Kev Tsim Kho Yav Tom Ntej: Tshawb Nrhiav Cov Khoom Siv Tshiab Hauv Kev Tsim Kho Pob Zeb

Kev tsim cov qauv pob zeb uas ruaj khov thiab ua tau zoo yog nyob ntawm kev xaiv cov tshuaj ntxiv, uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov yam ntxwv ntawm cov pob zeb. Cov tshuaj ntxiv no, xws li cov tshauv ya, cenospheres, expanded perlite, hollow glass microspheres, concrete fibers, thiab cov neeg sawv cev txo dej, tab tom hloov pauv kev lag luam kev tsim kho los ntawm kev txhim kho cov khoom sib xyaw thiab cov khoom sib xyaw ua ke. Tsab xov xwm no lub hom phiaj yog tshawb nrhiav cov yam ntxwv thiab kev ua haujlwm ntawm cov tshuaj ntxiv tshiab no, qhia txog lawv qhov cuam tshuam tseem ceeb rau kev ua tau zoo ntawm cov pob zeb.

Cov tshauv ya, ib yam khoom seem ntawm kev hlawv thee, yog siv dav hauv kev tsim cov pob zeb ua vaj tse vim nws cov khoom pozzolanic. Nws ua rau cov pob zeb ua vaj tse muaj zog, ruaj khov, thiab ua haujlwm tau zoo thaum txo qhov kub ntawm kev ua kom noo. Los ntawm kev hloov ib feem ntawm cov cement, cov tshauv ya txhawb kev tsim kho kom ruaj khov los ntawm kev txo cov pa roj carbon. Nws qhov me me thiab cov duab kheej kheej ua rau cov pob zeb ntim ntau ntxiv, ua rau cov dej nkag tau tsawg dua thiab tiv taus cov xwm txheej ib puag ncig thiab cov tshuaj lom neeg.

Cov Cenospheres, cov khoom siv ceramic microspheres uas sib dua uas tau los ntawm cov tshauv ya, tau raug lees paub ntau ntxiv tias yog cov khoom siv ntxiv rau hauv kev tsim cov pob zeb. Lawv qhov ceev qis thiab cov duab kheej kheej pab txo cov ceev ntawm cov pob zeb, ua rau nws tsim nyog rau cov ntawv thov uas xav tau cov qauv sib dua. Ntxiv mus, cov cenosphere txhim kho cov khoom siv rwb thaiv tsev thermal ntawm cov pob zeb, ua rau nws zoo tagnrho rau cov haujlwm tsim kho uas siv hluav taws xob tsawg.

Perlite nthuav dav, ib lub iav tawg uas tshwm sim los ntawm roob hluav taws ntuj tsim, muaj feem cuam tshuam rau cov yam ntxwv ntawm cov pob zeb ua vaj tse. Nws cov yam ntxwv sib dua thiab rwb thaiv tsev txo cov pob zeb ua vaj tse thaum txhim kho kev tiv thaiv hluav taws thiab kev ua haujlwm thermal. Kev suav nrog perlite nthuav dav rau hauv cov sib tov ua los ntawm cov pob zeb ua rau muaj cov qauv uas ruaj khov thiab txuag hluav taws xob, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev tsim kho kom ruaj khov.

Cov iav microspheres hollow, cov khoom me me uas tsim los nrog lub zog siab compressive, tab tom hloov kho cov thev naus laus zis ua vaj tse. Cov microspheres no txhim kho kev ua haujlwm ntawm kev sib tov ua vaj tse, txo qhov ceev, thiab txhim kho kev rwb thaiv tsev thermal. Lawv cov duab kheej kheej thiab kev ua haujlwm thermal qis ua rau lawv zoo tagnrho rau kev tsim cov vaj tse me me uas ua haujlwm tau zoo nrog kev ua kom ruaj khov thiab kev siv hluav taws xob zoo.

Cov fibers ua los ntawm cov pob zeb, suav nrog hlau, khoom siv hluavtaws, thiab cov khoom siv ntuj tsim, ua haujlwm ua cov khoom siv ntxiv uas ua rau lub zog tensile thiab toughness ntawm cov pob zeb. Cov fibers hlau ua rau lub pob zeb tsis kam tawg thiab ductility, ua rau nws tsim nyog rau kev siv hauv kev lag luam thiab kev tsim kho vaj tse. Cov xov paj ua los ntawm cov khoom siv hluavtaws, xws li polypropylene thiab nylon, ua kom cov pob zeb tsis yooj yim rau kev cuam tshuam thiab ua kom ruaj khov, tshwj xeeb tshaj yog nyob rau hauv thaj chaw muaj neeg coob coob. Cov fiber ntuj xws li jute thiab txiv maj phaub muab cov kev xaiv txhawb nqa kom ruaj khov thaum txo cov pa roj carbon hauv kev tsim cov pob zeb.

Cov tshuaj txo dej, tseem hu ua superplasticizers, yog cov khoom ntxiv tseem ceeb uas ua rau kev sib tov ua ke ua haujlwm tau zoo thiab ntws yam tsis muaj kev cuam tshuam rau lub zog. Los ntawm kev faib cov cement me me kom zoo dua, cov neeg sawv cev txo dej ua rau muaj peev xwm tsim cov pob zeb muaj zog nrog cov dej tsawg dua. Qhov no ua rau muaj kev ruaj khov zoo dua, txo qhov permeability, thiab txhim kho qhov ua tiav ntawm qhov chaw, ua rau nws yog ib qho tseem ceeb hauv cov thev naus laus zis niaj hnub no.

Hauv kev xaus lus, kev siv cov khoom siv ntxiv rau hauv cov pob zeb ua vaj tse tshiab, suav nrog cov tshauv ya, cenospheres, expanded perlite, hollow glass microspheres, concrete fibers, thiab cov neeg sawv cev txo dej, tab tom hloov pauv kev coj ua hauv kev tsim kho vaj tse. Cov khoom ntxiv no tsis yog tsuas yog txhim kho cov khoom sib xyaw ua ke xwb tab sis kuj pab txhawb rau kev tsim kho kom ruaj khov thiab siv hluav taws xob tau zoo. Thaum kev lag luam tsim kho nce qib, kev koom ua ke ntawm cov khoom ntxiv tshiab no yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev tsim cov thev naus laus zis hauv cov pob zeb yav tom ntej, pab txhawb kev tsim cov qauv ruaj khov dua, muaj zog dua, thiab zoo rau ib puag ncig.