1) Ko te whakapai ake i te kaha o te paru sima me te moata tētahi o ngā tohu o te mahi pai o te raima. Ko tētahi o ngā kaupapa matua o te tāpiri i te metakaolin ko te whakapai ake i te kaha o te moata sima me te raima.

E ai ki a Poon me ētahi atu, he rite tōna kaha i te 28d me te 90d ki te sima metakaolin, engari he iti iho tōna kaha tōmua i te sima paerewa. E whakaatu ana ngā tātaritanga he hononga pea tēnei ki te nui o te kohikohinga o te paura silicon i whakamahia me te koretake o te mararatanga i roto i te paru sima.

(2) I rangahau a Li Keliang et al. (2005) i ngā pānga o te pāmahana whakapūkara, te wā whakapūkara, me te ihirangi SiO2 me te A12O3 i roto i te kaolin ki te mahi a te metakaolin hei whakapai ake i te kaha o te raima sima. I whakaritea ngā poraka raima me te oneone kaha teitei mā te whakamahi i te metakaolin. E whakaatu ana ngā hua ina 15% te ihirangi o te metakaolin, ā, ko te ōwehenga sima wai he 0.4, ko te kaha pēhi i te 28 rā he 71.9 MPa. Ina 10% te ihirangi o te metakaolin, ā, ko te ōwehenga sima wai he 0.375, ko te kaha pēhi i te 28 rā he 73.9 MPa. Heoi anō, ina 10% te ihirangi o te metakaolin, ka eke tōna taupū mahi ki te 114, arā, he 11.8% teitei ake i te nui o te paura silicon. Nō reira, e whakaponohia ana ka taea te whakamahi i te metakaolin hei whakarite i te raima kaha teitei.

I rangahauhia te whanaungatanga ahotea kume-taumahatanga tuaka o te raima me te 0, 0.5%, 10%, me te 15% o te ihirangi metakaolin. I kitea i te pikinga ake o te ihirangi metakaolin, ka tino piki ake te taumahatanga tihi o te kaha kume tuaka o te raima, ā, kāore i rerekē te modulus tensile elastic. Heoi, ka tino piki ake te kaha pēhi o te raima, ā, ka heke te ōwehenga kaha pēhi. Ko te kaha kume me te kaha pēhi o te raima me te ihirangi kaolin 15% he 128% me te 184% o te raima tohutoro, ia.
I te rangahau i te pānga whakapakari o te paura tino pai o te metakaolin ki te raima, i kitea i raro i te rere kotahi, ka piki ake te kaha pēhi me te kaha piko o te moata kei roto te 10% metakaolin mā te 6% ki te 8% i muri i ngā rā 28. Ko te whanaketanga kaha tōmua o te raima i konatunatua ki te metakaolin he tere ake i tērā o te raima paerewa. Ki te whakatauritea ki te raima paerewa, ko te raima kei roto te 15% metakaolin he pikinga 84% i roto i te kaha pēhi tuaka 3D me te pikinga 80% i roto i te kaha pēhi tuaka 28d, ko te modulus rapa pumau he pikinga 9% i roto i te 3D me te pikinga 8% i roto i te 28d.

I rangahauhia te awe o te ōwehenga ranunga o te oneone metakaolin me te para ki te kaha me te roa o te raima. E whakaatu ana ngā hua mā te tāpiri i te metakaolin ki te para raima ka whakapai ake i te kaha me te roa o te raima, ā, ko te ōwehenga tino pai o te para ki te sima he 3:7, ka hua ake he kaha raima tino pai. He paku teitei ake te rerekētanga o te āwhata o te raima hiato i te raima para kotahi nā te pānga o te pungarehu puia o te metakaolin. He teitei ake tōna kaha kume wehewehe i te raima paerewa.

I tirotirohia te āheinga mahi, te kaha pēhi, me te pakari o te raima mā te whakamahi i te metakaolin, te pungarehu rere, me te para hei whakakapi mō te sima, me te whakaranu motuhake i te metakaolin ki te pungarehu rere me te para hei whakarite i te raima. E whakaatu ana ngā hua ina whakakapia te metakaolin i te 5% ki te 25% o te sima ki ngā rahinga ōrite, ka pai ake te kaha pēhi o te raima i ngā reanga katoa; Ina whakamahia te metakaolin hei whakakapi i te sima mā te 20% i ngā rahinga ōrite, ko te kaha pēhi i ia reanga he mea tino pai, ā, ko tōna kaha i te 3d, 7d, me te 28d he 26.0%, 14.3%, me te 8.9% teitei ake i te raima kāore he metakaolin i tāpirihia. E tohu ana tēnei mō te sima Portland Momo II, mā te tāpiri i te metakaolin ka taea te whakapai ake i te kaha o te raima kua whakaritea.

Mā te whakamahi i te para maitai, te metakaolin, me ētahi atu rauemi hei rauemi mata matua hei whakarite i te sima geopolymer hei utu mō te sima Portland tuku iho, kia tutuki ai te whāinga o te tiaki pūngao, te whakaiti i te whakapaunga, me te huri i te para hei taonga. E whakaatu ana ngā hua ina 20% te nui o te maitai me te pungarehu rere, ka tino teitei te kaha o te poraka whakamātautau i te 28 rā (95.5MPa). I te pikinga ake o te nui o te para maitai i tāpirihia, ka taea hoki e ia te whai wāhi ki te whakaiti i te whakahekenga o te sima geopolymer.

Mā te whakamahi i te ara hangarau o te "sima Portland+ranunga kohuke hohe+kaihoko whakaiti wai tino whai hua", te hangarau raima wai aukume, me ngā tukanga whakarite tikanga, i whakahaerehia ngā whakamātautau mō te whakarite i te raima para kōhatu iti-waro me te kaha-tino-teitei mā te whakamahi i ngā rauemi mata pēnei i ngā kōhatu me te para mai i te whānuitanga o ngā puna ā-rohe. E whakaatu ana ngā hua ko te horopeta tika o te metakaolin he 10%. Ko te ōwehenga papatipu ki te kaha o te takoha sima mō ia wae taumaha o te raima para kōhatu tino-tino-teitei he tata ki te 4.17 ngā wā o te raima noa, 2.49 ngā wā o te raima kaha-tino-teitei (HSC), me te 2.02 ngā wā o te raima paura tauhohe (RPC). Nō reira, ko te raima para kōhatu tino-tino-teitei i whakaritea ki te sima iti te horopeta te ahunga o te whanaketanga raima i te wā o te ōhanga iti-waro.

(3) Whai muri i te tāpiri i te kaolin me te ātete huka ki te raima, ka tino whakaitihia te rahi o ngā pūwero o te raima, ka pai ake te huringa tio-rewa o te raima. I raro i tētahi maha o ngā huringa tio-rewa, he nui ake te modulus elastic o te tauira raima me te ihirangi kaolin 15% i te 28 rā te pakeke i tērā o te raima tohutoro i te 28 rā te pakeke. Mā te whakamahinga whakakotahi o te metakaolin me ētahi atu paura tino pai o te kohuke ki roto i te raima ka taea hoki te whakapai ake i te roa o te ora o te raima.