He aha nā ʻano like ʻole o ka mortar maloʻo? ʻO ka hoʻohana ʻana i ka pauka latex redispersible

ʻO ka mortar maloʻo maloʻo e pili ana i kahi mea granular a pauda paha i hana ʻia e ka hui kino ʻana o nā aggregates, nā mea hoʻoheheʻe inorganic, a me nā mea hoʻohui i hoʻomaloʻo ʻia a pale ʻia i kekahi ʻāpana. He aha nā mea hoʻohui maʻamau i hoʻohana ʻia no ka lepo maloʻo? Hoʻohana maʻamau ka mortar pauda maloʻo i ka sima Portland ma ke ʻano he mea sima, a ʻo ka nui o nā mea sima ma ke ʻano he 20% a 40% o ka mortar pauda maloʻo; ʻO ka hapa nui o nā hōʻuluʻulu maikaʻi he one quartz a koi i ka nui o ka hoʻomaʻamaʻa mua ʻana e like me ka hoʻomaloʻo ʻana a me ka nānā ʻana e hōʻoia i ka nui o ka nui a me ka maikaʻi e hoʻokō i nā koi o ke ʻano; I kekahi manawa ua hoʻohui pū ʻia ka lehu lele, ka pauka palaka, a me nā mea ʻē aʻe ma ke ʻano he hui hoʻohui; Hoʻohana pinepine ʻia nā mea hoʻohui i nā mea liʻiliʻi, mai ka 1% a i ka 3%, akā he hopena koʻikoʻi. Hoʻohana pinepine ʻia lākou e like me nā koi o ke ʻano huahana e hoʻomaikaʻi ai i ka hana, layering, ikaika, shrinkage, a me ke kūpaʻa hau o ka mortar.

He aha nā ʻano mea hoʻohui i hoʻohana maʻamau ʻia o ka pauka maloʻo?

ʻO ka pauka latex hiki ke hoʻopuka hou ʻia

Hiki i ka pauka latex redispersible ke hoʻomaikaʻi i kēia mau waiwai i loko o ka mortar pauka maloʻo:

① ʻO ka paʻa ʻana o ka wai a me ka hana ʻana o ka palaki hou i hui ʻia;

② Ka hana hoʻopaʻa ʻana o nā papa kumu like ʻole;

③ ʻO ka hana maʻalahi a me ka deformation o ka mortar;

④ ʻO ka ikaika a me ka pilina;

⑤ ʻAʻahu kūʻē;

⑥ ʻO ke kūpaʻa;

⑦ Paʻa (impermeability).

ʻO ka noi opauda latex hiki ke hoʻolele ʻiai loko o ka paʻipaʻi paʻipaʻi ʻāpana lahilahi, ka mea hoʻopaʻa tile ceramic, ka ʻōnaehana hoʻokaʻawale ʻana o ka paia o waho, a me nā mea papahele hoʻonaʻauao ponoʻī ua hōʻike i nā hopena maikaʻi.

Mea mālama wai a mānoanoa

ʻO nā mea mānoanoa hoʻopaʻa waicellulose ethers, starch ethers, etc. ʻO ka cellulose ether i hoʻohana ʻia i ka mortar pauka maloʻo ka nui o ka methyl hydroxyethyl cellulose ether (MHEC) a me ka hydroxypropyl methyl cellulose ether (HPMC).

Mea hoemi wai

ʻO ka hana maʻamau o nā mea hoʻohaʻahaʻa wai e hōʻemi i ka koi wai o ka mortar, a laila e hoʻomaikaʻi ai i kona ikaika compressive. ʻO nā mea hoʻohaʻahaʻa wai nui i hoʻohana ʻia i ka mortar pauka maloʻo he casein, naphthalene based water reducing agent, melamine formaldehyde condensate, a me polycarboxylic acid. He superplasticizer maikaʻi loa ʻo Casein, ʻoi aku ka nui o ka mortar layer thin, akā ma muli o kona ʻano kūlohelohe, ke loli pinepine kona ʻano a me ke kumukūʻai. Naphthalene series wai hoemi wai hoʻohana mau i ka β- Naphthalenesulfonic acid formaldehyde condensate.

Coagulant

ʻElua ʻano coagulants: accelerator a me retarder. Hoʻohana ʻia nā mea hoʻolalelale e hoʻolalelale i ka hoʻonohonoho ʻana a me ka paʻakikī o ka mortar, a hoʻohana nui ʻia ka calcium formate a me ka lithium carbonate. Hiki ke hoʻohana ʻia ka alumina a me ka sodium silicate ma ke ʻano he mea wikiwiki. Hoʻohana ʻia ka retarder e hoʻolōʻihi i ka hoʻonohonoho ʻana a me ka paʻakikī o ka pahū, a ua hoʻohana maikaʻi ʻia ka waika tartaric, ka waikawa citric a me kāna mau paʻakai, a me ka gluconate.

ʻAikini pale wai

Hoʻokomo nui ʻia nā mea hoʻoheheʻe wai i nā pūhui polymer e like me ka hao chloride, nā pūhui silane organik, nā paʻakai ʻakika momona, nā fiber polypropylene, a me ka styrene butadiene rubber. ʻO ka mea hoʻoheheʻe wai ʻo Iron chloride he hopena wai maikaʻi ia, akā hiki ke hoʻopōʻino i nā pahu kila a me nā ʻāpana metala. ʻO nā paʻakai calcium insoluble i hana ʻia e ka hopena o nā paʻakai ʻakika momona me nā ion calcium i ka waiho ʻana o ka sima ma nā paia o nā capillaries, e pāʻani ana i kahi kuleana i ka pale ʻana i nā pores a lilo i kēia mau paia capillary tube i mau mea hydrophobic, a laila e pāʻani ana i kahi kuleana wai. ʻO ke kumu kūʻai o kēia mau huahana he haʻahaʻa, akā lōʻihi ka manawa e hoʻohui like i ka mortar me ka wai.

pulupulu

ʻO nā pulupulu i hoʻohana ʻia no ka mortar pauka maloʻo e pili ana i ka fiber glass resistant alkali, polyethylene fiber (polypropylene fiber), kiʻekiʻe-ikaika a me ka modulus kiʻekiʻe polyvinyl alcohol fiber (polyvinyl alcohol fiber),pulu laau, etc. ʻO nā mea maʻamau i hoʻohana pinepine ʻia he mau fibers polyvinyl alcohol modulus kiʻekiʻe a me nā fibers polypropylene. ʻOi aku ka maikaʻi o ka hana a me ke kumu kūʻai haʻahaʻa ma mua o nā fiber polypropylene i lawe ʻia mai ka ikaika kiʻekiʻe a me ka modulus kiʻekiʻe polyvinyl alcohol fibers. Hoʻokaʻawale ʻole ʻia nā fibers i ka sima matrix, a pili pū me ka sima e pale ai i ka hoʻokumu ʻana a me ka hoʻomohala ʻana o nā microcracks, e hana ana i ka mortar matrix paʻa, a pēlā e loaʻa ai ka hana wai a me ka hopena maikaʻi loa a me ke kūʻē ʻana. ʻO 3-19 mm ka lōʻihi.

Mea hoʻoheheʻe

I kēia manawa, ʻo ka pauka defoamers i hoʻohana ʻia i ka mortar pauka maloʻo he polyols a me polysiloxanes. ʻAʻole hiki i ka hoʻohana ʻana o nā defoamers ke hoʻoponopono wale i ka ʻike o ka bubble, akā e hōʻemi hoʻi i ka shrinkage. I nā noi kūpono, i mea e hoʻomaikaʻi ai i ka hana piha, pono e hoʻohana ʻia nā mea hoʻohui he nui i ka manawa like. I kēia manawa, pono e hoʻolohe i ka manaʻo like ʻole ma waena o nā mea hoʻohui like ʻole. Eia kekahi, pono e hoʻolohe i ka nui o nā mea hoʻohui. He liʻiliʻi loa e hōʻike i ka hopena o nā mea hoʻohui; Nui loa, aia paha nā hopena ʻaoʻao.