Ma cellulose ether ndi gulu la mankhwala a organic polymer omwe amagwiritsidwa ntchito kwambiri popanga zinthu zomangira, makamaka mu konkriti ndi matope. Monga chowonjezera, cellulose ether imakhudza kwambiri zinthu zambiri za konkriti, kuphatikizapo kugwira ntchito bwino, kusunga madzi, mphamvu, ndi zina zotero.
1. Zotsatira pa kugwira ntchito bwino
Ma ether a cellulose amatha kusintha kwambiri kugwira ntchito kwa konkriti, makamaka panthawi yosakaniza ndi kumanga. Ether ya cellulose imakhala ndi mphamvu yabwino yokhuthala ndipo imatha kuwonjezera kukhuthala ndi kusinthasintha kwa konkriti, zomwe zimapangitsa kuti ikhale yosavuta kugwiritsa ntchito ndi kupanga mawonekedwe. Kuchita bwino kumeneku ndikofunikira kwambiri panjira zomangira zomwe zimafuna kusinthasintha kwakukulu, monga konkriti yopompedwa ndi shotcrete.
Cellulose ether imatha kupititsa patsogolo kukhuthala kwa konkriti ndikuchepetsa kukangana pakati pa tinthu tating'onoting'ono panthawi yosakaniza, motero imawonjezera kufanana ndi magwiridwe antchito a konkriti. Izi zimathandiza konkriti kukhala ndi mawonekedwe abwino komanso kumalizidwa bwino panthawi yomanga.
2. Zotsatira pa kusunga madzi
Cellulose ether ili ndi mphamvu yosunga madzi ndipo kapangidwe kake ka mamolekyu kali ndi magulu ambiri okonda madzi, omwe amatha kuyamwa ndikusunga chinyezi bwino. Khalidweli limalola ma cellulose ethers kusintha kwambiri kusunga madzi mu konkire, makamaka m'malo ouma kapena kapangidwe kopyapyala. Ma cellulose ethers amatha kuchepetsa kutuluka kwa madzi mwachangu ndikupewa ming'alu ndi kuchepa kwa mphamvu komwe kumachitika chifukwa cha kutayika kwa madzi koyambirira mu konkire.
Mwa kuwonjezera kusunga madzi kwa konkriti, cellulose ether imathanso kukulitsa nthawi yochitira hydration ya simenti, zomwe zimathandiza kuti tinthu ta simenti tizikhala ndi madzi okwanira, motero zimapangitsa kuti konkriti ikhale yolimba komanso yolimba. Makamaka pansi pa mikhalidwe youma yomanga, monga kumanga chilimwe kapena malo otentha kwambiri, kusunga madzi kwa cellulose ether kumachita gawo lofunikira pakugwira ntchito komaliza kwa konkriti.
3. Mphamvu pa mphamvu
Cellulose ether imakhudza kwambiri kukula kwa mphamvu ya konkire, makamaka pa mphamvu yoyambirira. Popeza cellulose ether imathandizira kusunga madzi a konkire, kuchuluka kwa madzi m'tinthu ta simenti kumakhala kokwanira, ndipo kuchuluka kwa zinthu zoyambira kumadzi kumawonjezeka, motero kumawonjezera mphamvu yoyambirira ya konkire. Nthawi yomweyo, cellulose ether imathanso kuwonjezera mphamvu yomaliza ya konkire mwa kukonza kufanana kwa kapangidwe kake kamkati.
Tiyenera kudziwa kuti mlingo wa cellulose ether uyenera kukhala woyenera. Ngati mlingowo ndi waukulu kwambiri, ngakhale kuti kusunga madzi ndi rheology kwawonjezeka, zitha kukhudza mphamvu yomaliza ya konkire, makamaka mphamvu yomaliza. Izi zili choncho chifukwa kuchuluka kwa cellulose ether kumatha kulepheretsa madzi kulowa mu tinthu ta simenti ndikuchepetsa mphamvu zawo zomaliza.
4. Zotsatira pa kuchepa ndi kusweka kwa konkire
Cellulose ether imatha kuchepetsa bwino kuuma koyambirira komanso ming'alu ya konkire powonjezera kusunga madzi kwa konkire. Ming'alu ya kuuma nthawi zambiri imayamba chifukwa cha kuchuluka kwa nkhawa mkati mwa konkire komwe kumachitika chifukwa cha kutuluka kwa madzi ambiri. Kusunga madzi kwa cellulose ether kumatha kuchepetsa izi, zomwe zimathandiza kuti konkire ikhale yonyowa kwa nthawi yayitali pamalo ouma, motero imachepetsa bwino ming'alu.
Kukhuthala kwa ether ya cellulose mu konkire kungathandize kulimbitsa mphamvu yolumikizirana ya konkire, kulimbitsa kukhuthala ndi kulimba kwa kapangidwe kake kamkati, ndikuchepetsa chiopsezo cha ming'alu. Katunduyu amagwiritsidwa ntchito kwambiri mu konkire wolemera, matope owonda kapena zinthu zopangidwa ndi simenti.
5. Zotsatira pa kulimba kwa konkire
Ma cellulose ethers amalimbikitsa kulimba kwa konkire m'njira zambiri. Choyamba, ma cellulose ethers amatha kulimbitsa kukana chisanu ndi kukana kukokoloka kwa mchere kwa konkire. Chifukwa cellulose ether imatha kuchepetsa ma capillary pores mkati mwa konkire ndikuchepetsa njira yolowera madzi, konkire imalimba kwambiri ku nkhanza zakunja m'malo ozizira kapena m'malo omwe mchere umawonongeka.
Ma cellulose ether amathandizira kulimba kwa konkire komanso kukana ming'alu mwa kukonza kusunga madzi ndi kukula kwa mphamvu zake. Makhalidwe amenewa ndi othandiza kwambiri pa moyo wautali wa konkire, makamaka m'milatho, m'matanthwe ndi mapulojekiti ena omwe amakhudzidwa kwambiri ndi kuwonongeka kwa chilengedwe. Kuwonjezera kwa cellulose ether kungathandize kuti konkire ikhale yolimba.
6. Zotsatira pa makhalidwe ogwirizana ndi konkire
Ma cellulose ethers nawonso ali ndi zotsatira zabwino pa mphamvu zomangira za konkriti, makamaka pa mphamvu yomangira pakati pa matope ndi maziko. Popeza cellulose ether imatha kuwonjezera kukhuthala kwa konkriti, zimakhala zosavuta kukhudzana ndi zinthu zomangira panthawi yomanga, motero zimapangitsa kuti awiriwa azigwira ntchito bwino. Izi ndizofunikira kwambiri pa ntchito monga kupaka pulasitala pakhoma ndi kukonza zomwe zimafuna kumamatira kwambiri.
Monga chosakaniza chokhala ndi magwiridwe antchito abwino kwambiri, cellulose ether imakhudza bwino kugwira ntchito, kusunga madzi, mphamvu, kusweka kwa konkire komanso kulimba kwa konkire. Mwa kuwonjezera kuchuluka koyenera kwa cellulose ether, magwiridwe antchito onse a konkire amatha kukonzedwa bwino kuti akwaniritse zosowa zosiyanasiyana zapadera zomangira. Komabe, mlingo wa cellulose ether uyenera kulamulidwa moyenera kutengera zosowa zenizeni zaukadaulo kuti apewe kugwiritsa ntchito mopitirira muyeso zomwe zingayambitse kuchepa kwa mphamvu kapena zotsatira zina zoyipa.
Nthawi yotumizira: Sep-19-2024