Mgbasa mgbasa ozi bụ ihe dị mkpa teknuzu index tụọ àgwà mgbochi dispersant.Hydroxypropyl methyl cellulosebụ ngwakọta mmiri 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 ụdị hydrophilic polymer ihe, nke nwere ike igbari na mmiri na-emepụta ihe ngwọta ma ọ bụ dispersible mmiri mmiri. Nnwale na-egosi na mgbe ọnụọgụ nke naphthalene system superplasticizer na-abawanye, mgbakwunye nke superplasticizer ga-ebelata nkwụsị nkesa nke ngwa ngwa ciment ọhụrụ. Nke a bụ n'ihi na naphthalene usoro elu oru oma mmiri mbenata gị n'ụlọnga bụ nke elu-arụ ọrụ gị n'ụlọnga, mgbe mmiri mbenata gị n'ụlọnga agbakwunyere na ngwa agha, na mmiri mbenata gị n'ụlọnga na ciment urughuru elu gbakwasara elu nke ciment ahụ na otu ụgwọ, na eletriki ịkpọasị flocculation Ọdịdị nke ciment ahụ kpụrụ site na nkerisi, kechie na Ọdịdị nke mmiri ntọhapụ, ga-eme ka simenti na-efu nke akụkụ nke mmiri ntọhapụ. N'otu oge ahụ, a na-achọpụta na mmụba nke ọdịnaya HPMC, mgbochi mgbasa nke ciment ciment ọhụrụ dị mma ma dị mma.
Àgwà ike nke kọnkịtị:
HPMC n'okpuru mmiri na-abụghị dispersive ihe admixture e etinyere na akwa ntọala engineering nke expressway, na imewe ike ọkwa bụ C25. Mgbe ule bụ isi, ciment onunu ogwu bụ 400kg, compound gwakọtara silica fume 25kg/m3,HPMCkacha usoro onunu ogwu bụ 0.6% nke ciment onunu ogwu, mmiri ciment ruru bụ 0.42, ájá ọnụego bụ 40%, naphthalene elu arụmọrụ mmiri mbenata gị n'ụlọnga mkpụrụ bụ 8% nke ciment onunu ogwu, ihe ụdị n'ikuku 28d, nkezi ike bụ 42.6MPa, The nkezi ike bụ 42.6MPa, The nkezi ike nke n'okpuruwater wụsara mmiri n'okpuru 6 mm. maka ụbọchị 28, na ike ike nke ihe a na-emepụta na mmiri na ihe a na-emepụta na ikuku bụ 84.8%, na-egosi mmetụta dị ịrịba ama.
1. Mgbakwunye nke HPMC nwere mmetụta retarding doro anya na ngwakọta ngwa agha. Site na mmụba nke usoro onunu ogwu HPMC, a na-agbatị oge nhazi ngwa ngwa n'usoro. N'okpuru otu ọnọdụ nke usoro onunu ogwu HPMC, oge nhazi nke ngwa mmiri n'okpuru mmiri dị ogologo karịa nke ikuku. Njirimara a bara uru maka ịgbapụta mmiri n'okpuru mmiri.
2, agwakọta ya na hydroxypropyl methyl cellulose nke ụrọ ciment ọhụrụ nwere njikọ dị mma, ọ fọrọ nke nta ka ọ bụrụ na ọ dịghị ihe na-agba ọbara.
3, HPMC usoro onunu ogwu na mkpa mmiri ngwa agha buru ụzọ belata wee mụbaa nke ukwuu.
4. Ntinye nke onye na-ebelata mmiri na-eme ka nsogbu nke ịba ụba nke mmiri na-achọ ngwa ngwa, ma a ghaghị ịchịkwa ya nke ọma, ma ọ bụghị ya, mgbe ụfọdụ, ọ ga-ebelata nkwụsị mmiri n'okpuru mmiri nke ciment ciment ọhụrụ.
5. E nwere obere ihe dị iche na Ọdịdị n'etiti HPMC agwakọta ciment net slurry ụdị na oghere ụdị, na e nwere obere ihe dị iche na Ọdịdị na compactness n'etiti mmiri wụsara simenti ụdị na ikuku wụsara ciment net slurry ụdị. Ihe nlere ịkpụzi mmiri dị n'okpuru 28d adịchaghị atọ ụtọ. Isi ihe kpatara ya bụ na mgbakwunye HPMC na-ebelata oke mfu na mgbasa nke ciment n'oge a na-awụsa mmiri, ma na-ebelata ogo nke nchịkọta ciment. Na oru ngo, n'okpuru ọnọdụ nke n'ịhụ n'okpuru mmiri na-adịghị mgbasa mmetụta, na-agwakọta ego nke HPMC na-ebelata dị ka o kwere mee.
6, tinyeHPMCmmiri n'okpuru mmiri adịghị achụsasị ihe admixture, ịchịkwa ego nke ezi ike, pilot oru ngo na-egosi na ike ruru nke na-akpụ ihe na mmiri na akpụ na ikuku bụ 84.8%, mmetụta bụ ihe dị ịrịba ama.
Oge nzipu: Eprel-25-2024