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Mavuto omwe amapezeka pakugwiritsa ntchito polycarboxylic acid admixtures
Mukugwiritsa ntchito polycarboxylic plasticity, nthawi zina amakumana ndi zovuta ngati izi, ndipo mavuto ena sanakwaniritsidwe pogwiritsira ntchito mankhwala ochepetsera madzi. Mwachitsanzo, nthawi zina fakitale imagwa, madzimadzi, ndi kusunga madzi ndi kwabwino, koma zochitika ziwiri zoopsa zimachitika pakapita nthawi.
Kapena kusakaniza konkire kumakhala kouma kwambiri, ndipo kutulutsako kumapweteka, kapena kutuluka magazi kwambiri, tsankho, ndipo delamination ndi serious.
Pali zifukwa zambiri zamavuto ogwiritsira ntchito polycarboxylic acid konkire plasticizer. Mbali inayi, ubwino wa polycarboxylic acid kuchepetsa wothandizila madzi ndi wosakhazikika, ndi mitundu yosiyanasiyana ya zopangira zopangira zimayambitsa kusinthasintha kwakukulu kwazinthu. Mlingo waukadaulo, kupanga ndondomeko, ndi njira zoyendetsera bwino za polycarboxylic acid kuchepetsa madzi osakaniza makampani opanga sanatsimikizire khalidwe.
Mbali inayi, kusinthasintha kwa zinthu zopangira konkriti kunayambitsa kusintha kosinthika ndi polycarboxylic acid,
Chonde tchulani zotsatirazi:
(1) simenti. The mankhwala zigawo zikuluzikulu za simenti, mtundu wa gypsum, zothandizira kugaya, kuchuluka kwa zinthu zosakanikirana komanso zosagwira ntchito, zinthu za alkali, ubwino, ndi kutentha pa ntchito zonse zidzakhudza kusinthika kwa polycarboxylic acid zochepetsera madzi. Nthawi zina kusintha kwakung'ono kungayambitse kusintha kwakukulu kwa katundu weniweni. Choncho, sikoyenera kusintha simenti nthawi zambiri pakupanga kwenikweni. Kusankha simenti yokhala ndi khalidwe lodalirika komanso khalidwe lokhazikika ndilofunika kuti mutsimikizire khalidwe la konkire.
(2) Matope omwe ali owumbidwa bwino komanso ophatikizika bwino amakhala ndi chikoka chofunikira pakusinthika kwa chochepetsera madzi cha polycarboxylic acid.. Pamene matope zili aggregates akuwonjezeka, rheological katundu wa konkire adzakhala kawiri, kumabweretsa kusakaniza konkire. Kuwongolera khalidwe lazinthu ndizovuta.
(3) Kutaya kuyatsa ndi fineness wa admixture (mineral powder, kuwuluka phulusa) zimakhudzanso kusinthika kwa polycarboxylic acid kuchepetsa wothandizila madzi. Pamene kuchuluka kwa moto imfa yaikulu, polycarboxylic acid polycarboxylate superplasticizers adzakhala adsorbed, kuchititsa Kutaya kwa kugwa kwa konkire kusakaniza kumathamanga.
Kusamala mukamagwiritsa ntchito polycarboxylic acid superplasticizer admixture
(1) Kuwongolera koyenera pakugwiritsa ntchito madzi
Polycarboxylic acid superplasticizers amakhudzidwa kwambiri ndi kumwa madzi, makamaka mukamagwiritsa ntchito ma superplasticizer okhala ndi zinthu zolimba kwambiri. Panthawi yoyeserera ndi kupanga, zinapezeka kuti nthawi zina kumwa madzi kumawonjezeka pang'ono ndi 1kg ~ 3kg, ndipo kusakaniza konkire kukanakhala ndi magazi aakulu, anaunjika miyala yoonekera, nagwira pansi. Choncho, mukupanga, mbali inayi, kumwa madzi kwa phwando limodzi kumayendetsedwa mosamalitsa, ndipo chinyezi cha mchenga ndi miyala chimawerengedwa molondola. Mchenga womwe watsuka kumene uyenera kusiyidwa kwa nthawi ndithu ndipo ugwiritsidwe ntchito pamene chinyezi chakhazikika. Mbali inayi, otsika olimba polycarboxylic acid kuchepetsa madzi wothandizila ntchito kuchepetsa tcheru.
(2) Gwiritsani ntchito kuchuluka kwa polycarboxylic acid
Mlingo woyenera umatsimikiziridwa kudzera mu mayeso panthawi yogwiritsira ntchito. Pamene mlingo uli wochepa, kusungika kwa konkriti kumakhala kosavuta, kuchepa kwamphamvu kuli mwachangu, ndipo fluidity imakhala yosauka. Pamene mlingo ndi waukulu kwambiri, kusakaniza konkire kungayambitse magazi kwambiri, tsankho, Tengani pansi. Asanayambe kupanga, muyenera kuyesa malo oyenera odulidwa a madzi a konkire ndi kuchuluka kwa polycarboxylic acid plasticizer ndi superplasticizer agent, kuti, kuchuluka koyenera kwa madzi ndi kusakaniza. Nthawi yomweyo, tcherani khutu pakuwongolera kusinthasintha kwa zinthu zopangira ndikusakaniza kwa polycarboxylic acid wothandizira. Zotsatira za kuchuluka kwake. Zida zomwe zimagwiritsidwa ntchito mu polojekitiyi ziyenera kugwiritsidwa ntchito poyesa kuti zithandizire kuwongolera kupanga. Ngati kuli kofunikira, malo omanga malo ayenera kufaniziridwa molingana ndi zofunikira zomanga.
(3) Yesetsani kuswa malingaliro achikhalidwe
Popanga magiredi apamwamba kwambiri, timayesetsa kuthana ndi vuto logwiritsa ntchito simenti yambiri komanso mchere wocheperako. Tikukhulupirira kuti izi ndi zotetezeka, ndipo mphamvuyo idzakhala yapamwamba. Apo ayi, kuchuluka kwa simenti kumakhala kokhuthala, ndipo mphamvu ya konkire imakula mofulumira kumayambiriro, ndipo kukula mu nthawi yamtsogolo kumakhala pang'onopang'ono kapena ayi. Nthawi zina kuwonjezera 30kg ya simenti kumakhala mphamvu yofanana ndi konkire popanda kuwonjezera simenti, ndipo nthawi zina ndibwino kuti musawonjezere. Moyenera kuonjezera kuchuluka kwa mchere kusakanizika adzawonjezera mphamvu konkire ndi 5% ku 10%, ndipo kuwonjezereka kwamphamvu kwa nthawi yamtsogolo kumakhutiritsanso. Zidzathandiza kuchepetsa kutentha kwa hydration, kuteteza ming'alu, ndi kusintha durability.
(4) Zosakaniza zochokera ku Naphthalene ndizoletsedwa
Makampani omwe amagwiritsa ntchito ma superplasticizer okhala ndi naphthalene komanso polycarboxylic acid-based superplasticizers, ngati zinthu zilola, amagwiritsidwa ntchito bwino pamasiteshoni osiyanasiyana. Ngati gawo lomwelo lili ndi polycarboxylic acid ndi naphthalene-based, zikagwiritsidwa ntchito mosiyana, The admixture masekeli chidebe, mapaipi ndi chosakanizira amatsukidwa bwino, komanso tanki ya konkire iyeneranso kutsukidwa ndikudzazidwanso. Ndizoletsedwa kusakaniza superplasticizer ya naphthalene ndi polycarboxylic acid superplasticizer., makamaka pamalo omanga, pamene njira ya “kuwonjezera zosakaniza” chofunika kusintha workability wa konkire osakaniza, konkire mkati mwa galimotoyo iyenera kumveka bwino. Mitundu ya admixtures ntchito akhoza kupewa “kuyika mwachangu” wa konkire chifukwa cha kusanganikirana, zomwe zimapangitsa kuti konkriti yagalimoto ichotsedwe.
(5) Limbitsani kuyendera
Pamene polycarboxylic acid kuchepetsa wothandizila madzi analandira, choyamba yang'anani zizindikiro zosiyanasiyana zaumisiri za wothandizira kuchepetsa madzi kuti mutsimikizire kukhazikika kwa khalidwe. Kachiwiri, zopangira ntchito ziyenera kusankhidwa, ndipo chiŵerengero chosakaniza chopanga chiyenera kugwiritsidwa ntchito poyesa. Ngati mavuto apezeka, ogwira ntchito zaukadaulo zamakampani opanga ma admixture ayenera kusinthidwa munthawi yake.
(6) Kuyankhulana kwanthawi yake ndi gawo lomanga
Pamaso kupanga konkire, phwando la zomangamanga liyenera kudziwitsidwa za zofunikira zaumisiri za konkire.
Mtunda wamayendedwe, ntchito yomanga, ndi kutentha kwatsiku, ndipo ngati kuli kofunikira, pitani kumalo ogwirira ntchito kuti mukawone malo kuti mumvetsetse njira yopopera konkire, kaya mayendedwe a mapaipi ndi oyenera, ndi kugawidwa kwazitsulo zazitsulo.
Ubwino wa gulu la ogwira ntchito ndi zomangamanga la gawo lomangali lidzaperekedwa moyenera, ndipo magalimoto adzatumizidwa malinga ndi momwe zilili.
(7) Wodziwika bwino ndi mawonekedwe a polycarboxylic acid plasticizer ndi superplasticizer yogwiritsidwa ntchito
Kupyolera mu zoyesera, malamulo osintha a polycarboxylic acid ochepetsa madzi popanga konkriti kupanga-kupanga-kupanga akufotokozedwa mwachidule, zomwe ndi zabwino pothana ndi zoopsa. Onani malamulowa poyesa ndi kupanga, sonkhanitsani zochitika, ndikupangira mwachangu njira zothetsera vuto ngati zitasintha mwadzidzidzi m'malo olimba, kupewa kuwononga kwambiri, ndi kukwaniritsa “munthawi yake, sayansi, ndi zomveka.”
Kuchepetsa madzi a polycarboxylic acid kudzagwiritsidwa ntchito mu simenti ya thovu ndi simenti wamba. Ngati superplasticizer ikugwiritsidwa ntchito moyenera, ithandizanso kukulitsa pulasitiki mu simenti. Onetsetsani kuti mukuwongolera njira ndi kuchuluka kwa polycarboxylate superplasticizer mosamalitsa.Kotero kuti zotsatira za ndalama zochepa komanso zimakhudza kwambiri.
Cie-China.org ndiye wotsogola wotsogola wa konkriti wa thovu yemwe amapereka thovu la konkriti, superplasticizer,thovu konkire mphamvu zowonjezera kwa wopepuka konkire, Zolemba za CLC. Ngati mukuyang'ana superplasticizer, chonde khalani omasuka Lumikizanani nafe.