Anti-dispersion indekisi yakakosha yehunyanzvi yekuyera kunaka kweanopesana nekupararira mumiririri.Hydroxypropyl methylcellulose musanganiswa wepolymer unonyungudika nemvura, unozivikanwawo seresin inonyungudika nemvura kana polima inonyungudika nemvura.Inowedzera kuwirirana kwemusanganiswa nekuwedzera viscosity yemvura inosanganiswa.Iyo ndeye hydrophilic polymer zvinhu.Inogona kunyungudutswa mumvura kuita mhinduro kana kupararira.Ongororo dzinoratidza kuti kana huwandu hwenaphthalene-based high-efficiency superplasticizer huchiwedzera, kuwedzerwa kwe superplasticizer kunoderedza kupararira kwekupokana kweichangobva kusanganiswa simende dhaka.Izvi zvinodaro nekuti iyo naphthalene-yakavakirwa yakakwirira-inoshanda yekuderedza mvura ndeye surfactant.Kana iyo inodzikisira mvura yawedzerwa kune dhaka, iyo inoderedza mvura inonangana pamusoro pemasimiti esimende kuita kuti pamusoro pezvikamu zvesimende zvive nechaji yakafanana.Iyi kuputika kwemagetsi kunoita kuti simiti iite Simende chimiro che flocculation chesimenti chinoputika, uye mvura yakaputirwa muhutano inosunungurwa, iyo ichaita kuti kurasikirwa kwechikamu chesimende.Panguva imwecheteyo, zvinowanikwa kuti nekuwedzera kweHPMC yemukati, kupararira kuramba kwedhaka resimende nyowani kuri kuita nani uye zvirinani.
01. Kuwedzerwa kweHPMC kune pachena kunonoka kunokonzera pamusanganiswa wedhaka.Nekuwedzera kweHPMC yemukati, nguva yekumisikidza yedhaka inowedzerwa zvakatevedzana.Pasi pezvakafanana zveHPMC, dhaka rakaumbwa pasi pemvura rinokurumidza kupfuura iro riri mumhepo Molding inotora nguva yakareba kuti igadzirwe.Izvi zvinobatsira pakupomba kongiri pasi pemvura.
02. Kuwedzerwa kwekudzikisa mvura kunovandudza dambudziko rekuwedzera kwemvura kudiwa kwedhaka, asi chiyero chayo chinofanira kudzorwa zvine musoro, kana zvisina kudaro kupararira kwepasi pemvura kwemvura yakasanganiswa sement mortar dzimwe nguva kunoderedzwa.
03. Pane mutsauko mudiki muchimiro pakati pesimende paste specimen yakasanganiswa neHPMC uye isina chinhu specimen, uye pane mutsauko mudiki muchimiro uye density yesamende paste specimen inodururwa mumvura uye mumhepo.Muenzaniso wakaumbwa pasi pemvura kwemazuva makumi maviri nemasere wakatsvuka zvishoma.Chikonzero chikuru ndechekuti kuwedzerwa kweHPMC kunoderedza zvakanyanya kurasikirwa uye kupararira kwesementi kana ichidira mumvura, asi zvakare kunoderedza kuumbwa kwedombo resimende.Muchirongwa ichi, pasi pemamiriro ekuona mhedzisiro yekusapararira pasi pemvura, chiyero cheHPMC chinofanira kudzikiswa zvakanyanya sezvinobvira.
Iyo HPMC yepasi pemvura isingaparadzike kongiri musanganiswa inoshandiswa mubhiriji hwaro engineering yenzira yekutaura, uye dhizaini yesimba redhizaini iC25.Zvinoenderana nebvunzo yekutanga, huwandu hwesimende i400kg, iyo yakasanganiswa silica fume i25kg/m3, iyo yakakwana huwandu hweHPMC i0.6% yesamende, mvura-simende ratio 0.42, jecha chiyero 40%. uye kubudiswa kwe naphthalene-based high-efficiency water reducer is Huwandu hwesimende ndeye 8%, sampuli yekrete iri mumhepo kwemazuva makumi maviri nemasere, simba repakati ndeye 42.6MPa, kongiri yepasi pemvura ine kudonha kureba kwe60mm kwemazuva makumi maviri nemasere. , chiyero chesimba ndeye 36.4MPa, chiyero chesimba chemvura yakagadzirwa nekrete uye mhepo yakagadzirwa nemhepo 84.8%, mhedzisiro yacho inonyanya kukosha.
Nguva yekutumira: Kubvumbi-24-2023