Ka hopena o ka pauka latex ma ke ʻano o nā mea hana sima

I ka manawa koke e hoʻopili ai ka mea sima i hoʻohui ʻia me ka pauka latex i ka wai, hoʻomaka ka hopena hydration, a hiki koke ka hopena calcium hydroxide i ka saturation a hoʻoulu ʻia nā kristal, a i ka manawa like, hoʻokumu ʻia nā kristal ettringite a me nā gels hydrate calcium silicate. Hoʻokomo ʻia nā ʻāpana paʻa ma luna o ka gel a me nā ʻāpana sima i hoʻomaʻū ʻole ʻia. I ka hoʻomau ʻana o ka hopena hydration, hoʻonui ʻia nā huahana hydration, a hōʻuluʻulu mālie nā ʻāpana polymer i loko o nā pores capillary, e hana ana i kahi papa i hoʻopaʻa nui ʻia ma ka ʻili o ka gel a ma luna o nā ʻāpana sima i hoʻomaʻū ʻole ʻia.

Hoʻopiha mālie nā ʻāpana polymer i hōʻuluʻulu ʻia i nā pores, akā ʻaʻole i piha loa i ka ʻili o loko o nā pores. Ke hoʻemi hou ʻia ka wai e ka hydration a i ʻole ka maloʻo ʻana, hui pū nā ʻāpana polymer i hoʻopaʻa pono ʻia ma ka gel a ma nā pores i loko o kahi kiʻiʻoniʻoni hoʻomau, e hana ana i kahi hui interpenetrating me ka hydrated cement paste a hoʻomaikaʻi i ka hydration Bonding o nā huahana a me nā aggregates. No ka mea, ʻo nā huahana hydration me nā polymers e hana i kahi papa uhi ma ka interface, hiki ke hoʻopilikia i ka ulu ʻana o ka ettringite a me nā kristal calcium hydroxide coarse; a no ka mea, ʻo nā polymers e hoʻopili i nā kiʻiʻoniʻoni i loko o nā pores o ka interface transition zone, ʻoi aku ka denser o nā mea polymer-based cement. ʻOi aku ka denser o ka transition zone. E hana pū nā hui hana i loko o kekahi mau mole polymer i nā hopena cross-linking me Ca2+ a me A13+ i nā huahana hydration cement e hana i nā pilina alahaka kūikawā, hoʻomaikaʻi i ke ʻano kino o nā mea paʻakikī i hoʻokumu ʻia i ka sima, hoʻomaha i ke kaumaha o loko, a hoʻemi i ka hana ʻana o nā microcracks. I ka ulu ʻana o ke ʻano gel cement, ua pau ka wai a ua hoʻopaʻa mālie ʻia nā ʻāpana polymer i loko o nā pores. I ka hoʻomaʻū hou ʻia ʻana o ka sima, emi iho ka makū i loko o nā pores capillary, a hōʻuluʻulu ʻia nā ʻāpana polymer ma luna o ka ʻili o ka hui ʻāpana sima gel/unhydrated cement product a me ka aggregate, a laila e hana ana i kahi papa paʻa mau me nā pores nui i piha i nā ʻāpana polymer sticky a i ʻole self-adhesive.

Hoʻomalu ʻia ke kuleana o ka pauka latex redispersible i loko o ka mortar e nā kaʻina hana ʻelua o ka hydration sima a me ka hoʻokumu ʻana o ka ʻili polymer. Hoʻopau ʻia ka hoʻokumu ʻana o ka ʻōnaehana hui o ka hydration sima a me ka hoʻokumu ʻana o ka ʻili polymer i 4 mau ʻanuʻu:

(1) Ma hope o ka hui ʻia ʻana o ka pauka latex redispersible me ka sima sima, ua hoʻopuehu like ʻia i loko o ka ʻōnaehana;

(2) Ua waiho ʻia nā ʻāpana polymer ma luna o ka ʻili o ka hui ʻana o ka gel hydration product cement/unhydrated cement particle;

(3) Hoʻokumu nā ʻāpana polymer i kahi papa hoʻopaʻa mau a paʻa;

(4) I ka wā o ke kaʻina hana hydration sima, hōʻuluʻulu nā ʻāpana polymer i hoʻopaʻa pono ʻia i loko o kahi kiʻiʻoniʻoni hoʻomau, e hoʻopaʻa ana i nā huahana hydration e hana i kahi ʻano pūnaewele piha.

Hiki i ka emulsion i hoʻopuehu ʻia o ka pauka latex redispersible ke hana i kahi kiʻiʻoniʻoni hoʻomau wai ʻole (kino pūnaewele polymer) ma hope o ka maloʻo ʻana, a hiki i kēia kino pūnaewele polymer modulus haʻahaʻa elastic ke hoʻomaikaʻi i ka hana o ka sima; i ka manawa like, i loko o ka molekole polymer. Hoʻopili kemika kekahi mau hui polar i loko o ka sima me nā huahana hydration sima e hana i nā alahaka kūikawā, hoʻomaikaʻi i ke ʻano kino o nā huahana hydration sima, a hōʻoluʻolu a hoʻemi i ka hana ʻana o nā māwae. Ma hope o ka hoʻohui ʻia ʻana o ka pauka latex redispersible, lohi ka nui o ka hydration mua o ka sima, a hiki i ka kiʻiʻoniʻoni polymer ke ʻōwili hapa a piha paha i nā ʻāpana sima, i hiki ai ke hoʻomaʻū piha ʻia ka sima a hiki ke hoʻomaikaʻi ʻia kona mau waiwai like ʻole.

He mea nui ka pauka latex hiki ke hoʻoheheʻe hou ʻia ma ke ʻano he mea hoʻohui i ka mortar kūkulu. ʻO ka hoʻohui ʻana i ka pauka latex hiki ke hoʻoheheʻe hou ʻia i loko o ka mortar hiki ke hoʻomākaukau i nā huahana mortar like ʻole e like me ka tile adhesive, thermal insulation mortar, self-leveling mortar, putty, plastering mortar, decorative mortar, jointing agent, repair mortar a me nā mea sila wai ʻole, a pēlā aku. ʻO ka laulā o ka noi a me ka hana noi o ka mortar kūkulu. ʻOiaʻiʻo, aia nā pilikia hoʻololi ma waena o ka pauka latex hiki ke hoʻoheheʻe hou ʻia a me ka sima, nā mea hoʻohui a me nā mea hoʻohui, pono e hāʻawi ʻia ka nānā kūpono i nā noi kikoʻī.