Superplasticizer Rau pob zeb|Tseeb Superplasticizer Hmoov Nqe
Sep 14, 2024
Concrete superplasticizers, feem ntau hu ua high-range water reducers, yog ib qho tseem ceeb rau niaj hnub ua vaj tse technology. Cov tshuaj sib xyaw ua ke no txhim kho cov kua dej ntawm cov pob zeb thaum txo cov dej-rau-cement piv, ua rau muaj kev ua haujlwm zoo, ruaj khov, thiab sib tov zoo. Nrog rau kev siv hauv kev lag luam, pej xeem, thiab kev tsim kho vaj tse, superplasticizers ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj zog, muaj zog, thiab ua haujlwm ntev hauv cov vaj tse pob zeb.
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Cov yam ntxwv tseem ceeb ntawm pob zeb Superplasticizers
Tus nqi txo dej siab: Superplasticizers tuaj yeem txo cov ntsiab lus ntawm dej mus txog 30%, ua rau muaj zog ntxiv thiab ua haujlwm ntev.
Txhim kho kev ua haujlwm: Txawm tias cov dej-cement ratios qis, pob zeb tseem ua haujlwm tau zoo, ua rau kev tso kawm thiab ua tiav ntau dua.
Ua kom muaj zog: Qhob nrog superplasticizers nthuav tawm ntau dua compressive zog thaum ntxov thiab tom qab theem.
Kev txhim kho Durability: Zoo dua tiv thaiv tawg, shrinkage, thiab ib puag ncig kev ntxhov siab xws li khov-thaw cycles thiab carbonation.
Hom Pob Zeb Superplasticizers
1. Naphthalene-based Superplasticizers (SNF / PNS / FDN)
Naphthalene-raws li superplasticizers yog cov chav kawm dav siv ntawm cov dej ntau hauv cov dej txo qis, muab kev pom zoo ntawm kev ua tau zoo thiab kev pheej yig. Lawv muaj peev xwm ua kom cov pob zeb fluidity thaum txo cov ntsiab lus dej ua rau lawv zoo tagnrho rau ntau yam kev tsim kho.
Cov khoom tseem ceeb:
Dej txo tus nqi: 15-25%
Tsis muaj Cua-Entraining teebmeem: Ua kom tuab thiab impermeable pob zeb.
Qhov cuam tshuam tsawg kawg rau lub sijhawm teem sijhawm: Haum rau cov haujlwm loj thiab ceev ceev.
Siab Cement Compatibility: Adaptable rau ntau hom cement.
2. Polycarboxylate Superplasticizers (PCE)
Polycarboxylate-based superplasticizers sawv cev rau kev nce qib tshiab hauv cov khoom sib xyaw ua ke. Paub txog lawv cov kev ua tau zoo tshaj plaws ntawm kev txo cov dej thiab kev tuav pov hwm kev ua haujlwm, PCEs tau txais kev pom zoo hauv kev ua haujlwm siab thiab kev tsim kho kom ruaj khov.
Qhov zoo ntawm PCEs:
Dej txo tus nqi: Tshaj 25%, tso cai rau cov pob zeb ua kom muaj zog heev.
Ua haujlwm ntev: Slump tuav yog zoo dua li cov tsoos superplasticizers.
Eco-Friendly: Kev siv cov cement txo qis qis carbon emissions hauv kev tsim kho.
Kev sib haum xeeb: Yooj yim integrates nrog lwm yam admixtures rau tailored pob zeb tov.
3. Melamine-raws li Superplasticizers
Thaum tsis tshua muaj, melamine-based superplasticizers muab cov dej txo qis thiab tshwj xeeb tshaj yog siv rau hauv kev tsim cov pob zeb ua ntej.
Cov txiaj ntsig tseem ceeb:
Siab Thaum Ntxov: Zoo tagnrho rau precast thiab ceev-khiav kev tsim kho.
Durability zoo heev: Txhim khu kev tiv thaiv rau chloride nkag mus thiab sulfate tawm tsam.
Kev siv ntawm Superplasticizers hauv Concrete Engineering
Cov pob zeb superplasticizers yog qhov tseem ceeb hauv ntau qhov kev tsim kho, los ntawm kev tsim kho vaj tse mus rau cov haujlwm tshwj xeeb. Nov yog yuav ua li cas lawv txhim kho kev ua tau zoo ntawm ntau yam kev siv:
1. Industrial thiab Civil Kev Tsim Kho
Hauv kev tsim kho kev lag luam thiab pej xeem, superplasticizers txhim kho qhov fluidity thiab lub zog ntawm prefabricated thiab cam khwb cia-hauv-qhov chaw reinforced pob zeb. Txawm hais tias rau cov tsev siab siab, txuas hniav, lossis kev tsim kho vaj tse, cov khoom siv no ua kom cov pob zeb zoo tshaj plaws thiab yooj yim ntawm kev tsim kho.
Cov txiaj ntsig:
Ua kom muaj zog: Superplasticizers ho txhawb ob qho tib si thaum ntxov thiab lub sij hawm ntev compressive zog, ua kom yooj yim rau kev tsim kho.
Txhim khu Durability: Lawv txhim kho kev tiv thaiv ib puag ncig kev ntxhov siab xws li carbonation, khov-thaw mus, thiab tshuaj lom neeg tawm tsam.
2. Water Conservancy thiab Transport Infrastructure
Superplasticizers yog qhov tseem ceeb hauv kev tsim kho cov dej txuag dej, xws li dams, canals, thiab pipelines, nrog rau kev thauj mus los xws li txoj kev, qhov, thiab tshav dav hlau.
Nta:
Tsawg Permeability: Txo cov dej-cement ratios ua rau cov pob zeb tsis zoo heev, uas yog qhov tseem ceeb rau cov qauv dej.
Siab Flowability: Qhov nce fluidity pab xyuas kom meej tias cov ntaub ntawv loj, cov ntaub ntawv tau sau tsis muaj voids lossis cais.
3. Municipal Projects thiab Ports
Kev tsim kho hauv nroog, suav nrog cov kav dej phwj tuaj, cov chaw kho dej, thiab cov chaw nres nkoj, kuj tau txais txiaj ntsig los ntawm kev siv superplasticizers. Cov khoom ua haujlwm siab ua kom muaj kev sib koom ua ke, txo qhov kev xav tau ntawm cov txheej txheem kev ua haujlwm hnyav.
Cov txiaj ntsig rau cov phiaj xwm hauv nroog:
Txhim kho Crack Resistance: Kev txo qis ua rau muaj kev tawg tsawg, ua kom lub neej ntev ntawm cov txheej txheem tseem ceeb.
Frost Resistance: Lub durability ntawm pob zeb nyob rau hauv khov-thaw tej yam kev mob yog kho kom zoo.
Kev Tshawb Fawb Tom Qab Superplasticizer Performance
Dej-Cement Ratio thiab Nws Qhov Tseem Ceeb
Qhov sib piv ntawm cov dej-cement yog qhov tseem ceeb hauv kev txiav txim siab cov pob zeb ua lub zog, durability, thiab kev ua haujlwm. Txo cov ntsiab lus dej thaum tswj kev ua haujlwm yog qhov tseem ceeb rau kev tsim cov pob zeb ua haujlwm siab. Superplasticizers ua tiav qhov no los ntawm dispersing cov cement hais, tso cai rau lawv ua haujlwm zoo dua nrog dej.