HPMC Maka Concrete Admixture

Hydroxypropyl Methylcellulose (HPMC) bụ ihe mgbakwunye a na-ejikarị eme ihe na ihe mgbakwunye ihe n'ihi akụrụngwa rheological ya, ikike njigide mmiri, yana ikike iji melite arụmọrụ na arụmọrụ nke ngwakọta ihe. Nke a bụ ka esi eji HPMC eme ihe n'ime ihe admixtures:

1. Njide mmiri: HPMC nwere ezigbo njide mmiri, nke pụtara na ọ nwere ike ijide mmiri n'ime ngwakọta kọmpat. Nke a na-enyere aka igbochi mmiri ozuzo ngwa ngwa, karịsịa na ọnọdụ ọkụ ma ọ bụ ikuku na-ekpo ọkụ, na-enye ohere ka mma hydration nke cement cement na imeziwanye ike na ịdịte aka nke ihe.
2. Nkwalite arụ ọrụ: HPMC na-arụ ọrụ dị ka ihe mgbanwe rheology, na-eme ka arụ ọrụ na nkwụsi ike nke ngwakọta ihe. Ọ na-enyere aka belata viscosity nke ngwakọta, na-eme ka ọ dị mfe ịgbapụta, tinye, na imecha. Nke a bara uru karịsịa maka kọmpụta na-ebuli onwe ya, mgbapụta mmiri na ngwa ebe achọrọ ọrụ dị elu.
3. Mmekọrịta dị mma na nchikota: HPMC na-eme ka njikota na nchikota nke ihe na-eme ka ọ dịkwuo mma, na-eduga n'inwe njikọ dị mma n'etiti ihe ndị dị na ya na ihe ndị na-arụ ọrụ nke ọma nke ihe siri ike. Nke a na-ebute mbelata nkewa na ọbara ọgbụgba, yana imeziwanye elu na ọdịdị elu.
4. Oge nhazi nke a na-achịkwa: Site n'ịchịkwa ọnụ ahịa hydration nke ciment, HPMC nwere ike inye aka gbanwee oge nhazi nke ngwakọta ihe. Nke a bara uru na ọnọdụ ebe a chọrọ nhazi oge ma ọ bụ ogologo oge na-arụ ọrụ, na-enye ohere maka njikwa ka mma maka ntinye na imecha ihe ahụ.
5. Ndakọrịta na Mgbakwụnye Ndị Ọzọ: HPMC dakọtara na ọtụtụ ihe mgbakwunye ihe ndị ọzọ, gụnyere ihe na-eme ka ikuku, plasticizers, superplasticizers, na set retarders. Enwere ike iji ya na mgbakwunye ndị a iji nweta ihe ndị chọrọ ịrụ ọrụ kpọmkwem na ịkwa akwa ihe onwunwe nke ihe ahụ iji gboo mkpa nke ọrụ ahụ.
6. Usoro onunu ogwu na Ngwa: The onunu ogwu nke HPMC na ihe admixtures a ranges si 0.1% ka 0.5% site arọ nke cementitious ihe, dabere na chọrọ arụmọrụ e ji mara na chọrọ nke ihe mix. A na-etinyekarị ya na ngwakọta ihe n'oge a na-agwakọta ya, ma ọ bụ dị ka ntụ ntụ akọrọ ma ọ bụ dị ka ihe ngwọta tupu agwakọta.

HPMC bụ ihe mgbakwunye dị iche iche nke na-enye ọtụtụ uru na ihe mgbakwunye kọmpụta, gụnyere arụmọrụ ka mma, njide mmiri, njikọta, nrapanye, na oge nhazi a na-achịkwa. Ojiji ya nwere ike iduga n'ịmepụta ngwakọta ihe dị elu nke nwere ike ịrụ ọrụ na ịdịte aka.