Ngwa agha na-ebuli onwe ya nwere ike ịdabere n'ịdị arọ nke ya iji mepụta ntọala dị larịị, dị nro na nke siri ike na mkpụrụ maka ịtọ ma ọ bụ jikọta ihe ndị ọzọ.N'otu oge ahụ, ọ nwere ike ịrụ nnukwu ihe owuwu na nke ọma.Ya mere, mmiri mmiri dị elu bụ akụkụ dị oke mkpa nke ngwa agha na-edozi onwe ya Tụkwasị na nke ahụ, ọ ghaghị inwe ụfọdụ njide mmiri na ike njikọ, ọ dịghị ihe dị iche iche nke mmiri, ma nwee àgwà nke mkpuchi okpomọkụ na obere okpomọkụ ịrị elu.
N'ozuzu, ngwa agha na-ebuli onwe ya na-achọ ezigbo mmiri mmiri, ma mmiri nke ezigbo ciment mado na-abụkarị naanị 10-12cm;n'etiti cellulose ethers, hydroxypropyl methylcellulose (HPMC) bụ isi ihe mgbakwunye nke ngwa agha dị njikere , ọ bụ ezie na ego mgbakwunye dị nnọọ ala, ọ nwere ike ime ka arụmọrụ nke ngwa agha dịkwuo mma, ọ nwere ike imeziwanye ihe na-agbanwe agbanwe, ịrụ ọrụ na-arụ ọrụ, njikọta na mmiri. njigide arụmọrụ nke ngwa agha.Ọ na-arụ ọrụ dị oke mkpa n'ọhịa nke ngwa agha agwakọta dị njikere.
1. Mbugharị
Hydroxypropyl methylcellulose (HPMC) nwere mmetụta dị mkpa na njide mmiri, nkwụsi ike na ịrụ ọrụ nke ngwa agha na-ebuli onwe ya.Karịsịa dị ka ngwa agha na-ebuli onwe ya elu, mmiri mmiri bụ otu n'ime ihe ndị na-egosi maka ịlele arụmọrụ nke onwe.N'okpuru nhazi nke ijide n'aka na ihe mejupụtara nke ngwa agha ahụ bụ ihe nkịtị, enwere ike ịhazigharị mmiri nke ngwa agha ahụ site n'ịgbanwe ọnụọgụ HPMC.Otú ọ dị, ọ bụrụ na usoro ọgwụgwọ ahụ dị oke elu, a ga-ebelata mmiri mmiri nke ngwa agha ahụ, ya mere a ga-achịkwa usoro ọgwụgwọ HPMC n'ime oke ezi uche.
2. Njide mmiri
Ndogide mmiri nke ngwa agha bụ ihe ndeksi dị mkpa iji tụọ nkwụsi ike nke ihe dị n'ime nke ngwa ciment agwakọtara ọhụrụ.Iji mezuo mmeghachi omume hydration nke ihe gel, ihe ezi uche dị na ya nke HPMC nwere ike idowe mmiri na ngwa ngwa ogologo oge.N'ikwu okwu n'ozuzu, ọnụ ọgụgụ njide mmiri nke slurry na-abawanye site na mmụba nke ọdịnaya HPMC.Ọrụ njide mmiri nke HPMC nwere ike igbochi mkpụrụ ahụ ka ọ ghara ịmịkọrọ mmiri dị ukwuu ngwa ngwa, ma gbochie evaporation nke mmiri, iji hụ na ebe slurry na-enye mmiri zuru oke maka hydration ciment.Na mgbakwunye, viscosity nke hydroxypropyl methylcellulose nwekwara mmetụta dị ukwuu na njide mmiri nke ngwa agha.Nke dị elu nke viscosity, ka mma na-ejigide mmiri.N'ozuzu, ngwaahịa ndị nwere viscosity dị ihe dị ka 400mpa.s bụ nke a na-ejikarị eme ihe maka ngwa agha na-edozi onwe ya, nke nwere ike imeziwanye arụmọrụ nke ngwa agha ahụ ma mee ka ọnụ ọgụgụ nke ngwa agha dịkwuo elu.
3. Ịtọ oge
HPMC nwere mmetụta azụ azụ ụfọdụ na ngwa agha.Site na mmụba nke usoro onunu ogwu, a na-agbatị oge nhazi nke ngwa agha ahụ.Mmetụta azụ azụ nke HPMC na tapawa ciment na-adabere n'ogo nke nnọchi nke otu alkyl, yana enwechaghị mmekọrịta na ịdị arọ ya.Ka ogo nke nnọchi alkyl dị ntakịrị, ka ọdịnaya hydroxyl na-ebuwanye ibu, na-apụta ìhè karịa mmetụta nkwụghachi azụ.Na elu ọdịnaya HPMC, ka pụta ìhè mmetụta nke mgbagwoju film oyi akwa na mmalite hydration retardation nke ciment, otú retarding mmetụta bụkwa ihe doro anya.
4. Ike mgbanwe na ike mkpakọ
Ọtụtụ mgbe, ike bụ otu n'ime ndenye nyocha dị mkpa maka ọgwụgwọ nke ihe cimenti dabeere na ciment na ngwakọta.Ike mkpakọ na ike mgbanwe nke ngwa agha ga-ebelata site na mmụba nke ọdịnaya HPMC.
5. Bond ike
HPMC nwere mmetụta dị ukwuu na njikọta nke ngwa agha.HPMC na-emepụta ihe nkiri polymer nke nwere mmetụta mkpuchi n'etiti usoro mmiri mmiri na mmiri ciment hydration particles, nke na-akwalite ọtụtụ mmiri na fim polymer n'èzí ciment ahụ, bụ nke na-eme ka hydration zuru oke nke ciment, si otú ahụ na-eme ka mma slurry dị mma.Ike njikọ siri ike.N'otu oge ahụ, ịgbakwunye HPMC kwesịrị ekwesị na-eme ka plasticity na mgbanwe nke ngwa agha ahụ dịkwuo mma, na-ebelata ike nke mpaghara mgbanwe n'etiti ngwa agha na ihe ntanetị, ma na-ebelata ikike mmịfe n'etiti oghere.Ruo n'ókè ụfọdụ, a na-eme ka mmetụta njikọ dị n'etiti ngwa agha na mkpụrụ osisi ahụ dịkwuo mma.Na mgbakwunye, n'ihi ịdị adị nke HPMC na ciment mado, a pụrụ iche interface mgbanwe mpaghara na interface oyi akwa na-guzobere n'etiti ngwa agha ahụ na hydration ngwaahịa.Nke a interface oyi akwa na-eme ka interface mgbanwe mpaghara ọzọ mgbanwe na obere isiike.Ya mere, Mortar nwere ike njikọ siri ike.
Oge nzipu: Mar-23-2023