Hiki i ka Hydroxypropyl methylcellulose HPMC ke hoʻomaikaʻi nui i ka paʻa ʻana o ka wai o ka mortar. Ke 0.02% ka nui o ka hoʻohui ʻana, e hoʻonui ʻia ka nui o ka paʻa ʻana o ka wai mai 83% a i 88%; ʻo ka nui o ka hoʻohui ʻana he 0.2%, ʻo 97% ka nui o ka paʻa ʻana o ka wai. I ka manawa like, ʻo kahi liʻiliʻi o HPMC e hōʻemi nui ana i ka stratification a me ka bleeding rate 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, he mea maikaʻi loa ia no ka like ʻana o ka maikaʻi o ke kūkulu ʻana i ka mortar.
Eia nō naʻe, he hopena maikaʻi ʻole ko ka hydroxypropyl methylcellulose HPMC i ka ikaika flexural a me ka ikaika compressive o ka mortar. Me ka hoʻonui ʻia o ka nui o ka HPMC i hoʻohui ʻia, e emi mālie ana 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 mua o 0.1%, piʻi ka ikaika tensile o ka mortar me ka hoʻonui ʻia o ka dosage HPMC. Ke ʻoi aku ka nui ma mua o 0.1%, ʻaʻole e hoʻonui nui ʻia ka ikaika tensile. Hydroxypropyl Methyl
Hoʻonui pū ka Cellulose HPMC i ka ikaika o ka hoʻopaʻa ʻana o ka mortar. Ua hoʻonui ka 0.2% HPMC i ka ikaika o ka hoʻopaʻa ʻana o ka mortar mai 0.72 MPa a i 1.16 MPa.
Ua hōʻike ʻia nā haʻawina e hiki i ka HPMC ke hoʻolōʻihi nui i ka manawa wehe o ka mortar, i mea e emi nui ai ka nui o ka mortar e hāʻule ana, he mea maikaʻi loa ia no ke kūkulu ʻana i nā tile. Ke hui ʻole ʻia ka HPMC, ua emi ka ikaika o ka mortar mai 0.72 MPa a i 0.54 MPa ma hope o 20 mau minuke, a ʻo ka ikaika o ka mortar me 0.05% a me 0.1% HPMC e lilo i 0.8 MPa a me 0.84 MPa ma hope o 20 mau minuke. Ke hui ʻole ʻia ka HPMC, ʻo ka paheʻe o ka mortar he 5.5mm. Me ka hoʻonui ʻia o ka nui o ka HPMC, e emi mau ana ka paheʻe. Ke 0.2% ka nui, ua emi ka paheʻe o ka mortar i 2.1mm.
Ka manawa hoʻouna: Malaki-03-2022