Yuav Kho Zigzag Cracks Ntawm Stairwell Sab Phab Ntsa - Lub Luag Haujlwm Ntawm Fiberglass Txhim Kho Mesh

 

Thaum tus thawj tswj vaj tse, Laus Chen, hu rau kuv, nws suab zoo nkauj heev. "Ntau qhov tawg," nws hais. "Zigzag tawg ntawm lub stairwell sab phab ntsa. Peb tau muab lawv patched xyoo tas los, thiab tam sim no lawv rov qab los. Koj puas tuaj yeem pab kuv daws qhov no?"

 

Kuv mus rau hauv lub tsev - ib tug kaum tsib-storey tsev neeg pej thuam. Cov kab nrib pleb ntawm lub stairwell sab phab ntsa yog classic - kab pheeb ces kaum, raws li qhov siab ntawm cov kauj ruam, ib tug tom qab lwm, tsim ib tug meej zigzag qauv. Qhov chaw tau zoo ib yam nkaus - txoj cai ntawm kev sib tshuam ntawm cov kauj ruam treads thiab sab phab ntsa, khiav los ntawm hauv qab mus rau txhua txoj kev.

 

Laus Chen hais rau kuv tias lawv tau ntiav ob tus neeg kho qhov sib txawv ua ntej. Ob leeg hais tias nws tsuas yog cov mortar txheej tawg, yog li lawv tau txiav nws tawm thiab rov ua dua. Tsis pub dhau rau lub hlis, cov kab nrib pleb rov qab los rau hauv tib qhov chaw.

 

Kuv tuav lub phab ntsa nrog kuv txhais tes, saib seb cov treads txuas nrog sab phab ntsa, thiab hais rau nws: "Cov neeg koj tau ntiav ua ntej kho qhov chaw. Lawv tsis kov lub hauv paus ua rau."

 

Lub zigzag tawg ntawm cov phab ntsa stairwell sab nqes mus rau ib yam - yuav ua li cas cov rog ua haujlwm.

 

Stair treads yog sloped. Txhua lub sij hawm ib tug neeg taug kev ntawm ib tug tread, lub load hloov los ntawm tread mus rau sab phab ntsa. Phab ntsa ntawd siv ob lub zog tib lub sijhawm - lub zog ntsug nqes los ntawm lub tread, thiab txoj kab rov tav thawb tawm sab nraud vim tias lub tread yog angled. Ua ke ob lub zog, thiab cov kev taw qhia ntawm lub ntsiab kev ntxhov siab ua kab pheeb ces kaum. Ntxiv pob zeb shrinkage thiab kub hloov mus rau qhov sib tov - ib zaug tawg pib ntawm qhov tsis muaj zog, nws yuav tsis khiav ncaj nraim. Nws ua raws cov kev ntxhov siab tseem ceeb - diagonally. Qhov ntawd yog qhov zigzag los ntawm.

 

Nyob rau hauv tas li ntawd, stairwells yog ib co ntawm cov feem ntau kub-rhiab qhov chaw nyob rau hauv tej lub tsev. Qhov sib txawv ntawm qhov kub thiab txias ntawm cov pem teb saum toj thiab hauv pem teb yog qhov tseem ceeb. Sab nrauv phab ntsa tau txais lub hnub; phab ntsa sab hauv tsis. Ob sab nthuav thiab cog lus sib txawv, uas txhais tau hais tias cov phab ntsa deforms unevenly.

 

Dab tsi yog qhov phem tshaj, cov treads raug nrum tom qab lub ntsiab qauv, tsis ua ke nrog rau sab phab ntsa. Yog li ntawd ib txwm muaj kev sib koom ua ke txias nruab nrab ntawm lawv. Lawv txo qis ntawm cov nqi sib txawv thiab txav txawv txav - thaj chaw no yog qhov chaw muaj kev ntxhov siab ntuj.

 

Tom qab hnov ​​tag nrho cov ntawd, Laus Chen hais tias, "Zoo, qhia kuv yuav kho li cas."

 

Kuv hais rau nws tias peb xav tau ob txheej ntawm fiberglass reinforcing mesh - tsis yog ib txoj hlua ntawm cov kab nrib pleb, tab sis kev txhawb nqa thoob plaws tag nrho cov stairwell sab phab ntsa.

 

Thawj txheej yog rau kev tswj kev tawg. Ua ntej, txiav tawm cov txheej uas twb muaj lawm - tsawg kawg rov qab mus rau lub pob zeb substrate. Qhov dav tshem tawm yuav tsum yog tsawg kawg 30 centimeters ntawm txhua sab ntawm cov kab nrib pleb. Tom qab ntawd ntxuav lub ntsej muag kom huv si, roughen nws nrog ib tug grinder, thiab nqus cov plua plav tawm. Siv ib txheej ntawm polymer-hloov mortar, txog 3 mus rau 5 millimeters tuab, thiab thaum nws tseem ntub, nias ib daim ntawv ntawm fiberglass reinforcing mesh rau hauv nws - flatten nws ruaj khov. Lub hom phiaj ntawm txheej txheej no yog qhov yooj yim: yog tias micro-cracks sim tsim hauv substrate, lub mesh tuav lawv rov qab thiab ua kom lawv tsis txhob ncav cuag qhov chaw.

 

Tom qab ntawd thawj txheej tau kho, thov ib txheej thib ob ntawm leveling mortar los npog thawj txheej ntawm mesh. Thaum qhov ntawd yog li 70-80% qhuav, embed ib txheej thib ob ntawm mesh - qhov no tuaj yeem yog me ntsis thinner, txog 2 mus rau 3 millimeters. Nws txoj hauj lwm tseem ceeb yog kom tsis txhob mortar nws tus kheej los ntawm shrinking thiab cracking.

 

Ob txheej ntawm mesh, nrog ib txheej ntawm mortar nyob rau hauv nruab nrab - nws yog ib tug ob-reinforcement system. Qhov txiaj ntsig yog tias thawj txheej tsis ntes txhua yam, txheej thib ob rov qab nws. Nyob rau hauv stairwell sab phab ntsa qhov kev vibration thiab kub hloov yog tas li ntawm kev ua hauj lwm, ib txheej feem ntau tsis txaus.

 

Laus Chen tau taub hau thiab nug cov lus nug tseem ceeb: "Koj ua li cas rau qhov sib tshooj?"

 

Cov kab nrib pleb khiav diagonally, tab sis cov mesh tuaj nyob rau hauv yob - yog li koj tso qhov kev taw qhia twg?

 

Kuv txoj hauv kev yog tso cov mesh ua raws li cov kev taw qhia ntawm cov kab nrib pleb, tsis yog kev taw qhia ntawm phab ntsa. Yog tias qhov tawg khiav los ntawm sab laug mus rau sab xis, qhov sib tshooj ntawm cov nplooj ntawv mesh yuav tsum ua raws tib kab kab pheeb ces kaum, nrog tsawg kawg 10 centimeters ntawm kev sib tshooj. Qhov twg lub mesh hits fab los yog cov pob qij txha uas treads ntsib cov phab ntsa, koj yuav tsum qhwv nws ib ncig - koj tsis tuaj yeem txiav nws tawm.

 

Qhov kev nthuav dav ntawm kaum-wrapping yog qhov tseem ceeb. Muaj ntau tus neeg kho qhov txiav mesh txoj cai ntawm lub ces kaum, tab sis tawg nyiam pib dua los ntawm cov ces kaum. Txhua lub ces kaum ntawm lub stairwell, txhua qhov kev sib tshuam uas cov tread ntsib sab phab ntsa - cov no yog qhov chaw siab tshaj plaws. Lub mesh yuav tsum tau txuas ntxiv mus rau cov cheeb tsam no, tsis muaj kev tawg.

 

Laus Chen sighed thiab hais tias, "Lwm cov neeg ua haujlwm tsis tau hais txog qhov no. Txhua yam lawv tau ua yog siv daim ntawv muab tub lim thiab daim kab xev."

 

Kuv hais rau nws tias yog li qub. Daim ntawv daim kab xev thiab cov mesh zoo tib yam tuaj yeem tuav ntawm cov phab ntsa tiaj tus, tab sis nyob rau hauv stairwells qhov twg cov rog yog complex, lawv tsis sawv ntsug.

 

Daim ntawv daim kab xev yuav luag tsis muaj zog tensile - nws tso siab rau cov nplaum lo rau saum npoo. Thaum lub substrate txav, daim kab xev tawg nrog nws. Ordinary mesh muaj zog dua, tab sis yog tias koj tsuas yog muab ib txoj hlua nqaim hla cov kab nrib pleb, qhov chaw txhawb zog me me dhau lawm. Kev ntxhov siab tseem muaj zog thiab nws tawg lawm.

 

Dab tsi koj xav tau yog kev txhawb nqa puv-phab ntsa, ntxiv rau cov ces kaum, yog li cov phab ntsa tag nrho ua raws li ib chav tsev. Tom qab ntawd cov kab nrib pleb tsis tau txais lub sijhawm rov qab los.

 

Yog li ntawd yog qhov uas peb tau ua ntawm Old Chen lub stairwell - nti tawm cov txheej qub, ua kom tawv nqaij, ntxuav nws, siv ob txheej mortar nrog ob txheej ntawm mesh, qhwv txhua lub ces kaum, thiab tau txais txhua txoj kev sib tshooj. Ze li peb xyoos tom qab, tsis muaj ib qho tawg tau rov tshwm sim dua.

 

Laus Chen tau xa ib lub suab rau kuv ob peb hnub dhau los, hais tias nws yuav tsum tau kos cov kab nrib pleb nrog tus cwj mem txhua zaus nws ua nws qhov chaw soj ntsuam, saib seb lawv puas loj tuaj. Tam sim no nws tsis tas yuav.

 

Thaum kawg, seb koj puas tuaj yeem kho cov zigzag tawg ntawm cov phab ntsa stairwell tsis tuaj yeem nqes mus rau cov khoom kim npaum li cas. Nws los txog seb koj puas nkag siab txog lub zog ntawm kev ua si. Thaum koj nkag siab qhov ntawd, koj paub tias cov kab nrib pleb tsis yog qhov teeb meem ntawm lub ntsej muag xwb - lawv yog cov phab ntsa ntawm kev qhia txog kev ntxhov siab. Qhov koj yuav tsum tau ua yog tsis npog qhov kev qhia - nws yog kom paub tseeb tias qhov kev qhia tsis muaj laj thawj tshwm sim thawj qhov chaw.

 

Qhov ntawd yog qhov uas fiberglass reinforcing mesh ua - nws kis tau qhov kev ntxhov siab tawm yog li nws tsis tag nrho mloog mus rau hauv ib kab.

 

Yog tias koj tab tom cuam tshuam nrog cov teeb meem tawg ntawm phab ntsa stairwell, kuv cov lus qhia yog: tsis txhob maj mus thov muab tub lim. Ua ntej, nkag siab cov rog. Tom qab ntawd, nteg lub mesh kom raug. Thawj kauj ruam teev cov kev taw qhia; theem thib ob txiav txim qhov tshwm sim.