Iyo inozvimisa-leveling dhaka inogona kuvimba nehuremu hwayo kugadzira hwaro hwakati sandara, hwakatsetseka uye hwakasimba pane substrate yekuisa kana kubatanidza zvimwe zvinhu. Panguva imwecheteyo, inogona kuita yakakura uye inobudirira kuvaka. Naizvozvo, kunyungudika kwemvura kwakakosha zvakanyanya kwedhaka rekuzvimiririra Mukuwedzera, inofanirwa kunge iine kumwe kuchengetedza kwemvura uye kusimba kwechisungo, pasina kupatsanurwa kwemvura chiitiko, uye kuve nehunhu hwekudzivirira kupisa uye kuderera kwekushisa kukwira.
Kazhinji, dhaka rekuzvimisa rinoda mvura yakanaka, asi kunyunguduka kwesamende chaiyo paste kunowanzova 10-12cm chete; pakaticellulose ethers, hydroxypropyl methylcellulose (HPMC) inonyanya kuwedzera yedhaka yakagadzirira-yakasanganiswa, kunyange zvazvo mari yekuwedzera yakanyanya kuderera, inogona kuvandudza zvakanyanya kushanda kwevhu, inogona kuvandudza kuwirirana, kushanda kwekushanda, kushanda kwekubatanidza uye kuchengetedza mvura kwemvura. Inoita basa rinokosha zvikuru mumunda wedhaka rakagadzirwa rakagadzirwa.
1. Kufamba
Hydroxypropyl methylcellulose (HPMC)ine pesvedzero yakakosha pakuchengetedza mvura, kuenderana uye kuita kwekuvaka kweiyo self-leveling dhaka. Kunyanya sedhaka rekuzvimisa-leveling, fluidity chimwe chezviratidzo zvikuru zvekuongorora kuzvidzora kuita. Pasi pemamiriro ekuona kuumbwa kwakajairika kwedhaka, iyo fluidity yedhaka inogona kugadziriswa nekushandura huwandu hweHPMC. Nekudaro, kana muyero wakanyanya kukwirira, iyo fluidity yedhaka ichaderedzwa, saka dosage yeHPMC inofanirwa kudzorwa mukati meiyo inonzwisisika renji.
2. Kuchengeta mvura
Kuchengetedzwa kwemvura kwedhaka indekisi yakakosha yekuyera kugadzikana kwezvikamu zvemukati zvezvichangobva kusanganiswa sement mortar. Kuti uite zvizere maitiro e hydration eiyo gel zvinhu, huwandu hunonzwisisika hweHPMC hunogona kuchengetedza hunyoro mudhaka kwenguva yakareba. Kazhinji kutaura, mwero wekuchengetedza mvura weslurry unowedzera nekuwedzera kweHPMC yemukati. Basa rekuchengetedza mvura reHPMC rinogona kudzivirira iyo substrate kuti isatore mvura yakawandisa nekukurumidza, uye kutadzisa kubuda kwemvura, kuitira kuti ive nechokwadi chekuti slurry nharaunda inopa mvura yakakwana yesamende hydration. Mukuwedzera, iyo viscosity yehydroxypropyl methylcellulose zvakare ine simba guru pakuchengetedza mvura kwedhaka. Iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Kazhinji, zvigadzirwa zvine viscosity inosvika 400mpa.s zvinonyanya kushandiswa kuzvimisa-leveling dhaka, izvo zvinogona kuvandudza mashandiro edhaka uye kuwedzera kusimba kwedhaka.
3. Kuisa nguva
HPMC ine kumwe kudzoreredza mhedzisiro padhaka. Nekuwedzera kweyero, nguva yekugadzika yedhaka inowedzera. Kudzoreredza mhedzisiro yeHPMC pane simende paste zvakanyanya zvinoenderana nehuwandu hwekutsiviwa kwemapoka ealkyl, uye ine hukama hushoma nehuremu hwayo hwemamorekuru. Iyo idiki dhigirii yealkyl inotsiva, iyo yakakura iyo hydroxyl yemukati, uye zvakanyanya kuoneka kudzoreredza maitiro. Uye iyo yakakwira iyo HPMC zvirimo, zvinonyanya kuoneka mhedzisiro yeakaomesesa firimu layer pane yekutanga hydration retardation ye simenti, saka iyo yekudzosa mhedzisiro inova pachena.
4. Flexural simba uye kumanikidza simba
Kazhinji, simba nderimwe reakakosha ekuongorora indexes yekurapa mhedzisiro yesimende-yakavakirwa simende zvinhu pamusanganiswa. Iyo yekumanikidza simba uye flexural simba redhaka richadzikira nekuwedzera kweHPMC yemukati.
5. Bond simba
HPMC ine pesvedzero huru pakubatana kwekuita kwedhaka.HPMCinoumba firimu repolymer rine chisimbiso pakati pemvura yechikamu system uye simenti hydration particles, iyo inosimudzira mvura yakawanda mufirimu yepolymer kunze kwemasimende, iyo inobatsira kune yakakwana hydration ye simenti, nokudaro inovandudza slurry quality. Chisungo chakaoma simba. Panguva imwecheteyo, kuwedzera huwandu hwakakodzera hweHPMC kunowedzera purasitiki uye kuchinjika kwedhaka, kunoderedza kuomarara kwenzvimbo yekuchinja pakati pedhaka uye substrate interface, uye inoderedza kugona kutsvedza pakati penzvimbo. Kusvika kumwero wakati, iyo yekubatanidza mhedzisiro pakati pedhaka uye substrate inowedzerwa. Uye zvakare, nekuda kwekuvapo kweHPMC mune simende paste, yakakosha interface yekushandura zone uye interface layer inoumbwa pakati pemateki evhu uye hydration chigadzirwa. Iyi interface layer inoita kuti interface yekushandura zone iwedzere kuchinjika uye kushomeka. Naizvozvo, iyo Mortar ine simba rekubatanidza rakasimba.
Nguva yekutumira: Kubvumbi-25-2024