Raws li qhov tsis tseem ceeb hauv kev kho kom zoo nkauj, cov hmoov ua kom zoo nkauj yog lub hauv paus qib rau phab ntsa leveling thiab kho, thiab nws yog lub hauv paus zoo rau lwm cov kev kho kom zoo nkauj. Lub phab ntsa saum npoo av tuaj yeem khaws cia du thiab tsis sib xws los ntawm kev thov ntawm cov hmoov putty, yog li yav tom ntej kho kom zoo dua cov phiaj xwm tau zoo dua. Putty hmoov feem ntau yog muaj ntawm cov khoom siv hauv paus, muab tub lim, dej thiab ntxiv. Dab tsi yog cov haujlwm tseem ceeb ntawm refispersible looj hmoov raws li lub ntsiab additive hauv Putty Hmoov:
① nyhuv ntawm cov tshiab cug sib xyaw;
A. Txhim kho kev tsim muaj peev xwm;
B. Kev khaws dej ntxiv los txhim kho kev co;
C. Ua haujlwm nce ntxiv;
D. Zam kev tawg thaum ntxov.
② cuam tshuam rau tawv tawv:
A. Txo cov maculus loj heev ntawm cug thiab nce qhov txuam ntawm lub hauv paus txheej;
B. Ua kom yooj yim zuj zus thiab tiv taus kev tawg;
C. txhim kho cov hmoov rau kev ua haujlwm tsis kam;
D. Hydrophobic lossis txo cov dej nqus dej;
E. Nce cov nplaum rau lub hauv paus txheej.
Kev siv hluav taws xob dej fab refers refers waterproof rau cov xis nyob uas muaj cov khoom siv dej tsis zoo thiab ua kom haum rau kev kho cov txheej txheem kev tsim kho. Kev siv hluav taws xob waterproof muaj huab cua zoo, lub siab ntev, kev ua haujlwm tsis zoo, kev sib xyaw ua ke, muaj zog dej thiab cov nyhuv tiv thaiv corroose. Dab tsi yog cov haujlwm tseem ceeb ntawmredispersible looj hmoovRaws li lub ntsiab additive nyob rau hauv waterproof cug:
① cuam tshuam rau freshly cug:
A. Txhim kho kev tsim kho
B. Ua kom dej khaws cia thiab txhim kho txoj kev hloov ntawm cov txiv neej;
② cuam tshuam rau tawv tawv:
A. Txo cov modulast loj ntawm cug thiab txhim kho qhov txuam ntawm lub hauv paus txheej;
B. Ua kom muaj kev yooj yim zuj zus, tiv thaiv kev tawg lossis muaj lub peev xwm bridging;
C. txhim kho qhov ceev ntawm cug cug;
D. Hydrophobic;
E. nce coesionion.
Lub Sijhawm Post: Apr-28-2024