Hydroxypropyl methylcellulose ipolymer inonyungudika mumvura, inozivikanwawo se resin inonyungudika mumvura kana polymer inonyungudika mumvura. Inokora musanganiswa nekuwedzera viscosity yemvura inosanganiswa. Ipolymer inopinda mumvura. Inogona kunyungudika mumvura kuti igadzire mhinduro kana kupararira. Ongororo dzinoratidza kuti kana huwandu hwe naphthalene-based superplasticizer hukawedzera, kuiswa kwe superplasticizer kunoderedza kuramba kwekupararira kwemortar yecement yakasanganiswa. Izvi zvinodaro nekuti naphthalene superplasticizer i surfactant. Kana mvura inodzikisa mvura yawedzerwa kumortar, mvura inodzikisa mvura inorongwa pamusoro pemortar yecement, kuitira kuti pamusoro pemortar yecement pave nechaji imwe chete. Kudzoreredza uku kwemagetsi kunoputsa chimiro che flocculation chinoumbwa nemortar yecement, uye mvura yakaputirwa mumortar inoburitswa, zvichikonzera kurasikirwa kwechikamu chesimende. Panguva imwe chete, zvakaonekwa kuti nekuwedzera kwehuwandu hweHPMC, kuramba kwekupararira kwemortar yecement itsva kwakawedzera kuva nani.
Simba rekongiri:
Kongiri isinganyunguduke yeHPMC iri pasi pemvura inoshandiswa mukugadzira mabhiriji emugwagwa mukuru, uye simba rekugadzira iC25. Zvichienderana nekuyedza kwekutanga, huwandu hwesimende i400kg, huwandu hwe microsilica i25kg/m3, huwandu hwakakwana hweHPMC i0.6% yehuwandu hwesimende, chiyero chemvura nesimende i0.42, chiyero chejecha i40%, uye kubuda kwe naphthyl superplasticizer i8% yehuwandu hwesimende. , Zviyero zvekongiri zviri mumhepo kwemazuva makumi maviri nemasere zvine avhareji yesimba re42.6MPa, uye kongiri inodururwa pasi pemvura kwemazuva makumi maviri nemasere ine donhwe remvura re60mm ine avhareji yesimba re36.4 MPa.
1. Kuwedzerwa kweHPMC kune mhedzisiro inooneka yekunonoka pamusanganiswa wedhaka. Nekuwedzera kwehuwandu hweHPMC, nguva yekugadzika kwedhaka inowedzera zvishoma nezvishoma. Pasi pehuwandu hwakafanana hweHPMC, dhaka rakaumbwa pasi pemvura riri nani pane dhaka rakaumbwa mumhepo. Nguva yekusimba yekuumba yakareba. Chinhu ichi chinobatsira kupomba kongiri pasi pemvura.
2. Dura resimende idzva rakasanganiswa nehydroxypropyl methylcellulose rine simba rakanaka rekubatanidza uye haribvi ropa zvakanyanya.
3. Kuwanda kweHPMC uye kudiwa kwemvura mudhaka zvakatanga zvadzikira uye zvakazowedzera zvakanyanya.
4. Kushandiswa kwechinhu chinoderedza mvura kunovandudza dambudziko rekuwedzera kwekuda kwemvura yedhaka, asi rinofanira kudzorwa zvine musoro, zvikasadaro dzimwe nguva zvinoderedza kuramba kwemvura pasi pemvura yedhaka idzva resimende rakasanganiswa.
5. Hapana musiyano mudiki muchimiro chemuenzaniso we simende yakasanganiswa neHPMC nemuenzaniso usina chinhu, uye hapana musiyano mudiki muchimiro uye huwandu hwemuenzaniso we simende yakasanganiswa mumvura nemhepo. Muenzaniso wakagadzirwa mushure memazuva makumi maviri nemasere pasi pemvura wakasununguka zvishoma. Chikonzero chikuru ndechekuti kuwedzerwa kweHPMC kunoderedza zvakanyanya kurasikirwa nekupararira kwesimende panguva yekudurura mvura, asiwo kunoderedza kuoma kwedombo resimende. Muchirongwa ichi, huwandu hweHPMC hunofanira kuderedzwa zvakanyanya sezvinobvira uku uchivimbisa mhedzisiro yekusapararira pasi pemvura.
6. Kusanganiswa kwekongiri isinganyunguduke yeHPMC pasi pemvura, kudzora huwandu hwayo kunobatsira pakuvandudza simba. Mapurojekiti ekuedza akaratidza kuti kongiri inoumbwa mumvura ine simba re84.8% yeinoumbwa mumhepo, uye mhedzisiro yacho yakanyanya kukosha.
Nguva yekutumira: Chikumi-16-2023