He maha ngā āhuatanga e pā ana ki te mahi a te pungarehu rere, ā, he tino uaua. Ko ngā āhuatanga matua e whakahaere ana ko: te hanganga matū (te nuinga ko te wāhanga karāhe); te hanganga karāhe; ngā hapa matū me te āhua o te pūwāhi whakahohe i roto i te karāhe (tae atu ki ērā i puta mai i te huri); te wai Te mahi a te reo tauhohenga matū; te tohatoha rahi matūriki o ngā matūriki. Ko te nui ake o ngā tukanga i runga i te raina whakaputa pungarehu rere, ko te pai ake o te pungarehu rere e puta ana, ā, ko te teitei ake o te utu o te pungarehu rere. Engari i te nuinga o te wā, ka taea te wehewehe ki ngā wāhanga e rua; ko tētahi he matū, e pā ana ki te maha me te hanganga o ngā matū hohe e whai wāhi ana ki roto, e whakatairanga ana hoki i ngā tauhohenga pozzolanic; ko tētahi he āhua, e pā ana ki te tukanga whakamakuku me te whakapakeketanga o te sima. Ko te hanganga kōhatu sima i hangaia i muri mai.
1. Ngā āhuatanga matū
Nā te mea ko te wāhanga karāhe silica-alumina te pūtake matua o te mahi a pungarehu rere, ko ngā āhuatanga e whakaiti ana i te maha o ngā tinana karāhe, pērā i te ngaronga nui i te mura me te maha o ngā āhua tioata, kāore i te pai mō te mahi. Hei tāpiri, i roto i te hanganga o te āhua karāhe, kāore ngā mahi a ngā huānga rerekē i te ōrite. Ko ngā waikura ngā wāhanga tino noa i roto i pungarehu rere, ā, koinei hoki ngā wāhanga matua o ngā hua waikura. Heoi, i raro i ngā āhuatanga pakeke me te pāmahana rerekē, he rerekē te nui me te hiranga o ngā waikura e whai wāhi ana ki ngā tauhohenga waikura. Hei tauira, ka taea e te rino te whakaiti i te ira rewa o te pungarehu, e whai hua ana ki te hanganga o ngā poroporo karāhe. Heoi, nā te mea he tino ngoikore te kaha o te waikura rino ki te whai wāhi ki ngā tauhohenga waikura, e whakaponohia whānuitia ana kāore te nui o te waikura rino e pai mō te mahi; ka taea e te iti o ngā waikura konganuku kawakore te whakatairanga i te waikura. Ka mahia te tauhohenga, engari i te wā e whakamahia ana te konganuku hohe, ko te nui o te pāhare pāporo me te konutai waikura i roto i te pungarehu rere ka whakatairanga i te tauhohenga o te konganuku kawakore, ka whakangaro i te pumau o te raima; he iti te waikura whanariki i roto i te pungarehu rere he pai ki te hanganga o te silicate konupūmā waikura me te hanganga o te konupūmā sulfoaluminate waikura (ettringite) e whai wāhi ana ki te kaha wawe, engari ko te nui rawa o te whakawhānui o te ettringite ka raru te pumau o te rōrahi, nō reira kaua te ihirangi o te waikura whanariki kia teitei ki te 3%.
2. Ngā āhuatanga ā-tinana
Ko ngā āhuatanga matua e pā ana ki te mahi a te pungarehu rere ko te āhua o ngā matūriki, te hanganga moroiti me ētahi atu āhuatanga ā-tinana. Mō ngā momo pungarehu rere rerekē, ko te iti o te wai e hiahiatia ana mō te ōritetanga paerewa, ko te teitei ake o te mahi; ko te iti o te ihirangi waro, ko te teitei ake o te mahi; ko te iti o te pai, ko te teitei ake o te mahi; mō te āhua o ngā matūriki, ko te karāhe porowhita i roto i te pungarehu rere. Ko te nui ake, ko te teitei ake o te mahi a te pungarehu rere. Mai i te āhuatanga hanganga moroiti E, ko te pungarehu rere he nui ake te mahi a te hanganga tetrahedral silicon-oxygen mekameka poto.
Ka taea e te horahanga mata motuhake o te pungarehu rere te whakaata i te hanganga matūriki me te hanganga o te pungarehu rere ki tētahi taumata. He nui ake te horahanga mata motuhake o ngā matūriki angiangi o te pungarehu rere; he hanganga matotoru te tinana karāhe whai konupūmā, ā, he iti te horahanga mata motuhake e rite ana; he maha ngā tinana karāhe pūwero. He nui ngā kōhao, he nui te horahanga mata motuhake e rite ana.
Wā tuku: Maehe-15-2022