Kuchengetwa kwemvura kweHPMC mune masonry mortar

Sezvo isu tose tinoziva, dzidziso yakakwana ye hydration ye simenti inoda 26% yesamende yakawanda, uye iyo chaiyo yekushandisa mvura yedhaka inopfuura zvikuru mvura inodiwa hydration ye simende mudhaka, iyo inonyanya kusangana nezvinodiwa zvekuvaka. Simba resimende dombo rinonyanya kuenderana nechiyero chemvura-simende chine hukama. Kuwanda kwereshiyo yemvura-simende, kunowedzera porosity yedombo resimende, kuderedza simba redombo resimende, uye kuderedza simba redhaka. Naizvozvo, chero bedzi kuchengetwa kwemvura kwekuita kwedhaka remasonry kunovimbisa kushanda kwedhaka uye unyoro hunodiwa pakunatswa kwesamende mudhaka.

Kana kuchengetwa kwemvura kwedhaka remasonry kwakanyanyisa, mvura chaiyo inochengetwa mudhaka ichava yakakura, iyo chaiyo yemvura-samende reshiyo yedhaka ichave yakakura, simba chairo redhaka richave rakaderera, uye simba rezvisungo. zvichadererawo. kuderedzwa. Uye zvakare, kuchengetwa kwemvura kwedhaka kwakanyanya kunaka, uye mvura haibatike nyore nyore neyakavharika zvinhu, izvo zvinozokanganisa kubatanidzwa pakati pesimende slurry uye block material, uye kuwedzera nguva yekugadzika kwedhaka, nekudaro. kukanganisa kukurumidza kwemasonry uye kuwedzera kuoma kwekuvaka. Nokudaro, iyo indekisi yekuchengetedza mvura yemasonry mortar inofanira kuenderana neye block material.

Kana iyo pore chimiro cheiyo block material yakavhurika, uye iyo block zvinhu zvinopinda nyore nyore nemvura, senge zvidhinha zvakapiswa, kuchengetwa kwemvura kwedhaka remasonry kunogona kudzikira, uye zvinopfuura 80% zvinogona kushandiswa, senge zvidhinha zvakajairika. kusvirwa nedhaka rechinyakare rekugadzira masonry inoshanda chaizvo.

Kana iyo pore chimiro cheiyo block material yakavharwa, iyo porosity yakakwira, iyo block material haipindi nyore nemvura, kana block material haibvumidzwe kunyoroveswa nemvura panguva yekuvaka, ipapo kuchengetwa kwemvura kwedhaka remasonry kunofanira. wedzera mwando wedhaka kuti usangane nepakati Inodiwa kuti simende hydration. Semuenzaniso, mukuvakwa kweautoclaved lime-jecha zvidhinha, kana masonry dhaka ine chiyero chekuchengetedza mvura ye80% inoshandiswa kugadzira lime-jecha zvidhinha, kuchengetwa kwemvura kwedhaka kwakaderera, uye hunyoro huri mudhaka huri nyore. yakamwiwa ne lime. Zvidhinha zvejecha, zvichikonzera kushomeka kwakakomba kwemvura inodiwa kuti simende hydration mumajoini edhaka, kuitira kuti simende hydration irege kuitwa zvakajairika, ichideredza simba chairo redhaka uye kusimba kwekubatanidza kwedhaka uye lime-jecha zvidhinha. . Ichi zvakare chimwe chezvikonzero nei chinyakare masonry masonry ari nyore kupaza. Nokudaro, kuchengetwa kwemvura yedhaka yezvidhinha zvekugadzira kunofanira kudzorwa pamusoro pe88%.

Zvisinei, kana tikawedzera mvura yekuchengetedza chiyero chedhaka rezvidhinha zvekuvaka kusvika kune 95%, zvichange zvakaoma kutora unyoro pamajoini edhaka, simba chairo redhaka richaderera, uye simba rezvisungo. pakati pezvidhinha nemadziro zvichadererawo. Madhaka nezvidhinha zvichaderedzwawo. Kuchengetedzwa kwemvura kwedhaka kwakanyanyisa, zvidhinha hazvisi nyore kunamatira kune dhaka panguva yekugadzira, uye dhaka rakagadzikana, uye kukwirira kwekugadzira kunogumira.

Nokudaro, kuchengetwa kwemvura yehydroxypropyl methylcellulose mumasonry mortar haisi yakakwirira sezvinobvira, uye zvinhu zvakasiyana-siyana zvekuvhara zvinofanira kuva nemhando yakakodzera yekuchengetedza mvura.