Nā Pākuʻi Paʻa Māmā | Nā ʻĀpana Hoʻohuʻi Kiʻekiʻe no ka Kelepona Kelepona
Ma ka home a ma waho, ʻO ka noiʻi e pili ana i ka hoʻomaikaʻi ʻana i ka ikaika mua o nā polycarboxylate superplasticizers e nānā nui i nā ʻaoʻao ʻelua.：
1 Hoʻohui i ka mea hoʻoikaika ikaika mua i ka polycarboxylic acid wai ho'ēmi wai, no laila e loaʻa i ka mea hoʻemi wai ka hana ikaika mua
2 Ma ka hoʻolālā ʻana i ke ʻano mole o ka polycarboxylate superplasticizer, he ʻo ka polycarboxylate superplasticizer ikaika mua me nā waiwai ikaika mua i synthesized.
Hoʻohui ʻia ka mea hoʻohaʻahaʻa wai waika polycarboxylic mua me kahi mea ikaika mua i loko o ka polycarboxylic acid water reducing agent..
Hiki ke hoʻokaʻawale ʻia nā ʻāpana ikaika mua i ʻekolu mau ʻāpana e like me ka haku mele:
1 nā paʻakai ʻole (me nā paʻakai chloride, nā nitrates, sulfates, carbonates, nā silicates, etc.);
2 mea olaola (me ka triethanolamine, calcium formate, calcium acetate, calcium oxalate, etc.);
3 ʻano hui, nā mea hoʻohuihui a me nā mea ʻole, e like me ka triethanolamine a me ka sodium sulfate complex.
ʻO ka mīkini nui no ka hopena ikaika mua o ka hui ʻana o nā paʻakai inorganic kuʻuna (sodium chloride, calcium chloride) a ʻo ka polycarboxylate superplasticizers ka hana o C3A a me nā paʻakai chloride i loko o ka sima e hana i nā chlorohydrates hiki ʻole i ka wai.. ,Hiki i ka sodium sulphate ke hana me Ca(OH)2 e hana i ka calcium sulphate. He maikaʻi ka dispersibility o kēia calcium sulphate a ua maʻalahi ka hana ʻana i ka hydrated calcium sulphoaluminate crystal me ka tricalcium aluminate. I ka manawa like, ua hoʻokē ʻia ke kaʻina hana hydration o ka tricalcium silicate, a hoʻokē ʻia ka paʻa ʻana o ke kaʻa.
Ua hōʻike nā haʻawina i ka ikaika 3d o NaCl i loko 0.75% ua hoonuiia o ke koneki e 48%, a hiki ke mālama ʻia ka wai o ka hui ʻana;Ua hoʻonui ʻia ka ikaika 3d o ke kaʻa me NaNO3 e 38% i loko 0.75% kaʻina hana, a hiki ke loaʻa ka hopena palekana maikaʻi.
ʻO Triethanolamine ka mea maʻamau i hoʻohana ʻia i ka ikaika mua i loko o nā mea ola,Hoʻoikaika ʻo Triethanolamine i ka hoʻokumu ʻana o ka ettringite i ka ʻōnaehana C-S-H a hoʻomaikaʻi i ka ikaika mua o ka koneki..
ʻO ka N atom i loko o ka triethanolamine ka mea e hana i kahi paʻa covalent me kahi ion metala e hana i kahi paʻa paʻa., ka mea e hoʻokē ai i ka hoʻoheheʻe ʻana o ka tricalcium aluminate a me ka tetracalcium aluminoferrate., ʻo ka hoʻokumu ʻana o ka calcium sulphoaluminate e hōʻemi i ka ʻike o nā ion calcium a me nā ion alumini, e hoʻoikaika hou i ka hydration o ka tricalcium silicate. Hōʻike nā hopena i ka ikaika compressive o ka mortar ma 1d, 3d a me 7d i hoonuiia e 145%, 190% a 135% ma 0.06% o ka triethanolamine.
ʻO ke ʻano hui pū ʻia paha he mea hoʻohui o kahi mea ʻole a me kahi mea ʻole, a i ʻole he hui pū ʻia o kahi mea ʻole a me kahi mea ola, a i ʻole he hui pū ʻana o kahi mea lāʻau a me kahi mea lāʻau., a ua hoemi pu ia ka huina hui.
Hōʻike nā hopena i ka hui mua ʻana o ka polycarboxylic acid wai hoʻohaʻahaʻa wai i hui pū ʻia me ka sodium thiocyanate. (1%) + triethanolamine (0.04%) ua hoʻohālikelike ʻia me ka mortar i hui pū ʻia me ka polycarboxylic acid maʻamau ka mea hoʻemi wai.ʻO ka ikaika o 1d, 3d, a mahuahua ka 7d e 165%, 100%, a 39%, pakahi.
ʻO Cie-China.org ka mea hoʻolako mea hoʻohui kumu hoʻohāhā nui e hāʻawi ana i ka mea hoʻoheheʻe pahu, superplasticizer,mea hoʻonui i ka ikaika o ka ʻūhā no ka lāʻau māmā, Nā poloka CLC. Inā ʻoe e ʻimi nei i ka superplasticizer, e ʻoluʻolu e ʻoluʻolu kāhea iā mā˚ou.