He kuleana koʻikoʻi nā admixtures i ka hoʻomaikaʻi ʻana i ka hana o ke kūkulu ʻana i ka mortar maloʻo. Hoʻohālikelike a hoʻohālikelike kēia i nā waiwai kumu o ka pauka latexr a me ka cellulose, a me ka nānā ʻana i ka hana o nā huahana mortar maloʻo me ka hoʻohana ʻana i nā admixtures.
ʻO ka pauka latex hiki ke hoʻopuka hou ʻia
Hoʻohana ʻia ka pauka latexr redispersible e ka hoʻomaloʻo ʻana i ka emulsion polymer kūikawā. ʻO ka pauka latexr maloʻo kekahi mau ʻāpana spherical o 80 ~ 100mm i hōʻuluʻulu ʻia. Hiki ke hoʻoheheʻe ʻia kēia mau ʻāpana i ka wai a hana i kahi dispersion paʻa i ʻoi aku ka nui ma mua o nā ʻāpana emulsion mua, kahi kiʻiʻoniʻoni ma hope o ka maloʻo ʻana a me ka maloʻo.
ʻO nā ʻano hoʻololi like ʻole e loaʻa i ka pauka latex redispersible nā waiwai like ʻole e like me ke kūpaʻa wai, ke kūpaʻa alkali, ka pale ʻana i ka wā a me ka maʻalahi. ʻO ka pauka latexr i hoʻohana ʻia i ka mortar hiki ke hoʻomaikaʻi i ka pale ʻana i ka hopena, ka lōʻihi, ke kūpaʻa ʻana, ka maʻalahi o ke kūkulu ʻana, ka ikaika paʻa a me ka cohesion, ka pale ʻana i ka wā, ke kūpaʻa freeze-thaw, ka wai repellent, ka ikaika kulou a me ka ikaika flexural o ka mortar.
Cellulose etera
ʻO ka cellulose ether kahi huaʻōlelo maʻamau no nā huahana i hana ʻia e ka hopena o ka cellulose alkali a me ka etherifying agent ma lalo o kekahi mau kūlana. Hoʻololi ʻia ʻo Alkali cellulose e nā mea etherifying ʻokoʻa e loaʻa ai nā ether cellulose ʻē aʻe. Ma muli o nā waiwai ionization o nā mea pani, hiki ke hoʻokaʻawale ʻia nā cellulose ethers i ʻelua mau ʻāpana: ionic (e like me carboxymethyl cellulose) a me ka non-ionic (e like me ka methyl cellulose). Wahi a ke ʻano o ka mea pani, hiki ke hoʻokaʻawale ʻia ka cellulose ether i ka monoether (e like me ka methyl cellulose) a me ka ether i hui pū ʻia (e like me ka hydroxypropyl methyl cellulose). E like me ka like ole solubility, hiki ke maheleia i ka wai-soluble (e like me ka hydroxyethyl cellulose) a me ka organic solvent-soluble (e like me ka ethyl cellulose), etc. māhele ʻia i ke ʻano koke a me ke ʻano hoʻoheheʻe lohi i mālama ʻia ma luna.
ʻO ke ʻano o ka hana o ka cellulose ether i ka mortar penei:
(1) Ma hope o ka hoʻoheheʻe ʻia ʻana o ka cellulose ether i loko o ka mortar i ka wai, ua hōʻoia ʻia ka hāʻawi ʻana a me ka like ʻole o nā mea cementitious i loko o ka ʻōnaehana ma muli o ka hana o ka ʻili, a ʻo ka cellulose ether, ma ke ʻano he colloid pale, "wraps" i ka paʻa. particles a Hoʻokumu ʻia kahi papa lubricating kiʻiʻoniʻoni ma luna o kona ʻaoʻao i waho, kahi e hoʻoikaika ai i ka ʻōnaehana mortar, a hoʻomaikaʻi pū i ka wai o ka mortar i ka wā o ka hui ʻana. a me ka maalahi o ke kukulu ana.
(2) Ma muli o kona ʻano mole mole, ʻo ka cellulose ether solution ka wai i loko o ka mortar ʻaʻole maʻalahi e nalowale, a hoʻokuʻu mālie iā ia i kahi manawa lōʻihi, e hāʻawi ana i ka mortar me ka paʻa wai maikaʻi a me ka hana.
pulu laau
Hana ʻia ka fiber lāʻau i nā mea kanu ma ke ʻano he kumu kumu a hoʻoponopono ʻia e nā ʻenehana, a ʻokoʻa kāna hana mai ka cellulose ether. ʻO nā waiwai nui:
(1) ʻAʻole hiki ke hoʻoheheʻe ʻia i loko o ka wai a me nā mea hoʻoheheʻe, a ʻaʻole hiki ke hoʻoheheʻe ʻia i ka waika nāwaliwali a me nā haʻina kumu nāwaliwali
(2) Hoʻohana ʻia i loko o ka mortar, e uhi ʻia i loko o kahi ʻano ʻekolu-dimensional i kahi kūlana static, e hoʻonui i ka thixotropy a me ka sag kūʻē o ka mortar, a hoʻomaikaʻi i ka constructability.
(3) Ma muli o ke ʻano ʻekolu-dimensional o ka lāʻau fiber, loaʻa iā ia ka waiwai o ka "paʻa wai" i loko o ka pahu i hui ʻia, a ʻaʻole e maʻalahi a wehe ʻia ka wai i loko o ka pahu. Akā ʻaʻole i loaʻa ka wai kiʻekiʻe o ka cellulose ether.
(4) ʻO ka hopena capillary maikaʻi o ka fiber lāʻau ka hana o ka "conduction wai" i loko o ka mortar, ka mea e hoʻohālikelike ai ka ʻili a me ka makū o loko o ka mortar, a laila e hōʻemi ana i nā māwae i hana ʻia e ka shrinkage uneven.
(5) Hiki i ka pulupulu lāʻau ke hoʻemi i ke koʻikoʻi deformation o ka momi paʻakikī a hoʻemi i ka emi ʻana a me ka haki ʻana o ka mortar.
Ka manawa hoʻouna: Mar-10-2023