Kev hloov pauv ntawm cov hmoov latex cov ntsiab lus muaj kev cuam tshuam rau lub zog flexural ntawm polymer mortar.Thaum cov ntsiab lus ntawm latex hmoov yog 3%, 6% thiab 10%, lub zog flexural ntawm ya tshauv-metakaolin geopolymer mortar tuaj yeem nce 1.8, 1.9 thiab 2.9 npaug.Lub peev xwm ntawm ya tshauv-metakaolin geopolymer mortar los tiv thaiv deformation nce nrog qhov nce ntawm latex hmoov cov ntsiab lus.Thaum cov ntsiab lus ntawm latex hmoov yog 3%, 6% thiab 10%, flexural toughness ntawm ya tshauv-metakaolin geopolymer nce los ntawm 0.6, 1.5 thiab 2.2 zaug, feem.
Latex hmoov zoo txhim kho cov flexural thiab bonding tensile lub zog ntawm cov cement mortar, yog li txhim kho qhov yooj yim ntawm cov cement mortar thiab ua kom lub zog tensile zog ntawm qhov sib txuas ntawm cov cement mortar-concrete thiab cement mortar-EPS board systems.
Thaum qhov sib piv ntawm poly-ash yog 0.3-0.4, qhov elongation ntawm kev tawg ntawm polymer-hloov cement mortar dhia los ntawm tsawg dua 0.5% mus rau ze li ntawm 20%, yog li cov khoom siv tau hloov pauv los ntawm rigidity mus rau qhov yooj, thiab ntxiv cov nyiaj ntxiv. ntawm polymer tuaj yeem tau txais ntau qhov yooj yim dua.
Ntxiv cov hmoov latex hauv cov tshuaj khib tuaj yeem txhim kho qhov yooj.Thaum cov ntsiab lus polymer yog li 15%, qhov hloov pauv ntawm cov tshuaj khib nyiab hloov pauv loj heev.Thaum cov ntsiab lus siab dua cov ntsiab lus no, qhov hloov pauv ntawm cov tshuaj khib nyiab nce ntxiv nrog qhov nce ntawm cov hmoov latex.
Los ntawm bridging tawg muaj peev xwm thiab transverse deformation xeem, nws tau pom tias nrog nce latex hmoov cov ntsiab lus (los ntawm 10% mus rau 16%), qhov yooj ntawm mortar maj mam nce, thiab dynamic bridging crack peev xwm (7d) nce los ntawm 0.19mm mus rau 0.67 hli, thaum lub lateral deformation (28d) nce los ntawm 2.5mm mus rau 6.3mm.Nyob rau tib lub sijhawm, nws kuj tseem pom tau tias qhov nce ntawm cov hmoov latex hmoov tuaj yeem ua rau me ntsis nce qhov kev tawm tsam ntawm qhov dej ntawm lub mortar, thiab tuaj yeem txo cov dej nqus ntawm cov tshuaj khib nyiab.Nrog rau qhov nce ntawm latex hmoov cov ntsiab lus, lub sij hawm ntev dej tsis kam ntawm mortar maj mam txo.Thaum cov ntsiab lus ntawm cov hmoov latex hloov mus rau 10% -16%, hloov cov cement-based slurry tuaj yeem tsis tsuas yog tau txais kev yooj yim, tab sis kuj muaj cov dej ua haujlwm ntev ntev.
Nrog rau qhov nce ntawm cov latex hmoov cov ntsiab lus, cov cohesion thiab dej tuav ntawm lub mortar yog pom tseeb, thiab kev ua hauj lwm kev ua tau zoo yog optimized.Thaum cov hmoov latex nce mus txog 2.5%, kev ua haujlwm ntawm cov mortar tuaj yeem ua tau raws li kev tsim kho.Tus nqi ntawm cov hmoov latex tsis tas yuav tsum siab dhau, uas tsis tsuas yog ua rau EPS rwb thaiv tsev mortar heev ntom thiab muaj fluidity tsawg, uas tsis tsim nyog rau kev tsim kho, tab sis kuj nce nqi ntawm mortar.
Post lub sij hawm: Mar-06-2023