Mmetụta Emulsion ntụ ntụ na-agbanwe agbanwe na Slurry Structure

Uzuzu latex redispersible bụ ihe a na-ejikarị gelling organic enwetara site na ịsasa polymer emulsion na mmanya polyvinyl dị ka colloid nchebe. Enwere ike ịgbasa ya ọzọ na mmiri ka ọ bụrụ emulsion mgbe ọ zutere mmiri. Ịtinye uzuzu latex na-agbanwe agbanwe nwere ike melite arụmọrụ nke ngwa ngwa ciment agwakọtara ọhụrụ.

Ozugbo ihe simenti agbakwunyere na mmiri latex ntụ ntụ na-ejikọta mmiri, mmeghachi omume hydration na-amalite, na calcium hydroxide ngwọta ngwa ngwa na-erute saturation na kristal na-ebuli, ma n'otu oge ahụ, a na-emepụta kristal ettringite na calcium silicate hydrate gels. A na-edobe ihe ndị siri ike na gel na akụkụ ciment na-adịghị edozi. Ka mmeghachi omume hydration na-aga n'ihu, ngwaahịa hydration na-abawanye, na ihe ndị na-emepụta polymer na-eji nwayọọ nwayọọ na-agbakọta na pores capillary, na-emepụta akwa akwa akwa akwa n'elu gel na n'elu cement na-adịghị edozi. Ihe nchịkọta polymer gbakọtara jiri nwayọọ nwayọọ na-ejupụta pores, ma ọ bụghị kpamkpam n'ime ime nke pores. Ka mmiri na-ebelata site na hydration ma ọ bụ ihicha, ihe ndị ahụ polymer juru n'ọnụ na gel na pores na-ejikọta n'ime ihe nkiri na-aga n'ihu, na-emepụta ngwakọta na-ejikọta ya na ciment cement hydrated ma na-eme ka hydration na-ejikọta ngwaahịa na nchịkọta.

N'ihi na ngwaahịa hydration na polymers na-etolite oyi akwa mkpuchi na interface, ọ nwere ike imetụta uto nke ettringite na kristal calcium hydroxide na-enweghị isi; na n'ihi na ndị polymer na-agbakọta n'ime ihe nkiri na pores nke mpaghara mgbanwe interface, ihe ndị dabeere na ciment polymer Mpaghara mgbanwe dị njọ. Ndị otu na-arụ ọrụ na ụfọdụ mkpụrụ ndụ polymer ga-emepụta mmeghachi omume na-ejikọta ya na Ca2 + na A13 + na ngwaahịa hydration ciment iji mepụta njikọ akwa pụrụ iche, melite nhazi anụ ahụ nke ihe ndị dabeere na ciment siri ike, belata nrụgide dị n'ime, ma belata ọgbọ nke microcracks.

Ka usoro ciment gel na-etolite, a na-eri mmiri ahụ ma na-eji nwayọọ nwayọọ na-emechi ihe ndị ahụ polymer na pores. Ka simenti na-agbakwu mmiri, mmiri dị na pores capillary na-ebelata, na ihe ndị ahụ polymer na-agbakọta n'elu nke ngwaahịa ciment hydration gel / unhydrated cement particle ngwakọta na mkpokọta, si otú ahụ na-etolite na-aga n'ihu na-akpachi anya oyi akwa na nnukwu pores jupụtara. na nnyapade ma ọ bụ onwe-nrapado ụmụ irighiri ihe.

The chụgara emulsion nke redispersible latex ntụ ntụ nwere ike na-etolite a mmiri-adịghị ike na-aga n'ihu film (polymer netwọk ahụ) mgbe ihicha, na nke a ala na-agbanwe modulus polymer netwọk ahụ nwere ike melite arụmọrụ nke ciment; N'otu oge ahụ, na polymer molecule Ụfọdụ polar dị iche iche na simenti na-emeghachi omume chemically na ciment hydration ngwaahịa na-emepụta àkwà mmiri pụrụ iche, melite nhazi anụ ahụ nke ciment hydration ngwaahịa, na ibelata ma belata ọgbọ nke cracks. Mgbe agbakwunyere uzuzu latex redispersible, mmalite hydration nke ciment na-ebelata, ihe nkiri polymer nwere ike kechie akụkụ ciment ma ọ bụ kpamkpam, nke mere na ciment nwere ike ịmịcha ya nke ọma na ihe dị iche iche nwere ike imeziwanye ya.