Hiki i ka Hydroxypropyl methylcellulose HPMC ke hoʻomaikaʻi nui i ka paʻa ʻana o ka wai o ka pahū.Ke 0.02% ka huina hoonui, e hoonuiia ka nui o ka paa ana o ka wai mai 83% a i 88%;ʻO ka helu hoʻohui he 0.2%, ʻo ka nui o ka mālama ʻana i ka wai he 97%.I ka manawa like, ʻo kahi helu liʻiliʻi o ka HPMC e hoʻemi nui i ka stratification a me ke kahe koko o ka mortar, e hōʻike ana ʻaʻole hiki i ka HPMC ke hoʻomaikaʻi wale i ka paʻa ʻana o ka wai o ka mortar, akā hoʻomaikaʻi nui hoʻi i ka cohesiveness o ka mortar, ʻo ia hoʻi. maikaʻi i ka like ʻole o ka maikaʻi o ke kūkulu ʻana i ka mortar.
Eia nō naʻe, he hopena maikaʻi ʻole ka hydroxypropyl methylcellulose HPMC i ka ikaika flexural a me ka ikaika compressive o ka mortar.Me ka hoʻonui ʻana i ka nui o ka HPMC, e emi mālie ka ikaika flexural a me ka ikaika compressive o ka mortar.I ka manawa like, hiki i ka HPMC ke hoʻonui i ka ikaika tensile o ka mortar.Ke emi ka nui o ka HPMC ma lalo o 0.1%, piʻi ka ikaika tensile o ka mortar me ka piʻi ʻana o ka helu HPMC.Ke ʻoi aku ka nui ma mua o 0.1%, ʻaʻole e piʻi nui ka ikaika tensile.Hydroxypropyl Methyl
Hoʻonui pū ka Cellulose HPMC i ka ikaika paʻa o ka mortar.Ua hoʻonui ka 0.2% HPMC i ka ikaika paʻa o ka mortar mai 0.72 MPa a i 1.16 MPa.
Ua hōʻike nā haʻawina e hiki i ka HPMC ke hoʻolōʻihi i ka manawa wehe o ka mortar, no laila e hoʻemi nui ʻia ka nui o ka hāʻule ʻana o ka mortar, he mea maikaʻi loa ia no ke kūkulu ʻana i nā tile.Ke hoʻohui ʻole ʻia ka HPMC, hoʻemi ʻia ka ikaika paʻa o ka mortar mai 0.72 MPa a i 0.54 MPa ma hope o 20mins, a ʻo ka ikaika paʻa o ka mortar me 0.05% a me 0.1% HPMC e hoʻokaʻawale i 0.8 MPa a me 0.84 MPa ma hope o 20mins.Ke hoʻohui ʻole ʻia ka HPMC, ʻo 5.5mm ka pahū o ka mortar.Me ka hoʻonui ʻana o ka ʻike HPMC, e emi mau ana ka paheʻe.I ka 0.2% o ka dosage, e hoʻemi ʻia ka paheʻe o ka mortar i 2.1mm.
Ka manawa hoʻouna: Mar-03-2022