Juriyawar watsawa shine muhimmin ma'aunin fasaha don auna ingancin anti-dispersant.Hydroxypropyl methyl cellulose wani fili ne mai narkewar ruwa, wanda kuma aka sani da guduro mai narkewa ko ruwa mai narkewa.Yana ƙara daidaituwar cakuda ta hanyar ƙara danko na ruwan hadewa.Yana da wani nau'i na nau'in polymer na hydrophilic, wanda za'a iya narkar da shi a cikin ruwa kuma ya samar da wani bayani ko ruwa mai rarraba.Gwaje-gwaje sun nuna cewa lokacin da adadin naphthalene tsarin superplasticizer ya karu, ƙari na superplasticizer zai rage juriya na tarwatsa sabon turmi siminti.Wannan shi ne saboda naphthalene jerin high m ruwa rage wakili nasa ne da surface aiki wakili, a lõkacin da ruwa rage wakili kara da turmi, da ruwa rage wakili a cikin ciminti barbashi surface daidaitacce surface na ciminti barbashi da wannan cajin, da lantarki repulsion flocculation. tsarin siminti da aka kafa ta hanyar rarrabawa, kunsa a cikin tsarin sakin ruwa, zai haifar da asarar ɓangaren siminti.A lokaci guda kuma, an gano cewa tare da karuwar abun ciki na HPMC, maganin tarwatsewar sabon turmi siminti ya fi kyau kuma mafi kyau.
Halayen ƙarfi na kankare:
HPMC karkashin ruwa mara tarwatsa kankare admixture aka yi amfani a cikin gada kafuwar injiniya na expressway, da zane ƙarfin sa ya C25.Bayan ainihin gwajin, siminti sashi ne 400kg, fili gauraye silica fume 25kg/m3, HPMC ganiya sashi ne 0.6% na siminti sashi, ruwa ciminti rabo ne 0.42, yashi kudi ne 40%, naphthalene high dace ruwa rage wakili yawan amfanin ƙasa ne 8% na siminti sashi, da kankare samfurin a cikin iska 28d, da matsakaita ƙarfi ne 42.6MPa, Matsakaicin ƙarfi na karkashin ruwa zuba kankare tare da fadowa tsawo na 60mm a cikin ruwa ne 36.4mpa for 28 days, da kuma ƙarfin rabo daga cikin kankare kafa a ruwa da kankare da aka kafa a cikin iska shine 84.8%, yana nuna tasiri mai mahimmanci.
1. Bugu da kari na HPMC yana da fili retarding sakamako a kan turmi cakuda.Tare da karuwar adadin HPMC, lokacin saita turmi yana tsawaita a jere.Ƙarƙashin yanayin daidaitaccen adadin HPMC, lokacin saita turmi ƙarƙashin ruwa ya fi na iska.Wannan fasalin yana da fa'ida don yin famfo da kankare a karkashin ruwa.
2, gauraye da hydroxypropyl methyl cellulose na sabobin turmi siminti yana da haɗin kai mai kyau, kusan babu wani abu na jini.
3, Yawan adadin HPMC da buƙatun ruwa na turmi ya fara raguwa sannan ya karu sosai.
4. Haɗa na'urar rage ruwa yana inganta matsalar ƙara yawan buƙatun ruwa na turmi, amma dole ne a sarrafa shi cikin hankali, in ba haka ba wani lokaci zai rage juriyar watsawar ruwa na sabon turmi siminti.
5. Akwai ɗan bambanci a cikin tsari tsakanin HPMC gauraye siminti net slurry samfurori da kuma blank samfurori, kuma akwai kadan bambanci a tsari da compactness tsakanin ruwa zuba siminti samfurori da iska zuba siminti net slurry samfurori.Samfurin gyare-gyaren ruwa na 28d yana ɗan sako-sako.Babban dalili kuwa shi ne, kara na HPMC yana matukar rage asara da tarwatsewar siminti a lokacin da ake zuba ruwa, amma kuma yana rage yawan aikin siminti.A cikin aikin, a ƙarƙashin yanayin tabbatar da tasirin da ba ya tarwatsewar ruwa, ana rage yawan haɗakarwar HPMC gwargwadon yiwuwa.
6, ƙara HPMC karkashin ruwa ba ya watsar da kankare admixture, sarrafa adadin mai kyau ƙarfi, da matukin jirgi aikin ya nuna cewa ƙarfi rabo na kafa kankare a cikin ruwa da kuma kafa a cikin iska ne 84.8%, sakamakon ya fi muhimmanci.
Lokacin aikawa: Satumba-17-2022