ʻO ka sima alumina, ka mea i ʻike ʻia he kiʻekiʻe alumina cement (HAC), he ʻano ʻano sima hydraulic i hana ʻia mai ka bauxite a me ka limestone. Ua ʻike mua ʻia ia ma Farani i ka makahiki 1900 a ua hoʻohana nui ʻia i kēia manawa i ke kūkulu ʻana ma muli o kona mau waiwai kūʻokoʻa a me nā mea maikaʻi ma mua o nā ʻano ʻano sima. Ma kēia ʻatikala, e ʻimi mākou i ke kumu, nā ʻano, nā mea maikaʻi, a me nā hoʻohana ʻana o ka sima alumina.

Ua ʻike mua ʻia ʻo Origins Aluminate cement ma Farani i ka makahiki 1900 e kahi ʻenekini Farani ʻo Jules Bied. Ua ʻike ʻo ia ma ka hoʻomehana ʻana i ka hui ʻana o ka bauxite a me ka limestone i kahi wela kiʻekiʻe, ua hana ʻia kahi mea sima i loaʻa ka ikaika kiʻekiʻe a me ka lōʻihi. Ua ʻike mua ʻia kēia mea ʻo "ciment fondu" a i ʻole "cement hehee" ma ka ʻōlelo Palani, a ua hoʻopaʻa ʻia ʻo ia ma ke ʻano he kima alumina kiʻekiʻe.

ʻO nā hiʻohiʻona he mau hiʻohiʻona kūʻokoʻa ka alumina alumina i ʻokoʻa mai nā ʻano sima ʻē aʻe. Aia kēia mau hiʻohiʻona:

1. ʻO ka hoʻonohonoho wikiwiki: Hoʻonohonoho wikiwiki ka alumina sima, me kahi manawa hoʻonohonoho ma kahi o 4-5 mau hola. He mea kūpono kēia no nā noi kahi e koi ʻia ai ka hoʻonohonoho wikiwiki, e like me ke anuanu a i ʻole ke hoʻoponopono wikiwiki ʻia.
2. Kiʻekiʻe kiʻekiʻe ka ikaika mua: Aluminate cement he kiʻekiʻe ka ikaika mua, me ka ikaika compressive ma kahi o 50-70 MPa ma hope o hoʻokahi lā o ka ho'ōla. He mea kūpono kēia no nā noi kahi e koi ʻia ai ka ikaika mua, e like me ka precast concrete a i ʻole no ka hoʻoponopono ʻana.
3. ʻO ka wela kiʻekiʻe o ka hydration: Hoʻopuka ka sima alumina i ka nui o ka wela i ka wā o ka hydration kaʻina, hiki ke lilo i mea maikaʻi a me ka pōʻino. ʻO kēia wela kiʻekiʻe o ka hydration he mea kūpono ia no ka hoʻohana ʻana i ke anuanu, no ka mea hiki ke kōkua i ka hoʻolalelale i ke kaʻina hana. Eia nō naʻe, hiki iā ia ke alakaʻi i ka haki ʻana a me nā ʻano pōʻino ʻē aʻe inā ʻaʻole mālama pono ʻia.
4. Ke kapuaʻi kalapona haʻahaʻa: He haʻahaʻa haʻahaʻa ka wāwae kalapona alumina ma mua o ka sima Portland maʻamau, no ka mea, pono ia i nā mahana haʻahaʻa i ka wā o ka hana ʻana a he liʻiliʻi ka clinker.

Loaʻa nā pōmaikaʻi ʻo Aluminate cement ma mua o nā ʻano sima ʻē aʻe, e like me:

1. Hoʻonohonoho wikiwiki: Hoʻonohonoho wikiwiki ka alumina sima, hiki ke mālama i ka manawa a hoʻemi i nā kumukūʻai kūkulu.
2. ʻO ka ikaika kiʻekiʻe o ka wā mua: He ikaika kiʻekiʻe ka alumina sima, hiki ke hoʻemi i ka manawa e pono ai no ka ho'ōla a hoʻonui i ka huahana.
3. Palekana sulfate kiʻekiʻe: He kiʻekiʻe ke kūʻē ʻana o ka sima alumina i ka hoʻouka ʻana i ka sulfate, kahi e kūpono ai no ka hoʻohana ʻana i nā wahi me ka nui o ka sulfate kiʻekiʻe, e like me nā wahi kahakai.
4. Hoʻemi haʻahaʻa: He haʻahaʻa haʻahaʻa ka emi ʻana o ka sima alumina ma mua o ka sima Portland kahiko, hiki ke hōʻemi i ka pilikia o ka haki ʻana a me nā ʻano ʻino ʻē aʻe.

Hoʻohana ʻia ʻo Aluminate cement i nā ʻano hana like ʻole, me:

1. Hoʻopili wikiwiki: Hoʻohana pinepine ʻia ka sima alumina i nā noi kahi e koi ʻia ai ka hoʻonohonoho wikiwiki, e like me ke anuanu a i ʻole no ka hoʻoponopono wikiwiki.
2. Precast concrete: Hoʻohana pinepine ʻia ka sima alumina i ka hana ʻana i nā huahana precast concrete, e like me nā paipu paʻa, nā papa, a me nā panela.
3. Cement refractory: Hoʻohana pinepine ʻia ʻo Aluminate cement i ka hana ʻana i ka cement refractory, i hoʻohana ʻia e laina i nā umu wela wela, kiln, a me nā mea hana ʻoihana ʻē aʻe.
4. Nā noi kūikawā: Hoʻohana pū ʻia ʻo Aluminate cement i nā noi kūikawā, e like me ka hana ʻana i ka paʻakai paʻa ponoʻī a ma ke ʻano he mea hoʻopaʻa i kekahi mau ʻano mea niho.

ʻO ka hopena he ʻano sima kū hoʻokahi ʻo Aluminate e hāʻawi ana i nā mea maikaʻi ma mua o ka sima Portland kahiko. Loaʻa iā ia kahi kapuaʻi kalapona haʻahaʻa, hoʻonohonoho wikiwiki, loaʻa ka ikaika mua kiʻekiʻe, a kūpaʻa loa i ka hoʻouka kaua sulfate. Hoʻohana ʻia ʻo Aluminate cement i nā ʻano noi like ʻole, e like me ka hoʻonohonoho wikiwiki ʻana, precast concrete, refractory cement, a me nā noi kūikawā e like me nā mea niho. ʻOiai he nui nā pono o ka sima aluminate, he mea nui e hoʻomaopopo he loaʻa kekahi mau hemahema e pono e noʻonoʻo ʻia. Hiki i ka wela nui o ka hydration ke alakaʻi i ka māhā a me nā ʻano pōʻino ʻē aʻe inā ʻaʻole mālama pono ʻia, a hiki ke ʻoi aku ke kumukūʻai ma mua o ka sima Portland kahiko. Eia nō naʻe, ʻoi aku ka nui o nā pono o ka hoʻohana ʻana i ka sima aluminate ma mua o nā kumukūʻai, ʻoi aku hoʻi i nā noi kūikawā kahi e pono ai kāna mau waiwai.