2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
A. pob zeb ntsws ntsws raws li nws kho, thiab yuav txuas ntxiv me ntsis ntawm tus nqi qis dua lub sijhawm. Muaj cov grouts tshwj xeeb siv los ntawm millwrights rau kev teeb tsa cov tshuab uas nthuav dav thaum lawv kho, tab sis cov no tsis yog siv hauv kev tsim kho.
MAAs txo qis npaum li cas thaum nws qhuav?
Lub cev, pob zeb uas muaj kev ziab qhuav ntawm txog 0.05 feem pua (500 labths lossis 500 x 10-6) yuav ntsws kwv yees li 0.6 ntiv tes rau 100 ko taw (50 hli rau txhua qhov 100 m).
Puas cement nthuav qhov chaw?
Thaum pub dawb rau deform, pob zeb yuav nthuav lossis cog lus vim qhov hloov pauv ntawm qhov kub thiab txias. Qhov loj ntawm cov pob zeb ua qauv txawm tias nws yog tus choj, txoj kev loj, lossis lub tsev tsis ua rau nws tiv taus qhov kub thiab txias. … Pob zeb nthuav me ntsis thaum kub nce thiab cog lus thaum kub poob.
Puas cement nthuav thaum tawv?
A.: Thaum nws ua ntej dries, pob zeb shrinks thiab undergoes structural alterations uas ua rau ib co ntawm cov shrinkage irreversible. … Txawm li cas los xij, pob zeb tiag tiag nthuav thaum nws kub lossis thaum cov dej noo hloov pauv.
Puas cement nthuav thaum ntub?
Kev nthuav dav deformation yog suav tias yog tshwm sim los ntawm kev nqus dej los ntawm cov cement colloid. … Txij li thaum dej nkag mus rau hauv lub qhov hws hauv cov pob zeb thiab ua kom nws cov dej noo, nws ntim expands.
Pom zoo:
Puas yog nthuav tawm lossis nthuav tawm?
Yog koj hais tias ib tug neeg tab tom nthuav tawm, koj tab tom thuam lawv rau kev sim ua kom neeg nyiam los ntawm kev qhia pom tseeb tias lawv ua tau lossis yam lawv muaj. Yog tias koj nthuav tawm ib yam dab tsi uas koj muaj, koj qhia rau ntau tus neeg lossis ua kom pom tseeb tias koj muaj nws, vim koj txaus siab rau nws.
Thaum twg cov tshuab ziab plaub hau tau tsim?
In 1888, Alexandre-Ferdinand Godefroy, tus kws tshaj lij Fab Kis Fab Kis - tus kws tsim plaub hau plaub hau - patented lub tshuab ziab khaub ncaws thawj poj koob yawm txwv. Lub contraption yuav tsum tau txuas mus rau "rau txhua yam tsim nyog lub rhaub,"
Vim li cas pob zeb tawg thaum ziab?
Shrinkage yog qhov ua rau tawg. Raws li cov pob zeb hardens thiab dries nws shrinks. Qhov no yog vim qhov evaporation ntawm cov dej sib tov ntau dhau. … Qhov shrinkage no ua rau muaj zog hauv cov pob zeb uas txhais tau tias rub lub slab sib nrug.
Qhov twg yog nthuav lossis nthuav tawm?
Expound txhais tau tias "piav qhia meej." Expand txhais tau tias "piav qhia ntau dua." Yog li thaum expound tsis qhia meej meej, nthuav dav yog sib piv. Txhua yam koj tuaj yeem qhia tau tseeb thaum tus neeg A hais tias tus neeg B tau "
Puas tshuab ziab khaub ncaws hnyav dua li kev ziab khaub ncaws?
nrog lub tshuab ziab khaub ncaws + hlau tiaj tus. Tshuab ziab yog qhov ua rau koj cov plaub hau tsis zoovim tias tsis yog khaws cov cua sov hauv ib qho chaw, cua sov los ntawm lub tshuab ziab khaub ncaws tas li txav mus. … Flatirons thiab lwm yam cuab yeej kub muaj qhov kub siab tshaj qhov feem ntau cov tshuab ziab khaub ncaws ua - tus chij liab loj rau kev puas tsuaj thaum tshav kub kub.
