Feem ntau ua rau thiab cov kev daws rau Hollowing thaum siv Terrazzo Prefabricated Panels

Feem ntau ua rau thiab kev daws teeb meem rau hollowing hauv terrazzo prefabricated panels
Hollowing ntawm terrazzo prefabricated panels yog hais txog qhov tshwm sim ntawm hollowing ntawm lub vaj huam sib luag lub cev thiab lub hauv paus txheej (los yog kev sib txuas txheej) vim tsis muaj zog sib txuas. Qhov ua rau muaj ntau yam xws li cov khoom siv, kev tsim kho, thiab ib puag ncig, thiab kev kho mob yuav tsum tau ua raws li cov laj thawj. Cov hauv qab no yog ib qho kev ntsuam xyuas ntxaws:

1, Feem ntau yog vim li cas
1. Kev tuav tsis raug ntawm cov hauv paus
Cov pa phem: Lub hauv paus txheej (xws li pob zeb hauv pem teb slabs, txheej txheej) tsis tau ntxuav kom huv si, ua rau cov hmoov tshauv seem seem, roj stains, tso tawm cov neeg sawv cev, thiab lwm yam, uas ua rau tsis muaj zog adhesion ntawm cov txheej txheem thiab cov txheej txheem.
Kev tswj tsis tau dej: Yog tias lub hauv paus txheej tsis ntub dej ua ntej lossis muaj qhov nqus dej siab, cov dej noo hauv cov txheej txheem ( cement mortar) sai sai absorbed los ntawm lub hauv paus txheej thaum paving. Tom qab lub mortar poob dej, nws lub zog tsis txaus thiab nws tsis tuaj yeem ua haujlwm zoo ntawm lub rooj tsavxwm prefabricated.
Kev ua tsis zoo: Lub hauv paus txheej tsis sib npaug, thiab cov tuab ntawm cov txheej txheej tsis sib xws thaum paving - hauv zos nyias dhau (tsis muaj zog sib txuas) lossis tuab dhau (siab ntsws siab), uas tuaj yeem yooj yim ua rau hollowing.
2. Cov teeb meem zoo nrog kev tsim kho cov txheej txheem kev sib txuas
Improper material ratio: The water cement ratio of cement mortar is too high (with good fluidity but low strength), or the cement grade is too low, or the sand content is too high (>3%), ua rau lub zog tsis txaus ntawm cov txheej txheem sib txuas.
Paving tsis sib xws: Cov txheej txheem sib txuas tsis sib npaug, thiab qee qhov chaw tsis sib haum; Tsis txaus compaction thaum lub sij hawm tso ntawm prefabricated panels (xws li tsis sib npaug tapping nrog roj hmab rauj) ua rau cov huab cua seem sab hauv thiab tsim cov hollows.
Thickness tawm ntawm kev tswj: Yog tias cov txheej txheem sib txuas yog nyias dhau (<10mm), the bonding force is insufficient, and if it is too thick (>30mm), kev ntxhov siab tuaj yeem tshwm sim vim qhov shrinkage, ua rau hollowing.
3. Teeb meem nrog prefabricated panels lawv tus kheej
Tsis txaus roughness nyob rau sab nraum qab: Qhov kev sib cuag ntawm lub rooj tsavxwm prefabricated thiab cov txheej txheem sib txuas tsis tau roughened, ua rau ib tug du nto, me me qhov chaw sib txuas, thiab tsis muaj zog kev sib txhuam.
Qhov loj thiab lub zog tsis xws luag: Prefabricated panels nrog ntau qhov loj me (tsis sib haum xeeb thaum lub sij hawm thermal expansion thiab contraction) los yog tsis muaj zog (deformation nyob rau hauv load) tuaj yeem ua rau cov txheej txheem sib txuas.
4. Cov txheej txheem tsim kho tsis raug
Kev tso tsis raug: xws li tso los ntawm nruab nrab mus rau txhua sab yam tsis nruj nreem nias cov npoo; Lossis yog tias lub rooj tsavxwm tsis raug kho raws sijhawm tom qab tso (tsis muaj kev txhawb nqa ib ntus), ua rau muaj kev sib cuag tsis txaus ntawm lub rooj tsavxwm thiab cov txheej txheem sib txuas.
Tsis muaj kev saib xyuas: Lub cev qhuav dej thaum ntxov ntawm cov txheej txheem sib txuas (xws li kev saib xyuas tsis pom nyob rau hauv qhov kub thiab txias ib puag ncig), qeeb lossis txo lub zog loj hlob, thiab kev sib txuas tsis ua haujlwm.
Kev tsim kho qhov kub thiab txias: Thaum lub caij ntuj no, cov txheej txheem sib khi yog khov, cov cement tsis tuaj yeem hydrate, thiab lub zog tsis tuaj yeem tsim.
5. Cov xwm txheej ib puag ncig
Extreme temperature: The construction temperature is too high (>35 degree) lossis qis dhau (<5 ℃), which affects the cement hydration reaction and leads to insufficient strength of the bonding layer.
Cov ntsiab lus tsis zoo ntawm cov hauv paus txheej: cov txheej ntub dej tsis qhuav, thiab cov evaporation ntawm noo noo nyob rau hauv daim ntawv cog lus yog hindered tom qab paving, uas ua rau expansion kev nyuaj siab thiab ua puas daim ntawv cog lus.

2, Kev ntsuas ntsuas
1. Kev tiv thaiv kev tiv thaiv (kev tswj xyuas ua ntej)
Grassroot kev kho mob:
Ntxuav cov hmoov tshauv ntab thiab roj stains ntawm lub hauv paus txheej, moisten nrog dej huv kom txog thaum tsis muaj dej pom; Lub hauv paus du yuav tsum tau roughened (xws li siv ib tug chopping ax lossis mechanical roughening) los txhim kho adhesion.
Kho qhov flatness ntawm lub hauv paus txheej (ntsuas nrog 2m tus pas ntsuas, nrog qhov yuam kev tsawg dua lossis sib npaug li 3 hli) kom tsis txhob muaj qhov sib npaug ntawm cov txheej txheem sib txuas.
Combined txheej tswj:
Siv cov cement mortar nrog lub zog ntawm ntau dua lossis sib npaug ntawm M15, nrog rau cov dej cement piv ntawm 0.4-0.5 thiab cov xuab zeb cov ntsiab lus ntawm<3%; The thickness of the bonding layer is 10-20mm, and after paving, use a scraper to level it off.
Prefabricated board ua:
Tshawb xyuas qhov roughness ntawm sab nraub qaum, thiab yog tias nws tsis txaus, siv cov khoom siv roughening lossis siv tus neeg sawv cev interface; Tswj thaj tsam ntawm ib lub vaj huam sib luag prefabricated (yog tias tsim nyog, teeb tsa cov pob qij txha txuas nrog qhov sib nrug tsawg dua lossis sib npaug li 6m).
Environmental tswj:
Kev tsim kho kub yuav tsum nyob nruab nrab ntawm 5-35 degree, zam cov hnub los nag, cua daj cua dub, thiab ncaj qha raug kub siab; Lub hauv paus txheej txheej yuav tsum tau kho rau ntau tshaj 28 hnub thiab pw tom qab cov ntsiab lus noo noo tsawg dua 10%.
2. Txoj kev tuav lub nruas khoob
Qhov chaw me me hollowing (ib lub rooj tsavxwm lossis ib nrab):
Txiav: Siv lub tshuab marble txiav raws ntug ntawm lub nruas hollow, tsis txhob muaj kev vibration thiab nthuav dav.
Kev Tu: Tshem tawm cov txheej txheej hollow, ntxuav lub hauv paus txheej thiab sab nraub qaum ntawm lub rooj tsavxwm prefabricated (tsis muaj plua plav lossis roj stains).
Repainting: Tom qab lub hauv paus txheej yog moistened, thov cov cement slurry (los yog tus neeg sawv cev interface), nteg cov txheej txheem (cement mortar), compact thiab nias lub prefabricated board (ib tug sib npaug tapping nrog ib tug roj hmab rauj), thiab kho rau 7 hnub.
Loj cheeb tsam hollowing (ntau lub rooj tsavxwm lossis tag nrho):
Demolition thiab rov nteg: Yog hais tias lub hollow cheeb tsam loj, tag nrho cov prefabricated panels yuav tsum tau muab tshem tawm, thiab lub hauv paus txheej thiab bonding txheej yuav tsum tau reprocessed ua ntej nteg.
Txoj kev grouting (me ntsis hollowing): Laum qhov nyob rau saum npoo ntawm cov vaj huam sib luag prefabricated (sib nrug 300-500mm), txhaj cov viscosity epoxy resin lossis cov cement-based grouting khoom, sau qhov khoob khoob, thiab kaw lub qhov tom qab kho.
3. Txhim kho kev saib xyuas thiab kev lees paub
Kev Kho: Hauv 24 teev tom qab tso, npog nrog cov hnab ntim ntub dej lossis cov yeeb yaj kiab yas kom lub ntsej muag ntub, thiab khaws cia tsawg kawg 7 hnub.
Txais: Siv lub hollow nruas rauj maj mam kais, nrog lub hollow nruas npaum li cas tsawg dua los yog sib npaug li 5% (tsis suav nrog cov hollow nruas hauv zos ntawm cov ces kaum ntawm ib lub rooj tsavxwm), txwv tsis pub yuav tsum tau ua dua tshiab.
3, Cov ntsiab lus
Lub hauv paus ntawm hollowing nyob rau hauv terrazzo prefabricated panels yog "bonding tsis ua hauj lwm", uas yuav tsum tau muaj kev tiv thaiv los ntawm tsib yam: kev kho mob hauv paus, kev sib txuas txheej tswj, prefabricated vaj huam sib luag optimization, kev tsim kho technology, thiab kev tswj ib puag ncig. Thaum lub nruas twb npliag lawm, xaiv txiav thiab rov nteg lossis grouting kho raws li qhov tau hais tseg, thiab nruj me ntsis tshuaj xyuas kom zoo.