Dry yakasanganiswa dhaka inoshandiswa zvakanyanya mumapurojekiti ekuvaka nekuda kwekureruka kwayo uye kushanda kwayo. Iyo ine musanganiswa we simende, jecha, uye zvimwe zvinowedzera, senge cellulose ether, iyo inoita basa rakakosha mukuona kuita kwese kwedhaka. Kunyanya, cellulose ether, inozivikanwawo seHydroxypropyl Methyl Cellulose (HPMC), inoshandiswa kuvandudza kuchengetedza kwemvura kwedhaka rakaoma rakasanganiswa, zvichizosimudzira kuwirirana uye kushanda kwayo.
Mvura yakakosha mukuita hydration yesamende, apo inopindirana nezvidimbu zvesimende kuita chisungo chakasimba chinozoomesa dhaka. Nekudaro, yakawandisa mvura evaporation panguva yekuomesa kana kuseta maitiro kunogona kutungamirira kune nyaya dzakadai sekuputika, shrinkage, uye kuderedzwa simba. Apa ndipo panopinda cellulose ether. Nekuisa cellulose ether mudhaka rakaoma rakasanganiswa, kugona kuchengetedza mvura kunovandudzwa zvakanyanya, zvichidzikamisa zvinokonzeresa zvakaipa zvekukurumidza kubuda kwemvura.
Muvhu rakaoma rakasanganiswa dhaka, cellulose ether inoshanda semvura-inobata agent, iyo inobvumira kwenguva yakareba hydration ye simenti particles. Iyi yakawedzerwa hydration process inovimbisa kuti dhaka rine nguva yakakwana yekuvandudza rakakwana simba uye kusimba. Iyo cellulose ether mamorekuru anoumba chidziviriro chakatenderedza masimende, ichidzikisa mwero wekupuputsika kwemvura uye kuwedzera kuwanikwa kwemvura yehydration. Nekuda kweizvozvo, kuenderana kwedhaka kunovandudzwa, zvichiita kuti zvive nyore kupararira, kuumbwa, uye chimiro panguva yekushandiswa.
Uyezve, cellulose ether inowedzera kushanda kwedhaka rakaoma rakasanganiswa. Inoshanda semafuta ekuzora, inoderedza kupokana pakati pezvinhu zvedhaka uye inogonesa kushanda kwakapfava. Izvi zvakagadziridzwa kushanda hazvingowedzere kugadzirwa asiwo zvinowedzera kunaka kwese kwekuvaka kwakapedzwa. Kushandiswa kwe cellulose ether mune yakaoma yakasanganiswa dhaka zvakare kunoderedza njodzi yekusarura, apo izvo zvinoumbwa zvinopatsanurwa panguva yekufambisa kana kushandiswa. Izvi zvinovimbisa homogenous musanganiswa uye kuenderana kuita kwedhaka.
Pamusoro pezvo, cellulose ether yekuchengetedza mvura inobatsira mukudzora nzira yekurapa yedhaka. Kurapa kwakakodzera kwakakosha kuti uwane inodiwa simba rekupedzisira uye kusimba kwechinhu chekuvaka. Iyo yakareba hydration inopiwa ne cellulose ether inovimbisa kuti dhaka rinoporesa zvakaenzana uye zvakakwana, kubvisa zvingangove zvisina kusimba uye kuwedzera kushanda kwenguva refu.
Zvakakosha kucherechedza kuti basa re cellulose ether mudhaka rakaoma rakasanganiswa harina kugumira pakuchengetedza mvura chete. Ichi chinowedzera chinowedzera chinopa mamwe mabhenefiti, akadai sekuvandudza kunamatira, kuderedzwa kutsemuka, uye kuwedzera kuramba mamiriro ekunze uye makemikari ejenti. Naizvozvo, inoonekwa sechinhu chakakosha mukugadzirwa kwemhando yepamusoro yakaoma yakasanganiswa dhaka.
Mukupedzisa, cellulose ether kuchengetwa kwemvura kunoita basa rakakosha mukuita kwevhu rakaoma rakasanganiswa dhaka. Inosimudzira kuwanikwa kwemvura ye simenti hydration, inovandudza dhaka risingachinji, kushanda, uye huwandu hwese hwezvinhu zvekuvaka. Iko kubatanidzwa kwe cellulose ether kunovimbisa hydration yakareba, inoderedza kubuda kwemvura, uye inobatsira mukudzora maitiro ekurapa. Nekuda kweizvozvo, yakaoma yakasanganiswa dhaka ine cellulose ether inopa kushanda kwepamusoro, kusimba, uye kusimba muzvirongwa zvekuvaka.
Nguva yekutumira: Nov-29-2023