Ụbọchị nbipute: 6, Jun, 2022

Na mbụ, a na-eji admixture mee ihe naanị iji chekwaa ciment. Site na mmepe nke teknụzụ ihe owuwu, admixture aghọwo ihe bụ isi iji meziwanye arụmọrụ.

Ekele maka ndị superplasticizers, a na-eji ihe dị elu na-asọpụta, nke na-ejikọta onwe ya, ihe siri ike dị elu; ekele maka thickeners, a na-emeziwanye ihe nke ihe ndị dị n'okpuru mmiri: ekele maka ndị na-azụ azụ, oge nhazi nke ciment na-agbatị ogologo oge, ọ ga-ekwe omume ibelata nkwụsịtụ nkwụsị na ịgbatị oge ọrụ ihe owuwu: n'ihi mgbochi mgbochi, ebe na-ekpo ọkụ nke ngwọta. enwere ike wedata, ma ọ bụ nrụrụ nke ihe owuwu kristal akpụrụ akpụ agaghị eme ka mmebi na-ekpo ọkụ. Ọ ga-ekwe omume ịme ihe owuwu n'okpuru okpomọkụ na-adịghị mma.

N'ozuzu, admixtures nwere mmetụta ndị a na-emeziwanye njirimara nke ihe:

 1. Ọ nwere ike ibelata oriri mmiri nke ihe. Ma ọ bụ mee ka mmiri dị na kọmpụta na-eme ka ọ ghara ịba ụba nke mmiri.

2. Enwere ike ịhazi oge nhazi nke ihe.

3. Belata ọbara ọgbụgba na nkewa. Meziwanye arụmọrụ na nguzogide mmiri elutriation.

4. Enwere ike ibelata mfu slump. Dịkwuo pumpability nke pumped concrete.

5. Enwere ike ibelata mbelata. Ịtinye ihe na-eme mkpọtụ nwekwara ike kwụọ ụgwọ maka mbelata.

6. Igbu oge mbụ hydration okpomọkụ nke ihe. Belata ọnụ ọgụgụ ịrị elu okpomọkụ nke nnukwu ihe ma belata ihe omume nke mgbape.

7. Meziwanye ike mmalite nke ihe. Gbochie oyi n'okpuru okpomọkụ adịghị mma.

8. Mee ka ike dịkwuo mma, mụbaa nguzogide ntu oyi, enweghị ike, eyi nkwụsi ike na nguzogide corrosion.

9. Jikwaa mmeghachi omume alkali-nchịkọta. Gbochie nchara nchara ma belata mgbasa ion chloride.

10. Mere nke ihe na ihe ndị ọzọ pụrụ iche.

11. Belata ọnụọgụ viscosity nke ihe, wdg.

 Mgbe agbakwunyere admixtures na ihe, n'ihi ụdị dị iche iche, mmetụta ndị ahụ dịkwa iche iche, ọtụtụ n'ime ha bụ mmetụta anụ ahụ, dị ka adsorption n'elu cement particles na-emepụta ihe nkiri adsorption, nke na-agbanwe ike ma na-emepụta ihe dị iche iche ma ọ bụ nsị; Ebibi usoro flocculation, meziwanye nkwụsi ike nke usoro mgbasa ozi ciment, ma melite ọnọdụ nke hydration ciment: ụfọdụ nwere ike ịmepụta usoro macromolecular ma gbanwee ọnọdụ adsorption n'elu akụkụ ciment; ụfọdụ nwere ike ibelata elu erughị ala na elu ike nke mmiri, wdg: na ole na ole kpọmkwem na-ekere òkè na mmeghachi omume kemịkal na ịmepụta ogige ọhụrụ na ciment.

N'ihi na admixture nwere ike n'ụzọ dị irè melite arụmọrụ nke ihe, na nwere ezi akụ na ụba uru. A na-eji ya eme ihe n'ọtụtụ mba wee bụrụ ihe dị mkpa na kọnkịtị. Karịsịa iji ndị na-ebelata ike dị elu. Enwere ike ịgbasa irighiri ciment n'ụzọ zuru oke, oriri mmiri na-ebelata nke ukwuu, a na-ejikwa ikike ciment rụọ ọrụ nke ọma. N'ihi ya, nkume ciment dị ntakịrị, na pore Ọdịdị na microstructure nke interface ebe na-mma nke ọma, nke mere na anụ ahụ na n'ibu Njirimara nke ihe e nke ukwuu mma, ma ọ bụ mmiri impermeability, ma ọ bụ chloride ion mgbasa. , carbonization, na sulfate corrosion iguzogide. . Yana mmetụta na-eguzogide, eyi iguzogide na akụkụ ndị ọzọ dị mma karịa ihe na-enweghị admixtures, ọ bụghị nanị na-eme ka ike dịkwuo mma, melite workability. Ọ nwekwara ike melite anwụ ngwa ngwa nke ihe. Ọ ga-ekwe omume ịmepụta ihe dị elu na-arụ ọrụ dị elu na-arụ ọrụ dị elu, ike dị elu na ịdịte aka dị elu site na ịgwakọta superplasticizers.