEA
| Khoom | Specification |
|---|
| Qhov tshwm sim | Grey hmoov |
| Moisture | Tsawg dua lossis sib npaug rau 3.0% |
| Cov ntsiab lus Alkali | Tsawg dua los yog sib npaug rau 0.75% |
| Chloride Ion | Tsawg dua lossis sib npaug rau 0.05% |
| Magnesium Oxide | Tsawg dua lossis sib npaug rau 5.0% |
| Kev zoo | Residue ntawm 1.25mm sieve Tsawg dua los yog sib npaug rau 0.5% |
Kev ntsuas kev ua haujlwm
HCEA nthuav tawm cov khoom siv tshuab zoo nkauj, ua tiav:
Compressive zog: Ntau tshaj 40 MPa ntawm 7 hnub thiab 54 MPa ntawm 28 hnub.
Flexural zog: Qhov tseem ceeb nce ntxiv nyob rau lub sijhawm kho.
Kev siv ntawm HCEA
Cov Kev Siv Zoo Tshaj Plaws
HCEA yog qhov tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas cov pob zeb ua tau yooj yim rau shrinkage vim dej kub. Cov ntawv thov ib txwm muaj xws li:
Kev tsim kho hauv av: Zoo tagnrho rau subway systems, tunnels, thiab pej xeem huab cua tiv thaiv installation, qhov twg stability thiab noo noo tswj yog qhov tseem ceeb.
Hydraulic Structures: Siv nyob rau hauv tej yaam num uas muaj kev tuav dej thiab tswj, xws li dams thiab reservoirs.
Seepage Control: Siv tau los tsim cov txheej txheem los tiv thaiv cov dej ntws tawm thiab cov kev daws teeb meem ntub dej.
Kev siv tshuab: Siv rau cov bolts thiab xyuas kom tsis txhob shrinkage grouting nyob rau hauv cov khoom siv ntxiv dag zog.
Nta thiab Cov txiaj ntsig ntawm HCEA
Qhov zoo tshaj li cov neeg sawv cev nthuav dav
Tsawg Alkali Cov ntsiab lus: HCEA txo qis qhov kev pheej hmoo ntawm corrosion los txhawb cov hlau tuav, txhim kho lub neej ntev ntawm cov pob zeb ua vaj tse.
Short-term Expansion: Khaws kev nthuav dav yam tsis muaj kev hloov pauv tseem ceeb tom qab 14 hnub, ua kom muaj kev ntseeg ruaj khov.
Siab Compressive zog: Ua tiav lub zog muaj zog nce sai, ua kom yooj yim rau lub sijhawm ua haujlwm sai.
Txhim kho Impermeability: Muaj kev tiv thaiv zoo rau dej ingress, tseem ceeb heev rau kev siv hauv av thiab hydraulic.
Txhim khu Durability: Muaj zog tiv thaiv kom khov-thaw cycles thiab corrosion, tseem ceeb heev rau cov qauv raug mob hnyav.
Pom zoo noj thiab siv cov lus qhia
Kev sib xyaw ua kom zoo
Txhawm rau ua tiav cov txiaj ntsig xav tau, cov tshuaj pom zoo ntawm HCEA yog6.0% los ntawm qhov hnyav ntawm cov cement. Nws yog ib qho tseem ceeb uas yuav tau ua qhov kev ntsuam xyuas sib raug zoo thaum sib xyaw HCEA nrog ntau hom cement.
Mixing thiab Curing Instructions
Mechanical Agitation: Ua kom lub sijhawm sib xyaw ua ke ntau dua 3 feeb rau kev sib xyaw ua ke.
Kev Kho Mob: Pwm tso tawm yuav tsum tshwm sim tom qab tsawg kawg ntawm 7 hnub, nrog rau kev kho kom ntev li ntawm 14 hnub kom ua tiav qhov kev ua tau zoo. Hauv cov huab cua txias, kev ntsuas cua sov tsim nyog yuav tsum tau ua.
Cov lus ceeb toom rau kev siv tau zoo
Yog Mix Design: Ua kom tiav qhov sib npaug ntawm kev nthuav dav thiab kev txwv yog qhov tseem ceeb.
Kev Txhim Kho Cov Txheej Txheem: Muab cov hlau tuav uas tsim nyog los txhim kho cov peev txheej thauj khoom.
Kev Ua Haujlwm Rigor: Ua raws li cov txheej txheem kev ua haujlwm nruj kom paub meej kom txaus thiab tiv thaiv kev sib kis.
Xaus
Cov pob zeb nthuav dav zoo li HCEA yog qhov tseem ceeb rau kev txhim kho cov kav ntev thiab kev ua haujlwm ntawm cov pob zeb ua vaj tse, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig nyuaj. Los ntawm kev nkag siab txog nws cov khoom, kev siv, thiab kev siv kom raug, cov kws tsim kho tuaj yeem txhim kho qhov zoo thiab ntev ntawm lawv cov haujlwm.
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