Hydroxypropyl Methylcellulose (HPMC) ndi polima wosungunuka m'madzi omwe amagwiritsidwa ntchito kwambiri pomanga, zokutira, mankhwala, chakudya ndi zina. Popanga simenti, HPMC ikugwiritsidwa ntchito kwambiri. Magwiridwe ake apadera komanso mawonekedwe ake apamwamba zimapangitsa kuti ikhale chowonjezera chofunikira kwambiri muzinthu za simenti.
1. Kuwongolera magwiridwe antchito ndi ntchito yomanga
HPMC akhoza kwambiri patsogolo workability wa zosakaniza simenti. Popanga simenti, madzimadzi ndi kugwirizana kwa osakaniza ndi zinthu zofunika zomwe zimakhudza khalidwe la zomangamanga. HPMC ali bwino kubalalitsidwa ndi thickening katundu m'madzi, kupanga simenti slurry mosavuta kusonkhezera, kuthira ndi yosalala pomanga. Kusintha kumeneku sikungowonjezera luso la zomangamanga, komanso kumachepetsanso kutulutsa thovu ndikuwonetsetsa kuti konkire imakhala yolimba komanso yabwino.
2. Konzani kasungidwe ka madzi
HPMC ili ndi zinthu zabwino kwambiri zosungira madzi ndipo imatha kuchepetsa kutuluka kwa madzi. Izi ndizofunikira kwambiri pakuchiritsa kwa zinthu za simenti. Simenti imafuna madzi okwanira kuti hydration reaction ichitike panthawi yochiritsa, ndipo kugwiritsa ntchito HPMC kumatha kukulitsa nthawi yosungira madzi ya simenti ya simenti ndikuwonetsetsa kuti madzi amatha kulowa mkati mwa tinthu tating'ono ta simenti, motero kumapangitsa mphamvu ndi kulimba kwa simentiyo. Makamaka m'malo otentha kapena owumitsa mpweya, ntchito yosunga madzi ya HPMC ndiyofunikira kwambiri.
3. Limbikitsani kukana ming'alu
Popanga ndi kugwiritsa ntchito zinthu za simenti, kuchitika kwa ming'alu ndi vuto lofala. Kugwiritsa ntchito HPMC kumatha kuchepetsa kuchitika kwa ming'alu. Chifukwa cha kusungidwa bwino kwa madzi, HPMC imatha kuchepetsa kuyanika kwamadzi komwe kumachitika chifukwa cha nthunzi yamadzi, potero kuchepetsa chiopsezo cha ming'alu yomwe imayamba chifukwa cha kuchepa. Kuphatikiza apo, HPMC imatha kupanganso maukonde ofananirako pamatrix a simenti, kukulitsa kulimba ndi kukana kwa zinthuzo, ndikuwongolera kulimba kwathunthu.
4. Sinthani kumamatira
HPMC imatha kupititsa patsogolo mgwirizano pakati pa simenti ndi gawo lapansi. Makamaka pogwiritsira ntchito zipangizo za powdery, kukhuthala kwa HPMC kumatha kusintha bwino kumamatira kwa simenti slurry. Pakugwiritsa ntchito zomatira matailosi, gypsum ndi zida zina zomangira, HPMC imatha kutsimikizira mgwirizano wamphamvu pakati pa zida, kupewa kugwetsa ndi kugwa, ndikuwonetsetsa kuti zomangamanga zili bwino.
5. Kupititsa patsogolo kuyenda ndi ntchito
Kuwonjezera kwa HPMC kumatha kusintha bwino madzi a simenti slurry, kupanga kusakaniza kufalikira komanso kosavuta kupanga panthawi yomanga. Makamaka pamapangidwe okhala ndi zodzaza kwambiri, HPMC imatha kuchepetsa kukhuthala kwa osakaniza ndikuwongolera madzi ake, potero kumapangitsa kuti zomangamanga zikhale bwino. Izi ndizofunikira makamaka pakumanga kwakukulu, komwe kungathe kupititsa patsogolo luso komanso luso la zomangamanga.
6. Kusinthasintha kwamphamvu
HPMC ili ndi kusinthasintha kwakukulu ndipo imagwirizana ndi mitundu yosiyanasiyana ya simenti ndi zina zowonjezera. Kaya ndi simenti wamba ku Portland, simenti yowumitsa mwachangu, kapena simenti yapadera, HPMC imatha kugwiritsa ntchito zabwino zake. Kuphatikiza apo, HPMC itha kugwiritsidwanso ntchito kuphatikiza ndi zina zowonjezera mankhwala (monga othandizira mpweya, ochepetsa madzi, etc.) kuti apititse patsogolo magwiridwe antchito a konkriti ndikukwaniritsa zosowa zosiyanasiyana zomanga.
7. Sinthani kulimba
Zinthu za simenti zogwiritsa ntchito HPMC zimakhala zolimba kwambiri. HPMC imatha kuteteza kukalamba ndi kuwonongeka kwa magawo a simenti ndikuwongolera kukana kwawo kwa asidi ndi alkali, kukana chinyezi, komanso kukana kuzizira. Pochepetsa kutaya madzi, HPMC imatsimikizira kuti simenti imatha kuchitapo kanthu panthawi ya hydration, zomwe zimapangitsa kuti pakhale mphamvu komanso kukhazikika. Izi ndizofunikira pakugwiritsa ntchito ndi kukonza kwanthawi yayitali zomangira.
8. Zobiriwira komanso zachilengedwe
Monga zakuthupi polima zachilengedwe, HPMC ali wabwino chitetezo katundu katundu. Palibe zinthu zovulaza zomwe zidzatulutsidwa panthawi yopanga ndikugwiritsa ntchito, ndipo zimakwaniritsa zofunikira za nyumba zamakono zobiriwira. Ndikusintha kosalekeza kwa zofunikira zoteteza chilengedwe pantchito yomanga, kugwiritsa ntchito HPMC kwalandira chidwi chochulukirapo. Zogulitsa za simenti zogwiritsa ntchito HPMC zimachita bwino kwambiri komanso zimathandizira kuteteza chilengedwe.
9. Kugwiritsa ntchito ndalama
Ngakhale mtengo wa HPMC popanga ndi wokwera kwambiri, zabwino zingapo zomwe zimabweretsa zimatha kuchepetsa kugwiritsa ntchito zina zowonjezera, potero kukulitsa mtengo wonse. Kuphatikiza apo, kugwiritsa ntchito HPMC kumatha kupititsa patsogolo ntchito yomanga ndikuchepetsa nthawi yomanga, potero kumachepetsanso ndalama za polojekiti. Ponseponse, kugwiritsa ntchito HPMC ndikotheka mwachuma.
HPMC ili ndi maubwino ambiri pakupanga simenti, kuphatikiza kuyendetsa bwino ntchito, kusunga madzi, kukana ming'alu, kumamatira, kutulutsa madzi, ndi zina zotere. Makhalidwewa amapangitsa HPMC kukhala chowonjezera chofunikira pakupanga simenti yamakono. Pamene zofunikira zamakampani opanga zinthu zogwirira ntchito zikuchulukirachulukira, kugwiritsa ntchito HPMC kufalikira, kulimbikitsa chitukuko cha zinthu za simenti motsogozedwa ndipamwamba komanso kuteteza chilengedwe.
Nthawi yotumiza: Jul-22-2024