Kuramba kupararira kwemvura chinhu chakakosha pakuongorora kunaka kwemushonga unodzivirira kupararira kwemvura.Hydroxypropyl methyl celluloseipolymer inonyungudika mumvura, inozivikanwawo se resin inonyungudika mumvura kana polymer inonyungudika mumvura. Inowedzera kuenderana kwemusanganiswa nekuwedzera viscosity yemvura inosanganiswa. Imhando ye hydrophilic polymer material, iyo inogona kunyungudika mumvura yogadzira mhinduro kana mvura inopararira. Kuedza kunoratidza kuti kana huwandu hwe naphthalene system superplasticizer hukawedzera, kuwedzerwa kwe superplasticizer kunoderedza kuramba kwekupararira kwemortar itsva yesimende. Izvi zvinodaro nekuti naphthalene series high efficiency water reducing agent ndeye surface active agent, kana mvura ichidzikisa mvura yakawedzerwa kumortar, mvura inodzikisa mvura iri pamusoro pesimende particles pamusoro pemortar ine chaji imwechete, electric repulsion flocculation structure yemortar yesimende inoumbwa nekuparadzanisa, kuputira muchimiro chekubuda kwemvura, kuchaita kuti chikamu chesimende chirasikirwe. Panguva imwe chete, zvakaonekwa kuti nekuwedzera kwehuwandu hweHPMC, anti dispersion yemortar itsva yesimende iri nani uye iri nani.
Hunhu hwesimba rekongiri:
Kongiri yeHPMC iri pasi pemvura isingaparadzike yakashandiswa mukugadzira bridge foundation yemugwagwa mukuru, uye simba rekugadzira raive C25. Mushure mebvunzo yekutanga, chiyero chesimende i400kg, fume yakasanganiswa yesilica 25kg/m3,HPMCChiyero chakanakisa i0.6% yemuyero wesimende, chiyero chesimende yemvura i0.42, mwero wejecha i40%, naphthalene ine simba rekuderedza mvura inoburitsa 8% yemuyero wesimende, muenzaniso wekongiri mumhepo 28d, avhareji yesimba i42.6MPa, Avhareji yesimba rekongiri yakadururwa pasi pemvura ine hurefu hunodonha hwe60mm mumvura i36.4mpa kwemazuva makumi maviri nemasere, uye chiyero chesimba rekongiri yakaumbwa mumvura nekongiri yakaumbwa mumhepo i84.8%, zvichiratidza mhedzisiro yakakosha.
1. Kuwedzerwa kweHPMC kune mhedzisiro inooneka yekunonoka pamusanganiswa wedhaka. Nekuwedzera kwemuyero weHPMC, nguva yekugadzika kwedhaka inowedzera nguva nenguva. Pasi pemamiriro akafanana emuyero weHPMC, nguva yekugadzika kwedhaka repasi pemvura yakareba kupfuura yemhepo. Chinhu ichi chinobatsira pakupomba kongiri pasi pemvura.
2, yakasanganiswa nehydroxypropyl methyl cellulose yedhaka idzva resimende ine kubatana kwakanaka, inenge isina kubuda ropa.
3, kudiwa kwemvura yeHPMC uye kudiwa kwemvura yedhaka kwakatanga kwaderera ndokuzowedzera zvakanyanya.
4. Kushandiswa kwemuchina wekuderedza mvura kunovandudza dambudziko rekuwedzera kwekuda kwemvura yedhaka, asi rinofanira kudzorwa zvine mwero, zvikasadaro dzimwe nguva zvinoderedza kuramba kwedhaka idzva resimende richipararira pasi pemvura.
5. Hapana musiyano mudiki muchimiro pakati peHPMC mixed cement net slurry sampuli ne blank sampuli, uye hapana musiyano mudiki muchimiro uye kusimba pakati pemvura yakadururwa simende nemhepo yakadururwa simende net slurry sampuli. Iyo 28d underwear molding sampuli yakasununguka zvishoma. Chikonzero chikuru ndechekuti kuwedzerwa kweHPMC kunoderedza zvakanyanya kurasikirwa nekupararira kwesimende panguva yekudururwa kwemvura, asi kunoderedzawo mwero wekusimba kwesimende. Muchirongwa ichi, pasi pemamiriro ekuona kuti pasi pemvura hapaparadzike, huwandu hwekusanganisa hweHPMC hunoderedzwa zvakanyanya sezvinobvira.
6, wedzeraHPMCpasi pemvura haiparadzire kongiri yakasanganiswa, inodzora huwandu hwesimba rakanaka, chirongwa chekuedza chinoratidza kuti chiyero chesimba rekugadzira kongiri mumvura uye kugadzirwa mumhepo i84.8%, mhedzisiro yacho yakakosha.
Nguva yekutumira: Kubvumbi-25-2024