Ua cov mortar tshiab uas muaj dej tuav tau zoo:

Cement hydration txheej txheem yog txheej txheem qeeb, xws li cov cement tsis tuaj yeem tiv tauj nrog dej tau ntev, cov cement yuav tsis tuaj yeem txuas ntxiv hydration, yog li cuam tshuam rau kev txhim kho lub zog tom qab. Lub polymer hloov mortar muaj zog ntau dua li tus qauv tus nqi, yog vim li cas covredispersible polymer hmoovtxhim kho lub peev xwm tuav dej, kom lub zog tom qab ntawm cov cement nce. Thib ob, kev tsim cov txheej txheem me me ntawm cov polymer hauv mortar, txhim kho lub zog ntawm daim ntawv cog lus.

Txhim kho kev ua haujlwm ntawm kev tsim kho tshiab mortar:

Tom qab ntxiv redispersible polymer hmoov rau hauv qhuav sib tov mortar, lub workability ntawm mortar yog heev txhim khu kev qha, uas yog feem ntau yog vim li no: A. Thaum sib tov redispersible polymer hmoov thiab mortar, vim redispersible polymer hmoov hais yog coated los ntawm dej-soluble tiv thaiv colloid. , txheej txheej tuaj yeem tiv thaiv tsis tau rov qab coalescation ntawm cov khoom siv polymer kom muaj cov nyhuv lubrication ntawm cov khoom, cov khoom siv polymer tuaj yeem ua tau. Sib npaug sib npaug hauv qhov hnyav ntawm cov cement slurry, Cov khoom tawg no, zoo li cov pob bearings, tuaj yeem ua rau cov khoom khib nyiab ntws sib cais thiab txhim kho kev ua haujlwm ntawm mortar. B. redispersible polymer hmoov nws tus kheej muaj tej yam huab cua engendering nyhuv, redispersible polymer hmoov nyob rau hauv cov huab cua induction nyhuv yuav tsum muab mortar compressibility, thiaj li hais tias mortar muaj zoo tsim workability. Tsis tas li ntawd, lub hav zoov ntawm micro npuas kuj plays lub luag hauj lwm dov bearing hauv qhov sib tov kom txhim kho kev ua haujlwm ntawm qhov sib tov.

Redispersible polymer hmoovlos txhim kho qhov yooj thiab tawg tsis kam ntawm mortar:

Tom qabredispersible polymer hmoovNtxiv rau mortar, lub mortar compression piv thiab tensile piv tau zoo heev, uas qhia tau hais tias mortar brittleness yog heev txo, toughness yog zoo heev, thiaj li hais tias cov tawg kuj ntawm mortar yog zoo dua.redispersible polymer hmoovNyob rau hauv mortar dehydrating zaj duab xis, tsis tsuas yog ua kom tiav cov shortcomings thiab pores nyob rau hauv cement pob zeb, tab sis kuj rau cementhydration cov khoom thiab aggregate gluing rau polymer interpenetrating network, vim hais tias cov elastic modulus ntawm polymer zaj duab xis yog qis dua li ntawm mortar, yog li lub brittleness ntawm mortar. txo. Lub mortar saj zawg zog tsub kom qhov siab tshaj plaws deformation txwv ntawm mortar thaum nws puas, thiab lub zog yuav tsum tau los ntawm qhov tsis xws luag thiab micro-crack propagation yog absorbed mus rau ib tug loj npaum li cas, thiaj li hais tias mortar yuav dais ntau dua kev nyuaj siab ua ntej tsis ua hauj lwm. Tsis tas li ntawd, cov yeeb yaj kiab polymer muaj cov txheej txheem ntawm kev ncab nws tus kheej, thiab cov yeeb yaj kiab polymer tsim cov pob txha pob txha hauv cov cement hydrated mortar, uas muaj cov nyhuv txav txav tau, kom ntseeg tau tias elasticity thiab toughness ntawm cov pob txha pob txha. Muaj cov pores nyob rau saum npoo ntawm polymer zaj duab xis tsim nyob rau saum npoo ntawm mortar hais, thiab cov pores tau sau los ntawm mortar, uas txo cov kev ntxhov siab concentration thiab ua rau so tsis muaj kev puas tsuaj nyob rau hauv qhov kev txiav txim ntawm sab nraud rog. Lub hav zoov ntawm qhov yooj yim thiab siab elasticity polymer cheeb tsam kuj txhim kho qhov yooj thiab elasticity ntawm mortar.