Mtondo wodziyimira pawokha ukhoza kudalira kulemera kwake kuti upange maziko athyathyathya, osalala komanso olimba pagawo laling'ono poyala kapena kumangirira zida zina. Panthawi imodzimodziyo, imatha kupanga zomangamanga zazikulu komanso zogwira mtima. Choncho, madzi amadzimadzi kwambiri ndi gawo lofunika kwambiri la matope odzipangira okha Kuwonjezera apo, ayenera kukhala ndi madzi ena osungira madzi ndi mphamvu zomangirira, palibe chodabwitsa cha tsankho la madzi, komanso kukhala ndi zizindikiro za kutentha kwa kutentha ndi kutentha kochepa.
Kawirikawiri, matope odzipangira okha amafunikira madzi abwino. Cellulose ether ndi chowonjezera chachikulu cha matope okonzeka osakaniza. Ngakhale ndalama zomwe zawonjezeredwa ndizochepa kwambiri, zimatha kusintha kwambiri ntchito yamatope. Ikhoza kupititsa patsogolo kusasinthasintha, kugwira ntchito komanso kugwirizana kwa matope. ntchito ndi kusunga madzi. Zimagwira ntchito yofunika kwambiri m'munda wamatope okonzeka osakaniza.
1 madzimadzi
Ma cellulose ether ali ndi chikoka chofunikira pakusunga madzi, kusasinthika ndi kapangidwe ka matope odzipangira okha. Makamaka ngati matope odzipangira okha, fluidity ndi chimodzi mwa zizindikiro zazikulu zowunikira ntchito yodzikweza. Pansi pa malo owonetsetsa kuti matope apangidwe bwino, madzi amadzimadzi amatha kusinthidwa mwa kusintha kuchuluka kwa cellulose ether. Komabe, ngati mlingo uli wochuluka kwambiri, madzi amadzimadzi a matope adzachepetsedwa, kotero mlingo wa cellulose ether uyenera kuyendetsedwa mkati mwazokwanira.
2 kusunga madzi
Kusungidwa kwamadzi kwa matope ndi chizindikiro chofunikira choyezera kukhazikika kwa zigawo zamkati zamatope osakanikirana a simenti. Kuti mukwaniritse bwino momwe ma hydration amachitira ndi zinthu za gel, kuchuluka kwa cellulose ether kumatha kusunga chinyezi mumatope kwa nthawi yayitali. Nthawi zambiri, kusungidwa kwa madzi kwa slurry kumawonjezeka ndi kuchuluka kwa cellulose ether. Mphamvu yosungira madzi ya cellulose ether ingalepheretse gawo lapansi kuti lisatenge madzi ochulukirapo mwachangu, ndikulepheretsa kutuluka kwa madzi, kuti kuwonetsetsa kuti chilengedwe cha slurry chimapereka madzi okwanira a simenti. Kuphatikiza apo, kukhuthala kwa cellulose ether kumathandizanso kwambiri kusungidwa kwamadzi kwamatope. Kuchuluka kwa mamasukidwe amphamvu, kumapangitsa kuti madzi asungidwe bwino. Nthawi zambiri, ether ya cellulose yokhala ndi mamasukidwe a 400mpa.s imagwiritsidwa ntchito kwambiri pamatope odziyimira pawokha, omwe amatha kuwongolera magwiridwe antchito amatope ndikuwonjezera kuphatikizika kwa matope.
3 kutseka nthawi
Ma cellulose ether ali ndi vuto linalake lochepetsa matope. Ndi kuchuluka kwa zomwe zili mu cellulose ether, nthawi yoyika matope imatalika. Kuchedwetsa kwa cellulose ether pa phala la simenti makamaka kumadalira kuchuluka kwa m'malo mwa gulu la alkyl, ndipo sizikugwirizana kwenikweni ndi kulemera kwake kwa maselo. Kuchepa kwa kuchuluka kwa alkyl m'malo, kumapangitsa kuti hydroxyl ichuluke, komanso kuchedwetsa kowonekera. Ndipo zomwe zili mu cellulose ether, ndizodziwikiratu kwambiri kuchedwa kwa filimu yovuta kwambiri pa hydration yoyambirira ya simenti, kotero kuti kuchepetsako kumawonekeranso.
4 Flexural mphamvu ndi compressive mphamvu
Nthawi zambiri, mphamvu ndi imodzi mwazofunikira zowunikira pakuchiritsa kwa zida za simenti zopangidwa ndi simenti pazosakaniza. Pamene zili mu cellulose ether ukuwonjezeka, compressive mphamvu ndi flexural mphamvu ya matope adzachepa.
5 mphamvu ya mgwirizano
Cellulose ether imakhudza kwambiri magwiridwe antchito amatope. Ma cellulose ether amapanga filimu ya polima ndi kusindikiza pakati pa simenti ya hydration particles mu dongosolo lamadzimadzi, lomwe limalimbikitsa madzi ambiri mu filimu ya polima kunja kwa tinthu tating'onoting'ono ta simenti, zomwe zimathandiza kuti simenti ikhale yokwanira, motero kuwongolera mgwirizano. mphamvu ya phala pambuyo kuumitsa. Pa nthawi yomweyi, kuchuluka koyenera kwa cellulose ether kumawonjezera pulasitiki ndi kusinthasintha kwa matope, kumachepetsa kusasunthika kwa mawonekedwe osinthika pakati pa matope ndi gawo lapansi, ndipo kumachepetsa kutsetsereka kwa mphamvu pakati pa zolumikizira. Pamlingo wina, mgwirizano pakati pa matope ndi gawo lapansi umakulitsidwa. Komanso, chifukwa cha kukhalapo kwa mapadi etere mu phala simenti, wapadera mawonekedwe kusintha zone ndi mawonekedwe wosanjikiza aumbike pakati pa matope particles ndi mankhwala hydration. Izi mawonekedwe wosanjikiza zimapangitsa mawonekedwe kusintha zone kusinthasintha ndi zochepa okhwima, kotero, kuti matope ndi amphamvu chomangira mphamvu.
Nthawi yotumiza: Mar-14-2023