Self-leveling mortar yog cov khoom siv hmoov qhuav. Tom qab ua tiav, nws tuaj yeem siv tom qab sib tov nrog dej ntawm qhov chaw. Tsuav nws raug thawb tawm nrog lub scraper, lub hauv paus zoo tuaj yeem tau txais. Cov yam ntxwv yog raws li nram no;
Lub hardening ceev yog ceev, thiab koj tuaj yeem taug kev hauv 24 teev
Vim nws ua hauj lwm ceev, nws tsis nkim sij hawm ua lwm yam hauj lwm.
Kev txiav txim siab qhov zoo ntawm tus kheej-leveling mortar tuaj yeem txiav txim los ntawm cov hauv qab no:
1. High fluidity, cohesiveness, tsis muaj los ntshav thiab cais.
2. Lub zog thiab qhov kawg compressive zog tom qab sib tsoo ua tau raws li qhov yuav tsum tau ua
3. Tus nqi hloov pauv me me (uas yog, tsis muaj kev nthuav dav thiab tsis muaj shrinkage).
4. Nyob rau hauv cov xwm txheej ntawm cov dej-cement piv qis, nws muaj rheology zoo;
5, ncav cuag lub teb chaws tus qauv ntawm 24h compressive zog ntau dua 6.0MPa, flexural zog ntau dua 2.0MPa.
Tus kheej-leveling cement reference formula
Raw khoom Additives
42.5 300 Nws
plaster 50
hnyav calcium 150
Xuab zeb 500
Roj hmab hmoov 10
Polycarboxylate 0.5
sm2,5 ua
p803 0.5
mc400 0.7
Tartaric acid 0.8
Cov dej ntxiv yog 24% thiab fluidity mus txog 145 ~ 148
Qee lub sij hawm yog tias lub sijhawm sib xyaw tsis txaus, yuav muaj cov roj me me, cov pob dawb, nag lossis daus, los ntshav, hmoov poob, lub zog, thiab lwm yam, uas yuav tsum tau them sai sai rau cov khoom siv raw ntawm cov mis. Cia peb txheeb xyuas lawv ib leeg.
A. Yuav tiv thaiv cov roj li cas
tshem tawm tartaric acid
Piv txwv li, P803, cov khoom siv raw no yuav ua rau cov roj me me, feem ntau peb ua ntej sib xyaw P803 nrog 1 zaug ntawm cov xuab zeb thiab 1 zaug ntawm calcium carbonate kom txo cov roj.
B, yuav ua li cas tiv thaiv kev tawg
1. Txo cov dej txo tus neeg sawv cev,
2. Ua kom muaj cov cellulose ether ntxiv,
3. Kho qhov gradation ntawm cov xuab zeb.
C, yuav ua li cas tiv thaiv lub zog tsis txaus
1. Qhov siab ntawm alumina cement yog tsawg, thiab 1d lub zog tsis yog raws li tus qauv;
2. Tus nqi ntawm cov hmoov roj hmab tsawg dhau;
3. Ntau dhau retarder ntxiv;
4. Lub formulation system tsis ruaj khov, ua rau nws tus kheej-leveling los ntshav
D, yuav ua li cas tiv thaiv cov pob dawb
1. Cov khoom ntxiv yog ntxhib heev
2. Muaj agglomeration ntawm raw khoom.
E, lub hauv paus ntsiab lus ntawm raw khoom ntxiv:
1. Heavy calcium yog tov nrog siab alumina cement los tsim calcium carbonoaluminate, uas tuaj yeem txhim kho lub zog compressive.
2. Dej txo tus neeg sawv cev tuaj yeem txo cov dej thiab cov cement, thiab txhim kho lub zog thiab kav ntev ntawm cov pob zeb;
3. Methyl cellulose yog siv los ua tus neeg saib xyuas dej kom zoo kom tsis txhob muaj qhov tsis xws luag ntawm tus kheej-leveling mortar uas poob dej sai vim yog txheej nyias nyias;
4. Siv anhydrite ua tus neeg sawv cev nthuav dav thiab siv hexanediol ua tus neeg sawv cev txo qis ua ke kom muaj txiaj ntsig zoo rau kev txo qis. Cov mis no tshawb txog qhov sib piv ntawm txhua qhov sib xyaw, thiab cov kua dej ntawm cov cement-based self-leveling mortar yog ntau dua 130mm hauv 20 feeb.
Post lub sij hawm: Mar-02-2023