I ka makahiki 1940,sima uweahoʻomaka e hoʻohana ʻia i ka ʻoihana hana moku.I kēia manawa, ʻaʻole i hoʻohana wale ʻia no ka hana moku, akā i ka nui o nā hopohopo.Ua ʻike maopopo ʻia ʻo ka manuahi calcium oxide i loko o ka clinker ciment e pili ana i ka kūpaʻa, no ka mea, hoʻomaka ka hydrate calcium manuahi ma hope o ka paʻakikī sima, ʻo ka nui o kāna mau huahana wai biliona (calcium hydroxide) e hoʻonui i 1.5 ~ 2.0 mau manawa, no laila ka pohā ke kino paʻakikī sima, ka hopena i ka paʻa maikaʻi ʻole.
No laila, hiki ke noʻonoʻo ʻia inā manuahi ka calcium oxide i ka sima paʻakikī i ka wā e hiki mai ana ka nele o ka hydration, a laila ʻaʻole ia e kumu i ka pilikia o ka paʻa ʻana o ka sima.Hōʻike ka ʻikepili pili i ka hopena o ka calcium oxide manuahi i loko o ka lehu kiln ma ke kūpaʻa ʻoi aku ka māmā ma mua o ka hopena o ka calcium oxide manuahi i ka clinker.Hiki ke ʻike ʻia he ʻokoʻa ka hydration rate o ʻelua ʻano o ka calcium oxide manuahi.He wikiwiki ka hydration rate o ka calcium oxide i loko o ka lehu kiln.ʻO kekahi o nā kumu he haʻahaʻa ka mahana wela o ka lehu kiln ma mua o ka clinker a aia ka lehu kiln i ke ʻano ʻā.ʻOi aku ka maʻalahi o ka hoʻomaʻemaʻe ʻana i ka calcium oxide e ʻā ana ma mua o ke kiʻekiʻe kiʻekiʻe o ka calcium oxide.
ʻOi aku ka liʻiliʻi o ka pale i ke ʻano o ka ʻōwili ʻia.He kiʻekiʻe ka maʻiʻo o ka calcium oxide i loko o ka lehu kiln, a ua maʻalahi ka hydrate e hana i ka calcium hydroxide me ka umekaumaha kikoʻī liʻiliʻi, e pili pū ana i ka hopena o ka ua i ka wai kahe.Hoʻohana ʻia i ke kūkulu ʻana i ka ʻenekinia, hydraulic engineering, ke ʻano o nā huahana a me ka uea mesh ka ~ o ka haku mele ʻana o ke kila mesh cement material, he mea hoʻoikaika ikaika ʻia, ka hāʻawi like ʻana i nā mea brittle (cement mortar), Taiwan me ka mortar sima. , ka ikaika i ka wā o ka deformation hui, me ka li hoʻoikaika i kekahi i kekahi, hāʻawi i ka pāʻani piha i nā hiʻohiʻona o ka mea hoʻohuihui, ua hoʻokumu ʻia kekahi mau ʻano hui me nā waiwai maikaʻi loa.
Ka manawa hoʻouna: 30-07-21