PCE-raws li Admixture rau pob zeb yog dab tsi?
Jul 12, 2024
PCE (polycarboxylate-raws li admixture) yog lub cim tshiab ntawm cov khoom siv ua haujlwm siab siv los txhim kho cov khoom ntawm pob zeb. Nws yog ib hom kev sib xyaw ua ke hu ua high-range dej-txo admixtures lossis superplasticizers. Ua los ntawm ib qho aqueous copolymer ntawm carboxylic acids, cov khoom siv no ua rau muaj kev ua haujlwm siab ntawm cov tshuaj tsawg thiab tuaj yeem tsim tau yooj yim nrog kev suav nrog defoamer. Nws muaj kev tswj xyuas zoo tshaj plaws ntawm cov khoom rheological ntawm pob zeb thiab txhim kho nws lub zog. Thaum ntxiv rau cov pob zeb, nws txo cov ntshav thiab cov khoom sib cais, tso cai rau kom txo qis cov ntsiab lus ntawm dej tsawg kawg yog 30%. Tsis tas li ntawd, nws yuav pab tau rau retarding lub sij hawm teem ntawm pob zeb.
Muaj nuj nqi:PCE-raws li admixtures ua hauj lwm raws li ib tug dej-txo tus neeg sawv cev uas integrates:
Kev txo dej
Shrinkage txo
Kev txhawb zog
Kev tiv thaiv slump
Kev tiv thaiv ib puag ncig
Daim ntawv thov:PCE-raws li admixtures yog siv los txo cov dej-cement piv, tshem tawm cov cracking thiab shrinking, ua kom durability, txhim khu kev ua hauj lwm, thiab ua kom tag nrho lub zog ntawm pob zeb. Lawv feem ntau siv hauv kev tsim kho kev lag luam los txhim kho cov khoom ntawm pob zeb.
Cov khoom ntawm PCE-based Admixture:
Kev txo dej siab:PCE-raws li admixture tuaj yeem pab txo cov dej los ntawm kev tso cai rau cov pob zeb ua kom nws ua haujlwm tau zoo thaum txo cov dej. Qhov no yog ua los ntawm kev tsim cov denser sib tov nrog me ntsis siab dua formulation ntawm cement thiab lwm yam additives. Nws yog feem ntau siv rau hauv cov ntawv npaj sib xyaw ua ke uas yuav tsum muaj kev ua haujlwm siab thiab ua haujlwm ntev.
Siab Resistance:Lub admixture's resistant zog ua kom cov pob zeb ua rau muaj zog sulphate nres, khov-thaw puas, thiab alkali-silica cov tshuaj tiv thaiv.
Slump Retention:Raws li cov dej txo qis, PCE-raws li cov khoom sib xyaw tuaj yeem pab txo cov ntsiab lus ntawm cov dej uas yuav tsum tau ua kom tiav qhov kev poob qis los ntawm kev txhim kho kev ua haujlwm ntawm cov pob zeb sib tov. Qhov no feem ntau ua tiav los ntawm kev txo cov dej-cement piv thiab ua kom cov particle loj faib. Qhov no pab tiv thaiv cov dej los ntshav ntau dhau thaum lub sijhawm sib tov, ua rau poob ntawm qhov poob.
Qhov zoo ntawm PCE-Based Admixture:
Txhim kho kev ua haujlwm:PCE-raws li admixture muab kev sib xyaw ua ke zoo dua nrog kev txhim kho lub zog thiab ua haujlwm nrawm dua yam tsis muaj kev cuam tshuam qhov chaw teeb tsa. Nws tseem tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb tshiab, ua kom yooj yim rau cov twj tso kua mis thiab ncuav.
Txo permeability:Admixtures tuaj yeem txo cov permeability ntawm pob zeb, txo qhov kev pheej hmoo ntawm cov dej noo nkag mus rau hauv cov pob zeb.
High-Quality Concrete Mixes:PCE-raws li admixture tau txais cov pob zeb zoo sib xyaw nrog kev txhim kho cov cement hydration thiab cov yam ntxwv nchuav. Qhov no ua rau kev txhim kho lub zog thiab cov pob zeb zoo.
Txo Shrinkage:Concrete admixtures tuaj yeem txo qhov shrinkage ntawm pob zeb, pab txo kev pheej hmoo ntawm kev tawg thiab lwm yam kev puas tsuaj. Cov admixtures no muab ib qho kev kho sab hauv rau cov pob zeb sib xyaw. Lub xub ntiag ntawm polycarboxylate ethers ua rau cov khoom sib xyaw kom nqus thiab khaws cov dej hauv cov pob zeb sib xyaw.
Txhim kho tiav:PCE-raws li admixtures tuaj yeem kho qhov ua tiav ntawm pob zeb los ntawm kev ua kom nws smoother thiab txaus siab dua, ua rau muaj qhov sib xws ntau dua. Kev txhim kho tiav pab txhim khu lub durability ntawm cov pob zeb nto. Qhov kev sib xyaw no tuaj yeem muab cov qauv sib xyaw ua ke ntau dua thiab txo qhov nyiam rau qhov tawg tawg. Tsis tas li ntawd, nws tuaj yeem pab txo qhov nqus dej thiab nres cov dej seepage.
Txog Borida:Borida yog lub tuam txhab mob siab rau tshwj xeeb hauv kev sib xyaw ua ke. Nrog rau kev tsom mus rau kev tsim kho tshiab thiab kev ua tau zoo, Borida muaj ntau yam kev daws teeb meem los txhim kho kev ua tau zoo thiab ua haujlwm ntev ntawm pob zeb hauv ntau daim ntawv thov kev tsim kho. Peb cov kws tshaj lij hauv PCE-raws li cov khoom sib xyaw ua kom ntseeg tau tias peb muab cov khoom lag luam ua tau zoo uas ua tau raws li qhov xav tau ntawm kev tsim kho niaj hnub no.