Substrate Repair Issues: Tsim Ib Qhov Tsim Nyog Tsim Nyog Rau Cov Hlau Corner Daim Kab Xev

1.1 Tsis quav ntsej cov ntsiab cai tseem ceeb ntawm cov khoom sib xws thiab kev ua tau zoo sib xws

Xaiv cov khoom kho uas tsis sib haum nrog cov thawj substrate lub cev lub cev (xws li, lub zog, elastic modulus, shrinkage tus nqi) thiab tshuaj lom neeg xwm, xws li siv cov gypsum zoo tib yam -raws li muab tub lim rau loj - thaj chaw kho ntawm ib qho khoom ua vaj tse substrate. Qhov no yog zoo li grafting ib tug plaster limb mus rau ib tug steel ncej; ob leeg tsis tuaj yeem ua haujlwm sib koom ua ke.

1.2 Ceeb toom Risk

• Tsim ib "Patch-Style" Cov Txheej Txheem Tsis Zoo: Lub zog ntawm cov txheej txheem kho yog nyob deb tshaj li cov substrate, ua rau nws tawg thiab hmoov ua ntej nyob rau hauv kev ntxhov siab, ua rau tsis ua hauj lwm ntawm lub kaum daim kab xev thiab ua tiav txheej saum toj no.
• Shrinkage Cracking Induces Debonding: Cov ntaub ntawv sib txawv muaj ntau qhov sib txawv kom qhuav shrinkage tus nqi, yooj yim tsim shrinkage kev nyuaj siab ntawm kev kho interface, ua rau tawg thiab hollowing nyob ib ncig ntawm qhov chaw kho.
• Ntev -Lub Sij Hawm Lub Sij Hawm Tsis tuaj yeem lav: Cov ntaub ntawv tsis sib haum tuaj yeem ua rau muaj kev puas tsuaj tom qab lub caij hloov pauv vim qhov tsis sib xws ntawm thermal expansion thiab contraction lossis sib txawv ya raws.

1.3 Tswj Kev Ntsuas

1. Tsim kom muaj Dual Priority Principple of "Strength and Compatibility": Thaum xaiv cov khoom kho, lawv lub zog kawg yuav tsum yogtsis qis duathawj substrate, thiab lawv yuav tsum muaj kev sib raug zoo sib raug zoo nrog lub substrate. Rau cov pob zeb ua pob zeb, cov polymer- hloov cov cement-raws li kho mortars yuav tsum raug xaiv.

2. Tsim ib daim ntawv qhia "Material-Substrate" Matching Guide: Tsim ib lub rooj xaiv yooj yim, piv txwv li:

Qhob Substrate → Cement -raws li Kho Mortar

Aerated Block Substrate → Tshwj xeeb Lightweight Plaster / Polymer Mortar

Drywall Substrate → Gypsum -raws li Joint Filler / Kho Compound

3. Ua me me -Kev Ntsuas Kev Sib Txuas Hauv Cheeb Tsam: Rau thaj chaw tseem ceeb lossis loj - kho qhov loj, ua ib qho me me - ntsuas ntsuas ua ntej txhawm rau txheeb xyuas qhov ua tau zoo ntawm kev sib txuas. Ua raws li daim ntawv thov loj - nplai tsuas yog tom qab 24-teev daim tshev lees paub tias tsis muaj qhov khoob lossis tawg.

2.1 Ua txhaum txoj cai yooj yim ntawm cov ntaub ntawv tshawb fawb kom ncav cuag cov sijhawm

Kho cov ntaub ntawv (tshwj xeeb yog cov cement{0}}raws li) yuav tsum muaj sijhawm txaus thiab cov av noo tsim nyog rau lawv cov tshuaj tiv thaiv dej kom ua tiav lub zog tsim. Kev ua mus rau cov kauj ruam tom ntej (xws li, txhim kho kaum daim kab xev) ntxov dhau yog sib npaug rau kev siv lub nra ua ntej cov khoom siv "skeleton" yog tag nrho tsim.

2.2 Ceeb toom Risk

• Interrupted Strength Development ntawm Kho Txheej Txheej: Cov khoom siv tsis muaj dej txaus, ua rau cov qauv hauv lub cev xoob uas tsis tuaj yeem ua tiav qhov kev xav tau ntawm cov khoom thauj -cov kabmob muaj peev xwm.
• Thaum ntxov Lub cev qhuav dej thiab tawg: Cov dej saum npoo av evaporates sai heev, ua rau cov yas shrinkage tawg. Cov micro- cov kab nrib pleb no yuav dhau los ua qhov chaw rau yav tom ntej cov dej nkag thiab kev ntxhov siab.
• Kev puas tsuaj tas mus li rau Bond Strength: Kev txhim kho kaum daim kab xev rau ntawm lub xeev tsis muaj zog ua rau txo qis nws txoj hlua khi, thiab qhov no tsis tuaj yeem them nyiaj los ntawm kev kho tom qab.

2.3 Tswj Kev Ntsuas

1.Tsim thiab tshaj tawm Txoj Cai Yuav Tsum Kho Cov voj voog: Raws li cov khoom lag luam tshwj xeeb thiab ib puag ncig, txhais lub sijhawm kho yam tsawg kawg nkaus rau cov khoom kho sib txawv (xws li, cement-raws li mortar yuav tsum muaj tsawg kawg yog 3-7 hnub ntawm cov dej ntub dej) thiab muab tso rau ntawm qhov chaw tsim kho.

2.Siv cov kev ntsuas "Active Curing".: Txwv tsis pub kev cia siab rau kev kho kom zoo ib leeg. Siv txoj hauv kev xws li npog nrog cov ntaub ntub dej, tshuaj tsuag cov tshuaj tua kab mob, lossis lub qhov rooj ntawm lub qhov rooj / lub qhov rais sib khi kom ua kom muaj qhov chaw nyob ruaj khov - av noo, cua ntsawj ntshab - dawb, thiab hnub ci - tiv thaiv ib puag ncig rau thaj chaw kho.

3.Tsim kom muaj "Curing Time Lock" System: Muab ib daim ntawv lo rau thaj chaw kho uas hais txog "lub sijhawm tsim kho" thiab "lub sijhawm ntxov tshaj plaws rau cov txheej txheem tom ntej." Kev ua haujlwm tom ntej yog txwv tsis pub ua ntej lub sijhawm no.

3.1 Ignorance ntawm lub hauv paus ntsiab lus ntawm monolithic cwj pwm nyob rau hauv multi- txheej txheem

Thaum ib qho kev kho yuav tsum tau muab tso rau hauv daim ntawv thov txheej vim thickness, yog tias tsis muaj kev kho mob ntawm cov khaubncaws sab nraud povtseg los yog lawv tsuas yog stacked, lub interface ntawm qub thiab tshiab cov ntaub ntawv los ua ib tug tsuas yog lub cev tiv tauj nto, tsis muaj tshuaj bonding thiab mechanical interlock.

3.2 Ceeb toom Risk

Kev pheej hmoo siab ntawm Interlayer Delamination: Txhua txheej shrinks thiab bears kev ntxhov siab ntawm nws tus kheej, yooj yim ua rau delamination ntawm lub interface, ua rau lub disintegration ntawm tag nrho cov kho lub cev los ntawm sab hauv.

Ua ib Channel rau Moisture Infiltration: Tsis muaj zog interlayer interfaces yog qhov chaw zoo tshaj plaws rau kev ya raws thiab sib sau ua ke, ua kom nrawm rau sab hauv corrosion thiab khov -thaw kev puas tsuaj.

Poob ntawm Kev Ncaj Ncees ntawm Kev Kho Lub Cev: Tsis tuaj yeem sib npaug sib npaug thiab faib cov khoom tawm sab nraud, nws poob nws cov qauv kev sib koom ua ke.

3.3 Tswj Kev Ntsuas

1.nruj me ntsis tswj "Roughening thiab Wetting" Interlayer txheej txheem:

Roughening: Thaum cov mortar txheej dhau los mus txog qhov "ntiv tes-kov nyuaj" xeev (ob peb teev tom qab thov), roughen nws nto nrog cov cuab yeej los tsim ib tug textured interface.

Wetting: Ua ntej siv cov txheej txheem tom ntej, qhov kev sib txuas yav dhau los yuav tsum tau ntub dej kom huv (tsis muaj dej sawv ntsug) nrog txhuam los yog lub raj mis tsuag kom tiv thaiv kom tsis txhob ya raws sai los ntawm cov mortar tshiab, ua kom cov dej tsis tu ncua.

2. Tswj ib leeg - Txheej Daim Ntawv Thov Thickness: Ua raws li cov khoom tso cai ib zaug - dhau thickness (feem ntau 5-15mm). Thov nyob rau hauv cov khaubncaws sab nraud povtseg yog thicker kom tsis txhob tawg los ntawm tus kheej-yuag sagging los yog ntau shrinkage.

3. Txais yuav "Kev Ua Haujlwm Txuas Ntxiv" lossis "Tus Neeg Sawv Cev Ua Haujlwm"Cov: Qhov zoo tshaj plaws, kev kho txheej txheej yuav tsum ua kom tiav sai sai. Yog tias lub sijhawm ntev dhau lawm, tus neeg sawv cev sib koom ua ke yuav tsum tau siv rau ntawm qhov kho hauv qab txheej txhawm rau txhim kho interlayer adhesion.

4.1 Kev ntxhov siab hloov pauv tshwm sim los ntawm cov duab geometric tsis xws luag

Tsim ib qho chaw kho nrog ntsug "patch" npoo tsim ib qho ntse "txoj kab" ntawm qhov sib txuas ntawm cov khoom qub thiab tshiab. Thaum lub kaum daim kab xev npog nws los yog cov txheej tiav shrinks, kev ntxhov siab nyob rau hauv cov kab no, zoo li tus qhab nia ntawm iav.

4.2 Ceeb toom Risk

• Induces tsis tu ncua cracking: Cov kab nrib pleb yuav luag inevitably tshwm sim raws cov npoo ntawm qhov kho thaj tsam, ua kom pom cov square lossis lub nplhaib - zoo li cov kab nrib pleb.
• Muaj feem rau daim kab xev Flatness: Thaum kaum daim kab xev spans ib tug ntse ntug, nws yog ib qho nyuaj los xyuas kom meej tag thiab ruaj khov nyob rau hauv lub rov qab, yooj yim ua rau hollowing.
• Txheej Txheej Tsis tuaj yeem zais nws: Txawm tias cov txheej txheej nyias nyias tuaj yeem nthuav tawm cov txheej txheem ntawm kev kho thaj ua rau thaj vim qhov tsis sib xws ntawm geometric hauv substrate.

4.3 Tswj Kev Ntsuas

1. Teem caij "Beveled Cutting" Method: Ua ntej kho, siv cov cuab yeej zoo li lub kaum sab xis kom txiav cov npoo tsis zoo rau hauv sab hauv- beveled zoo li (xws li, 45-degree lub kaum ntse ntse), nthuav qhov sib cuag thiab qhov chaw sib txuas ntawm cov khoom qub thiab cov khoom tshiab.

2. Ua raws li "Kev Kho Kho Ntxiv" Txoj Cai: Kev kho qhov yuav tsum tau me ntsis dhau ntawm qhov chaw puas lawm, kom ntseeg tau tias qhov chaw hloov pauv ntawm beveled ntog ntawm lub suab substrate, tsim kom muaj qhov maj mam txuas ntxiv.

3.Precise Ntug Filling: Thawj txheej ntawm cov khoom siv kho mob yuav tsum tsom xyuas kom muaj kev sib raug zoo nrog lub hauv paus beveled. Yog tias tsim nyog, lub sealant hloov tau yooj yim dua tuaj yeem siv rau qhov pib ntawm ntug sealing.

Cov txheej txheem siab tshaj plaws ntawm kev kho lub substrate zoo yog ua kom qhov chaw kho "poob" tsis yog tsuas yog pom kev xwb tab sis kuj nyob rau hauv lub cev kev ua tau zoo, ua ib qho nrog thawj substrate. Los ntawm kev ua raws li cov txheej txheem tseem ceeb ntawm kev qhuab qhia"Cov khoom sib txuam, tsim nyog kho, Interlayer Fusion, Beveled Hloov,"yam koj tsim yuav tsis yog ib qho yooj yim "patch," tab sis ib qho ntxiv, txhim khu kev qha installation substrate rau metal kaum daim kab xev, tshem tawm qhov teeb meem kawg rau lub tsev ntev - lub sij hawm zoo. Yog tias koj xav tau kev taw qhia ntxiv txog kev kho cov khoom xaiv lossis qhov chaw- cov txheej txheem kho tshwj xeeb, peb cov kws tshaj lij muaj kev sib tham. Thov koj txhob xav li castiv tauj peb.