Raws li cov khoom siv kho kom zoo nkauj tsis tseem ceeb hauv kev kho kom zoo nkauj, putty hmoov yog cov khoom siv rau phab ntsa theem thiab kho, thiab nws yog lub hauv paus zoo rau lwm cov khoom dai. Cov phab ntsa saum npoo tuaj yeem ua kom du thiab zoo ib yam los ntawm kev siv cov hmoov putty, kom cov haujlwm kho kom zoo nkauj yav tom ntej tuaj yeem ua tau zoo dua. Putty hmoov feem ntau yog tsim los ntawm cov khoom siv hauv paus, muab tub lim, dej thiab tshuaj ntxiv. Dab tsi yog lub luag haujlwm tseem ceeb ntawm redispersible latex hmoov raws li lub ntsiab additive hauv putty hmoov:
① Cov nyhuv ntawm cov tshuaj khib nyiab tshiab;
A. Txhim kho kev tsim kho;
B. Ntxiv dej tuav los txhim kho hydration;
C. Ua kom muaj peev xwm ua haujlwm;
D. Tsis txhob tawg thaum ntxov.
② Cov nyhuv ntawm cov tshuaj khib nyiab:
A. Txo cov elastic modulus ntawm mortar thiab nce qhov sib txuam ntawm lub hauv paus txheej;
B. Ua kom yooj thiab tiv thaiv kev tawg;
C. Txhim kho hmoov los tiv thaiv;
D. Hydrophobic lossis txo qhov nqus dej;
E. Ua kom cov adhesion rau lub hauv paus txheej.
Waterproof mortar yog hais txog cov cement mortar uas muaj cov dej tsis zoo thiab cov khoom tsis zoo tom qab ua kom tawv tawv los ntawm kev kho cov mortar piv thiab siv cov txheej txheem tsim kho tshwj xeeb. Waterproof mortar muaj huab cua tsis zoo, ua haujlwm ntev, impermeability, compactness, siab adhesion thiab muaj zog waterproof thiab anti-corrosion nyhuv. Dab tsi yog lub luag haujlwm tseem ceeb ntawmredispersible latex hmoovRaws li lub ntsiab additive nyob rau hauv waterproof mortar:
① Cov nyhuv ntawm cov tshuaj khib nyiab tshiab:
A. Txhim kho kev tsim kho
B. Ua kom dej tuav thiab txhim kho cov cement hydration;
② Cov nyhuv ntawm cov tshuaj khib nyiab:
A. Txo cov elastic modulus ntawm mortar thiab txhim khu kev sib txuam ntawm lub hauv paus txheej;
B. Ua kom yooj, tiv thaiv kev tawg lossis muaj peev xwm txuas;
C. Txhim kho qhov ntom ntawm mortar;
D. Hydrophobic;
E. Ua kom muaj kev sib raug zoo.
Lub sij hawm xa tuaj: Plaub Hlis-28-2024