He aha ka hopena o ka celloulse eter i nā mea i kauʻia ma luna o nā kumuwaiwai cement?

1. Wela o ka hydration

Wahi a ke kaheʻana o ka neʻe o ka wela o ka hydration ma mua o ka manawa, ua hoʻokaʻawaleʻia ka manawa kiʻekiʻe (4h).

Hōʻike nā hopena hōʻike hōʻike i ka manawa mua o ka incuction (ʻo ia hoʻi, ka nui o ka hemc o ka slurry. I ka nui oHemcHoʻonui i ka wā i luna o ka 0.3%,ʻo ka exothermic mua o ka slurry, a pau ka nui o ka piak no ka hoʻonuiʻana o ka nui o nāʻano hemc; E hoʻolōʻihi i ka hemc i ka manawa hoʻomohala a me ka wikiwiki o ka slurry, a me kaʻoi aku ka nui o ka hoʻolahaʻana, a me ka manawa hou i hoʻi hou i ka manawa seotympic pek; ʻO ka loli o nā mea i hikiʻole ke loaʻa i ka lōʻihi o ka lōʻihi o ka hydration o ka hydration o ka hydration 3 (b).

ʻO Fig.3ʻO keʻano hiʻohiʻona o ka hoʻokuʻu wela wela o ka heluʻana o ka cement

2. MʻO nā waiwai kūpono:

Ma ka aʻoʻana iʻelua mauʻano o nā naʻohanaʻelua me nā viscories o 6000000 hale i ka ikaika i hoʻohuiʻia me ka piʻiʻana o ka mathll collulohu Ka ikaika o ka ikaika o ka momi i hoʻohuiʻia me 100000pa · s viscosity hydrolusyf e hoʻonui muaʻia Hōʻikeʻia ia e hoʻopili ana i ka hoʻohuiʻana o ka hui mibinl hope loa e hōʻemi nui ai i ka ikaika o keʻano o ka hanu. ʻO ka nui o ka nui,ʻo ia ka meaʻoi aku ka ikaika; ʻO ka mea liʻiliʻi i ka viscosity,ʻoi aku ka nui o ka hopena ma ka nalowale o ka ikaika o ka ikaika; ʻO Hydroxyprooppyl Milll Cellilouse eter i ka wā e emi ai ka Dosage ma mua o 0.1%,ʻo ka ikaika o ka mortar hiki ke hoʻonuiʻia. Keʻoi aku ka nui o ka Dosage ma mua o 0.1%,ʻo ka ikaika o ka mory e hōʻemi ai i ka hoʻonuiʻana o ka dosage, no laila e kāohiʻia nā dosage ma 0.1%.

Fig.4 3D, 7d a me 28D a me 28d ka ikaika o Mc1, mc2 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3 a me Mc3

(Materyl cellulouse eter

3. CLoting Time:

Ma ke anaʻana i ka manawa o ka manawa o ka hydroxxyprooparllurel mameylcelulse ether, ua loaʻa ka hopena o ka hana maʻamau a me ka hoʻonui mua o ka hua mua. I ka wā e loaʻa ai ka heluʻana o ka helu 1%,ʻo ka manawa kau mua i hiki ai i nā minuke 510 mau minuke, a hiki i ka manawa hope loa ke hōʻea i nā minuke 850. Ua hoʻohālikelikeʻia me ka papa pōkole,ʻo ka manawa mua e hoʻonuiʻia e 210 mau minuke, aʻo ka manawa hope loa e hoʻonuiʻia e ka helu 50 mau minuke 5). Inā he hpmc me ka viscosity o 50000pa S, 100000pa S, e hoʻohālikelikeʻia me ka hoʻonuiʻana o ka Viscosity ʻO kēia no ka mea,ʻo Cellouse Eter e pili ana i ka papa o nā'āpana cement, e pale i ka wai mai ka hoʻopiliʻana i ka cement. ʻO kaʻoi aku ka nui o ka viscosity o cellouse eter, ka mea kahakiʻi i ka papa o ka hoʻolahaʻana ma kaʻaoʻao o Centros, a me ka nui o ka hopena o ka haʻaleleʻana.

Fig.5 ka hopena o nāʻikepili o Cellouse Ether i ka manawa o ka manawa

ʻO ka hopena o Fig.6 o nā viscoosities likeʻole o HPMC ma ka manawa o ka hoʻonohonohoʻana o ka hana cement

(MC-5 (5000000A · S), MC-10 (100000A · s) a me MC-200000A · mau)

ʻO Mathyl Cellouse Ether a me HydroxyPyl MillLouse Ethert ka pilikiaʻana.

4

ʻO ka hopena o ka cellouse ether kaʻike ma keʻano o ka wai. Loaʻa ka loaʻa me ka hoʻonuiʻana o nāʻikepili o Cellulose ether, ka nui o ka nui o ka papaʻai, a iʻole ka pae o ka wai e paʻa ai. Eia nō naʻe, ke hoʻohālikelike nei i nāʻanoʻekolu o nā momi cellulose (hpmc me kahi viscosity o 50000pa s (mc-8), 100000. ʻO ka pilina ma waena o ka nui o ka helu o ka wai: mc-5.