Ihe a na-ejikarị poluble polmer na-agbanyekarị na ihe eji eme ụlọ. Ọ na-ekere òkè na imezi mmiri ciment na igbu oge mmeghachi omume hydreration. Na usoro hydration nke ciment, hemsc nwere ụfọdụ mmetụta na mmeghachi omume hydration na arụmọrụ ciment.
1. Njirimara Njirimara nke hemsc
Hems bụ polymer kpụrụ site na mgbanwe kemịkal nke sellose eke. Ihe owuwu ya nwere ihe abuo, hydroxyethyl na methyl, nke na - eme ka o nwee ezigbo sonubility, ike mgbanwe ndabara na ihe ndi ozo. Dị ka nkwanye ugwu nke ciment, hemsc nwere ike ime ka ọ dị omimi, arụmọrụ owuwu, ma nwee ike imeziwanye ike na ịdị ogologo mgbe ike.
2. Mmetụta nke hemsc na ciment hydration usoro
Hydration hydration bụ usoro ciment na mmeghachi omume mmiri. Site n'oge mmeghachi omume a, ciment Tame ji nwayọọ nwayọọ na-eme ka cent matriks siri ike. Dị ka nkwanye ugwu, hemsc nwere ike igwu egwu dị iche iche na ciment hydration usoro. Ihe mmetụta ụfọdụ dị ka ndị a:
2.1 melite ọnya ciment slurry
Na mmalite nke ciment hydration, mmiri ciment slurry dara ogbenye, nke a nwere ike imetụta n'oge owuwu. Hems nwere ike ime ka ihe dị iche iche na-agagharị nke ciment n'ihi viscosity ya dị elu na ezigbo ndọtị mmiri. Ọ na-agbasa ihe ndị na-akụda mmụọ ma belata nchịkọta n'etiti ciment, si otú ahụ na-eme ka ọ dịkwuo nkọ nke ciment, na-eme ka ọ dịrị mfe ịrụ ọrụ ma wụsa ya n'oge owuwu.
2.2 igbu oge na-egbu oge mmeghachi omume hydegration
Ndị otu Hydroxyethyl na hempc nwere hydrophilicy siri ike. Ọ nwere ike mepụta ihe nkiri hydration n'elu ciment, na-agbada ngwa ngwa kọntaktị n'etiti irighiri ihe ciment na mmiri, si otú ahụ gbuo oge hydration usoro ciment. Mmetụta oge a na-egbu oge dị ezigbo mkpa na ọnọdụ okpomọkụ ma ọ bụ owuwu ngwa ngwa. Ọ nwere ike gbochie mmepe ike atụmatụ kpatara site na ịba ụba na-enweghị atụ nke ciment, ma nwee ike ịgbatị oge owuwu iji zere nsogbu ihicha n'oge.
2.3 Me ka nkwụsi ike nke ciment slurry
N'oge usoro hydration nke ciment slurry, hems nwere ike ime ka nkwụsi ike nke slurry. Ndị otu Hydyythyl na methy na hemple modekule nwere ike imekọrịta ciment site na Hydrogen Bonds na Van Der Waals ka ịhazi ụlọ ahịa siri ike. Nkwụsi ike a na-enyere aka igbochi esemokwu na ebe a na-adọwa, si otú a na-eme ka ịdị n'otu ciment came ma hụ nkwụsi ike nke usoro hydration.
2.4 meziwanye microscure nke ngwaahịa hyderation
Hems nwere ike ime ka ngwaahịa hydracration ciment site na idozi ụdị mmiri na ndapụta ciment. Dịka ọmụmaatụ, na mgbe e mesịrị ọkwa nke ciment hydration, hemsc nwere ike imetụta nguzobe na nkesa nke ngwaahịa hyderation na ciment calte siltium silium (Csh) silium. N'oge ciment hydrotion usoro, nguzobe CSH GEL bu ihe di nkpa iji kpebie ike na ogologo nke ciment. Hems nwere ike ịkwalite nkesa nke CSH ma melite njupụta na ike nke ciment site na idozigharị ion na mmeghachi omume cydreration.
Mmetụta 2.5 na ike ciment
Mmetụta nke hemsc na ike ciment na usoro hydration. Na mmalite nke ciment hydration, mmalite nke ciment nwere ike ibelata obere n'ihi nsonaazụ na-akwụ ụgwọ nke hemsc. Agbanyeghị, dị ka ciment hydration na-aga n'ihu, Hems nwere ike inye aka mepụta usoro deser cencer, si otú a na-eme ka elu ike nke ciment n'oge ogologo oge. Ke adianade dosc nwere ike ime ka ihe mgbaze na-eguzogide ciment, mee ka enweghi ike nke cence ciment, ma meziwanye ogologo nke ciment.
3. Mmetụta ndị ọzọ nke hemsc na ciment
Na mgbakwunye na nsonaazụ ae kwuru n'elu na usoro ciment hydration, hemc nwekwara ụfọdụ mmetụta na Njirimara ndị ọzọ nke ciment, tumadi gụnyere:
3.1 Melite mmegide ntu oyi na adighi nma nke ciment
Hems nwere ike ime ka microsrocure ciment, ka o nwee ike iwepụta matriks ciment n'oge usoro hydration. Ihe owuwu a nwere ike belata apịrị ọnụ n'ime ciment ahụ, si otú a melite nguzogide na enweghị ike nke ciment. N'okpuru ọnọdụ ihu igwe dị egwu, nguzogide ntu oyi na ezughị oke nke cence ciment dị oke mkpa ruo na nkwụsi ike nke ụlọ.
3.2 Kwalite nguzogide cent
Ebe ọ bụ na heshc na-eme ka njupụta ciment, ọ nwekwara ike belata ọnụnọ nke pores n'ime ciment, gas ma ọ bụ kemịkalụ, ma si otú ahụ ka mma iguzogide corrosion. Karịsịa na gburugburu ebe mmiri ma ọ bụ acid-na acid, hemc nwere ike inye aka gbasa ndụ nke ụlọ ọrụ ciment.
4. Ego na mmetụta nke hempc
Mmetụta nke ọnụọgụ nke hems na ciment hydration usoro bụ ihe dị mkpa. N'ikwu okwu n'ozuzu, a ga-agbanwekwa nke hemps agbakwunyere dịka mkpa dị n'ezie. Oke ikuku nwere ike ibute ciment slurry iji nwee nguzosi ike ma na-emetụta oke ihe owuwu; Ọ bụ ezie na mgbakwunye ezughi oke nwere ike ịrụ ọrụ ya kpamkpam na imezi arụmọrụ nke ciment. Ọtụtụ mgbe, ọnụọgụ nke hemsc kwukwara na ciment bụ 0.2% na 1.0% (site na ciment Static), na nke a ga-ekpebisi ike dị ka ụdị ciment dị iche iche ma jiri gburugburu ciment dị iche iche.
Dịka ciment na-etinye ọrụ dị mkpa n'ịziwanye mmiri ciment, na-egbu oge ciment hydration usoro, ma na-emezi microcture na ike nke ciment. Ojiji nke ezi uche nwere ike melite arụmọrụ nke ciment ruo oge, karịsịa na-eme ka ọrụ ọrụ nke ciment, ma na-akwalite ike na ịdịgide nke ike ciment. Agbanyeghị, ọnụọgụ nke hemsc ejiri ya gbanwee dịka ọnọdụ dị adị iji hụ na arụmọrụ kachasị mma. N'ụlọ arụ ọrụ, ngwa nke hemsc ga-enyere aka melite ogo na ịdị ogologo nke ngwaahịa ciment.
Oge post: Feb-15-2025