Hamwe nicyerekezo cyerekeranye ninganda, harashimishwa ninyungu zicyuma. Ibihe byikirere, bizwi kandi nkicyuma cyikirere, bifite isura yimiterere karemano. Irema inyungu nuburyo bwuzuza inganda cyangwa inganda.

Kimwe nibindi bikoresho byose byubaka, ibyuma byikirere bifite ibyiza nibibi. Ni ngombwa cyane kumenya icyuma ikirere nikihe nacyo.

Icyuma nikihe?

Ikirere cyikirere, rimwe na rimwe cyitwa ibyuma byikirere, ni ubwoko bwibyuma birwanya ruswa. Bitewe nubushobozi bwayo bwo gukora igifuniko kirinda ingese, ibyuma byikirere nikintu gikunzwe cyane kubishushanyo mbonera byo hanze, gutunganya ubusitani, ibice byubatswe hamwe nibindi bikorwa byo hanze. Igice cyo gukingira, cyitwa verdigris, kiba mu mezi atandatu gusa nyuma yo guhura na ogisijeni nubushuhe.
Verdigris, itanga ibara ryijimye ryijimye, irinda ibyuma kutangirika kwinshi imvura, shelegi, igihu, urubura, urubura nibindi bihe byikirere. Muri make, ibyuma byangirika, hamwe n'ingese bikora igipfundikizo gikingira. Uru rupapuro rufite akamaro kanini mugihe rwemerewe guhagarara no kubaka mugihe.

Kugirango ubyare patina ikingira, ibyuma bigomba guhura namazi na ogisijeni. Iyo ibyuma bihuye nibintu, iki cyuma kirinda ingese bifata amezi make kugirango kibeho. Ipitingi ifite imbaraga kandi ikomeza kubyara mubihe bitandukanye.

Cor-icumi ni izina ryubucuruzi rifitwe na Steel yo muri Amerika isobanura ibyiza bibiri byingenzi bikurura ibyuma: kurwanya ruswa nimbaraga zikomeye. Yatunganijwe bwa mbere muri 1930 kugirango ifashe kubaka amagare yamakara ya gari ya moshi.

Amakara yamakara yagenze neza, kandi ibyuma bya Cor-Ten byabaye ibikoresho bizwi cyane byo guhitamo ibishushanyo mbonera byo hanze mu myaka ya za 1960.

Usibye kurwanya ruswa, ibyuma byikirere bikuraho amarangi cyangwa andi mashanyarazi.

Kuki ikirere kirinda ibyuma?


Patina ikozwe mubyuma byikirere ifite imbere ninyuma. Igice cyo hanze gihora gihindagurika kandi kigahinduka hamwe nibicuruzwa bishya bidafatika. Igice cyimbere kigizwe ahanini nuduce twuzuye twuzuye.

Amaherezo, urwego rwinyuma ntirukora cyane kandi imbere rwimbere rutangira kwigaragaza cyane. Nicyo gitanga ikirere cyikirere gisa nuburyo budasanzwe. Ibice byo hanze byikirere, kandi imbere imbere byabaye byinshi.


Igice cyimbere kigizwe ahanini na goethite itari icyiciro, niyo mpamvu ibyuma byikirere bifite imiterere yo gukingira. Kuki? Kuberako ibicuruzwa byangiritse bihinduka byinshi kuburyo amazi atagishobora kwangirika imiterere yimbere.

Iyo bimaze gutera imbere neza, igice cyinyuma cyicyuma cyikirere kigomba kuba cyoroshye kandi ukumva ari igikingirizo gikingira.