1. Cov haujlwm ntawm cov hmoov latex uas yaj tau dua hauv cov mortar yog dab tsi?
Lus Teb: Cov hmoov latex uas rov tawg tau yog pwm tom qab tawg thiab ua haujlwm ua cov nplaum thib ob los txhim kho kev sib txuas; cov colloid tiv thaiv raug nqus los ntawm lub cev mortar (nws yuav tsis raug hais tias raug rhuav tshem tom qab molded. Los yog tawg ob zaug); molded polymerization Cov resin lub cev tau faib thoob plaws hauv lub cev mortar ua cov khoom siv txhawb nqa, yog li ua rau muaj kev sib koom ua ke ntawm cov mortar.
2. Cov hmoov latex uas yaj tau dua hauv cov av ntub muaj cov haujlwm dab tsi?
Lus Teb: Txhim kho kev ua haujlwm ntawm kev tsim kho; txhim kho kev ntws dej; ua rau thixotropy thiab sag tsis kam; txhim kho kev sib koom ua ke; ntev lub sijhawm qhib; txhim kho kev khaws dej;
3. Cov hmoov latex uas yaj tau dua tom qab cov mortar kho lawm muaj cov haujlwm dab tsi?
Lus teb: ua kom lub zog tensile nce ntxiv; txhim kho lub zog khoov; txo cov modulus elastic; ua kom deformability nce ntxiv; ua kom cov khoom siv ntom ntom; ua kom hnav tsis kam; ua kom lub zog sib koom ua ke nce ntxiv; Muaj hydrophobicity zoo heev (ntxiv cov hmoov roj hmab hydrophobic).
4. Cov hmoov latex uas yaj tau dua hauv cov khoom siv hmoov qhuav sib txawv muaj cov haujlwm dab tsi?
01. Cov nplaum pobzeb
① Cov nyhuv rau cov av nplaum tshiab
A. Ntev lub sijhawm ua haujlwm thiab lub sijhawm hloov kho tau;
B. Txhim kho qhov kev ua haujlwm khaws dej kom ntseeg tau tias cov dej ntws ntawm cov cement;
C. Txhim kho kev tiv thaiv sag (hmoov roj hmab hloov kho tshwj xeeb)
D. Txhim kho kev ua haujlwm tau zoo (yooj yim rau kev tsim kho ntawm lub substrate, yooj yim rau nias lub pobzeb rau hauv cov nplaum).
② Cov nyhuv rau cov mortar khov kho
A. Nws muaj kev nplaum zoo rau ntau yam khoom siv, suav nrog cov pob zeb ua vaj tse, plaster, ntoo, cov vuas qub, PVC;
B. Nyob rau hauv ntau yam huab cua, nws muaj kev hloov pauv zoo.
02. Lub kaw lus rwb thaiv tsev phab ntsa sab nraud
① Cov nyhuv rau cov av nplaum tshiab
A. Txuas ntxiv cov sijhawm ua haujlwm;
B. Txhim kho qhov kev ua haujlwm ntawm kev khaws dej kom ntseeg tau tias cov cement tau noo;
C. Txhim kho kev ua haujlwm tau zoo.
② Cov nyhuv rau cov mortar khov kho
A. Nws muaj kev nplaum zoo rau polystyrene board thiab lwm yam substrates;
B. Kev ywj pheej zoo heev thiab kev cuam tshuam tsis kam;
C. Cov dej ua pa zoo heev;
D. Cov dej tsis zoo;
E. Kev tiv thaiv huab cua zoo.
03. Kev ntsuas tus kheej
① Cov nyhuv rau cov av nplaum tshiab
A. Pab txhim kho kev txav mus los;
B. Txhim kho kev sib koom ua ke thiab txo qhov delamination;
C. Txo cov npuas dej;
D. Txhim kho qhov du ntawm qhov chaw;
E. Tsis txhob tawg ua tej daim me me thaum ntxov.
② Cov nyhuv rau cov mortar khov kho
A. Txhim kho qhov tawg tsis kam ntawm tus kheej-leveling;
B. Txhim kho lub zog khoov ntawm kev tswj tus kheej;
C. Ua kom zoo dua qhov kev tiv thaiv kev hnav ntawm tus kheej;
D. Ua kom lub zog ntawm kev sib txuas ntawm tus kheej nce ntxiv.
04. Putty
① Cov nyhuv rau cov av nplaum tshiab
A. Txhim kho kev tsim kho;
B. Ntxiv cov dej kom khaws cia tau zoo dua qub;
C. Ua kom yooj yim ua haujlwm;
D. Tsis txhob tawg ua tej daim me me thaum ntxov.
② Cov nyhuv rau cov mortar khov kho
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.
05. Cov tshuaj nplaum tsis muaj dej
① Cov nyhuv rau cov tshuaj khib 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;
C. Ua kom yooj yim ua haujlwm;
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 lub zog sib koom ua ke ntau ntxiv.
Lub sijhawm tshaj tawm: Lub Peb Hlis-31-2023