Hydroxypropyl Methylcellulose (HPMC) ndi ether yosakhala ionic cellulose yomwe imagwiritsidwa ntchito kwambiri muzomangira, makamaka pakusintha konkire ndi matope. Chigawo chake chachikulu ndi mankhwala omwe amapangidwa ndi kusintha kwa mankhwala a cellulose, omwe amatha kusungunuka m'madzi kuti apange colloidal solution. Monga chowonjezera cha konkire, mawonekedwe apadera a HPMC amthupi ndi mankhwala amapereka konkriti zosiyanasiyana zosintha.
1. Kuwongolera magwiridwe antchito
1.1. Wonjezerani pulasitiki
HPMC kumawonjezera pulasitiki ndi fluidity konkire, kupangitsa kukhala kosavuta kuumba pomanga. Kusungidwa kwa madzi kwa HPMC kumapangitsa kuti konkire yosakaniza ikhale ndi nthawi yayitali yogwira ntchito, potero imachepetsa kuthamanga kwa kuyanika. Izi ndizofunikira kwambiri pamapulojekiti akuluakulu a konkire kapena ntchito zomwe zimafuna kuthira kwa nthawi yayitali, chifukwa zimalepheretsa kusakaniza kuti zisaume msanga komanso kuchepetsa zovuta zomanga.
1.2. Konzani mafuta
HPMC ali lubricity kwambiri, amene angathe kuchepetsa mikangano pakati pa konkire ndi formwork kapena malo ena, potero kuchepetsa kukana pomanga. Izi zimathandizira kuchepetsa kuvala kwa makina omanga ndikuwongolera magwiridwe antchito.
2. Konzani kasungidwe ka madzi
2.1. Kuchedwetsa madzi evaporation
Maselo a HPMC amatha kuyamwa madzi ambiri, motero amapanga makina osungira madzi mkati mwa konkire. Kutha kusunga madzi kumeneku kumachedwetsa kusungunuka kwa madzi, kumatsimikizira kuti konkire imakhalabe ndi madzi okwanira panthawi yowumitsa, ndipo imathandizira kuti simenti iwonongeke.
2.2. Pewani ming'alu ya pulasitiki
Powonjezera kusungirako madzi kwa konkire, HPMC imatha kuteteza ming'alu ya pulasitiki mu konkire poyambira kuumitsa. Izi ndizofunikira kuti konkriti ikhale yolimba komanso yolimba, makamaka m'malo otentha komanso owuma.
3. Wonjezerani kumamatira
3.1. Sinthani kumamatira pakati pa konkriti ndi zida zolimbikitsira
HPMC kumawonjezera adhesion pakati konkire ndi zitsulo mipiringidzo kapena zipangizo zina kulimbikitsa. Kumamatira kowonjezerekaku kumatsimikizira kulumikizana kwabwino pakati pa konkriti ndi zida zolimbikitsira, zomwe zimathandiza kupititsa patsogolo mphamvu zonse ndi kukhazikika kwa kapangidwe kake.
3.2. Sinthani ❖ kuyanika kumamatira
Mu kupopera mbewu mankhwalawa kapena pulasitala ntchito, HPMC akhoza kusintha adhesion wa pamwamba konkire, potero kuonetsetsa kuti zokutira zosiyanasiyana kapena zomalizitsa akhoza bwino kumamatira pamwamba konkire. Izi ndizofunikira kwambiri pakuchiza kwakunja kwa nyumba komanso kulimba kwa gawo loteteza.
4. Sinthani kukana kuvala ndi kukana dzimbiri
4.1. Wonjezerani kukana kuvala
Kugwiritsiridwa ntchito kwa HPMC kumatha kukulitsa kukana kovala kwa konkire ndikuchepetsa kuthekera kwa kuvala pamwamba. Izi ndizofunikira kwambiri pazida monga pansi kapena misewu yomwe imayenera kupirira kuvala kwamakina pafupipafupi.
4.2. Limbikitsani kukana dzimbiri
Mwa kuwongolera kaphatikizidwe ndi kusunga madzi konkire, HPMC imatha kutetezanso bwino kulowa kwa zinthu zovulaza, potero kuwongolera kukana kwa dzimbiri kwa konkriti. Makamaka m'malo okhala ndi ayoni a kloridi kapena zinthu zina zowononga, HPMC imatha kukulitsa moyo wautumiki wa konkriti.
5. Kupititsa patsogolo ntchito yomanga
5.1. Wonjezerani pompopompo
HPMC imathandizira kutulutsa konkriti, ndikupangitsa kuti ikhale yosalala panthawi yamayendedwe. Kusintha kumeneku kumapangitsa kuti konkire ipopedwe pamtunda wautali popanda kuchepetsa mphamvu, zomwe zimapindulitsa kwambiri pomanga nyumba zapamwamba kapena zazikulu.
5.2. Chepetsani tsankho ndi magazi
HPMC ikhoza kuchepetsa kwambiri tsankho ndi kutaya magazi mu konkire, kuonetsetsa kufanana pamayendedwe ndi kuthira. Izi zimathandiza kupititsa patsogolo ubwino ndi kusasinthasintha kwa kapangidwe komaliza ndikupewa zolakwika zosagwirizana pambuyo pouma konkire.
6. Limbikitsani mphamvu
6.1. Wonjezerani mphamvu zoyamba
Ntchito HPMC akhoza imathandizira hydration anachita simenti, potero kuwongolera oyambirira mphamvu konkire. Izi ndizofunikira kwambiri pama projekiti aumisiri omwe akuyenera kumangidwa ndikugwiritsidwa ntchito mwachangu.
6.2. Limbikitsani mphamvu za nthawi yayitali
Popeza HPMC imapangitsa kuti konkire ikhale yolimba komanso yolimba, imatha kukhalabe ndi mphamvu ya konkire pakapita nthawi, kuonetsetsa kuti nyumbayo ikhale yolimba komanso yokhazikika.
7. Ubwino wa chilengedwe
7.1. Chepetsani kugwiritsa ntchito simenti
Mwa kuwongolera magwiridwe antchito a konkire, HPMC imalola kugwiritsa ntchito simenti kuchepetsedwa nthawi zina. Izi sizimangothandiza kuchepetsa ndalama zomanga, komanso zimachepetsa mpweya woipa wa carbon dioxide umene umapangidwa panthawi yopanga simenti, yomwe ili ndi tanthauzo labwino pachitetezo cha chilengedwe.
7.2. Limbikitsani kagwiritsidwe ntchito ka zinthu
HPMC imapangitsa kusakaniza konkire kukhala kolondola, kumachepetsa zinyalala zakuthupi, ndikupititsa patsogolo kukhazikika kwa zomangamanga.
Hydroxypropyl methylcellulose (HPMC) ili ndi zabwino zambiri monga chowonjezera cha konkire. Ubwinowu ukuphatikiza kuwongolera konkriti, kusunga madzi, kumamatira, kukana kuvala komanso kukana dzimbiri, kupititsa patsogolo ntchito yomanga, ndikuthandizira kukulitsa mphamvu za konkriti ndi mawonekedwe a chilengedwe. Powonjezera HPMC ku konkire, sikuti ntchito yomanga ingasinthidwe ndi khalidwe labwino, koma moyo wautumiki wa nyumbayo ukhoza kukulitsidwa, ndi kukonza ndi kukonzanso ndalama kungachepetse.
Nthawi yotumiza: Jun-27-2024