Lub luag haujlwm ntawm cov hmoov latex hauv cov hmoov putty thiab cov tshuaj mortar tsis muaj dej

Ua ib yam khoom siv kho kom zoo nkauj uas tsis tseem ceeb hauv kev kho kom zoo nkauj, hmoov putty yog cov khoom siv tseem ceeb rau kev kho thiab kho phab ntsa, thiab nws yog lub hauv paus zoo rau lwm yam kho kom zoo nkauj. Lub ntsej muag phab ntsa tuaj yeem ua kom du thiab sib xws los ntawm kev siv hmoov putty, yog li cov haujlwm kho kom zoo nkauj yav tom ntej tuaj yeem ua tiav zoo dua. Hmoov putty feem ntau yog ua los ntawm cov khoom siv hauv paus, cov khoom sau, dej thiab cov khoom ntxiv. Dab tsi yog cov haujlwm tseem ceeb ntawm cov hmoov latex redispersible ua cov khoom ntxiv tseem ceeb hauv hmoov putty:

① Cov nyhuv rau cov tshuaj khib sib xyaw tshiab;

A. Txhim kho kev tsim kho;
B. Ntxiv dej kom khaws tau kom noo zoo dua;
C. Ua kom yooj yim ua haujlwm;
D. Tsis txhob tawg ua tej daim me me thaum ntxov.

② Cov nyhuv rau cov mortar tawv:

A. Txo qhov elastic modulus ntawm mortar thiab ua kom qhov sib phim ntawm cov txheej hauv paus;
B. Ua kom yooj ywm dua thiab tiv taus kev tawg;
C. Txhim kho cov hmoov tsis kam;
D. Hydrophobic lossis txo qhov nqus dej;
E. Ua kom qhov lo rau txheej puag nce ntxiv.

Cov tshuaj mortar uas tsis ntub dej yog hais txog cov tshuaj cement uas muaj cov yam ntxwv zoo uas tsis ntub dej thiab tsis nkag tau tom qab kho qhov sib piv ntawm cov tshuaj mortar thiab siv cov txheej txheem tsim kho tshwj xeeb. Cov tshuaj mortar uas tsis ntub dej muaj cov yam ntxwv zoo tiv taus huab cua, ruaj khov, tsis nkag tau, me me, nplaum tau zoo thiab muaj zog tiv thaiv dej thiab tiv thaiv xeb. Cov haujlwm tseem ceeb ntawm cov tshuaj mortar no yog dab tsi?hmoov latex uas yaj tau dua tshiabua cov khoom siv tseem ceeb hauv cov tshuaj mortar tsis ntub dej:

① Cov nyhuv rau cov tshuaj khib sib xyaw tshiab:

A. Txhim kho kev tsim kho
B. Ua kom cov dej khaws cia tau zoo dua thiab txhim kho cov dej noo ntawm cov cement;

② Cov nyhuv rau cov mortar tawv:

A. Txo cov elastic modulus ntawm mortar thiab txhim kho qhov sib phim ntawm cov txheej hauv paus;
B. Ua kom muaj kev ywj pheej ntau dua, tiv taus kev tawg lossis muaj peev xwm txuas ntxiv mus;
C. Txhim kho qhov ceev ntawm cov mortar;
D. Tsis muaj dej;
E. Ua kom muaj kev sib koom siab ntxiv.