1) ʻO ka hoʻomaikaʻi ʻana i ka ikaika o ka slurry sima a me ka mortar kekahi o nā hiʻohiʻona o ka hana kiʻekiʻe o ka sima. ʻO kekahi o nā kumu nui o ka hoʻohui ʻana i ka metakaolin, ʻo ia ka hoʻomaikaʻi ʻana i ka ikaika o ka mortar sima a me ka sima.

ʻO Poon et al, ʻO kona ikaika ma 28d a me 90d ua like ia me ko ka sima metakaolin, akā ʻoi aku ka haʻahaʻa o kona ikaika mua ma mua o ka sima benchmark. Hōʻike ka loiloi e pili paha kēia i ka hoʻopili nui ʻana o ka pauka silicon i hoʻohana ʻia a me ka lawa ʻole o ka hoʻopuehu ʻana i loko o ka slurry sima.

(2) Ua aʻo ʻo Li Keliang et al. (2005) i nā hopena o ka mahana calcination, ka manawa calcination, a me ka nui o SiO2 a me A12O3 i loko o kaolin ma ka hana o metakaolin e hoʻomaikaʻi i ka ikaika o ka sima sima. Ua hoʻomākaukau ʻia nā polymers sima ikaika a me ka lepo me ka hoʻohana ʻana i ka metakaolin. Hōʻike nā hopena i ka wā he 15% ka nui o ka metakaolin a he 0.4 ka lakio sima wai, ʻo ka ikaika compressive i 28 mau lā he 71.9 MPa. Ke 10% ka nui o ka metakaolin a he 0.375 ka lakio sima wai, ʻo ka ikaika compressive i 28 mau lā he 73.9 MPa. Eia kekahi, i ka wā he 10% ka nui o ka metakaolin, hiki i kāna helu hana i 114, ʻo ia hoʻi he 11.8% kiʻekiʻe ma mua o ka nui like o ka pauka silicon. No laila, ua manaʻoʻiʻo ʻia hiki ke hoʻohana ʻia ka metakaolin e hoʻomākaukau i ka sima ikaika kiʻekiʻe.

Ua aʻo ʻia ka pilina axial tensile stress-strain o ka sima me 0, 0.5%, 10%, a me 15% metakaolin content. Ua ʻike ʻia me ka hoʻonui ʻia ʻana o ka metakaolin content, ua hoʻonui nui ʻia ke ʻano kiʻekiʻe o ka axial tensile strength o ka sima, a ua noho mau ka tensile elastic modulus i loli ʻole. Eia naʻe, ua hoʻonui nui ʻia ka ikaika compressive o ka sima, ʻoiai ua emi like ka lakio ikaika compressive. ʻO ka ikaika tensile a me ka ikaika compressive o ka sima me ka 15% kaolin content he 128% a me 184% o ka sima kuhikuhi, kēlā me kēia.
I ke aʻo ʻana i ka hopena hoʻoikaika o ka pauka ultrafine o metakaolin ma ka sima, ua ʻike ʻia ma lalo o ke kahe like, ua piʻi ka ikaika compressive a me ka ikaika flexural o ka mortar e loaʻa ana he 10% metakaolin ma 6% a 8% ma hope o 28 mau lā. ʻOi aku ka wikiwiki o ka hoʻomohala ʻana o ka ikaika mua o ka sima i hui pū ʻia me metakaolin ma mua o ka sima maʻamau. Ke hoʻohālikelike ʻia me ka sima benchmark, ʻo ka sima e loaʻa ana he 15% metakaolin he 84% ka piʻi ʻana o ka ikaika compressive axial 3D a me 80% ka piʻi ʻana o ka ikaika compressive axial 28d, ʻoiai ʻo ka modulus elastic static he 9% ka piʻi ʻana o 3D a me 8% ka piʻi ʻana o 28d.

Ua aʻo ʻia ka mana o ka hui like ʻana o ka lepo metakaolin a me ka slag ma ka ikaika a me ke kūpaʻa o ka sima. Hōʻike nā hopena e hoʻomaikaʻi ka hoʻohui ʻana i ka metakaolin i ka sima slag i ka ikaika a me ke kūpaʻa o ka sima, a ʻo ka lakio kūpono o ka slag i ka sima ma kahi o 3:7, e hopena ana i ka ikaika sima kūpono. ʻOi aku ka ʻokoʻa o ke kua o ka sima hui ma mua o ka sima slag hoʻokahi ma muli o ka hopena lehu pele o ka metakaolin. ʻOi aku ka kiʻekiʻe o kona ikaika tensile mahele ma mua o ka sima benchmark.

Ua aʻo ʻia ka hana, ka ikaika compressive, a me ke kūpaʻa o ka sima ma ka hoʻohana ʻana i ka metakaolin, ka lehu lele, a me ka slag ma ke ʻano he pani no ka sima, a me ke kāwili ʻana i ka metakaolin me ka lehu lele a me ka slag kaʻawale e hoʻomākaukau i ka sima. Hōʻike nā hopena i ka wā e pani ai ka metakaolin i ka 5% a i ka 25% sima ma nā nui like, hoʻomaikaʻi ʻia ka ikaika compressive o ka sima i nā makahiki āpau; Ke hoʻohana ʻia ka metakaolin e pani i ka sima ma 20% ma nā nui like, kūpono ka ikaika compressive i kēlā me kēia makahiki, a ʻo kona ikaika ma 3d, 7d, a me 28d he 26.0%, 14.3%, a me 8.9% kiʻekiʻe ma mua o ka sima me ka ʻole o ka metakaolin i hoʻohui ʻia. Hōʻike kēia no ka sima Portland Type II, hiki i ka hoʻohui ʻana i ka metakaolin ke hoʻomaikaʻi i ka ikaika o ka sima i hoʻomākaukau ʻia.

ʻO ka hoʻohana ʻana i ka slag kila, metakaolin, a me nā mea ʻē aʻe ma ke ʻano he mea maka nui e hoʻomākaukau ai i ka sima geopolymer ma kahi o ka sima Portland kuʻuna, i mea e hoʻokō ai i ka pahuhopu o ka mālama ʻana i ka ikehu, ka hoʻemi ʻana i ka hoʻohana ʻana, a me ka hoʻolilo ʻana i ka ʻōpala i waiwai. Hōʻike nā hopena i ka wā e 20% ka nui o ke kila a me ka lehu lele, hiki i ka ikaika o ka poloka hoʻāʻo ma 28 mau lā ke kiʻekiʻe loa (95.5MPa). I ka piʻi ʻana o ka nui o ka slag kila i hoʻohui ʻia, hiki iā ia ke pāʻani i kahi kuleana i ka hōʻemi ʻana i ka emi ʻana o ka sima geopolymer.

Ma ka hoʻohana ʻana i ke ala loea o "Portland cement+active mineral admixture+high-efficiency water reducing agent", ʻenehana konike wai magnetized, a me nā kaʻina hana hoʻomākaukau maʻamau, ua hana ʻia nā hoʻokolohua ma ka hoʻomākaukau ʻana i ka konike pōhaku haʻahaʻa kalapona a me ka ikaika loa me ka hoʻohana ʻana i nā mea maka e like me nā pōhaku a me ka slag mai nā kumu kūloko like ʻole. Hōʻike nā hopena he 10% ka nui kūpono o ka metakaolin. ʻO ka lakio nuipa i ka ikaika o ka hāʻawi ʻana o ka sima no kēlā me kēia anakahi nuipa o ka konike pōhaku ikaika loa he 4.17 mau manawa o ka konike maʻamau, 2.49 mau manawa o ka konike ikaika kiʻekiʻe (HSC), a me 2.02 mau manawa o ka konike pauka reactive (RPC). No laila, ʻo ka konike pōhaku ikaika loa i hoʻomākaukau ʻia me ka sima haʻahaʻa ke kuhikuhi o ka hoʻomohala ʻana o ka konike i ka wā hoʻokele waiwai haʻahaʻa kalapona.

(3) Ma hope o ka hoʻohui ʻana i ke kaolin me ke kū'ē ʻana i ka hau i ka sima, ua hoʻemi nui ʻia ka nui o nā pore o ka sima, e hoʻomaikaʻi ana i ke kaʻapuni hau-hoʻoheheʻe o ka sima. Ma lalo o kekahi helu o nā kaʻapuni hau-hoʻoheheʻe, ʻoi aku ka kiʻekiʻe o ka modulus elastic o ka hāpana sima me ka ʻike kaolin 15% i 28 mau lā o ka makahiki ma mua o ka sima kuhikuhi i 28 mau lā o ka makahiki. ʻO ka hoʻopili hui ʻana o ka metakaolin a me nā pauka mineral ultrafine ʻē aʻe i loko o ka sima hiki ke hoʻomaikaʻi nui i ke kūpaʻa o ka sima.