Momwe mungasinthire constructability wa mapadi pa kutentha khoma m'chilimwe

Panopa, yatsala pang'ono kulowa m'chilimwe, ndipo kutentha kumakhala kwakukulu, makamaka kumpoto.Kutentha kwambiri ndipo mpweya ndi wouma.Kutentha kwa pamwamba pa khoma kumatha kufika 60 ° C.Chifukwa cha kutentha, cellulose nthawi zambiri imakhala ndi zovuta monga kusamanga bwino komanso kuchotsa ufa pomanga.Chifukwa chachikulu ndi chakuti chifukwa cha kutentha kwa khoma, kusungirako madzi kwa putty sikwabwino, kotero kuti madzi mu putty amatengedwa mwamsanga kapena amatuluka nthunzi ndi khoma, kotero kuti putty sangathe kuphimbidwa mobwerezabwereza ndi kukanda.Kuphulika ndi kuphulika kumawoneka.Momwe mungasinthire kusungidwa kwamadzi kwa powdery kunja kwa khoma putty makamaka ali ndi njira izi:

1. Wonjezerani kuchuluka kwa cellulose ether

Cellulose ether imakhala ndi madzi abwino osungira madzi, koma ntchito yosungira madzi sikuwonjezeka pambuyo pa kuchuluka kwa cellulose ether kuwonjezeredwa.Panthawi imodzimodziyo, kuwonjezeka kwa cellulose kumawonjezera kukhuthala kwa putty ndipo kumanga sikuli kosalala.Kuphatikiza apo, mtengo wa putty ukuwonjezeka.

2. Wonjezerani kuchuluka kwa lignocellulose

Lignocellulose imakhala ndi mphamvu yosungira madzi.Kuphatikizika kwa ulusi wamatabwa kumapangitsa kuti zinthu zisamasungidwe bwino, zimapangitsa kuti zinthu ziziyenda bwino, ndipo zimatha kusintha magwiridwe antchito nthawi yomweyo, koma mfundo yosungira madzi ya lignocellulose ndi yosiyana ndi cellulose.Ili ndi chikhalidwe cha kuyamwa tsitsi.(Kuyendetsa madzi), padzakhala chinyezi pakati pa ulusi uliwonse, ndipo pamene chinyezi m'madera ozungulira a ulusiwo chimasintha ndikuchepa, chinyezi pakati pa ulusi chidzatulutsidwa mofanana.Nthawi yotsegula, yosavuta kusweka.Komabe, chifukwa makulidwe a putty pakhoma lakunja ndi woonda kwambiri, makulidwe a zokutira zilizonse ndi 0.5-1mm.Pamene kutentha kwa pamwamba pa m'munsi ndi kutentha kwa mpweya kumakhala kokwera kwambiri, ntchito yake yosungira madzi sikuwonekera, ndipo kubwereza mobwerezabwereza kupaka ntchito kumakhala pafupifupi.

3. Wonjezerani kuchuluka kwa polima

Pa makoma okhala ndi putty woonda, mpweya wouma komanso kutentha kwapansi, kukulitsa kuchuluka kwa polima ndi njira imodzi yabwino yopangira ma putty mobwerezabwereza kukanda katundu, koma mtengo wa redispersible latex ufa ndi wokwera kwambiri, kuchuluka kwakukulu kudzawonjezeka kwambiri. mtengo wa putty.Itha kukhalanso ndi gawo labwino powonjezera pang'ono ufa wa mowa wa polyvinyl, koma kukhuthala kwa ufa wa polyvinyl mowa ndi wokulirapo, womwe ungakhudze magwiridwe antchito, ndipo katundu wa mchenga wa putty si wabwino..

4. Onjezani mafuta a polima

Kupyolera muyeso, zimaganiziridwa kuti ndi chisankho chabwino kuwonjezera mafuta ochuluka kwambiri ku khoma lakunja la putty m'malo otentha kwambiri m'chilimwe.Mafutawa ndi a polima, ndipo mafuta opangira ma rheological cholinga chake ndi kupititsa patsogolo ntchito yomanga pamakina a simenti.Nthawi yotseguka komanso magwiridwe antchito osasintha.Kumawonjezera kugwira ntchito ndi kulimba kwa matope, mapulasitala, ma renders, mapulasitala ndi zomatira ndikuletsa delamination ya simenti yodziyika yokha.Chifukwa chosungira madzi ndikuti pali magulu ambiri ogwira ntchito a hydrophilic pa unyolo wake wa maselo.Pankhani ya mobwerezabwereza kupala ndi ❖ kuyanika, izo sadzataya madzi, ali kwambiri madzi posungira ntchito, ndipo ali thickening ndi thixotropy pa nthawi yomweyo, kupanga yomanga yosalala ndi pang'ono m'malo mapadi, koma mtengo wake kokha mapadi efa, ndi Mlingo wake ndi 0.1-0.2%., ndi zinthu zotsika mtengo kwambiri, ngati zimagwiritsidwa ntchito pamodzi ndi cellulose ether, lignocellulose, ndi redispersible latex powder, zotsatira zake zidzakhala bwino.