Kev tawm tsam yog ib qho tseem ceeb ntsuas ntsuas qhov zoo ntawm anti - dispersant.HydroxyPropyyl Methyl celluloseyog dej-soluble polymer sib xyaw, tseem hu ua dej-soluble cob lossis dej-soluble polymer. Nws nce qhov sib xyaw ua ke ntawm cov sib tov los ntawm kev nce qib ntawm cov dej sib tov. Nws yog ib hom ntawm hydrophilic cov khoom, uas tuaj yeem yaj nyob hauv dej thiab ua cov tshuaj daws teeb meem lossis cov kua tawg. Kev sim qhia tias thaum tus nqi ntawm naphthalene system superplastalizer nce ntxiv ntawm cov cortent tshiab tshiab. Qhov no yog vim tias Naphhalene series siab txuag tus neeg sawv cev rau lub ntsej muag rau cov khoom noj khoom haus dej rau ntawm cov khoom noj khoom haus dej sab nrauv. Cov qauv ntawm cov pajas fored tsim los ntawm faib, qhwv hauv cov qauv ntawm cov dej tso tawm, yuav ua rau qhov poob ntawm cov cement. Nyob rau tib lub sijhawm, nws pom tias nrog kev nce HPMC cov ntsiab lus, cov anti dispersion ntawm tshiab cug cap yog qhov zoo dua thiab zoo dua.
Lub zog cov yam ntxwv ntawm cov pob zeb ua:
HPMC Underwater Qhob admixture tau thov rau hauv lub cav uas engineering ntawm kev nthuav dav, thiab kev tsim lub zog yog C25. Tom qab kuaj cov theem pib, cov kev siv tshuaj maas yog 400kg, compound sib xyaw silica fume 25kg / m3,HPMC0.6% ntawm kev siv cov paases, cov caas digital recioed tus neeg sawv cev hauv nruab nrab yog 40d, lub zog nruab nrab yog 42.6MPA, tus Qhov nruab nrab lub zog ntawm lub underwater poured qhob nrog lub siab poob hauv dej thiab cov pob zeb ua tiav hauv huab cua yog 84.8%, uas qhia tias muaj cov nyhuv tseem ceeb.
1. Qhov kev sib ntxiv ntawm HPMC muaj qhov pom tseeb retarding cuam tshuam ntawm coll sib xyaw. Nrog rau kev nce HPMC ntau npaum li cas, lub sijhawm teem lub sij hawm cug yog lub sijhawm ntev. Raws li tib qho xwm txheej ntawm HPMC ntau npaum li cas, lub sij hawm teeb lub sij hawm underwater tshuaj ntev ntev tshaj li ntawm huab cua. Cov yam ntxwv no tau txais txiaj ntsig rau hauv qab dej ua ke twj tso kua mis.
2, tov nrog hydroxypropal methyl cellulose ntawm tshiab cephars muaj cohesion zoo, yuav luag tsis muaj los ntshav tshwm sim.
3, HPMC noj thiab tshuaj khib dej xav tau ua ntej poob thiab tom qab nce ntau.
4. Qhov txuam nrog cov roj reducer txhim kho cov teeb meem ntawm kev nce dej cug, txwv tsis pub nws yuav muaj cov dej hauv qab no ntawm cov ceg tawv xis.
5. Muaj me ntsis sib txawv hauv HPMC sib xyaw ci ntsa iab thiab cov hnoos qeev thiab kev sib cav sib ceg, thiab muaj huab cua nyob rau sab qab ceeb qaub. Lub 28D Underwater cov hnoos qeev yog qhov xoob xoob me ntsis. Qhov laj thawj tseem ceeb yog qhov ntxiv ntawm HPMC ntau ntau txo qhov poob thiab dispersion ntawm cov hmoov av pouring, tab sis kuj tseem ua kom muaj kev sib xyaw ua ke xis mas. Hauv txoj haujlwm, hauv qab cov xwm txheej ntawm kev ua kom muaj kev cuam tshuam hauv qab dej tsis-dispersion nyhuv, cov kev sib xyaw HPMC raug txo kom deb li sai tau.
6, ntxivHPMCUnderwater tsis distianers ua admixture, tswj tus nqi ntawm lub zog zoo, kev sim ua vaj tse nyob hauv huab cua yog 84.8%, cov nyhuv muaj txiaj ntsig ntau dua.
Lub Sijhawm Post: Apr-25-2024