Mgbe polycarboxylic acid dabeere na elu-arụmọrụ superplasticizer (onye na-ebelata mmiri) agbakwunyere na 0.2% na 0.3% nke oke nke ihe ciment, ọnụ ọgụgụ na-ebelata mmiri nwere ike ịdị elu dị ka 25% ruo 45%. A na-ekwenyekarị na polycarboxylic acid na-arụ ọrụ dị elu nke na-ebelata mmiri nke na-eme ka mmiri dị elu nwere nhazi nke na-eme ka ọkpụkpụ, nke na-emepụta mmetụta mgbochi siri ike site n'ịgbasa na cement particles ma ọ bụ ciment hydration ngwaahịa, ma na-ekere òkè n'ịgbasa na ịnọgide na-enwe mgbasa nke ciment. Ọmụmụ nke njirimara mgbasa ozi nke ndị na-ebelata mmiri na-eme ka mmiri dị n'elu gypsum particles na usoro mgbasa ozi mgbasa ozi ha egosila na polycarboxylic acid nke na-eme ka mmiri dị elu na-eme ka mmiri dị elu na-eme ka ọ bụrụ ihe na-eme ka ọkpụkpụ na-eme ka ọ bụrụ ihe na-eme ka ọkpụkpụ na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọkpụkpụ na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka ọ dị mma, na-enwe obere mgbasa ozi na elu gypsum na-adịghị ike electrostatic mmetụta. Mmetụta mgbasa ya na-esite na mmetụta mgbochi siri ike nke oyi akwa adsorption. Mgbasa na-emepụta site na mmetụta mgbochi siri ike na-emetụta hydration nke gypsum, ma si otú ahụ nwee nkwụsi ike nke mgbasa ozi ọma.
Simenti nwere mmetụta na-akwalite ntọala na gypsum, nke ga-eme ka oge nhazi nke gypsum dịkwuo ngwa. Mgbe usoro onunu ogwu gafere 2%, ọ ga-enwe mmetụta dị ịrịba ama na mmalite mmiri mmiri, na mmiri mmiri ga-akawanye njọ na mmụba nke usoro ciment. Ebe ọ bụ na ciment nwere mmetụta na-akwalite gypsum, iji belata mmetụta nke oge nhazi oge na mmiri mmiri gypsum, a na-agbakwunye gypsum retarder kwesịrị ekwesị na gypsum. Mmiri nke gypsum na-abawanye na mmụba nke usoro ciment; mgbakwunye nke ciment na-abawanye alkalinity nke usoro ahụ, na-eme ka onye na-ebelata mmiri na-agbaji ngwa ngwa na nke zuru oke na usoro ahụ, na-eme ka mmetụta na-ebelata mmiri na-abawanye; n'otu oge ahụ, ebe ọ bụ na mmiri na-achọ ciment n'onwe ya dị ntakịrị, ọ bụ ihe na-eme ka ọnụ ọgụgụ mmiri-ciment dị n'okpuru otu ihe mgbakwunye mmiri, nke ga-eme ka mmiri dịkwuo ntakịrị.
Polycarboxylate Water reducer nwere ọmarịcha mgbasa ma nwee ike imeziwanye mmiri nke gypsum na obere usoro onunu ogwu. Site na mmụba nke usoro onunu ogwu, mmiri nke gypsum na-abawanye nke ukwuu. Polycarboxylate mmiri ebelata nwere mmetụta retarding siri ike. Site na mmụba nke usoro onunu ogwu, oge nhazi na-abawanye nke ukwuu. Site na mmetụta siri ike nke na-ebelata mmiri polycarboxylate, n'okpuru otu mmiri na-ciment, mmụba nke usoro onunu ogwu nwere ike ime ka nrụrụ nke kristal gypsum na ịtọpụ gypsum. Ike mgbanwe na mkpakọ nke gypsum na-ebelata na mmụba nke usoro onunu ogwu.
Polycarboxylate ether ndị na-ebelata mmiri na-ebelata ntọala gypsum ma belata ike ya. N'otu usoro ọgwụgwọ ahụ, ịgbakwunye ciment ma ọ bụ calcium oxide na gypsum na-eme ka ọ dịkwuo mma. Nke a na-ebelata oke mmiri na-ciment, na-abawanye njupụta nke gypsum, ya mere ike ya. Ọzọkwa, mmetụta na-ewusi ike nke ngwaahịa hydration ciment na gypsum na-abawanye ike mgbanwe ya na mkpakọ. Ịba ụba nke ciment na calcium oxide na-eme ka mmiri dị na gypsum dịkwuo mma, na oke ciment kwesịrị ekwesị nwere ike ime ka ike ya dịkwuo mma.
Mgbe ị na-eji polycarboxylate ether mmiri na-ebelata mmiri na gypsum, ịgbakwụnye simenti kwesịrị ekwesị ọ bụghị naanị na-abawanye ike ya kamakwa ọ na-enye nnukwu mmiri mmiri na obere mmetụta na oge nhazi ya.
Oge nzipu: Ọgọst-06-2025