ngā purongo

E ai ki ngā tohunga, he rauemi matua te rino mō ngā kaupapa hanga whare mō ngā tekau tau, e whakarato ana i te kaha me te manawanui nui. Heoi, i te piki haere tonu o ngā utu rino me te piki haere o ngā āwangawanga mō ngā tukunga waro, kei te piki haere te hiahia mō ngā otinga rerekē.
Pāreti paratahe huarahi kē atu e whai hua ana, ā, ka taea te whakaoti i ngā raruraru e rua. Nā ōna āhuatanga tino pai me tōna atawhai ki te taiao, ka taea te kī he huarahi kē atu tēnei hei whakakapi i te maitai tuku iho. I ahu mai i te toka puia, he kaha whakamiharo te kaha o ngā pae maitai basalt, ā, he pai mō te whakamahi i roto i ngā momo mahi hanga.
He huarahi kē atu kua whakamātauhia te rebar basalt hei whakakapi i te maitai tuku iho, i te muka karāhe rānei mō te raima, ā, kei te piki haere te kaha o te hangarau hou i te UK. Kei te piki haere te whakamahinga o tēnei otinga auaha i ngā kaupapa rongonui pērā i te High Speed ​​​​2 (HS2) me te huarahi tere M42 i roto i ngā kaupapa hanga i te mea kei te ahu whakamua ngā mahi tango waro.
– Ko te tukanga whakaputa he kohikohipātarati puia, ka kuruhia kia ririki, ka puritia ki ngā pāmahana tae atu ki te 1400°C. Ka hurihia e ngā silicates i roto i te basalt hei wai ka taea te totoro mā te kaha ā-papa mā roto i ngā pereti motuhake, ka hangaia he aho roa ka tae ki ngā mano mita te roa. Kātahi ka takaihia ēnei miro ki ngā pōro, ka whakaritea hei hanga whakakaha.
Ka whakamahia te pultrusion hei huri i te waea basalt hei tokotoko rino. Ko te tukanga he tango i ngā miro ka tōia ki roto i te kapia epoxy wai. Ka whakamahanahia te kapia, he polymer, kia wai, kātahi ka tōia ngā miro ki roto. Ka tere te whakapakeke o te hanganga katoa, ka huri hei tokotoko kua oti i roto i ngā meneti ruarua.