txoj moo

Hnub Tim:31,Lub qe,2022

 

xov xwm2
Xov Xwm1

Qhob admixturestau siv hauv kev ua vaj tse rau ze li ib puas xyoo ua cov khoom lag luam. Tab sis kev yos rov qab rau lub sijhawm thaum ub, tib neeg tau paub tias kev siv qee cov khoom sib ntxiv hauv cov khoom siv. Cov ntaub ntawv txheeb ze cov ntaub ntawv uas muaj 1885 cov neeg European twb paub tias kev tswj hwm ua kom tawv muaj, xws li txiv qaub thiab gypsum, tau ntxiv rau pob zeb. Thaum kawg ntawm lub xyoo pua puv 19, siv cov calcium chloride yog txhua qhov npau taws thiab tseem siv hnub no. Txog 1895, cov dej khov kho ntxiv rau cov pob zeb ua rau txoj kev pua chaw, uas tau txhim kho qhov ua tau zoo ntawm kev ua pob zeb.

Cov khoom lag luam tsim tau tau pom thawj zaug hauv xyoo 1910. Thaum American America tau tsim hauv Tebchaws Meskas tau ua kom khov zoo vim tias huab cua txias heev. Txhawm rau txhim kho qhov zoo ntawm cov pob zeb ua vaj tse, "Vinsa Resin" tau siv los txhim kho lub durability ntawm cov pob zeb. kev sib deev. Kev tshawb fawb tiag tiag yog "Pozzolitn" dej ntws los ntawm Mastersult of Mayosulfonate hauv pulp pov tseg ua kua. Xyoo 1937, Tebchaws Asmeskas tau muab thawj daim ntawv patent rau dej txo tus neeg sawv cev hauv keeb kwm. Xyoo 1954, thawj pawg ntawm kev sim cov qauv rauQhob admixturestau tsim.

 

Kev siv nom ntawmQhob admixturesHauv kuv lub teb chaws nyob rau xyoo 1950s. Lub sijhawm ntawd, Rosin Saponified Air-Entraining tus neeg saib xyuas tau tsim los ntawm cov kws tshaj lij los ntawm lub sijhawm yav dhau los hauv Soviet tau qhia. Nws tau thov nyob rau hauv Tianjin Tanggu chaw nres nkoj tshiab, Wuhan Yangtze Dej choj thiab Foziling Reservoir, thiab ua tiav qee yam tshwm sim. Tom qab ntawd, qhob tshuab siv cov pulp pov tseg los ntawm sulfite papermaking thiab khib zib zib ntab los ntawm cov ntaub ntawv nyob hauv qab yog siv. Kev siv ntawm scontures kuj tau pib los ntawm qhov ntawd.

Txoj kev txhim kho thiab kev siv ntawmQhob admixturestau muaj lub sijhawm ntev. Siv zog tsim thiab txhawb nqa daim ntawv thov ntawmQhob admixturesyog ib txoj hauv kev tseem ceeb los txhawb txoj kev kawm tshawb fawb ntawm kev tsim kho kev tsim kho.

Hauv cov txheej txheem tsim qauv ntawm cov dej num kev tsim kho, siv cov khoom siv kho mob tuaj yeem txhim kho cov khoom siv neeg kho mob, txo cov haujlwm ntawm cov neeg tsim kho cov kev tsim kho, thiab paub tseeb tias qhov zoo ntawm txoj haujlwm. Ntxiv rau, nws kuj tseem siv tau rau qee qhov xwm txheej hnyav. Ua tiav cov haujlwm ua tiav hauv ib puag ncig.

txoj moo

Cov pob zeb ua kom zoo nkauj tau luv luv lub sijhawm txij nkawm tom qab kev tsim kho qhov project, ua kom cov khoom siv ceev nrawm rau ntawm kev txhawb nqa txuas ntxiv nro thiab txiav, ua Tag nrho cov kev tsim kho lub sijhawm. zoo heev shortened. Nyob rau tib lub sijhawm, ntxiv rau ntawmQhob admixturesMuaj peev xwm ua tau zoo tshaj plaws ntawm cov khoom siv ua tau zoo tag nrho, thiab txhim kho nws lub zog, durability, khov ua hauj lwm, thiab impermability.

 

Tsis tas li ntawd, nws tuaj yeem txhim kho cov pob zeb tawg ntawm cov qhob thaum nws tau qhuav txaus thiab ntws tawm ua ntej solidification. Yog tias cov pob zeb ua kom raug rau hauv txoj haujlwm tsim kho, cov admixture feem ntau yuav tsis muaj kev cuam tshuam zoo ntawm kev siv cov khoom siv ntawm cov khoom siv ntawm kev tshawb fawb ntawm kev tshawb fawb, thiab Qhov txo ntawm kev siv cov khoom siv Maas-raws li cov khoom siv tsim kho tsis yog cov nqi tsim kho ntawm cov txheej txheem, thiab muaj kev cuam tshuam zoo rau cov kauj ruam tom ntej. Qhov tamping thiab troweling txheej txheem muab kev yooj yim.


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