Chochepetsa madzi cha polycarboxylate(PCE)ndi mtundu watsopano wa chochepetsera madzi choteteza chilengedwe, chomwe chagwiritsidwa ntchito kwambiri pazinthu zosiyanasiyana za konkriti, makamaka popanga zinthu za konkriti zokonzedwa kale. Ndi kupita patsogolo kwa mafakitale omanga, zinthu zopangidwa kale zakula mofulumira m'magawo a nyumba, mayendedwe, kayendetsedwe ka boma, ndi zina zotero, ndipo ufa wa PCE wakhala chimodzi mwazinthu zofunika kwambiri pakukweza ubwino ndi magwiridwe antchito a zinthu zopangidwa kale chifukwa cha magwiridwe antchito ake abwino komanso kusinthasintha kwake.
1. Chiyambi cha ufa wa PCE
Ufa wa PCE ndi mtundu wolimba wa polycarboxylate wochepetsera madzi womwe umatha kusungunuka bwino, kusungunuka bwino komanso kugwirizana bwino. Poyerekeza ndi PCE yamadzimadzi, ufa wa PCE ndi wosavuta kunyamula ndikusunga, woyenera kugwiritsidwa ntchito mu matope osakanikirana ndi owuma, zipangizo zomangira ufa wouma komanso malo opanda madzi, makamaka oyenera zosowa za konkriti yopangidwa kale yopangidwa ndi fakitale komanso yopangidwa ndi anthu ambiri.
2. Makhalidwe ndi zovuta za konkriti yokonzedwa kale
Zinthu zopangidwa ndi konkriti yokonzedwa kale zimaphatikizapo matabwa okonzedwa kale, mapanelo okonzedwa kale, masitepe okonzedwa kale, zogona, magawo a mapaipi, ndi zina zotero. Zigawozi zili ndi makhalidwe awa:
Zofunikira pa mphamvu yayikulu: Konkire imafunika kuti ikhale ndi mphamvu yayikulu yoyambirira komanso yomaliza kuti ifulumizitse ntchito yochotsa zinthu ndi kupita patsogolo kwa mayendedwe.
Kusinthasintha kwabwino: Makamaka pa konkriti yodzipangira yokha (SCC) yomwe imagwiritsidwa ntchito popanga nkhungu, kusinthasintha kwabwino kuyenera kusungidwa kuti zitsimikizire kuchulukana ndi mawonekedwe abwino.
Kumanga mwachangu: Konkire imafunika kuti pakhale mphamvu yofulumira, zomwe zimathandiza kuti ntchito yomanga ikhale yogwira mtima.
Kulondola kwakukulu: Kufunika kwa kutayika pang'ono kwa konkriti ndikowonekera kwambiri.
Chifukwa chake, zofunikira zazikulu zimaperekedwa kwa ochepetsa madzi, kutanthauza kuti, kuchuluka kwa madzi ocheperako, kusunga bwino kutsika kwa madzi ndi nthawi yowongolera ndikofunikira.
3. Ubwino wa ufa wa PCE mu konkire yokonzedwa kale
3.1. Kugwira ntchito bwino kwambiri pochepetsa madzi
Ufa wa PCE uli ndi mphamvu yabwino kwambiri yofalitsira zinthu. Umatha kukulunga ndi kufalitsa tinthu ta simenti kudzera mu unyolo waukulu ndi kapangidwe ka unyolo wa m'mbali mwa kapangidwe ka mamolekyu, ndipo umatha kuchepetsa madzi ndi kupitirira 20% pa mlingo wochepa. Izi zimathandiza kukonza kukhuthala ndi mphamvu ya simenti ndikukwaniritsa zofunikira zapamwamba za zida zopangidwira kale.
3.2. Kugwira ntchito bwino kwambiri koteteza kutsika kwa nthaka
Kupanga konkire yokonzedwa kale nthawi zambiri kumafuna kusakaniza ndi kunyamula kupita kumalo othira, zomwe zimafuna kuti konkireyo ikhalebe ndi madzi okwanira kwa nthawi inayake. Ufa wa PCE uli ndi mphamvu yogawanikirana, zomwe zimachedwetsa kutayika kwa madzi pamene zimapewa kutayika kwa madzi mwachangu, zomwe zimaonetsetsa kuti konkire ikugwira ntchito nthawi yonse yomanga.
3.3. Konzani mphamvu zoyambira
Ufa wa PCE umathandizira kuti chiŵerengero cha mkati mwa konkire chikhale bwino komanso kuti simenti ikhale ndi mphamvu zambiri, komanso kuti simenti ikhale ndi madzi ambiri, zomwe zimathandiza kuti simenti ikhale ndi mphamvu zambiri. Izi zimathandiza kwambiri popanga zinthu zoyambira, zomwe zimathandiza kuti simenti ikhale ndi mphamvu zambiri komanso kuti simenti ikhale ndi mphamvu zambiri. Izi zimathandiza kwambiri popanga zinthu zoyambira, kuchepetsa nthawi yopangira zinthu zoyambira komanso kukonza bwino ntchito yopangira zinthu zoyambira.
3.4. Kugwirizana bwino ndi zinthu zosiyanasiyana zolimbitsa simenti
Ufa wa PCE umasinthasintha bwino ku mitundu yosiyanasiyana ya simenti ndi zosakaniza (monga phulusa la ntchentche, slag, silika fume, ndi zina zotero), ndipo ndi woyenera mapangidwe osiyanasiyana osakaniza. Ukhoza kusinthidwa mosavuta malinga ndi zofunikira za polojekiti kuti uwonjezere magwiridwe antchito onse a konkire.
3.5. Kuteteza chilengedwe ndi ubwino wochepa wa mpweya woipa
Ufa wa PCE ndi woteteza chilengedwe ndipo ulibe zosakaniza zoopsa. Mphamvu yake yabwino kwambiri yochepetsera madzi imatha kuchepetsa kugwiritsa ntchito madzi ndi simenti, motero imachepetsa mpweya woipa wa konkire, zomwe zikugwirizana ndi momwe nyumba zobiriwira zimakhalira komanso chitukuko chokhazikika.
4. Makhalidwe enieni ogwiritsira ntchito ufa wa PCE m'zigawo zokonzedweratu
Konkire yogawa magawo: Zigawo zomwe zimagwiritsidwa ntchito m'matanthwe oteteza zimafuna mphamvu zambiri, kuchepa pang'ono, komanso mphamvu yoyambirira ya konkire. Kugwiritsa ntchito ufa wa PCE kungatsimikizire kuti zigawozo zimakhala zabwino, zolimba komanso zogwira mtima.
Kupanga zogona: Zogona ziyenera kupirira katundu waukulu, zomwe zimafuna kuti konkriti ikhale yolimba komanso yolimba. Kuchuluka kwa madzi komwe kumachepetsa ufa wa PCE kumathandiza kulimbitsa mphamvu ndi kulimba.
Mapanelo a makoma okonzedwa kale: Mapanelo a makoma okonzedwa kale omwe amagwiritsidwa ntchito m'nyumba zokhalamo zomwe zakonzedwa kale amafunika kukhala abwino pamwamba komanso kulondola kwa miyeso. Kugwiritsa ntchito ufa wa PCE kungathandize kwambiri kuti konkire ipange mawonekedwe apamwamba.
Zigawo za PC (konkriti yokonzedwa kale): Kugwiritsa ntchito ufa wa PCE m'zigawo monga matabwa okonzedwa kale ndi masitepe kungatsimikizire kuti kupanga zinthu zambiri kumakhala kokhazikika komanso kokhazikika komanso kupititsa patsogolo magwiridwe antchito omanga.
5. Malangizo Ogwiritsira Ntchito
Kuwongolera Mlingo: Nthawi zambiri amalangizidwa kuti mlingo wa ufa wa PCE ukhale 0.1% ~ 0.3% ya kulemera kwa zinthu zomangira simenti. Mlingo weniweni uyenera kutsimikiziridwa malinga ndi zipangizo zopangira ndi mayeso ofunikira.
Malo Osungira: Ufa uyenera kusungidwa pamalo ouma kuti usalowe chinyezi ndi kusonkhana, zomwe zingakhudze magwiridwe antchito.
Kuyesa kuyanjana ndi zinthu zina zosakanikirana: Kuyesa kuyanjana ndikofunikira mukamagwiritsa ntchito zinthu zina zosakanikirana (monga zotsalira ndi zowonjezera) kuti mupewe kulephera kugwira ntchito.
Ufa wa PCEchakhala chinthu chofunikira kwambiri pakupanga konkriti yokonzedwa kale chifukwa cha ubwino wake wothandiza kwambiri pochepetsa madzi, kuteteza kugwa, mphamvu yoyambirira komanso kuteteza chilengedwe. M'tsogolomu, ndi chitukuko cha mafakitale a nyumba ndi zipangizo zomangira zobiriwira, zofunikira pakugwira ntchito kwa zigawo zokonzedwa kale zidzakhala zapamwamba, ndipo ufa wa PCE upitiliza kugwira ntchito yofunika kwambiri pakukonza magwiridwe antchito ndi malamulo anzeru, kupereka chithandizo champhamvu pakukweza khalidwe la zigawo zokonzedwa kale komanso kusintha magwiridwe antchito a nyumba.
Nthawi yotumizira: Julayi-02-2025