Njira Zokonzera Ming'alu mu Mapangidwe a Konkriti
Ming'alu m'nyumba za konkriti ndi imodzi mwa mavuto omwe amapezeka kwambiri m'nyumba, milatho, makoma oteteza, pansi pa mafakitale, ndi zinthu zina zolimbitsa konkriti. Ngakhale kuti si ming'alu yonse yomwe ndi yoopsa, imafunikirabe kukonzedwa bwino chifukwa imatha kukhala malo olowera madzi, ma chloride, ndi mankhwala amphamvu omwe amafulumizitsa dzimbiri, amachepetsa kulimba, ndikufupikitsa moyo wa ntchito ya nyumbayo. Chifukwa chake, kumvetsetsa mitundu ya ming'alu, zomwe zimayambitsa, ndi njira zoyenera zokonzera ndikofunikira kwambiri kuti nyumbayo ikhale yotetezeka komanso ikugwira ntchito bwino.
Kumvetsetsa Ming'alu: Mitundu ndi Zifukwa
Musanasankhe njira yokonzera, gawo lofunika kwambiri ndikudziwa mtundu wa ming'alu. Kawirikawiri, ming'alu imatha kugawidwa m'magulu monga yomangidwa ndi yosamangidwa.
1. Ming'alu ya kapangidwe ka nyumba imachitika pamene zinthu za konkriti zikulemedwa ndi katundu wopitirira mphamvu yake, kusiyana kwa kapangidwe kake, zolakwika pa kapangidwe kake, kapena dzimbiri la cholimbitsa, zomwe zimakulitsa ndikufinya chivundikiro cha konkriti. Mtundu uwu wa ming'alu ukhoza kukhudza mphamvu ndi kuuma kwa kapangidwe kake.
2. Ming'alu yosapangidwa nthawi zambiri imagwirizanitsidwa ndi kusintha kwa kuchuluka kwa konkriti monga kuphwanyika kwa pulasitiki, kuphwanyika kouma, kusintha kwa kutentha, kapena njira zosalimba zophikira. Ming'alu imeneyi nthawi zambiri imakhala yaching'ono koma imakhalabe pachiwopsezo cha kulimba.
Kuphatikiza apo, ming'alu ingathenso kugawidwa m'magulu kutengera nthawi yawo: ming'alu mu konkire yaing'ono (monga pulasitiki yophwanyika ndi ming'alu yoyambirira ya kutentha) ndi ming'alu mu konkire itatha kuuma (monga ming'alu youma yophwanyika, ming'alu chifukwa cha katundu, ndi ming'alu chifukwa cha zochita za mankhwala monga alkali-silica).
Gawo Lofufuza ndi Kuzindikira
Njira zochiritsira zogwira mtima ziyenera kutsatiridwa ndi kupeza matenda oyenera. Kafukufuku nthawi zambiri amaphatikizapo:
- Kuyang'ana m'maso: kuwona mawonekedwe a ming'alu (yaitali, yopingasa, yosweka pamapu), malo, ndi zizindikiro za kutuluka kwa madzi.
- Kuyeza m'lifupi mwa ming'alu: pogwiritsa ntchito choyezera ming'alu kapena maikulosikopu. M'lifupi mwa ming'alu ndi chinthu chofunikira kwambiri posankha njira.
- Kuyang'anira kayendedwe ka ming'alu: kaya ming'aluyo ikugwira ntchito (ikusunthabe) kapena yopanda ntchito (yokhazikika). Ming'alu yogwira ntchito imafuna njira yosinthasintha.
– Kuyesa kosawononga (NDT): monga nyundo yobwerera m'mbuyo, liwiro la ultrasound pulse (UPV), kapena radar yolowera pansi (GPR) kuti azindikire mipata ndi momwe zinthu zilili mkati.
- Kuwunikanso dzimbiri: mphamvu ya theka la maselo, mita yophimba kuti mudziwe kuya kwa chivundikirocho, ndikuwunika kuchuluka kwa carbonation ndi chloride ngati pakufunika kutero.
Popanda sitepe iyi, kukonzaku kunkangobisa zizindikiro zokha, osati kuthetsa chifukwa chake.
Mfundo Zazikulu Zokhudza Kukonza Ming'alu ya Konkire
Mwachidule, kukonza ming'alu ya konkriti kumafuna chimodzi kapena zingapo mwa zolinga izi:
1. Bwezeretsani mphamvu ya kapangidwe kake (monga matabwa/mizati yosweka kwambiri).
2. Bwezeretsani kulimba kwa madzi kuti mupewe kutuluka kwa madzi ndi zinthu zowopsa zomwe zingalowe.
3. Wonjezerani kulimba mwa kuteteza mphamvu ku dzimbiri.
4. Konzani kukongola, makamaka pa zomangamanga za konkriti zomwe zili poyera.
5. Lolani kuti ming'alu iyende bwino kuti isaswekenso.
Njira Zokonzera Ming'alu Zomwe Zimagwiritsidwa Ntchito Kawirikawiri
1. Jakisoni wa Epoxy
Kulowetsa epoxy ndi njira imodzi yotchuka kwambiri yopangira ming'alu yaying'ono kapena yapakatikati, makamaka pamene pakufunika kubwezeretsa mphamvu. Epoxy ili ndi mphamvu zambiri zomatira ndipo imatha "kugwirizanitsa" mbali ziwiri za konkire yosweka pamodzi.
Nthawi yogwiritsira ntchito:
- Ming'alu yopanda kanthu m'zinthu zomangira (matabwa, mizati, mbale).
– M'lifupi mwa ming'alu nthawi zambiri imakhala yaying'ono (nthawi zambiri imagwiritsidwa ntchito pa ming'alu yaying'ono mpaka mamilimita angapo, kutengera makina).
Magawo onse:
- Tsukani ming'alu kuchokera ku fumbi, mafuta, kapena zinthu zina zodetsa.
- Kutseka pamwamba pa ming'alu ndi kukhazikitsa nipple/port ya jakisoni.
– Ikani epoxy yotsika mphamvu kuyambira pansi mpaka pamwamba mpaka itadzaza.
- Chotsani chotsekeracho ndikusalaza pamwamba pake mutachikonza.
Ubwino: kubwezeretsa mphamvu ndi kulimba, zotsatira zake ndi zabwino.
Zoletsa: sizoyenera ming'alu yogwira ntchito kapena malo onyowa kwambiri/onyowa (pokhapokha mutagwiritsa ntchito utomoni wapadera).
2. Jekeseni ya Polyurethane (Jekeseni ya PU)
Mosiyana ndi epoxy, utomoni wa polyurethane nthawi zambiri umasankhidwa pa ming'alu yokhudzana ndi kutuluka kwa madzi chifukwa PU imatha kuchitapo kanthu ndi madzi ndikukulirakulira ndikupanga thovu lomwe limatseka njira yotuluka madzi.
Nthawi yogwiritsira ntchito:
- Ming'alu m'zipinda zapansi, m'matanthwe, m'mathanki, kapena m'nyumba zomwe madzi amatuluka.
- Mng'alu wonyowa/wogwira ntchito chifukwa cha kuthamanga kwa madzi.
Ubwino: imaletsa kutuluka kwa madzi, imagwira ntchito mwachangu.
Zoletsa: kubwezeretsa mphamvu ya kapangidwe kake nthawi zambiri sikufanana ndi epoxy; kumafuna kapangidwe koyenera ka zinthu kuti zikhale zolimba.
3. Kuyika Simenti kapena Micro-simenti
Pa ming'alu ikuluikulu, mabowo, kapena uchi zomwe zimafuna kudzazidwa ndi kuchuluka, kusakaniza grout kungakhale yankho. Zipangizo za grout zitha kukhala zopangidwa ndi simenti, simenti yaying'ono, kapena ma grout osachepa okhala ndi zowonjezera.
Nthawi yogwiritsira ntchito:
- Ming'alu ndi malo obisika akuluakulu.
- Kukonza malo okhala ndi mabowo kapena opanda kanthu a konkriti.
Ubwino: yoyenera kuchuluka kwakukulu, nthawi zambiri mtengo wake umakhala wotsika mtengo.
Zoletsa: si zabwino monga epoxy pa ming'alu yaying'ono kwambiri; kuwongolera kulowa kwa ming'alu yaying'ono kumakhala kovuta kwambiri.
4. Kukonza ndi Kutseka Njira (Kukulitsa ndi Kutseka Ming'alu)
Njira imeneyi imachitika mwa kukulitsa mng'alu pamwamba (kupanga mng'alu wooneka ngati V kapena U), kenako nkuudzaza ndi elastomeric sealant kapena polymer mortar.
Nthawi yogwiritsira ntchito:
- Ming'alu yopanda kapangidwe pamwamba.
- Ming'alu yaying'ono yogwira ntchito yomwe imafuna zinthu zosinthasintha.
Zipangizo zodziwika bwino: polyurethane sealant, polysulfide, silicone, kapena polymer mortar kutengera zosowa.
Zabwino: zosavuta, zachangu, zoyenera ming'alu yogwira ntchito.
Zoletsa: sizibwezeretsa mphamvu zamkati; zimaganizira kwambiri za kuletsa madzi kulowa m'malo mwake komanso kuteteza pamwamba pake.
5. Kukonza ndi Kukonza Chivundikiro cha Konkire
Pakakhala ming'alu yomwe imabwera chifukwa cha kuchotsedwa kwa konkriti, nthawi zambiri pamakhala dzimbiri la cholimbitsa kapena chivundikiro chofooka cha konkriti. Yankho lake limaphatikizapo kuboola malo owonongeka, kuyeretsa cholimbitsa, kugwiritsa ntchito chomangira, kenako kukulunga ndi matope okonzera.
Magawo onse:
- Kuswa konkire wosalimba kuti ufike ku konkire yathanzi.
– Tsukani cholimbitsacho ku dzimbiri (bulashi wa waya/kuphulika kwa mchenga) ndipo onjezerani cholimbitsacho ngati pali kutayika kwakukulu kwa gawo lonse.
- Kugwiritsa ntchito pulayimale yoteteza dzimbiri kapena njira yodzitetezera.
– Chigamba chopangidwa ndi matope okonzera (chosinthidwa ndi polima, chosachepa, kapena chosakanikira).
- Kukonza bwino kuti zisawonongekenso.
6. Kusoka Kosweka (Kusoka)
Njira yosokera imagwiritsa ntchito zitsulo (U-bar kapena clamps) zomwe zimayikidwa kudutsa mng'alu kuti ziwonjezere mphamvu yotumizira mphamvu ndikuletsa mng'aluwo kukula.
Nthawi yogwiritsira ntchito:
- Ming'alu ya zinthu zomangira zomwe zimafuna "kutseka" kwamakina.
- Ming'alu yayikulu/yokhazikika.
Ubwino: kumawonjezera umphumphu wa makina.
Zoletsa: zimafuna kuboola bwino ndi kukhazikitsa bwino; nthawi zambiri zimaphatikizidwa ndi jakisoni.
7. Kulimbitsa Kwakunja (FRP kapena Jacketing)
Ngati ming'aluyo yachitika chifukwa cha mphamvu yochepa kapena kusintha kwa ntchito ya nyumbayo (kuwonjezeka kwa katundu), kukonza kokha sikokwanira. Kulimbitsa kumafunika, mwachitsanzo pogwiritsa ntchito FRP (Fiber Reinforced Polymer) kapena jekete la konkire/chitsulo pa mizati ndi matabwa.
Nthawi yogwiritsira ntchito:
- Ming'alu ya kapangidwe ka nyumba chifukwa cha katundu wambiri kapena kusowa kwa mphamvu.
– Zinthu ziyenera kuwonjezeredwa mu mphamvu yopindika/yodula/yotsekera.
Ubwino: imatha kuwonjezera mphamvu kwambiri, ntchito yake ndi yachangu (FRP).
Zoletsa: zimafuna kapangidwe koyenera ka uinjiniya; osati ntchito yokongoletsa yokha.
Kusankha Njira Yoyenera
Kusankha njira zokonzera kuyenera kuganizira magawo angapo akuluakulu:
- Kodi ming'aluyo ikugwira ntchito kapena ayi?
- M'lifupi ndi kuzama kwa ming'alu
- Malo ndi ntchito ya zinthu (za kapangidwe kake vs zosapangidwa)
– Mkhalidwe wa chilengedwe (kukhudzana ndi madzi a m'nyanja/chloride, malo onyowa, mankhwala)
- Cholinga chokonza (mphamvu, kulimba kwa madzi, kulimba, kukongola)
- Kupeza, ndalama ndi nthawi yopuma
Mwachitsanzo, ming'alu yopanda kanthu m'mitengo yomwe imafuna kubwezeretsedwa kwa mphamvu ndi yoyenera kwambiri poika epoxy. Komabe, ming'alu m'makoma apansi omwe akutuluka madzi ndi yoyenera kwambiri poika PU. Pakadali pano, ming'alu ya tsitsi mu pulasitala kapena zigawo zosakhazikika zitha kuthetsedwa mokwanira ndi njira yoyendetsera ndi kutseka kapena chophimba choteteza.
Kuletsa Ming'alu Kusabwerezabwereza
Kukonza bwino kuyenera kutsagana ndi njira zodzitetezera, kuphatikizapo:
- Konzani njira zotulutsira madzi ndi zotetezera madzi kuti muchepetse kuthamanga kwa madzi.
- Kukonza konkire mokwanira kuti muchepetse kuphwanyika kwa pulasitiki ndi kuphwanyika koyamba.
- Yang'anirani malo olumikizirana omwe ali pa mbale kuti atsogolere ming'alu yocheperako.
- Chitetezo ku dzimbiri kudzera mu kupaka, zoletsa, kapena kukonza bwino chivundikiro cha konkire.
- Kupanga ndi kuwunika katundu ngati ming'alu ikuwonetsa mavuto a mphamvu.
Kutseka
Njira zokonzera ming'alu m'nyumba za konkire sizingatchulidwe mwachisawawa. Chinsinsi cha kupambana chili pakuzindikira molondola, kusankha njira yoyenera mtundu wa ming'alu ndi zolinga zokonzera, ndikukhazikitsa njirayo motsatira njira zoyenera zaukadaulo komanso mtundu wa zinthu. Ndi njira yokonzedwa bwino—kuyambira kufufuza mpaka kukonza mpaka kupewa—nyumba za konkire zitha kubwezeretsedwanso kuti zigwire ntchito bwino, kukhala ndi moyo wautali, ndikusungidwa kuti zikhale zotetezeka kwa nthawi yayitali.
Ngati mukufuna, nditha kusintha nkhaniyi kuti ikhale yaukadaulo kwambiri (monga kuphatikiza miyezo yofotokozera monga ACI/EN/SNI, tebulo losankhira njira kutengera kukula kwa ming'alu, kapena zitsanzo za kafukufuku wamunda).
