Cov qauv pob zeb ua vaj tse yog qhov tseem ceeb ntawm cov dej num tsim kho, thiab qhob precast Cheebtsam yog ib qho tseem ceeb ntawm nws. Ntawm tam sim no, feem ntau cov me thiab nruab nrab ntawm cov khoom sib xyaw ua ntej, vim tias qhov no tsis tsuas yog txhim kho kev ua haujlwm tab sis kuj tseem txo cov nqi. Txawm li cas los xij, qee yam tshwm sim tsis xws luag feem ntau tshwm sim thaum muaj kev tsim khoom thiab kev saib xyuas ntawm qhob precastents. Yuav tiv thaiv li cas thiab kho lawv yog qhov tseem ceeb hauv kev tsim cov khoom tsim nyog kom muaj nuj nqi. Kab lus no ua kev tshuaj xyuas ua ntej thiab tshawb fawb txog cov teeb meem no.
Nto cracks
Ua rau cov txheej txheem kab nrib pleb
1) Yog tias ib qho kev sib xyaw ua ke yog qhov qub dhau, lossis ntev dhau, lossis yog tias qhov kev txhawb nqa tsis zoo tau nqis los, kev ncaj ncees ntawm cov khoom yuav raug rhuav tshem. Cov kev ntxhov siab sab hauv-cov kabmob hlau cov kab ntawm cov tivthaiv yuav corrode, uas tseem yuav muaj zog tsis muaj zog ntawm cov khoom muaj nqi.
2) Kev Tu Tsis Txaus Siab. Kev ua cov prefabricated Cheebtsam yuav tsum tau nqa tawm hauv nruj ua raws li cov cai. Qhov ntsuas kub ib txwm nyob ib puag ncig 20 degree. Dej yuav tsum tau ua tsawg kawg 3 zaug thaum tsaus ntuj nyob rau hauv thawj 3 hnub. Yog tias nws tsis tau raws li cov cai, cov tawv ncauj ntawm cov tivthaiv nws tus kheej yuav ua phem dua, cuam tshuam rau qhov zoo ntawm cov khoom siv.
3) Lub zog formwork ntawm lub zog ntawm prefabricated Cheebtsam tsis tsim nyog. Thaum tshem tawm cov ntu thiab demoulding, cov qhob zog ntawm lub cheebtsam yuav tsum tsis pub tsawg tshaj 50%; Thaum hle cov pallwork ntawm panels, kab teeb, kab sib tw ntawm 4m, cov qhob zog yog tsis muaj zog dua li tus qauv tsim 50% ntawm tus lej tsim; Rau cov khoom siv loj dua 4m, nws yuav tsum tsis pub tsawg dua 70% ntawm tus lej tsim. Thaum tshem tawm cov tub ntxhais tseem ceeb ntawm lub hollow slab, lub zog ntawm cov pob zeb ua kom muaj tshwm sim, txwv tsis pub, tag nrho cov kev ua tau zoo ntawm cov prefabricated sib xyaw yuav raug txo.
4) Thaum lub sijhawm txheej txheem teeb tsa ntawm prefabricated Cheebtsam, lub grouting yog tsis ncaj thiab dej-cugas yog loj heev. Qhov kev ua tau zoo tag nrho ntawm cov kev ua tau zoo ntawm kev txiav txim siab ntawm cov rog sab nraud, ua rau muaj khoov sab nraud, ua rau muaj qhov ntev ntawm cov khoom siv, uas yog, longitudinal tawg.
5) tsis raug kev sim tsis raug thiab ib puag ncig kev yuav tseem yuav cuam tshuam tag nrho cov kev ua tau zoo ntawm cov khoom siv thiab muab cov kab nrib pleb ntawm qib sib txawv.
Kho txoj kev rau cov kab nrib pleb
Txog cov khoom ua ntej hauv kev ntxhov siab-kabmob ntawm cov kabmob, yog tias muaj ntau tus mob hnyav (nkag mus lossis tob) tawg, feem ntau tsis muaj nqi kho. Txawm hais tias kho, tus nqi yuav zoo li los yog tshaj tus nqi sib xyaw ua ke, yog li nws yuav tsum tau txhuam. Yog tias cov khoom sib xyaw tsuas muaj cov kev tawg dav dav, txhawb cov txheej txheem thiab kho cov qauv tuaj yeem siv los daws lawv.
Rau cov kab nrib pleb uas muaj qhov dav tsawg dua 0. 2 hli, nyob rau hauv kev txiav txim siab los ntawm cov ntaub ntawv nyias nyias) thiab ib qho kua (epoxy lawb) los yog ib qho kua siv tau los kho cov kab nrib pleb. Cov kev cai tshwj xeeb yog txhawm rau thaj chaw kaw txog 15 cm txog 20 cm rau cov roj kub, thiab tom qab ntawd siv cov pa hluav taws xob, thiab tom qab ntawd siv cov pa hluav taws xob kom huv si Tom qab ntawd thov nrog epoxy boad kua thiab iav fiber ntau. Thaum kawg, cia nws nyob hauv cov kab mob uas qhuav rau kev kho kom zoo, thiab ceevfaj tsis txhob cia dej mus rau kom dej nkag ua ntej.
Rau cov kab nrib pleb uas muaj qhov dav dua {{{{{{{{}}}}}}}}}. 2 hli, high-zog cov ntaub ntawv tuaj yeem siv los kho lawv tom qab kev khiav tawm. Cov kauj ruam tshwj xeeb yog khawb tawm ib qho kev sib tw hla kev sib txuas nrog kev pab ntawm 2cm mus rau 4cm, thiab ib sab nqes hav tsawg dua 1: 0.3. Yog hais tias txoj leeg qaum yog ntau dua li cov txheej tiv thaiv ntawm cov hlau tuav, nws kuj yuav tsum tau txiav qhib thiab cov hlau tuav nthuav tawm. Tom qab tu lub gouge nrog tib txoj kev tu raws li tau hais los saum no, sau rau cov ntaub ntawv siab. Commonly used filling materials include epoxy mortar, chlorine-biased mortar, styrene-acrylic emulsion polymer cement mortar, etc.
Chlorine-Biased cug yog ib lub zog loj-zog nrog cov khoom zoo ib yam li epoxy cug. Cov txheej txheem kho tau zoo thiab cov kauj ruam yog tib yam li epoxy cug tsuas yog tias txheej ntawm chlorine-biased kua xav tau thov rau ntawm qhov chaw sib koom ua ke. Chlorine-Biased cug yuav tsum tau kho cov npoo ntub los ntawm cov hau kev xws li cov dej ntub lossis cov dej tawm tom qab chaw pib, thiab lub sijhawm yuav tsum tsis tsawg tshaj 14 hnub.
Styrene-Acrylic Collch yog cov cement-acrylic acid ua rau cov khoom noj acidolymer raws li cov khoom siv cementing. Nws muaj compressive siab, tawg thiab qhov muaj zog yooj yim. Tshwj tsis yog tias ib lossis ob lub tsho tiv no ntawm cov kua muag uas tau ua tiav rau cov txheej txheem sib koom ua ke, cov kauj ruam backfill tau zoo ib yam li cov tshuaj chlorine-biased cugorine-biased cug.
Rau cov prefabricated cheeb tsam hauv theem nrab lossis tsis muaj kev nyuaj siab rau cov kab ke tau muaj kev puas tsuaj, tsis muaj taw tes rau hauv kev kho lawv thiab lawv yuav tsum tau muab kiav ntawv. Yog tias muaj cov menyuam yaus tawg rau saum npoo av, tsis muaj kev kho. Yog tias tsuas yog cov kab nrib pleb dav dav tshwm sim, tsim nyog txoj kev caulking thiab kho cov hau kev yuav tsum tau siv. Feem ntau siv cov ntaub ntawv txuas ntxiv yog tsuas yog ua ntej-shrunk ua ntej nrog kev ua tau zoo thiab ntau dua los ntawm cov epoxy uas yog kim.
Ua ntej-shrunch cug yog hom nyuaj catural cort uas tau sib xyaw thiab khaws cia rau hauv ib pawg rau}. 5 txog 1.5 teev ua ntej siv. Tom qab sib tov, cov tshuaj khib tuaj yeem tsim ib lub pob thaum tuav hauv tes thiab xav tias noo tab sis tsis tso dej. Lub sijhawm no, nws yuav tsum siv tam sim ntawd. Kev tshuaj khib thiab cov txheej txheem yog tib yam li cov chlorine offset cug kev cai, tsuas yog hais tias ib txheej ntawm Caasy Slurry yuav tsum tau thov rau ntawm cov sib koom ua ntej. Yog tias muaj feem nrog cov kev cai tshwj xeeb, cov txheej txheem kho kom zoo nkauj yog sau nyob rau hauv uas cov txheej txheem kho ua ke tau sau nrog cov txheej txheem nruab nrab, lossis cov txheej txheem nruab nrab yog muaj kev sib tsoo ua ntej.
Pockmarked noodles
Ua rau muaj cov noodles pockmarked
Nws txhais tau tias cov pob zeb ua tsis tiav los tsim cov kab sib tov sab nraud los ntawm cov ceg xis los ntawm cov formwork uas yog qhov loj me ntawm cov noob. Lub cheeb ntawm convave me ntsis feem ntau tsis muaj ntau tshaj 5 hli.
Cov ua rau muaj:
1) Lub tso tawm ntawm txoj kab nqes qaum ntawm tus nees ntawm cov nees-horseshoe tsis yog du, thiab lub nkoj ntu muaj cov hlau tuab nyob hauv qab. Vim qhov chaw txwv tsis pub siv cov pa roj, cov roj, thiab lwm yam., Qhov nyuaj yog qhov nyuaj kom ncav cuag lossis kev vibration yog tsis txaus. Qee cov pa npuas dej nyob nruab nrab ntawm cov pob zeb ua thiab cov formwork, ua rau loog. mij.
2) Kev txuas ntxiv ntawm cov pob zeb ua kom tsis zoo. Ua ntej cov qhob tshiab tau muab tso rau hauv cov pwm, lub poured qhob nyob rau ntev dhau, thiab ib feem ntawm cov qhob ua ke thaum sib koom ua ke ntawm cov qub thiab khoom tshiab.
3) Siv cov pob zeb me me rau ncuav cov horseshoe tav toj ntawm cov khaubncaws sab nraud povtseg. Thaum lub vas sab tau nchuav, cov xis mas cug ntws raws cov khoob lossis thaj chaw ntawm cov formwork rau saum npoo ntawm cov pob zeb hauv av. Tom qab cov formwork tau tshem tawm, sib quas ntus thiab txuas ntxiv "kua muag" yuav tshwm sim, zoo ib yam li pockmarked rau cov chaw.
4) Cov txheej txheem tus neeg sawv cev tsis raug cai lossis cov txheej txheem ntub dej yuav ua rau lub pob zeb ua ntej, ua rau cov pob tawb ua ntej,
5) Cov saum npoo ntawm cov formwork yog tsis huv thiab muaj keeb kwm tau tawg, cement slurry, cug, ua rau pitting tom qab pob zeb pouring.
Kho txoj kev rau "pitted noodles"
Pockmarks yog pits rau ntawm cov qhob saum npoo av, uas tsis muaj qhov cuam tshuam loj ntawm cov qauv thiab feem ntau tsis kho. Yog tias koj xav tau daws nws, hom qauv yog raws li hauv qab no:
Siv cov tshuaj pleev roj rau cov roj ntsha kom huv si cov tso tawm tus neeg saib xyuas roj lossis stains nrog txhuam, thiab tsau lawv nrog dej ua ntej kho. Xis mas cug yog siv los kho. Hom mas mas yuav tsum ua kom haum nrog thawj pob zeb ua. Cov xuab zeb yuav tsum yog cov xuab zeb zoo nrog qhov ntau tshaj plaws ntawm cov<1 mm. The ratio of cement mortar is generally about 1:2 or 1:2.5. Since the quantity is not large, it can be manually mixed in a small bucket and used as needed. If necessary, you can mix white cement to adjust the color through experiments. According to the method of a painter scraping putty, use a scraper to vigorously press the mortar into the pitted area, and then scrape it smooth until it meets the appearance requirements. After the repair is completed, cover and moisturize it in time to maintain it consistent with the original concrete.
Nas muv
Ua rau "honeycomb"
Nws txhais tau hais tias tsis muaj cement slurry nyob rau saum npoo ntawm cov pob zeb ua kom muaj zog, thiab muaj cov pob zeb ua kom zoo dua li honeycombs thiab tsis xwm yeem nyob rau hauv cov duab. Cov pob zeb raug ntau dua 5 hli. Cov kab ke tseem ceeb tsis tau xau, tab sis cov stirrups yuav tau xau. Cov ua rau muaj:
1) Cov qauv formwork yog leaking slurry, qhov kev co yog qhov tsis txaus lossis ntau dhau, thiab cov slurry so.
2) Cov pob zeb tawg yog qhov me me heev, thiab cov khoom siv co tau muaj txiaj ntsig tsis txaus lossis txeej kev co.
3) tsis raug qhob kos pouring txoj kev, qhob sib cais, cov khoom txiav nrog cov txheej txheem slurry, thiab kev siv tsis raug ntawm cov slurry vibrating txoj kev.
4) Tsis muaj kev sib xyaw ua ke thiab kev co ua kom cov qhob tsis ncaj thiab tsis muaj tuab, ua rau kab hlau loj hauv zos.
Kho txoj kev ntawm "Honeycomb"
Cov honeycombs me me tuaj yeem kho tau siv lub pockmarking txoj kev; Cov honeycombs tuaj yeem kho tau siv cov hauv qab no:
Ua tib zoo tshem tawm cov pob zeb ua ke ntawm honeycomb thiab ib puag ncig cov chaw tsis muaj zog, thiab ntxuav cov pob zeb ua ke nrog cov dej siab siab thiab cov hlau txhuam. Xis mas cug yog siv los kho. Hom mas mas yuav tsum ua kom haum nrog thawj pob zeb ua. Cov xuab zeb yuav tsum yog nruab nrab-ntxhib. Qhov kev faib ua feem ntawm xis mas cug yog li 1: 2 lossis 1: 3, thiab do tusyees. Thaum waterproofing yog qhov yuav tsum tau, ntxiv 1% rau 3% ntawm cov lej ua kom xis nyob rau cov cement ntawm cov cement. Kev siv dej tsis muaj dej. Txawm li cas los xij, cov koob tshuaj yuav tsum txiav txim siab los ntawm kev sim kom haum rau cov xim sib txuas.
Raws li kev plastering txoj kev, siv ib lub trowel kom nquag nias lub tshuaj khib nyiab rau hauv honeycomb thiab ua tib zoo txhuam nws tiaj. Siv tus pas ntsuas los ncaj rau sawv thiab cov ces kaum kom muaj qhov pom kev zoo ib yam. Tom qab kho tau tiav, npog thiab moisturize nws nyob rau lub sijhawm kom muaj kev tswj hwm nws ua ke nrog cov pob zeb qub.
Qhov
Ua rau lub qhov
Nws yog hais txog qhov tsis xws luag nyob rau saum npoo ntawm cov qhob uas ntau tshaj qhov tuab ntawm cov txheej tiv thaiv tab sis tsis pub tshaj 1/3 ntawm tus ntoo khaub lig-ntu loj. Muaj cov khoob hauv cov qauv thiab tsis muaj pob zeb ua pawg lossis ib nrab. Aub qhov xa mus rau qhov uas tuaj yeem pom los ntawm cov qauv ua vaj tse. Cov ua rau muaj:
1) qhov kev ncua deb ntawm sab hauv thiab txheej txheem sab nraud yog nqaim, ua kev co nyuaj. Lub compgregate particle loj yog loj heev thiab lub web steel cov ceg yog ib yam nkaus thiab kos pob zeb thiab kos cov kav dej lossis cov kav dej corrugated, ua rau lub qhov hauv cov pob zeb qis.
2) Lub hauv qab ntawm cov pob zeb ua tsis zoo, lossis cov qhob cov pob zeb thiab cov hlau sib xyaw ua ke yog muaj cov pob zeb tsis zoo.
3) Tsis ua raws li kev co raws li cov pouring ua ntu zus los ntawm kev co cov ntsiab lus xau. Cov khaubncaws sab nraud povtseg tsis tau nchuav lossis cov khaubncaws sab nraud povtseg lossis cov khaubncaws sab nraud tuab tuab heev, ua rua huv lub thau huv thau tuabneeg thau huv.
4) Cov cement agglomerates lossis cov mlom muaj dej khov, av nkos, thiab lwm yam khib nyiab.
Txoj Kev Kho Kom Qhuav
Ua tib zoo tshem tawm cov pob zeb xoob thiab muaj kev sib cav sib ceg hauv thaj chaw kho. Sab qaum ntawm lub qhov yuav tsum tau nqes mus sab nraud thiab upwards, thiab qhov qis dua yuav tsum yog square thiab qib. Siv cov dej siab siab thiab cov hlau txhuam los ntxuav cov txheej txheej. Ua ntej kho tau, sau nws cov ntaub ntub dej ntub gauze thiab lwm cov ntaub ntawv thiab ua kom nws noo rau ntau tshaj li 72 teev kom puv nkaus moten lub pob zeb ua ke. Txoj kev kho yuav tsum tau muaj nrog cov pob zeb zoo pob zeb ua kom nruj lossis cov roj ntsha ua kom hnyav uas yog ib theem siab dua li qub pob zeb ua. Hom xis mas yuav tsum zoo ib yam li lub qub pob zeb ua. Txhawm rau kom txo lossis tshem tawm cov khoob ntawm cov laus thiab tshiab ua ke yuav tsum tau muab ib qho kev nthuav dav rau hauv cov cement ntawm {}}. 1 ‰. Lub qhov yog thawj coated nrog Maas slurry thiab tom qab ntawd muaj zog dua li cov pob zeb ua kom tsis txhob tawg ntawm qhov chaw sib chwv ntawm lub qub thiab cov pob zeb ua kom huv. Nyob rau tib lub sijhawm, cov qhob tshiab ua saum npoo yog du thiab polished kom txog thaum nws ua tau raws li cov kev xav tau. Tus smoothed qhob ua ke yuav tsum tau npog nrog zaj duab xis yas rau kev kho thiab nruj nreem nrog kev txhawb nqa formwork.
Cov txuj ci
Hais txog cov kab hlau nthuav tawm sab hauv cov pob zeb ua ke ntawm qhov chaw ntawm cov khoom siv. Vim li cas yog:
1) Cov pob zeb ua tau muaj haujlwm tsis zoo, cais tshwm sim, thiab muaj tsis muaj slurry nyob rau hauv lub formwork seem lossis slurry leakage nyob rau hauv formwork.
2) Cov neeg hla ntawm cov tswv cuab me me, cov hlau cov kab hlau yog qhov ntom ntom ntom, thiab lub cheeb ntawm cov pob zeb loj thiab daig ntawm cov hlau tuav.
3) Cov txheej txheem thaiv kev ua haujlwm yog qhov me me lossis cov pob zeb ua hauv cov txheej txheem tiv thaiv kab mob los ntawm kev co los yog yog cov paj tawg.
Kev tiv thaiv thiab tswj kev ntsuas yog raws li hauv qab no:
1) Cov qhob sib xyaw piv muaj cov haujlwm ua haujlwm zoo.
2) Hauv cov cheeb tsam uas muaj cov hlau ntom ntom hlau, xaiv cov pob zeb tsim nyog thiab ntau raws li cov cai. Qhov ntau tshaj plaws qhov loj me yuav tsum tsis pub tshaj 1/4 ntawm qhov tsawg kawg nkaus ntawm cov qauv txheej txheem, thiab yuav tsum tsis pub tshaj 3/4 ntawm qhov tsawg kawg nkaus ntawm cov hlau sib txuas.
3) cov tuab tuab, qhov chaw nyob, thiab ntau ntawm cov steel tiv thaiv txheej txheej yuav tsum yog.
Ploj lawm npoo thiab fab
Hais txog qhov poob ib nrab, tsis xwm yeem, thiab lub siab tsis xws luag ntawm cov pob zeb ntawm cov ces kaum ntawm cov qauv txheej txheem. Vim li cas yog:
1) Cov formwork yog tau muab tshem tawm heev thaum ntxov, ua rau cov pob zeb ua kom puas thaum cov formwork raug tshem tawm.
2) Kev ua haujlwm ntawm cov pwm raug tshem tawm heev, thiab cov npoo thiab cov npoo tsis muaj kev tiv thaiv zoo los ntawm cov khoom sib zog sab nraud lossis cov khoom hnyav thiab raug tua.
3) Cov ntoo formwork tsis tau muaj dej tag nrho lossis noo noo txaus. Tom qab cov qhob tau nchuav dej thiab nthuav tawm, ua rau cov ces kaum rau nrib pleb, thiab cov npoo thiab cov ces kaum thaum cov formwork raug tshem tawm.
4) Tus qauv seem tsis tau ntxuav, tus neeg sawv cev rho tawm tsis tau thov lossis daim ntawv thov tau tsis xwm yeem.
Kev tiv thaiv thiab tswj kev ntsuas yog raws li hauv qab no:
1) Tswj cov formwork lub zog. Thaum tshem tawm cov sab tsis-cov kabmob formwork, cov qhob ua kom muaj zog yuav tsum tsis pub tsawg tshaj li 1.2mpa.
2) Thaum tshem tawm cov formwork, saib xyuas yuav tsum tau them rau kev tiv thaiv cov npoo thiab cov ces kaum thiab tsis txhob muaj zog yuam.
3) Cov ntoo formas yuav tsum ua ua ntej pouring ua ntej pouring, thiab ua tib zoo tswj tau tom qab qhob yog poured.
4) Cov seem ntawm daim ntawv foos yuav tsum tau ntxuav, thiab yuav tsis muaj ib qho kev tawm tsam lossis cov khib nyiab.
Tag
Ntau yam tsis xws luag tshwm sim thaum ua cov pob zeb ua kom muaj zog nyob rau hauv ib txwm muaj. Qee yam tsis xws luag tuaj yeem kho tau los ntawm cov qauv kev tshaj lij, tab sis qee qhov tsis xws muaj peev xwm tiv thaiv los ntawm kev tswj nruj ntawm cov txheej txheem ntau lawm.
