Cov kua dej yog siv los kaw cov nqaws dej. Thaum twg ib qho ntsaws ruaj khov pib deform los yog poob nws nruj, lub ntsej muag dej thaiv tau siv, uas yog ua los ntawm ntau cov ntaub ntawv. Yog tias koj xaiv cov dej tsis huv, qhov no tuaj yeem ua rau lub neej tsis muaj kev cia siab.
Cov tshuab no tau siv thawj zaug hauv 50s. Lub sijhawm ntawd, cov nqaws dej tau ntim nrog cov kav hlau txuas ntxiv. Cov nqi rau cov kais dej tawm tuaj yeem nrhiav pom nyob rau ntawm lub vev xaib ntawm lub khw online. Muaj ntau cov khoom lag luam muaj, tsim nyog rau ntau hom haujlwm.
Dab tsi ntawm cov khoom siv dej tso tawm dej tawm muaj?
Cov khoom muaj cov yam ntxwv li nram no:
- siab tiv thaiv ya raws thiab lwm cov kev daws tsis haum;
- yam ntxwv muaj zog;
- khaws cia ntawm elasticity nrog qhov hloov kub tseem ceeb;
- siab tsis kam;
- kev pab lub neej ntev (sib luag rau lub neej kev pab ntawm kev tsim kho khoom).
Thaum xaiv cov khoom siv hauv tsev, nws yog ib qho tseem ceeb kom paub txog cov hom thiab cov duab ntawm cov hoom voos kom thiaj li xaiv qhov yog. Nyob ntawm txoj kev teeb tsa, 4 hom tau txawv:
- Pov thaiv. Lawv raug siv rau kev ua haujlwm sib koom ua ke ntawm concreting. Cov neeg tsim khoom ntxiv cov khoom siv ntxiv uas nthuav thaum pom cov dej, uas ua rau kev sib khi ntxiv.
- Sab hauv. Cov yuam sij no yog siv los kaw cov seams deformed. Ua tiav kev sib khi ntawm cov pob qij txha yog ua tau tsuas yog ua tiav los ntawm kev sau cov voids nrog cov khoom siv insulating. Cov dowels zoo li no feem ntau siv hauv kev tsim kho cov pas dej da dej, pas dej tauv thiab chaw lim dej ntxuav dej.
- Formwork. Hom dowel no tsuas yog siv thaum lub sijhawm kev tsim cov qauv ntawm cov qauv. Nws yog qhov yooj yim los xaiv lawv vim tias lawv muaj qee yam kev sib txuam nrog kev sib txawv formwork systems.
- Kho Tau. Cov yuam sij no tau siv thaum kho cov koom tes txuas ntxiv mus. Cov khoom lag luam no yooj yim tshaj plaws rau kev txhim kho vim tias lawv muaj txoj kev txhim kho nyiaj siv ua haujlwm.
Tseem ceeb. Kev ntsuas dej tsis pom kev sib txawv tsis yog txawv ntawm hom thiab cov qauv, tab sis kuj yog nyob ntawm cov chaw tsim khoom. Cov khoom lag luam los ntawm cov tuam txhab sib txawv tuaj yeem sib txawv, yog li nws yog qhov tseem ceeb kom saib qhov kev sib raug zoo ntawm cov khoom siv hauv tsev.
Cov lus qhia rau xaiv cov hnab dej tsis zoo
Cov ntaub ntawv tsim qauv yuav tsum muaj cov khoom lag luam pom zoo. Thaum tsis muaj cov ntsiab lus no, koj yuav tsum tham tam sim no qhov teeb meem nrog cov neeg siv khoom.
Thaum xaiv cov dowels, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov cov ntsiab lus hauv qab no:
- cov ntaub ntawv xa tawm yuav tsum qhia cov chaw tsim khoom thiab cov khoom siv ntawm chaw tsim khoom;
- thaum lub sijhawm lees txais ntawm cov khoom lag luam, nws yog ib qho tseem ceeb kom tau txais daim ntawv pov thawj ntawm kev ua raws thiab cov ntawv hla tebchaws tau ntawv pov thawj los ntawm cov kws tsim khoom;
- kev txuag nyiaj thaum lub sijhawm tsim kho tuaj yeem ua rau muaj qhov xwm txheej tshwm sim, yog li nws yog qhov tseem ceeb los xaiv cov ntaub ntawv muaj txiaj ntsig zoo uas muaj tag nrho cov ntaub ntawv txhawb nqa;
- muaj kev sau npe tshwj xeeb ntawm cov tswv lag luam uas koj tuaj yeem tshawb xyuas qhov kev ua raws cai ntawm cov ntaub ntawv thiab tus xa khoom uas muab rau lawv;
- koj tuaj yeem ib txwm tau txais kev pab tswv yim ntxiv los ntawm cov kws tshaj lij koom nrog kev tsim kho ua haujlwm ntev;
- coj mus rau hauv qhov ntev, dav, tuab thiab hom khoom thaum xaiv.
Tseem ceeb. Cov neeg tsim khoom lag luam ua cov khoom siv dej sib txawv hauv qhov ntev, dav, teeb tsa. Txoj hau kev no tso cai rau koj xaiv cov dowels uas tsim nyog, suav txog qhov peculiarities ntawm qhov chaw raug txhim kho lossis kho.
Cov ntaub ntawv nrov tshaj plaws rau cov kav dej hauv av yog PVC thiab EPDM. Ua ntej yuav cov khoom siv dej khawm, nws yog ib qho tseem ceeb uas yuav tsum tau soj ntsuam kom sib koom ua ke txhawm rau kom thiaj li nrhiav tau cov tshuaj zoo tshajTxhawm rau kom tsis txhob yuam kev nrog txoj kev xaiv, nws yog ib qho tseem ceeb kom kawm txhua yam ntawm cov yuam sij, thiab them nyiaj tshwj xeeb rau lawv cov lus. Ib qho khoom xaiv uas tsim nyog yuav ua rau muaj zog tag nrho ntawm tus qauv thiab tiv thaiv nws los ntawm ya raws.
