Ka paʻa ʻana o ka wai o ka HPMC i ka mortar masonry

E like me kā mākou ʻike, ʻo ke kumumanaʻo o ka hydration piha o ka sima e pono ai i ka 26% o ka nui o ka sima, a ʻo ka hoʻohana ʻana i ka wai maoli o ka mīkini i ʻoi aku ka nui o ka wai i koi ʻia no ka hydration o ka sima i loko o ka pahu, ʻo ia ka mea nui e hoʻokō i nā pono o ke kūkulu ʻana. ʻO ka ikaika o ka pōhaku sima ka mea nui e pili ana i ka ratio wai-cement pili. ʻO ka nui o ka ratio wai-cement, ʻoi aku ka nui o ka porosity o ka pōhaku sima, ʻoi aku ka haʻahaʻa o ka ikaika o ka pōhaku sima, a ʻoi aku ka ikaika o ka mortar. No laila, ʻoiai ka lōʻihi o ka hana paʻa ʻana o ka wai o ka mortar masonry e hōʻoia i ka operability o ka mortar a me ka wai e pono ai no ka hydration o ka sima i loko o ka mortar.

Inā maikaʻi loa ka paʻa ʻana o ka wai o ka pā pōhaku, ʻoi aku ka nui o ka wai maoli i mālama ʻia i loko o ka pahū, ʻoi aku ka nui o ka wai-cement ratio o ka pahu, ʻoi aku ka ikaika maoli o ka hamo, a me ka ikaika o ka paʻa. e emi iho ana. hoemi iho. Eia kekahi, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai o ka mortar, a ʻaʻole maʻalahi ka wai e ka mea poloka, e hoʻopili ai i ka hoʻopaʻa ʻana ma waena o ka slurry sima a me ka mea poloka, a hoʻolōʻihi i ka manawa hoʻonohonoho o ka mortar, a laila pili i ka wikiwiki o ka masonry a me ka hoʻonui ʻana i ka paʻakikī o ke kūkulu ʻana. No laila, ʻo ka papa kuhikuhi paʻa wai o ka mortar masonry e kūlike me ka mea o ka mea poloka.

Inā wehe ʻia ke ʻano pore o ka mea poloka, a hiki ke maʻalahi ka mea poloka i ka wai, e like me nā pōhaku i puhi ʻia, hiki ke hoʻohaʻahaʻa ʻia ka paʻa ʻana o ka wai o ka mortar masonry, a ʻoi aku ma mua o 80% hiki ke hoʻohana, e like me nā pōhaku maʻamau. puhi ʻia me ka pahū kuʻuna no ka pōhaku ʻoi loa.

Inā pani ʻia ka ʻōnaehana pore o ka mea poloka, kiʻekiʻe ka porosity, ʻaʻole maʻalahi ke komo ʻana o ka mea poloka e ka wai, a ʻaʻole ʻae ʻia ka mea poloka e hoʻoheheʻe ʻia e ka wai i ka wā o ke kūkulu ʻana, a laila pono ka paʻa ʻana o ka wai o ka mortar masonry. e hoʻonui i ka maʻamau o ka mortar e hālāwai me ka mea e pono ai no ka hydration cement. No ka laʻana, i ka hana ʻana i nā pōhaku lepo lime-sand autoclaved, inā hoʻohana ʻia ka mortar masonry me ka nui o ka mālama ʻana i ka wai o 80% e kūkulu i nā pōhaku lime-sand, ua haʻahaʻa ka paʻa ʻana o ka wai o ka mortar, a maʻalahi ka maʻemaʻe o ka mortar. ʻohi ʻia e ka lime. ʻO nā pōhaku lepo, ka hopena i ka nele nui o ka wai i koi ʻia no ka hoʻoheheʻe ʻana i ka sima i loko o nā hui mortar, no laila ʻaʻole hiki ke hana maʻamau ka hydration sima, e hōʻemi ana i ka ikaika maoli o ka mortar a me ka ikaika paʻa o ka mortar a me ka lime-sand brick. . ʻO kēia hoʻi kekahi o nā kumu e maʻalahi ai ka maʻa ʻana o ka mortar maʻamau. No laila, pono e mālama ʻia ka mālama ʻana i ka wai o ka mortar no nā pōhaku lepo ma luna o 88%.

Eia nō naʻe, inā mākou e hoʻonui i ka nui o ka paʻa ʻana o ka wai o ka mortar o nā pōhaku lepo i ʻoi aku ma mua o 95%, e paʻakikī ke komo ʻana i ka makū ma nā hui o ka mortar, e emi ana ka ikaika maoli o ka mortar, a me ka ikaika paʻa. e emi iho ana ma waena o ka pōhaku lepo a me ka pā. E hoʻemi ʻia nō hoʻi ka pahū a me nā pōhaku lepo. ʻOi aku ka maikaʻi o ka paʻa ʻana o ka wai, ʻaʻole maʻalahi nā pōhaku lepo e hoʻopili i ka mortar i ka wā o ka hana ʻana, a paʻa ka mortar, a ua kaupalena ke kiʻekiʻe o ka pā.

No laila, ʻaʻole i kiʻekiʻe ka paʻa ʻana o ka wai o ka hydroxypropyl methylcellulose i loko o ka mortar masonry e like me ka hiki, a pono e loaʻa i nā mea poloka ʻokoʻa kahi pae paʻa wai kūpono.