Chikuva chegranite ipuratifomu yakagadzirwa negranite. Granite yakagadzirwa nedombo reigneous, idombo rakaoma, rakaita sekristaro. Pakutanga rakagadzirwa nefeldspar, quartz, uye granite, rinosanganiswa nechinhu chimwe chete kana kupfuura zvicherwa zvitema, zvese zvakarongwa nenzira yakafanana.
Granite inonyanya kuumbwa nequartz, feldspar, uye mica. Feldspar inoumba 40%-60%, uye quartz inoumba 20%-40%. Ruvara rwayo runoenderana nerudzi uye huwandu hwezvinhu izvi. Granite idombo rakaita sekristaro. Granite yemhando yepamusoro ine tsanga dzakatsetseka uye dzakafanana, chimiro chayo chakakora, huwandu hwayo hwequartz, uye kupenya kwefeldspar kwakajeka.
Granite ine silica yakawanda, zvichiita kuti ive neasidi yakawanda. Mamwe magranite ane zvinhu zvishoma zvine radioactive, saka mhando idzi dzegranite hadzifanirwe kushandiswa mumba. Granite ine chimiro chakakora, chakaoma, uye inodzivirira acids, alkalis, uye mamiriro ekunze, zvichiita kuti ive yakakodzera kushandiswa panze kwenguva refu. Granite ine hunhu hunotevera:
1. Granite ine chimiro chakakora, simba guru rekudzvanya, mvura shoma inonyudzwa, kuomarara kwepamusoro, kugadzikana kwakanaka kwemakemikari, uye kugara kwenguva refu, asi haidziviriri moto zvakanyanya.
2. Granite ine chimiro chegranular chine tsanga dzakatetepa, dzepakati, kana dzakakora, kana chimiro cheporphyritic. Tsanga dzayo dzakafanana uye dzakatetepa, dzine mipata midiki (maburi anowanzova 0.3% kusvika 0.7%), mvura shoma inonyudzwa (kazhinji 0.15% kusvika 0.46%), uye inodzivirira chando zvakanaka.
3. Granite yakaoma, ine kuomarara kweMohs kweinenge 6 uye density inotangira pa2.63 g/cm³ kusvika 2.75. G/(cm³) ine simba rekudzvanya re100-300 MPa, negranite yakacheneruka inosvika 300 MPa. Simba rayo rekuchinjika rinowanzova pakati pe10 ne30 MPa.
Chechina, granite ine goho rakakura, inokwanisa kushandiswa nenzira dzakasiyana-siyana dzekugadzirisa, uye ine hunhu hwakanaka hwekubatanidza slab. Uyezve, granite haikanganisike zviri nyore, zvichiita kuti ive yakakodzera kushongedza panze.
Kuchengetedza chikuva chemarble (marble slab) kunoda kuona kuti chikuva chemarble chinokwana here uye kuti chinodiwa here kugadzirisa, pamwe nekuona kana nzvimbo yebasa ine makomba. Kana chikuva chemarble chine makomba madiki pamusoro pacho, chinofanira kudzoserwa kufekitori kuti chigadzirwe. Kana kunyatsojeka kwangochinja, kugadziriswa kunofanira kuitwa panzvimbo yekushandisa. Mushure mekushandiswa kwenguva refu, kakawanda, chikuva chemarble chichazopera. Kana chikuva chemarble chakanyanya kutsetseka, kukanganisa kwekujeka kuchawedzera zvishoma nezvishoma, zvichikonzera kunyatsojeka kusina kururama. Muchiitiko ichi, chinoda kugadziriswa.
Matanho ekugadzirisa mapuratifomu emarble:
1. Tarisa kunyatsojeka kwepuratifomu yemabhura uye ona chikanganiso chayo chazvino.
2. Gadzira puratifomu yemarble uchishandisa zvinhu zvinogumbura uye maturusi ekukuya kuti uwane kukwirira kunodiwa.
3. Kukuya kwechipiri kwepuratifomu yemarble mushure mekukuya kwakakasharara kubvisa mavanga akadzika uye kuwana kuenzana kunodiwa.
4. Gadzira nzvimbo yekushanda yepuratifomu yemabhura kuti uwane kunyatsojeka kunodiwa.
5. Edza kunyatsoita zvakanaka kwepuratifomu yemarble mushure mekukwesha, uye zvakare mushure menguva yakati rebei.
Nguva yekutumira: Gunyana-01-2025