Kusiyana kwakukulu pakati pa matope owuma ndi matope achikhalidwe ndikuti matope owuma amasinthidwa ndi zowonjezera zochepa za mankhwala. Kuwonjezera mtundu umodzi wa zowonjezera ku matope owuma kumatchedwa kusintha koyamba, kuwonjezera zowonjezera ziwiri kapena zingapo ndi kusintha kwachiwiri. Ubwino wa matope owuma umadalira kusankha kolondola kwa zigawo ndi kulumikizana ndi kufananiza kwa zigawo zosiyanasiyana. Zowonjezera za mankhwala ndi zodula ndipo zimakhudza kwambiri mawonekedwe a matope owuma. Chifukwa chake, posankha zowonjezera, kuchuluka kwa zowonjezera kuyenera kukhala koyambirira. Izi ndi njira zazifupi zoyambira posankha zowonjezera za mankhwala a cellulose ether.
Cellulose ether yomwe imadziwikanso kuti rheological modifier mtundu wa kusakaniza komwe kumagwiritsidwa ntchito kusintha mawonekedwe a rheological a mixed mortar yatsopano, yomwe imagwiritsidwa ntchito pafupifupi mu mtundu uliwonse wa mixer. Makhalidwe otsatirawa ayenera kuganiziridwa posankha mtundu ndi kuchuluka kwa zomwe zawonjezeredwa:
(1) Kusunga madzi kutentha kosiyanasiyana;
(2) kukhuthala, kukhuthala;
(3) Ubale pakati pa kusinthasintha ndi kutentha, komanso momwe zimakhudzira kusinthasintha kwa electrolyte;
(4) mawonekedwe ndi kuchuluka kwa etherification;
(5) kusintha kwa thixotropy ndi kuthekera koyika matope pamalo ake (zomwe ndizofunikira kuti matope apachikidwe pamwamba poyimirira);
(6) Kuchuluka kwa kusungunuka, momwe zinthu zilili komanso kutha kwa kusungunuka.
Kuwonjezera pa kuwonjezera ether ya cellulose mu matope ouma (monga methyl cellulose ether), ikhozanso kuwonjezera ester ya vinyl polyvinyl acid, kutanthauza kusintha kwachiwiri. Chomangira chosapangidwa mu matope (simenti, gypsum) chingatsimikizire mphamvu yolimba kwambiri, koma sichikhudza mphamvu yokoka ndi mphamvu yopindika. Ester ya vinyl polyvinyl imapanga filimu yolimba mu dzenje la miyala ya simenti, matope opangidwa amatha kupirira kufooka kwakukulu, komanso kuletsa kuwonongeka. Zatsimikiziridwa ndi machitidwe kuti powonjezera kuchuluka kosiyanasiyana kwa ether ya methyl cellulose ndi ester ya vinyl polyvinyl mu matope ouma, matope omangira mbale yopyapyala, matope opaka pulasitala, matope opaka pulasitala okongoletsera, matope opaka konkire opangidwa ndi mpweya komanso matope odziyimira pawokha pansi pothira akhoza kukonzedwa. Kusakaniza ziwirizi sikungowonjezera ubwino wa matope okha, komanso kumawonjezera kwambiri magwiridwe antchito omanga.
Pogwira ntchito, kuti muwongolere magwiridwe antchito onse, ndikofunikira kugwiritsa ntchito zosakaniza zingapo. Kuphatikiza bwino pakati pa gawo lowonjezera, mulingo woyenera wa mlingo, gawo, kuchokera mbali zosiyanasiyana kumatha kukhala ndi zotsatira zina kuti ntchito ya matope iyende bwino, koma kusintha kwake kwa matope akagwiritsidwa ntchito kokha kumakhala kochepa, nthawi zina kumakhala ndi zotsatira zoyipa, monga ulusi umodzi wopangidwa, kuwonjezera kuuma kwa matope, kuchepetsa kuchuluka kwa stratification nthawi imodzi. Komabe, kugwiritsa ntchito madzi kwa matope kumawonjezeka kwambiri ndikusungidwa mu slurry, zomwe zimapangitsa kuti mphamvu yokakamiza ichepe. Wothandizira mpweya akawonjezeredwa, digiri ya delamination ya matope ndi kugwiritsa ntchito madzi zimatha kuchepa kwambiri, koma mphamvu yokakamiza ya matope idzachepa chifukwa cha thovu zambiri. Konzani matope omangira kuti agwire bwino ntchito, popewa kuwononga katundu wina, mphamvu ya matope omangira, kuchuluka kwa matayala ndi kukwaniritsa zofunikira za uinjiniya ndi malamulo okhudza ukadaulo, nthawi yomweyo, musagwiritse ntchito laimu putty, kupulumutsa simenti, kuteteza chilengedwe, ndi zina zotero, kuchokera ku kuchepetsa madzi, kukhuthala, kukhuthala kwa madzi ndi pulasitiki yolowa mumlengalenga, ndikofunikira kuchitapo kanthu mokwanira kuti mupange ndikugwiritsa ntchito zosakaniza zophatikizika.
Nthawi yotumizira: Epulo-29-2022