Konkire yochepetsera madzi ndi imodzi mwa njira zaukadaulo zochepetsera mulingo wa simenti, kukonza kagwiritsidwe ntchito ka zinyalala zotsalira m'mafakitale, ndikuzindikira kulimba komanso magwiridwe antchito apamwamba a konkriti.Ndi chimodzi mwazinthu zofunika kwambiri pakupanga konkriti kupita kumunda wapamwamba kwambiri.Ndipo polycarboxylate yochepetsera madzi yamtundu (PC) yakhala ngati njira yabwino yochepetsera madzi yomwe ikukula mwachangu komanso msika waukulu kwambiri chifukwa chakuchepa kwake kawopsedwe komanso kutetezedwa kwa chilengedwe.Poyerekeza ndi zosakaniza zachikhalidwe, zosakanizazo zakhala zomwe zikuyang'ana pa kafukufuku ndi chitukuko chapadziko lonse lapansi chifukwa cha kufalikira kwawo komanso kuthekera kwawo kosungika.
Ngakhale polycarboxylate madzi kuchepetsa admixture ntchito kwambiri ndi luso kusunga kugwa wabwino wakhala ambiri anazindikira, koma chifukwa cha kukhalapo mchere zikuchokera, simenti fineness, simenti pulasitala mawonekedwe ndi okhutira, admixture kuwonjezera kuchuluka, ndi ndondomeko kusakaniza konkire osakaniza chiŵerengero, madzi. ali ndi chidwi kwambiri, amakhudzidwa kwambiri zomwe zilipo zomwe zimagwiritsidwa ntchito kwambiri mu engineering.
Kodi Polycarboxylate Series Water Reducing Agent ndi chiyani?
Polycarboxylate superplasticizer ndi mtundu wa surfactant wokhala ndi carboxylic graft copolymer.Mamolekyu ake ndi owoneka ngati chisa ndipo amakhala ndi cholepheretsa chachikulu.Monga m'badwo wachitatu wa mkulu-ntchito madzi kuchepetsa wothandizila pambuyo lignosulfonate wamba kuchepetsa wothandizila madzi, naphthalene mndandanda aliphatic gulu, sulfamate ndi zina mkulu-mwachangu madzi kuchepetsa wothandizila.
Ndi chifukwa cha mapangidwe a maselo ndi abwino, kuchepetsa kwambiri madzi, kusakaniza kwapang'onopang'ono, kusunga kutsika bwino, kuwonjezera zabwino, kukhala ndi alkali kuchuluka kwachepa, kukhazikitsa nthawi ndi kochepa, komanso kugwirizanitsa simenti ndikwabwino komanso kopanda kuipitsidwa. ubwino wina amaonedwa monga kwambiri chitukuko kuthekera kwa madzi kuchepetsa wothandizila zosiyanasiyana.
Polycarboxylate superplasticizer ndi superplasticizer yatsopano yapamwamba kwambiri yopangidwa ndikupangidwa bwino pambuyo pa naphthalene, melamine, aliphatic ndi sulfamate superplasticizer.M'kati mwake ndi otsika (zolimba 0.15% - 0.25%) zimatha kupanga madzi abwino kuchepetsa ndi kupititsa patsogolo zotsatira, zochepa zomwe zimakhudza nthawi ya konkire ndi kusungirako zowonongeka, kusinthasintha kwa simenti ndi kusakaniza kuli bwino, kukhudzidwa kochepa pa kuyanika. shrinkage ya konkire (kawirikawiri sikumawonjezera kuyanika shrinkage), popanda kugwiritsa ntchito formaldehyde popanga komanso sikutaya zoledzeretsa zoledzeretsa, SO Zomwe zili zochepa za 42- ndi Cl- zayamikiridwa ndi ofufuza ndi ogwiritsa ntchito ena kuyambira chiyambi.
Chifukwa chiyani Polycarboxylate Superplasticizer Iyenera Kusinthidwa?
Poyerekeza ndi naphthalene mndandanda mkulu kothandiza kuchepetsa wothandizila madzi, monga, ngakhale poly carboxylic asidi madzi kuchepetsa wothandizila kuchepetsa kugwa kusamala madzi kugwa ali ndi ubwino zoonekeratu mbali ya chitetezo cha chilengedwe, koma pali mavuto luso mu ntchito zomangamanga zothandiza, monga madzi kuchepetsa zotsatira za zopangira konkire, kusakaniza chiŵerengero, madzi kuchepetsa wothandizila mlingo kudalira ndi lalikulu kwambiri, mwatsopano konkire ntchito tcheru ndi kumwa madzi, kukonzekera mosavuta lalikulu liquidity tsankho wosanjikiza.Kusayenderana bwino ndi zinthu zina zochepetsera madzi ndi zida zosinthidwa komanso kusakhazikika kwazinthu kumalepheretsa kugwiritsa ntchito ndikukula kwa zinthu zochepetsera madzi za polycarboxylate.
Pofuna kuthana ndi zolakwika zaukadaulo pakugwiritsa ntchito mankhwala ochepetsa madzi a polycarboxylate, kapena kukonza zinthu zina kapena zina za konkriti (kugwirira ntchito, kusungika, kuchepa kwa magazi, kusintha kwamphamvu koyambirira, kuchepa pang'ono, etc.), zofunika kusintha konkriti.
M'malo mwake, njira zosinthira zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo ukadaulo wopangira komanso ukadaulo wapawiri.Poyerekeza ndi njira yopangira, njira yophatikizira imakhala ndi ubwino wa ntchito yosavuta komanso yotsika mtengo, choncho imagwiritsidwa ntchito kwambiri pazinthu zothandiza.Polycarboxylate mndandanda pawiri luso, ndi polycarboxylate mndandanda madzi kuchepetsa wothandizira ndi zigawo zina (monga coagulation pang'onopang'ono, defoamy, mpweya kulowetsedwa, mphamvu oyambirira ndi zigawo zina) malinga ndi gawo lina la osakaniza pawiri, kuti tikwaniritse mgwirizano wa pamwamba pa chigawo chilichonse.
Nthawi yotumiza: Jul-01-2022