Semhando yezvinhu zvemadota emugomo, metakaolin inotsiva simende zvakanaka nekuda kwekushandiswa kwayo nesimba shoma uye kusvibiswa kwakaderera kwezvakatipoteredza panguva yekuumbwa kwe calcination, uye kugona kwayo kuvandudza zvimwe zvinhu zvePortland simende, zvakaita sekusimba uye kugara kwenguva refu, kana ikagadzirwa simende yakasanganiswa. Mumakore achangopfuura, nyanzvi dzakawanda dzakazvipira kudzidza nezvekushanda kwekaolin mumadota emugomo. Chinyorwa chino chinotsanangura tembiricha yakakwana ye calcination nenguva ye kaolin, zvinhu zvinokanganisa kushanda kwayo, uye nzira dzekuona hunhu uye kushanda kwe kaolin. Zvidzidzo zvekare zvakaratidza kuti tembiricha yakakwana ye calcination nenguva ye kaolin zvinopesvedzerwa nezvinhu zvakaita sekuumbwa kwemaminerari, crystallinity, uye kaolin, pakati pazvo crystallinity yechimiro che kaolin ine simba guru pakushanda kwayo mushure mekuumbwa kwe calcination. XRD, TG-DTA, IR nedzimwe nzira dzakashandiswa kuongorora hunhu hwe simbi isina kugadzirwa. Basa re kaolin rakatsanangurwa kuburikidza nenzira dzakadai seFrantini test, conductivity test, uye strength activity index. Nzira dzakarurama dzaive Frantini test uye strength activity index test.
Metakaolin (yakapfupikiswa seMK) isimbi yealuminium silicate (Al2O3 • 2SiO2, AS2) inoumbwa nekushaya mvura kwekaolin (Al2O3 • 2SiO2 • 2 H2O, AS2H2) patembiricha yakakodzera (600-900 ℃). Kaolin ndeyechimiro chesilicate chakaiswa layered, uye layers dzinobatanidzwa ne van der Waals bonds, ne OH - ions dzakasungirirwa zvakasimba mukati mayo. Kana kaolin yapiswa mumhepo, inochinja-chinja chimiro. Kana yapiswa kusvika pa600 ℃, chimiro chekaolin chakaiswa layered chinoparadzwa nekuda kwekushaya mvura, zvichiita chikamu chekuchinja chine crystallinity isina kunaka - metakaolin.
Nekuda kwekurongeka kwemamorekuru emetakaolin, inoratidza mamiriro ekupisa uye inoratidza hunhu hwesimende pasi pekukwezvwa kwakakodzera. Metakaolin ivhu remugodhi rinoputika rinoita basa guru rinogona kuita neCa (OH) 2 (CH) nemvura kugadzira zvinhu zvakaita sesimende. Nekushandisa chinhu ichi, kana chikashandiswa semusanganiswa wesimende, chinogona kuita neCH inogadzirwa panguva yekunyoroveswa kwesimende, izvo zvinogona kuvandudza mamwe maitiro esimende.
Metakaolin (MK) chigadzirwa chinoumbwa nekushaikwa kwemvura mumuviri wekaolin pakupisa kwakanyanya, uye tembiricha ye calcination inogona kukanganisa mashandiro emushonga wacho.
Kana tembiricha yakwira pamusoro pe950 ℃, chigadzirwa chinotanga kukora uye kushanduka kuita mullite necristobalite,
Icharasikirwa nekushanda kwayo kwemvura mumuviri.
Calcined kaolin chinhu chinoshandiswa zvakanyanya muindasitiri yekugadzira zvinhu zvepolymer zvakaita serabha, mapurasitiki, uye machira. Inogona kuderedza mutengo wezvigadzirwa izvi, kunyanya kuvandudza hunhu hwemuviri nemakemikari ezvinhu.