He papa kōhatu te papa kōhatu i hangaia ki te kōhatu kōhatu. He mea hanga mai i te toka mura, he kōhatu mārō, he tioata te kōhatu kōhatu. I te tīmatanga he mea hanga mai i te feldspar, te quartz, me te kōhatu kōhatu, ā, ka konatunatua ki tētahi, ki ētahi atu rānei o ngā kohuke pango, ā, kua whakaritea katoatia kia rite te āhua.
Ko te nuinga o te karāneti he mea hanga mai i te kuata, te feldspar, me te mika. Ko te feldspar he 40%-60%, ā, ko te kuata he 20%-40%. Ko tōna tae e whakawhirinaki ana ki te momo me te nui o ēnei wāhanga. He toka tioata katoa te karāneti. He pai, he ōrite ngā karāneti kounga teitei, he hanganga matotoru, he nui te ihirangi kuata, ā, he kanapa te feldspar.
He nui te nui o te silica i roto i te karāneti, ā, he waikawa tēnei toka. Kei roto i ētahi karāneti he iti noa ngā huānga irahiko, nō reira me karo i ēnei momo karāneti mō te whakamahinga o roto. He matotoru te hanganga o te karāneti, he mārō te kakano, ā, he ātete ki ngā waikawa, ki ngā kawakore, me te huarere, ā, he pai mō te whakamahinga o waho mō te wā roa. Ko ngā āhuatanga o te karāneti e whai ake nei:
1. He matotoru te hanganga o te karāneti, he kaha te pēhanga, he iti te mimiti wai, he pakari te mata, he pai te pumau matū, he kaha te mau, engari he iti te ātete ki te ahi.
2. He hanganga kirikiri te karāneti, he angiangi, he waenga, he matotoru rānei, he hanganga poropiriti rānei. He ōrite, he angiangi hoki ōna angiangi, he iti noa ngā āputa (ko te porosity te nuinga o te wā i waenga i te 0.3% ki te 0.7%), he iti te mimiti wai (ko te nuinga o te wā i waenga i te 0.15% ki te 0.46%), ā, he pai te ātete ki te huka.
3. He mārō te karāneti, ko te pakeketanga o te karāneti i raro i te ture Mohs he 6 pea, ā, ko te mātotorutanga kei waenganui i te 2.63 karamu/cm³ me te 2.75. Ko te kaha pēhi o te karāneti/(cm³) he 100-300 MPa, ā, ko te kaha pēhi o te karāneti pai rawa atu he neke atu i te 300 MPa. Ko tōna kaha piko i te nuinga o te wā kei waenganui i te 10 me te 30 MPa.
Tuawhā, he nui te hua o te karāhe, he pai ki ngā momo tikanga tukatuka, ā, he tino pai ngā āhuatanga honohono papa. Hei tāpiri, kāore te karāhe e ngawari ki te pakaru, he pai mō ngā mahi whakapaipai o waho.
Ko te pupuri i tētahi papa māpere (papa māpere) me whakatau i ngā āheinga me ngā whakaritenga tiaki o te papa māpere o nāianei, me te whakatau anō hoki mēnā he rua kei te mata mahi. Mena he iti ngā rua kei runga i te mata o tētahi papa māpere, me whakahoki ki te wheketere hei tukatuka. Mena kua rerekē noa te tika, me mahi ngā whakatikatika i te wāhi e whakamahia ana. I muri i te whakamahinga roa, auau, ka kore e tika te papa māpere. Mena he papatahi rawa te papa māpere, ka piki haere te hapa tika, ka hua ake he tika kore. I tēnei wā, me whakatika.
Ngā mahi tiaki mō ngā papa māpere:
1. Tirohia te tika o te papa māpere, ā, whakatauhia tōna hapa o nāianei.
2. Hurihia te papa māpere mā te whakamahi i ngā mea whakakoi me ngā taputapu huri kia eke ki te taumata e hiahiatia ana.
3. Ko te hurihanga haurua-pai tuarua o te papa māpere i muri i te hurihanga taratara hei tango i ngā karawarawa hōhonu, hei whakatutuki hoki i te taumata e hiahiatia ana.
4. Hurihia te mata mahi o te papa māpere kia eke ki te tika e hiahiatia ana.
5. Whakamātauria te tika o te papa māpere i muri i te whakakanapa, ā, whakamātauria anō i muri i tētahi wā.
Wā tuku: Hepetema-01-2025