Hydroxypropyl Methyl Cellulose muaj qee yam cuam tshuam rau lub zog ntawm cov cement mortar

Nyob rau theem pib ntawm cov cement mortar, hydroxypropyl methyl cellulose tuaj yeem txo lub zog me ntsis. Qhov no yog vim hais tias nws yuav ua rau kom cov porosity ntawm lub mortar rau ib qho twg thiab adsorb ib feem ntawm cov dej, yog li cuam tshuam rau lub cev hydration tshuaj tiv thaiv txheej txheem ntawm cov cement thiab cuam tshuam txoj kev loj hlob ntawm lub zog thaum ntxov mus rau ib qho twg.

1. Kev cuam tshuam ntev

Nyob rau lub sijhawm ntev, qhov cuam tshuam ntawm hydroxypropyl methyl cellulose ntawm lub zog ntawm cov cement mortar yog qhov nyuaj dua. Ntawm qhov tod tes, nws cov dej tuav tau tuaj yeem ua kom cov cement txuas ntxiv hydrate rau lub sijhawm ntev, kom lub zog tuaj yeem tsim tau ntau dua. Ntawm qhov tod tes, nws tuaj yeem txhim kho cov qauv sab hauv ntawm lub mortar, txhim khu kev ruaj ntseg thiab kav ntev, thiab muaj kev cuam tshuam zoo rau lub zog rau qee yam.

Feem ntau, qhov cuam tshuam ntawm hydroxypropyl methyl cellulose ntawm lub zog ntawm cement mortar tsis yog ib leeg. Ntau yam yuav tsum tau txiav txim siab ua tiav, thiab kev hloov kho thiab kev tswj kom tsim nyog yuav tsum tau ua raws li cov xwm txheej tshwj xeeb hauv kev siv tiag tiag.

Hydroxypropyl methyl cellulose (HPMC) plays lub luag haujlwm tseem ceeb hauv mortar.

1. Muaj nuj nqi

Kev tuav dej

1. Nws tuaj yeem tiv thaiv cov dej hauv mortar los ntawm kev poob sai heev thiab ua kom lub mortar muaj kev tsim kho thiab kev ua haujlwm ntev. Qhov no yuav pab kom ntseeg tau tias cov mortar yuav tsis tawg thiab lub zog yuav tsis raug txo vim qhov ceev evaporation ntawm dej thaum lub sij hawm smearing, masonry thiab lwm yam txheej txheem.
2. Kev tuav dej zoo tuaj yeem tso cai rau cov cement kom muaj sij hawm txaus rau cov tshuaj tiv thaiv hydration, yog li txhim kho lub zog thiab kav ntev ntawm cov mortar.

Thickening khoom

1. Ua kom cov viscosity ntawm cov tshuaj khib kom nws yooj yim dua kom sib npaug ntawm cov smeared thaum tsim kho thiab tsis txhob sagging. Nyob rau tib lub sij hawm, lub thickened mortar tuaj yeem ua raws li lub hauv paus nto thiab txhim kho qhov adhesion.
2. Nws pab txhim kho lub sag kuj ntawm lub mortar. Tshwj xeeb tshaj yog thaum tsim cov phab ntsa ntsug lossis qab nthab, nws tuaj yeem ua kom ntseeg tau tias cov mortar yuav tsis swb vim lub ntiajteb txawj nqus.

Txhim kho kev ua haujlwm

1. Ua kom cov mortar muaj kev ua haujlwm zoo dua thiab yooj yim rau do, thauj thiab tsim. Cov neeg ua haujlwm tuaj yeem txuag kev siv zog ntau dua thaum lub sijhawm ua haujlwm thiab txhim kho kev tsim kho kom zoo.
2. Nws tuaj yeem txo qhov txaws thiab pov tseg ntawm mortar thaum tsim kho thiab ua kom lub chaw tsim kho kom huv si.

Txhim kho durability

1. Txhim khu lub Frost tsis kam thiab impermeability ntawm lub mortar. Hauv cov cheeb tsam txias, HPMC tuaj yeem tiv thaiv cov dej hauv mortar los ntawm kev khov thiab nthuav thiab rhuav tshem cov qauv; nyob rau hauv qhov chaw ntub dej, nws tuaj yeem tiv thaiv dej los ntawm permeating thiab tiv thaiv cov tsev los ntawm dej yaig.
2. Nws pab txo qis shrinkage thiab cracking ntawm mortar thiab ncua lub neej kev pab cuam ntawm lub tsev.

1. Kev ceev faj rau kev siv

Kev tswj noj tshuaj

1. Cov koob tshuaj ntawm HPMC yuav tsum tau hloov kho kom haum raws li yam xws li hom tshuaj khib, kev tsim kho thiab ib puag ncig. Feem ntau hais lus, ntau npaum li cas qis yuav tsis tuaj yeem ua nws lub luag haujlwm, thaum qhov ntau npaum li cas yuav cuam tshuam rau lub zog thiab lwm yam khoom ntawm cov tshuaj khib.
2. Hauv kev siv tiag tiag, qhov pom zoo npaum li cas tuaj yeem txiav txim siab los ntawm kev sim.

Kev sib xyaw ua ke

1. Thaum ntxiv HPMC, nws yuav tsum tau xyuas kom meej tias nws yog tag nrho nplawm tusyees kom nws tuaj yeem ua tau zoo tshaj plaws hauv cov tshuaj khib nyiab. Cov tshuab nplawm tuaj yeem siv tau, thiab lub sijhawm nplawm yuav tsum tsis txhob luv dhau.

Cia tej yam kev mob

1. HPMC yuav tsum muab cia rau hauv qhov chaw qhuav thiab qhov cua kom tsis txhob ya raws thiab tshav ntuj ncaj qha. Qhov ntsuas kub yuav tsum feem ntau tsis pub tshaj 30 ° C kom tsis txhob cuam tshuam rau nws txoj haujlwm.
2. Thaum lub sijhawm khaws cia thiab siv, yuav tsum tau saib xyuas kom tsis txhob muaj kev sib cuag nrog lwm cov tshuaj kom tsis txhob muaj kev phiv tshuaj.