Qhuav-sib xyaw mortar yog ib hom granule thiab hmoov uas sib xyaw nrog cov khoom ntxiv xws li cov khoom sib xyaw zoo thiab cov khoom siv tsis zoo, cov ntaub ntawv khaws cia thiab cov thickening, dej-txo cov neeg ua haujlwm, cov tshuaj tiv thaiv kev sib tsoo, thiab cov tshuaj defoaming nyob rau hauv ib qho kev faib ua feem tom qab. ziab thiab tshuaj ntsuam. Qhov sib tov yog thauj mus rau qhov chaw tsim kho los ntawm lub tanker tshwj xeeb lossis lub hnab ntim dej tsis zoo, thiab tom qab ntawd sib tov nrog dej. Ntxiv rau cov cement thiab xuab zeb, feem ntau siv cov tshuaj khib nyiab qhuav yog redispersible thiab redispersible polymer hmoov. Vim nws tus nqi siab thiab muaj txiaj ntsig zoo rau kev ua haujlwm ntawm mortar, nws yog qhov ua kom pom tseeb. Daim ntawv no tham txog cov nyhuv ntawm dispersible polymer hmoov ntawm cov khoom ntawm mortar.
1 Kev xeem txoj kev
Txhawm rau txiav txim siab cov txiaj ntsig ntawm cov khoom pov tseg polymer hmoov cov ntsiab lus ntawm cov khoom ntawm polymer mortar, ntau pawg ntawm cov qauv tau tsim los ntawm orthogonal test method thiab kuaj raws li tus qauv ntawm "Quality Inspection Standard of Polymer Mortar for External Wall Thermal Insulation" DBJOI- 63-2002. Nws yog siv los txiav txim siab qhov cuam tshuam ntawm polymer mortar ntawm lub zog tensile daim ntawv cog lus, compressive shear daim ntawv cog lus lub zog ntawm qhob puag thiab lub zog compressive, flexural zog thiab compression-rau-fold piv ntawm polymer mortar nws tus kheej.
Cov ntaub ntawv tseem ceeb yog P-04 2.5 zoo tib yam silica cement; RE5044 thiab R1551Z redispersible thiab redispersible latex hmoov; 70-140 mesh quartz xuab zeb; lwm yam additives.
2 Kev cuam tshuam ntawm dispersible polymer hmoov ntawm cov khoom ntawm polymer mortar
2.1 Tensile bonding thiab compression shear bonding zog
Nrog rau qhov nce ntawm cov khoom siv polymer dispersible, lub zog tensile daim ntawv cog lus thiab compressive shear daim ntawv cog lus lub zog ntawm polymer mortar thiab cement mortar kuj nce, thiab tsib curves tsiv mus nyob rau tib lub sijhawm nrog kev nce ntawm cov cement mortar. Qhov hnyav nruab nrab ntawm txhua qhov tseem ceeb tuaj yeem txheeb xyuas qhov ntsuas ntawm qhov cuam tshuam ntawm cov ntsiab lus ntawm redispersible polymer hmoov ntawm kev ua haujlwm ntawm cement mortar. Lub compressive shear lub zog qhia tau hais tias txoj kev loj hlob ntawm cov kab. Tag nrho cov qauv yog tias lub zog tensile zog nce los ntawm 0.2 MPa thiab compressive shear bond zog nce los ntawm 0.45 MPa rau txhua txhua 1% nce nyob rau hauv dispersible polymer hmoov.
2.2 Compression / folding zog ntawm mortar nws tus kheej
Nrog rau qhov nce ntawm redispersible polymer hmoov cov ntsiab lus, lub zog compressive thiab flexural lub zog ntawm polymer mortar nws tus kheej poob, qhia tias cov polymer muaj cuam tshuam rau hydration ntawm cement. Cov nyhuv ntawm dispersible polymer hmoov cov ntsiab lus ntawm compression piv ntawm polymer mortar nws tus kheej yog qhia nyob rau hauv daim duab 4., nrog rau qhov nce ntawm redispersible latex hmoov cov ntsiab lus, compression piv ntawm cov polymer mortar nws tus kheej txo, qhia tias cov polymer txhim kho lub toughness ntawm lub mortar. Qhov hnyav nruab nrab ntawm txhua qhov tseem ceeb tuaj yeem txheeb xyuas ntau npaum li cas ntawm kev cuam tshuam ntawm cov khoom siv hluav taws xob rov ua dua tshiab ntawm cov khoom siv polymer ntawm nws tus kheej. Nrog rau qhov nce ntawm redispersible polymer hmoov cov ntsiab lus, lub compressive zog, flexural zog thiab qhov indentation piv qhia tau hais tias ib tug linear txo qis. Rau txhua txhua 1% nce ntawm dispersible polymer hmoov, lub zog compressive txo los ntawm 1.21 MPa, lub zog flexural txo los ntawm 0.14 MPa, thiab compression-rau-fold piv txo los ntawm 0.18. Nws tseem tuaj yeem pom tau tias qhov hloov pauv ntawm cov tshuaj khib nyiab tau zoo dua vim qhov nce ntawm cov khoom siv hluav taws xob dispersible polymer hmoov.
2.3 Kev soj ntsuam ntau ntawm cov nyhuv ntawm cov txiv qaub-xuab zeb piv rau cov khoom ntawm polymer mortar
Nyob rau hauv polymer mortar, kev sib cuam tshuam ntawm txiv qaub-xuab zeb piv thiab redispersible polymer hmoov cov ntsiab lus ncaj qha cuam tshuam rau kev ua tau zoo ntawm mortar, yog li nws yog tsim nyog los tham txog cov nyhuv ntawm txiv qaub-xuab zeb piv. Raws li cov ntaub ntawv xeem orthogonal kev ua cov txheej txheem, sib txawv txiv qaub-xuab zeb ratios yog siv raws li qhov sib txawv, thiab cov ntsiab lus redispersible polymer hmoov yog siv los ua ib qho tseem ceeb los kos ib daim duab ntau ntawm kev cuam tshuam ntawm txiv qaub-xuab zeb piv hloov ntawm mortar. Nws tuaj yeem pom tau tias, Nrog rau qhov nce ntawm cov txiv qaub-xuab zeb piv, kev ua tau zoo ntawm polymer mortar rau cement mortar thiab kev ua tau zoo ntawm polymer mortar nws tus kheej qhia txog kev txo qis. Lub zog daim ntawv cog lus yog txo los ntawm 0.12MPa, lub compressive shear bond lub zog yog txo los ntawm 0.37MPa, lub compressive zog ntawm lub polymer mortar nws tus kheej yog txo los ntawm 4.14MPa, lub flexural zog yog txo los ntawm 0.72MPa, thiab compression-rau-fold. piv txwv yog txo los ntawm 0.270
3 Cov nyhuv ntawm redispersible latex hmoov uas muaj f ntawm lub tensile bonding ntawm polymer mortar thiab EPS foamed polystyrene board Kev sib raug zoo ntawm polymer mortar rau cement mortar thiab kev sib koom ntawm EPS board npaj los ntawm DB JOI-63-2002 tus qauv yog qhov tsis sib haum xeeb.
Cov qub yuav tsum muaj kev nruj nruj ntawm cov khoom siv polymer, thaum lub sijhawm tom kawg yuav tsum muaj kev hloov pauv siab, tab sis xav tias qhov project sab nraud thermal rwb thaiv tsev yuav tsum tau lo rau ob lub phab ntsa nruj thiab hloov tau yooj yim EPS boards, tib lub sijhawm, nws yog ib qho tsim nyog los xyuas kom meej tias tus nqi yog. tsis siab dhau. Yog li ntawd, tus sau sau cov txiaj ntsig ntawm dispersible polymer hmoov cov ntsiab lus ntawm cov khoom sib txuas ua ke ntawm polymer mortar cais los hais txog nws qhov tseem ceeb.
3.1 Kev cuam tshuam ntawm hom dispersible polymer hmoov ntawm daim ntawv cog lus lub zog ntawm EPS board
Redispersible latex hmoov raug xaiv los ntawm txawv teb chaws R5, C1, P23; Taiwanese D2, D4 2; domestic S1, S2 2, tag nrho ntawm 7; polystyrene board xaiv Beijing 18kg / EPS board. Raws li DBJ01-63-2002 tus qauv, EPS board tuaj yeem ncab thiab sib koom ua ke. Redispersible latex hmoov tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm nruj thiab yoog raws cov khoom sib txuas ntawm polymer mortar tib lub sijhawm.
Post lub sij hawm: Nov-01-2022