Mgbochi mgbasa bụ ihe dị mkpa teknuzu index iji tụọ àgwà nke mgbochi mgbasa ozi.Hydroxypropyl methylcellulose bụ ngwakọta polymer na-agbaze mmiri, nke a makwaara dị ka resin mmiri na-agbaze ma ọ bụ polima na-agbaze mmiri.Ọ na-eme ka nkwekọ nke ngwakọta ahụ dịkwuo mma site n'ịbawanye viscosity nke mmiri na-agwakọta.Ọ bụ ihe polymer hydrophilic.Enwere ike igbari ya na mmiri iji mepụta ngwọta ma ọ bụ mgbasa.Nnwale na-egosi na mgbe ọnụọgụ nke superplasticizer na-arụ ọrụ dị elu nke dabeere na naphthalene na-abawanye, mgbakwunye nke superplasticizer ga-ebelata nkwụsị mgbasa nke ngwa ngwa ciment agwakọta ọhụrụ.Nke a bụ n'ihi na onye na-ebelata mmiri na-arụ ọrụ dị elu nke naphthalene bụ ihe na-emepụta ihe.Mgbe a na-agbakwunye onye na-ebelata mmiri na ngwa ngwa, onye na-ebelata mmiri ga-adaba n'elu akụkụ ciment iji mee ka elu nke ciment ahụ nwee otu ụgwọ ahụ.Igwe ọkụ eletrik a na-eme ka akụkụ ciment na-etolite A na-ekpochapụ usoro flocculation nke ciment ahụ, a na-ahapụkwa mmiri nke a na-etinye n'ime ihe owuwu ahụ, nke ga-eme ka akụkụ nke ciment na-efunahụ ya.N'otu oge ahụ, a na-achọpụta na mmụba nke ọdịnaya HPMC, nkwụsị nke nkwụsị nke ciment ciment ọhụrụ na-akawanye mma.
01. Mgbakwunye nke HPMC nwere mmetụta retarding doro anya na ngwakọta ngwa agha.Site na mmụba nke ọdịnaya HPMC, a na-agbatị oge nhazi nke ngwa agha otu ugboro.N'okpuru otu ọdịnaya HPMC, ngwa agha a kpụrụ n'okpuru mmiri na-adị ngwa ngwa karịa nke ikuku Molding na-ewe ogologo oge ịtọ.Njirimara a bara uru maka ịgbapụta mmiri n'okpuru mmiri.
02. Mgbakwunye nke mmiri na-ebelata mmiri na-eme ka nsogbu nke ụbara mmiri na-achọ ngwa ngwa, ma a ghaghị ịchịkwa usoro ọgwụgwọ ya n'ụzọ ziri ezi, ma ọ bụghị ya, a ga-ebelata mmiri mmiri na-eguzogide mmiri nke ciment gwakọtara ọhụrụ.
03. Enwere obere ihe dị iche na nhazi n'etiti cement tapawa specimen gwakọtara na HPMC na oghere oghere, na ọ dịghị ihe dị iche na nhazi na njupụta nke ciment tapa specimen wụsara na mmiri na ikuku.Ihe nlere nke emere n'okpuru mmiri ụbọchị iri abụọ na asatọ dị ntakịrị.Isi ihe kpatara ya bụ na mgbakwunye nke HPMC na-ebelata oke mfu na mgbasa nke ciment mgbe a na-awụsa na mmiri, ma ọ na-ebelatakwa mkpakọ nke nkume ciment.N'ime ọrụ ahụ, n'okpuru ọnọdụ nke ịhụ na mmetụta nke enweghị mgbasa n'okpuru mmiri, a ga-ebelata dose nke HPMC dị ka o kwere mee.
The HPMC n'okpuru mmiri na-abụghị dispersible ihe admixture na-eji na àkwà mmiri ntọala engineering nke expressway, na imewe ike larịị bụ C25.Dị ka isi ule, ego nke simenti bụ 400kg, na compounded silica fume bụ 25kg / m3, ezigbo ego nke HPMC bụ 0.6% nke ciment ego, mmiri-ciment ruru 0.42, ájá ọnụego bụ 40%, na mmepụta nke naphthalene nke dabeere na mmiri na-arụ ọrụ dị elu nke na-eme ka mmiri dị elu bụ ọnụ ọgụgụ simenti bụ 8%, ihe atụ dị na mbara igwe maka ụbọchị 28, nkezi ike bụ 42.6MPa, ihe dị n'okpuru mmiri nke nwere nkwụsị elu nke 60mm maka ụbọchị 28. , nkezi ike bụ 36.4MPa, ike ruru nke mmiri na-emepụta ihe na ikuku-kpụrụ 84.8%, mmetụta dị ịrịba ama karị.
Oge nzipu: Eprel-24-2023