Ngaphansi kwezimo ezivamile, ubuningi be-granite abushintshi kakhulu ngokuhamba kwesikhathi, kodwa ngaphansi kwezimo ezithile ezithile, bungashintsha. Okulandelayo ukuhlaziywa okuvela ezicini ezahlukene:
Ngaphansi kwezimo ezijwayelekile, ubuningi buzinzile
I-Granite iyidwala eliyi-igneous elakhiwe ngamaminerali afana ne-feldspar, i-quartz kanye ne-mica, futhi inqubo yokwakheka kwayo inde futhi iyinkimbinkimbi. Ngemva kokwakheka kwayo, isakhiwo sayo sangaphakathi samaminerali kanye nokwakheka kwamakhemikhali kuzinzile. I-Granite inesakhiwo esiminyene esinezinhlayiya ezifanayo nezincane. Ubuningi bayo ngokuvamile bungu-0.3% - 0.7%, futhi izinga layo lokumunca amanzi ngokuvamile liphakathi kuka-0.15% no-0.46%. Uma nje ingekho emiphumeleni enamandla yomzimba kanye namakhemikhali avela ngaphandle, ukuhlelwa kwamaminerali ngaphakathi ngeke kushintshe kalula, futhi isisindo ngeyunithi ngayinye sizohlala sinjalo, kanti ubuningi buzinza ngokwemvelo. Isibonelo, izingxenye ze-granite ezisetshenziswa kwezinye izakhiwo zasendulo ziye zahlala amakhulu noma ngisho nezinkulungwane zeminyaka. Esimweni esilondolozwe kahle, ubuningi bazo abuzange bushintshe noma yiziphi izinguquko ezibonakalayo.
Izimo ezikhethekile zingaholela ekushintsheni kobuningi
Umphumela womzimba: Uma i-granite ibhekene namandla angaphandle abalulekile njengokucindezelwa kanye nokuthinteka isikhathi eside, ingabangela izinguquko ezincane esakhiweni sayo sangaphakathi. Isibonelo, ezindaweni ezinokuzamazama komhlaba okuvamile, i-granite ibhekene nokucindezeleka okunamandla okubangelwa ukunyakaza kwe-crustal. Izikhala phakathi kwezinhlayiya zamaminerali zangaphakathi zingacindezelwa futhi zincishiswe, futhi ama-pores amancane akhona ekuqaleni angase avalwe kancane, okuholela ekwandeni kwesisindo sezinto ngeyunithi ngayinye kanye nokwenyuka kobuningi. Kodwa-ke, izinguquko ezinjalo ngokuvamile zincane kakhulu futhi zidinga amandla angaphandle anamandla kakhulu futhi aqhubekayo ukuze kwenzeke.
Ukusabela kwamakhemikhali: Uma i-granite ivezwa endaweni ekhethekile yamakhemikhali isikhathi eside, ubuningi bayo bungashintsha. Isibonelo, uma i-granite ivezwa ezintweni ezine-acidic noma i-alkaline isikhathi eside, ezinye zezingxenye zayo zamaminerali zingase zenze ukusabela kwamakhemikhali ngala makhemikhali. Amaminerali afana ne-feldspar ne-mica angase aguge futhi ancibilike ezindaweni ezine-acidic, okuholela ekulahlekelweni kwezinye izinto. Lokhu kuphumela ezimbotsheni eziningi ngaphakathi kwe-granite, ukwehla kobunzima obuphelele, ngaleyo ndlela ukwehla kobuningi. Ngaphezu kwalokho, lapho i-granite ivezwa endaweni emanzi enenani elikhulu le-carbon dioxide isikhathi eside, ingase ibhekane nokusabela kwe-carbonation, okuzophinde kuthinte isakhiwo sayo sangaphakathi kanye nokwakheka kwayo, futhi ngaleyo ndlela kuthonye ubuningi bayo.
Ukuwa Kwezulu: Ngaphansi kwemiphumela yesikhathi eside yemvelo efana nomoya, ukuchayeka elangeni kanye nemvula, ubuso be-granite buzoqhekeka kancane kancane futhi bubole. Nakuba ukuwa kwezulu kuthinta kakhulu ungqimba olungaphezulu lwe-granite, njengoba isikhathi sihamba futhi ukuwa kwezulu kujula, izinto ezisetshenziswa yi-granite zizolahleka. Ngaphansi kwesimo sokuthi ivolumu ayishintshi noma ishintsha kancane, isisindo sizoncipha futhi ukuminyana kuzoncipha. Kodwa-ke, ukuwa kwezulu kuyinqubo ehamba kancane kakhulu futhi kungathatha amakhulu noma ngisho nezinkulungwane zeminyaka ukuthi ukuminyana kushintshe kakhulu.
Sekukonke, ngaphansi kwezimo ezijwayelekile zemvelo nezokusetshenziswa, ubuningi be-granite bungabhekwa njengobuzinzile futhi obungashintshi. Kodwa-ke, ngaphansi kwethonya lezindawo ezikhethekile zomzimba, amakhemikhali kanye nemvelo, ubuningi bayo bungashintsha ngezinga elithile ngokuhamba kwesikhathi.
Isikhathi sokuthunyelwe: Meyi-19-2025