Mtundu wa granite ndi kusankha kwa miyala ya zida zolondola zamafakitale.

M'madera omanga ndi mafakitale, granite imagwiritsidwa ntchito kwambiri chifukwa cha kuuma kwake, kachulukidwe, asidi ndi alkali kukana, ndi kukana nyengo. Zotsatirazi ndikuwunika mwatsatanetsatane kwa inu ngati mtundu wa granite umakhudza kachulukidwe kake komanso momwe mungasankhire granite yokhazikika m'munda wa zida zolondola zamakampani.
Ubale pakati pa mtundu ndi kachulukidwe ka granite
Granite imapangidwa makamaka ndi mchere monga quartz, feldspar ndi mica, ndipo mtundu wake umadalira mitundu ndi kuchuluka kwa zigawo zomwe zili nazo. Kuchokera pamalingaliro a kachulukidwe, pali kugwirizana kwina pakati pa mtundu ndi kachulukidwe, koma si chiyanjano chachindunji.

 

Kusiyana kwa kapangidwe ka mchere: Wopepuka granite, monga imvi-yoyera ndi yofiira thupi, nthawi zambiri imakhala ndi quartz ndi feldspar. Michere iwiriyi imakhala ndi kachulukidwe kakang'ono komanso kokhazikika. Kuchulukana kwa quartz kumayambira 2.6 mpaka 2.7g/cm³, pomwe feldspar imasiyana kuchokera 2.5 mpaka 2.8g/cm³ kutengera mtundu. Kuchuluka kwa mchere woterewu kumapangitsa kuti ma granite amtundu wowala azikwera kwambiri. Granite wakuda, monga wakuda ndi wobiriwira, nthawi zambiri amakhala ndi mchere wambiri wachitsulo ndi magnesium komanso mchere wakuda monga amphibole ndi biotite. Kuchulukana kwa amphibole ndi pafupifupi 3.0-3.4g /cm³, ndipo biotite ndi pafupifupi 2.7-3.1g /cm³. Komabe, pamene granite yakuda ili ndi zinthu zachitsulo zolemera kwambiri (monga chitsulo ndi manganese), kachulukidwe kake kumawonjezeka.

 

Kuchuluka kwa crystallization ndi chikoka chapangidwe: Mtundu nthawi zina ukhoza kuwonetsa kusiyana kwa crystallization ndi kapangidwe ka granite. Granite yokhala ndi kristalo wapamwamba kwambiri komanso wandiweyani imakhala ndi mtundu wofananira komanso wosasunthika, komanso kachulukidwe kake ndi kokwera kwambiri. Izi ndichifukwa choti ma mineral particles amakonzedwa bwino ndipo amakhala ndi kuchuluka kwakukulu pagawo lililonse. Granite yokhala ndi kristalo wosawoneka bwino komanso yotayirira imatha kukhala ndi mitundu ingapo komanso yosagwirizana, ma voids ambiri amkati, komanso kutsika kochepa.
Kusankhidwa kwa granite m'munda wa zida zolondola zamakampani
M'munda wa zida zolondola zamafakitale, zofunikira zokhazikika za granite ndizokwera kwambiri. Nthawi zambiri, granite yoyenera imasankhidwa poganizira mozama zinthu zingapo:

Mapangidwe a minerals ndi kapangidwe kake: Granite yokhala ndi zinthu zambiri komanso kugawa kofanana kwa quartz ndi feldspar ndizokonda. Mtundu uwu wa granite uli ndi dongosolo lokhazikika lamkati, lomwe lingathe kuchepetsa kusinthika komwe kumachitika chifukwa cha kusintha kwa kupsinjika kwa mkati ndikuonetsetsa kuti zidazo zikugwira ntchito kwa nthawi yaitali. Pakalipano, granite yokhala ndi crystallization yapamwamba, tinthu tating'onoting'ono tating'ono tating'ono tating'onoting'ono, komanso mawonekedwe owundana ndi chisankho chomwe amakonda. Pogwiritsa ntchito nthawi yayitali ndikugwiritsa ntchito mphamvu, imatha kusunga zolondola ndikuchepetsa kusinthika kwadongosolo lake pakulondola kwa zida.

Zizindikiro za thupi: Granite imayenera kukhala ndi madzi otsika kwambiri, omwe nthawi zambiri amakhala osachepera 0.5%, kuti ateteze mavuto monga kuwonjezeka kwa voliyumu ndi kuchepetsa mphamvu chifukwa cha kuyamwa kwa madzi, zomwe zingakhudze kulondola kwa zipangizo. Coefficient ya kukula kwa kutentha iyenera kukhala yochepa. Moyenera, iyenera kukhala yochepera 8×10⁻⁶/℃ kuti muchepetse kusintha kwa mawonekedwe obwera chifukwa cha kusintha kwa kutentha. Kuphatikiza apo, mphamvu yopondereza iyenera kukhala yayikulu, nthawi zambiri kuposa 150MPa, kuti iwonetsetse kuti imatha kupirira mphamvu zosiyanasiyana pakugwiritsa ntchito zida.
Mitundu yodziwika bwino: Jinan Green Granite, Indian Black, South African Black ndi miyala ina yakuda, yomwe nthawi zambiri imakhala yakuda, yowundana, imakhala ndi mphamvu yocheperako yakukula kwamafuta komanso kukana kuvala bwino, ndipo ndi yoyenera pazoyambira za zida zowunikira zowunikira zomwe zimakhala ndi zofunika kwambiri pakulondola komanso kukhazikika. Sesame woyera granite, ndi mtundu kuwala, yunifolomu mchere particles, ndi kuuma mkulu ndi mphamvu, chimagwiritsidwa ntchito zipangizo zamagetsi Chip kupanga zipangizo ndipo akhoza kukwaniritsa zofunika pa malo apamwamba mwatsatanetsatane ndi ntchito yaitali khola zida.

Pomaliza, ngakhale pali kulumikizana kwina pakati pa mtundu ndi kachulukidwe ka granite, posankha granite m'munda wa zida zolondola zamafakitale, ndikofunikira kuganizira mozama mbali zingapo monga kapangidwe ka mchere, kapangidwe kake, ndi mawonekedwe akuthupi kuti zitsimikizire kulondola kwapamwamba komanso kukhazikika kwa zida.