RDP rau qhuav mix mortar

Qhuav mix mortar yog ib hom granular thiab hmoov sib tov ntawm nplua aggregate thiab inorganic cementing cov ntaub ntawv, dej-tuav thickening khoom, dej-txo tus neeg saib xyuas, anti-cracking tus neeg saib xyuas, defoaming tus neeg saib xyuas thiab lwm yam additives sib tov tusyees nyob rau hauv ib tug tej yam kev faib ua feem. Nws raug thauj mus rau qhov chaw ntawm qhov chaw los ntawm lub tsheb tshwj xeeb tank tsheb lossis lub hnab ntim cov ntawv ntim dej, thiab tov nrog dej. Tam sim no ntxiv rau cov cement thiab xuab zeb nyob rau hauv ib tug loj tus naj npawb ntawm qhuav mix mortar, ntau npaum li cas yog redispersible redispersible.Polymer hmoov RDP. Vim tias nws cov nqi siab thiab muaj txiaj ntsig zoo ntawm cov khoom khib nyiab, nws yog qhov tseem ceeb ntawm tib neeg cov xim. Kev cuam tshuam ntawm redispersiblePolymer hmoov RDPntawm cov khoom ntawm mortar tau tham hauv daim ntawv no.

1 Txoj Kev Xeem

Txhawm rau txiav txim siab qhov cuam tshuam ntawm redispersiblePolymer hmoov RDPCov ntsiab lus ntawm polymer mortar zog, Ob peb pawg ntawm formulations tau tsim los ntawm orthogonal xeem txoj kev thiab kuaj raws li dbjoi-63-2002, qhov zoo soj ntsuam Standard ntawm polymer mortar rau sab nrauv rwb thaiv tsev ntawm sab nrauv phab ntsa, los txiav txim lub zog ntawm polymer mortar ntawm lub tensile Daim ntawv cog lus lub zog, compressive shear bond lub zog thiab lub zog compressive, flexural zog thiab flexural piv ntawm polymer mortar ntawm qhob puag.

Cov khoom siv tseem ceeb yog P-04 2.5-pu silicon cement; RE5044 thiab R1551Z tuaj yeem rov ua dua thiab rov faib cov emulsion hmoov; 70-140 mesh quartz xuab zeb; Lwm yam additives.

2 Kev cuam tshuam ntawm redispersiblePolymer hmoov RDPntawm cov khoom ntawm polymer mortar

2.1 Tensile bond thiab compression shear bond zog

Nrog kev nce ntawm redispersiblePolymer hmoov RDPCov ntsiab lus, tensile daim ntawv cog lus lub zog thiab compressive shear daim ntawv cog lus lub zog ntawm polymer mortar thiab cement mortar kuj nce, thiab tsib nkhaus txav mus rau qhov sib npaug nrog cov ntsiab lus ntawm cov cement. Tag nrho cov ntsiab lus muaj feem cuam tshuam qhov nruab nrab, tab sis kev soj ntsuam kom muaj nuj nqis tuaj yeem cuam tshuam emulsion hmoov cov ntsiab lus ntawm qib ntawm kev cuam tshuam ntawm cov cement mortar kev ua tau zoo tuaj yeem pom tias nrog kev nce ntxiv ntawm cov khoom siv rov ua dua tshiab dispersed emulsion hmoov cov ntsiab lus ntawm kev sib txuas ntawm cov cement mortar, polymer mortar compressive shear zog. linear txoj kev loj hlob, tag nrho cov qauv rau ib tug 1% nce mus dispersePolymer hmoov RDPLub zog sib txuas tau nce los ntawm 0.2 MPa, Compression shear bond zog nce los ntawm 0.45MPA.

2.2 Compressive/bending zog ntawm mortar nws tus kheej

Nrog rau qhov nce ntawm cov ntsiab lus ntawm redispersiblePolymer hmoov RDP, lub zog compressive thiab flexural zog ntawm polymer mortar txo, qhia tias cov polymer muaj cuam tshuam rau cov dej ntawm cov cement. FIG. 4 qhia qhov cuam tshuam ntawm redispersiblePolymer hmoov RDPCov ntsiab lus ntawm compression thiab folding ratio ntawm polymer mortar. , nrog rau qhov nce ntawm cov ntsiab lus ntawm redispersiblePolymer hmoov RDP, tus kheej-compression piv ntawm polymer mortar txo, qhia tias polymer txhim kho lub toughness ntawm mortar. Kev cuam tshuam ntawm cov ntsiab lus ntawm redispersiblePolymer hmoov RDPntawm kev ua tau zoo ntawm polymer mortar tuaj yeem txheeb xyuas ntau los ntawm qhov hnyav nruab nrab ntawm txhua qhov sib txheeb. Nrog rau qhov nce ntawm cov ntsiab lus ntawm redispersiblePolymer hmoov RDP, lub zog compressive, flexural zog thiab flexural piv ntawm polymer mortar qhia ib qho kev txo qis. Lub zog compressive, flexural zog thiab flexural piv ntawm redispersiblePolymer hmoov RDPtxo los ntawm 1.21 MPa, 0.14MPa thiab 0.18 ib 1%. Nws tseem tuaj yeem pom tias vim qhov nce ntawm cov nyiaj redispersiblePolymer hmoov RDP, qhov yooj ntawm mortar tau txhim kho.

2.3 Kev soj ntsuam ntau ntawm kev cuam tshuam ntawm cov cement-xuab zeb piv rau cov khoom ntawm polymer mortar

Nyob rau hauv polymer mortar, cov cement-xuab zeb piv thiab redispersiblePolymer hmoov RDPcov ntsiab lus cuam tshuam ncaj qha rau ib leeg, yog li nws yuav tsum tau sib tham txog kev cuam tshuam ntawm cement-xuab zeb piv cais. Raws li kev sim orthogonal cov ntaub ntawv kev ua cov txheej txheem yuav txawv qhov sib txawv raws li qhov sib txawv, tawg tuaj yeem cuam tshuam nrogPolymer hmoov RDPCov ntsiab lus raws li qhov tsis tu ncua kos qhov sib txawv ntawm qhov cuam tshuam ntawm kev hloov pauv ntawm mortar kom muaj nuj nqis, tuaj yeem pom tias nrog kev nce ntawm qhov sib txawv ntawm qhov kev ua tau zoo ntawm cov cement mortar polymer mortar thiab polymer mortar kev ua tau zoo nws tus kheej yog linearly txo qis, qhov kev sib piv yog tias tensile daim ntawv cog lus lub zog ntawm polymer mortar rau cement mortar txo los ntawm 0.12MPa, compressive shear bond zog txo los ntawm 0.37MPa, lub zog compressive ntawm polymer mortar txo los ntawm 4.14MPa, lub zog flexural txo los ntawm 0.72MPa, thiab flexural piv txo los ntawm 0.270 nrog txhua qhov nce ntawm cement-xuab zeb piv

3 Kev cuam tshuam ntawm redispersiblePolymer hmoov RDPntawm tensile bonding ntawm polymer mortar thiab EPS ua npuas ncauj polystyrene board DB JoI-63-2002 tus qauv qhia hais tias kev sib txuas ntawm polymer mortar rau cement mortar thiab EPS board yog contradictory.

Cov qub yuav tsum tau cov polymer mortar kom nruj, thaum lub sij hawm tom kawg yuav tsum tau nws yooj yim mus rau siab, tab sis xav txog cov rwb thaiv tsev sab nrauv engineering ob qho tib si rau cov phab ntsa nruj thiab saj zawg zog EPS board, tib lub sij hawm kom ntseeg tau tias tus nqi tsis siab dhau. Yog li ntawd, qhov cuam tshuam ntawm cov ntsiab lus ntawm redispersiblePolymer hmoov RDPntawm cov khoom sib txuas yooj yim ntawm polymer mortar yog teev cais los qhia txog nws qhov tseem ceeb.

4Kev cuam tshuam ntawm hom redispersiblePolymer hmoov RDPntawm kev sib raug zoo ntawm EPS board

R5, C1, P23 hom redispersiblePolymer hmoov RDPraug xaiv los ntawm txawv teb chaws. Taiwan D2, D4 2 yam; S1, S2 2 hom 7 hom; Polystyrene board ua nyob rau hauv Beijing 18kg / lined EPS board. Raws li dbJ01-63-2002 tus qauv, lub stretch bond redispersiblePolymer hmoov RDPntawm EPS lub rooj tsavxwm tuaj yeem ua tau raws li qhov nruj thiab hloov pauv tensile daim ntawv cog lus kev ua tau zoo ntawm polymer mortar tib lub sijhawm.