Dispersion resistance ndiyo yakakosha tekinoroji index kuyera kunaka kwe anti - dispersant.Hydroxypropyl methyl cellulosemusanganiswa wepolymer unonyungudika nemvura, unozivikanwawo seresin inonyungudika nemvura kana polima inonyungudika nemvura. Inowedzera kuwirirana kwemusanganiswa nekuwedzera viscosity yemvura inosanganiswa. Iyo imhando ye hydrophilic polymer zvinhu, inogona kunyungudika mumvura uye kugadzira mhinduro kana inoparara mvura. Ongororo dzinoratidza kuti kana huwandu hwenaphthalene system superplasticizer huchiwedzera, kuwedzerwa kwe superplasticizer kunoderedza kupararira kuramba kwesamende nyowani. Izvi zvinodaro nekuti iyo naphthalene yakateedzana yakakwira inoshanda yekudzikisa mvura mumiriri ndeye yepamusoro inoshanda mumiriri, kana mvura inodzikisa mumiriri yakawedzerwa kune dhaka, iyo inodzikisa mvura musimende chidimbu chepamusoro chakatarisana pamusoro pemasimende masimende nechaji yakafanana, yemagetsi repulsion flocculation chimiro chesimende masisitimu akaumbwa nekuparadzana kwechikamu chemvura, chinokonzera kurasikirwa kwemvura. Panguva imwecheteyo, zvinowanikwa kuti nekuwedzera kweHPMC yemukati, iyo anti dispersion yeatsva simende dhaka iri nani uye nani.
Simba maitiro ekongiri:
HPMC yepasi pemvura isiri-dispersive kongiri admixture yakaiswa mubhiriji hwaro engineering yenzira yekukurumidza, uye giredhi resimba rekugadzira raive C25. Mushure mekuyedzwa kwekutanga, simende dosage i400kg, yakasanganiswa silica fume 25kg/m3,HPMCoptimum dosage is 0.6% ye simende dosage, mvura simende ratio i 0.42, jecha chiyero 40%, naphthalene yakakwirira inoshanda yekudzikisa mvura inoderedza goho ndeye 8% yesimende dosage, iyo kongiri yemuenzaniso mumhepo 28d, avhareji simba i42.6MPa, Avhareji yehurefu hwekudururwa kwemvura pasi pemvura 60mm inodonha pasi pemvura. 36.4mpa kwemazuva makumi maviri nemasere, uye chiyero chesimba chekongiri yakaumbwa mumvura uye kongiri yakaumbwa mumhepo ndeye 84.8%, inoratidza chiitiko chakakosha.
1. Kuwedzerwa kweHPMC kune pachena kunonoka kukanganisa pamusanganiswa wedhaka. Nekuwedzera kweHPMC dosage, nguva yekumisikidza yedhaka inowedzerwa zvakatevedzana. Pasi pemamiriro akafanana eHPMC dosage, nguva yekumisikidza yedhaka repasi pemvura yakareba kupfuura iyo yemhepo. Izvi zvinobatsira pakupomba kongiri pasi pemvura.
2, yakasanganiswa nehydroxypropyl methyl cellulose yedhaka nyowani simende ine kubatana kwakanaka, kunenge kusina kubuda ropa.
3, HPMC dosage uye kudiwa kwemvura yedhaka kwakatanga kuderera ndokuzowedzera zvakanyanya.
4. Kubatanidzwa kwemvura inoderedza kunonatsiridza dambudziko rekuwedzera kudiwa kwemvura kwedhaka, asi inofanira kudzorwa zvine musoro, kana zvisina kudaro dzimwe nguva inoderedza kupararira kwemvura yepasi pemvura yakachena sement mortar.
5. Pane musiyano mudiki muchimiro pakati peHPMC yakasanganiswa simende net slurry specimens uye isina chinhu sampuli, uye pane mutsauko mudiki muchimiro uye compactness pakati pemvura yakadururwa simende uye mhepo yakadururwa simende net net slurry specimens. Iyo 28d yepasi pemvura yekuumba muenzaniso yakasununguka zvishoma. Chikonzero chikuru ndechekuti kuwedzerwa kweHPMC kunoderedza zvakanyanya kurasikirwa uye kupararira kwesementi panguva yekudururwa kwemvura, asi zvakare kunoderedza dhigirii resimende compaction. Muchirongwa ichi, pasi pemamiriro ekuona kuti pasi pemvura isiri-kupararira mhedzisiro, huwandu hwekusanganiswa hweHPMC hunoderedzwa kusvika pazvinobvira.
6, wedzeraHPMCpasi pemvura haaparadzi kongiri admixture, kudzora huwandu hwesimba rakanaka, chirongwa chekutyaira chinoratidza kuti chiyero chesimba chekugadzira kongiri mumvura uye kugadzira mumhepo ndeye 84,8%, mhedzisiro yacho inonyanya kukosha.
Nguva yekutumira: Kubvumbi-25-2024