1. Ka wela o ka hydration
Wahi a ke kaʻina hoʻokuʻu o ka wela o ka hydration i ka hala ʻana o ka manawa, ua māhele ʻia ke kaʻina hana hydration o ka sima i ʻelima mau pae, ʻo ia hoʻi, ka wā hydration mua (0~15min), ka wā hoʻokomo (15min~4h), ka wā hoʻolalelale a me ka manawa hoʻonohonoho (4h~8h), ka wā deceleration a me ka wā paʻakikī (8h~24h), a me ka wā hoʻōla (1d~28d).
Hōʻike nā hopena hoʻāʻo i ka wā mua o ka hoʻokomo ʻana (ʻo ia hoʻi, ka wā hydration mua), i ka wā he 0.1% ka nui o HEMC i hoʻohālikelike ʻia me ka slurry sima hakahaka, ua piʻi aʻe kahi piko exothermic o ka slurry a ua hoʻonui nui ʻia ka piko. Ke piʻi ka nui oHEMCpiʻi a i Ke ʻoi aku ma mua o 0.3%, ua lohi ka piko exothermic mua o ka slurry, a emi mālie ka waiwai piko me ka piʻi ʻana o ka ʻike HEMC; E hoʻopaneʻe maopopo ʻo HEMC i ka manawa hoʻokomo a me ka wā wikiwiki o ka slurry sima, a ʻo ka nui o ka ʻike, ʻo ka lōʻihi o ka manawa hoʻokomo, ʻoi aku ka hoʻi hope o ka manawa wikiwiki, a ʻoi aku ka liʻiliʻi o ka piko exothermic; ʻaʻohe hopena maopopo o ka loli o ka ʻike cellulose ether i ka lōʻihi o ka wā deceleration a me ka wā paʻa o ka slurry sima, e like me ka mea i hōʻike ʻia ma ke Kiʻi 3 (a) Ua hōʻike ʻia hiki i ka cellulose ether ke hōʻemi i ka wela o ka hydration o ka paste sima i loko o 72 mau hola, akā i ka wā ʻoi aku ka lōʻihi o ka wela o ka hydration ma mua o 36 mau hola, ʻaʻole nui ka hopena o ka loli o ka ʻike cellulose ether i ka wela o ka hydration o ka paste sima, e like me ke Kiʻi 3 (b).
Kiʻi 3. ʻO ke ʻano o ka hoʻokuʻu ʻana o ka wela hydration o ka paʻi sima me nā ʻano like ʻole o ka cellulose ether (HEMC)
2. Mnā waiwai ʻenekinia：
Ma ke aʻo ʻana i ʻelua ʻano cellulose ethers me nā viscosities o 60000Pa·s a me 100000Pa·s, ua ʻike ʻia ua emi mālie ka ikaika compressive o ka mortar i hoʻololi ʻia i hui pū ʻia me ka methyl cellulose ether me ka hoʻonui ʻia o kona ʻike. Hoʻonui mua ka ikaika compressive o ka mortar i hoʻololi ʻia i hui pū ʻia me ka viscosity 100000Pa·s hydroxypropyl methyl cellulose ether a laila emi iho me ka hoʻonui ʻia o kona ʻike (e like me ka mea i hōʻike ʻia ma ke Kiʻi 4). Hōʻike ia e hōʻemi nui ka hoʻohui ʻana o ka methyl cellulose ether i ka ikaika compressive o ka mortar sima. ʻO ka nui o ka nui, ʻoi aku ka liʻiliʻi o ka ikaika; ʻo ka liʻiliʻi o ka viscosity, ʻoi aku ka nui o ka hopena i ka nalowale o ka ikaika compressive mortar; hydroxypropyl methyl cellulose ether Ke emi ka dosage ma mua o 0.1%, hiki ke hoʻonui kūpono ʻia ka ikaika compressive o ka mortar. Ke ʻoi aku ka dosage ma mua o 0.1%, e emi ka ikaika compressive o ka mortar me ka hoʻonui ʻana o ka dosage, no laila pono e kāohi ʻia ka dosage ma 0.1%.
Kiʻi 4 3d, 7d a me 28d ka ikaika compressive o ka mortar sima i hoʻololi ʻia ʻo MC1, MC2 a me MC3
(Methyl cellulose ether, viscosity 60000Pa·S, ma hope aku i kapa ʻia ʻo MC1; methyl cellulose ether, viscosity 100000Pa·S, i kapa ʻia ʻo MC2; hydroxypropyl methylcellulose ether, viscosity 100000Pa·S, i kapa ʻia ʻo MC3).
3. Cka manawa lotting：
Ma ke ana ʻana i ka manawa hoʻonohonoho o ka hydroxypropyl methylcellulose ether me ka viscosity o 100000Pa·s i nā dosages like ʻole o ka paʻi sima, ua ʻike ʻia me ka hoʻonui ʻia ʻana o ka dosage HPMC, ua hoʻolōʻihi ʻia ka manawa hoʻonohonoho mua a me ka manawa hoʻonohonoho hope loa o ka sima sima. Ke 1% ka nui o ka noʻonoʻo, hiki ka manawa hoʻonohonoho mua i 510 mau minuke, a hiki ka manawa hoʻonohonoho hope loa i 850 mau minuke. Ke hoʻohālikelike ʻia me ka hāpana hakahaka, ua hoʻolōʻihi ʻia ka manawa hoʻonohonoho mua e 210 mau minuke, a ua hoʻolōʻihi ʻia ka manawa hoʻonohonoho hope loa e 470 mau minuke (e like me ka mea i hōʻike ʻia ma ke Kiʻi 5). Inā he HPMC me ka viscosity o 50000Pa s, 100000Pa s a i ʻole 200000Pa s, hiki iā ia ke hoʻopaneʻe i ka hoʻonohonoho ʻana o ka sima, akā ke hoʻohālikelike ʻia me nā cellulose ethers ʻekolu, ua hoʻolōʻihi ʻia ka manawa hoʻonohonoho mua a me ka manawa hoʻonohonoho hope loa me ka hoʻonui ʻia o ka viscosity, e like me ka mea i hōʻike ʻia ma ke Kiʻi 6 i hōʻike ʻia. ʻO kēia no ka mea ua hoʻopili ʻia ka cellulose ether ma luna o ka ʻili o nā ʻāpana sima, kahi e pale ai i ka wai mai ka hoʻopili ʻana me nā ʻāpana sima, a pēlā e hoʻopaneʻe ai i ka hydration o ka sima. ʻO ka nui o ka viscosity o ka cellulose ether, ʻoi aku ka mānoanoa o ka papa adsorption ma luna o ka ʻili o nā ʻāpana sima, a ʻoi aku ka koʻikoʻi o ka hopena retarding.
Kiʻi 5 Ka hopena o ka nui o ka cellulose ether i ka manawa hoʻonohonoho o ka mortar
Kiʻi 6 Ka hopena o nā viscosities like ʻole o HPMC i ka manawa hoʻonohonoho o ka paʻi sima
(MC-5(50000Pa·s), MC-10(100000Pa·s) a me MC-20(200000Pa·s))
E hoʻolōʻihi nui ka Methyl cellulose ether a me ka hydroxypropyl methyl cellulose ether i ka manawa hoʻonohonoho o ka slurry sima, hiki ke hōʻoia i ka lawa ʻana o ka manawa a me ka wai o ka slurry sima no ka hopena hydration, a hoʻoponopono i ka pilikia o ka ikaika haʻahaʻa a me ke kahua hope o ka slurry sima ma hope o ka paʻakikī. pilikia nahā.
4. Ka paʻa ʻana o ka wai:
Ua aʻo ʻia ka hopena o ka nui o ka cellulose ether i ka paʻa ʻana o ka wai. Ua ʻike ʻia me ka hoʻonui ʻia o ka nui o ka cellulose ether, piʻi ka nui o ka paʻa ʻana o ka wai o ka mortar, a i ka wā e ʻoi aku ai ka nui o ka cellulose ether ma mua o 0.6%, paʻa ka nui o ka paʻa ʻana o ka wai. Eia nō naʻe, i ka hoʻohālikelike ʻana i ʻekolu ʻano o nā cellulose ethers (HPMC me ka viscosity o 50000Pa s (MC-5), 100000Pa s (MC-10) a me 200000Pa s (MC-20)), ʻokoʻa ka mana o ka viscosity i ka paʻa ʻana o ka wai. ʻO ka pilina ma waena o ka nui o ka paʻa ʻana o ka wai: MC-5.
Ka manawa hoʻouna: ʻApelila-28-2024