Ginin injina na plastering turmi ya sami ci gaba a cikin 'yan shekarun nan. Har ila yau, turmi plastering ya samo asali daga wurin gargajiya na hada kai zuwa turmi mai bushe-bushe da rigar gaurayawa. Mafi girman aikin sa da kwanciyar hankali sune mahimman abubuwan don haɓaka haɓakar plastering injiniyoyi, kuma ana amfani da ether cellulose azaman plastering turmi Babban ƙari yana da rawar da ba za a iya maye gurbinsa ba. A cikin wannan gwaji, ta hanyar daidaita danko da riƙewar ruwa na cellulose ether, kuma ta hanyar gyare-gyare na roba, sakamakon gwajin gwaje-gwaje irin su yawan ajiyar ruwa, asarar daidaito na 2h, lokacin budewa, juriya na sag, da ruwa na plastering turmi a kan ginin gine-gine. yayi karatu. A ƙarshe, an gano cewa ether cellulose yana da halaye na yawan riƙon ruwa da kuma kayan nade mai kyau, kuma ya dace musamman don aikin injin gyare-gyare na plastering, kuma duk alamomin plastering turmi sun cika ka'idodin ƙasa.
Adadin riƙe ruwa na plastering turmi
Adadin riƙe ruwa na plastering turmi yana ƙaruwa yayin da dankon cellulose ether ya kasance daga 50,000 zuwa 100,000, kuma yana da raguwa lokacin da ya kasance daga 100,000 zuwa 200,000, yayin da adadin yawan ruwa na cellulose ether don feshin inji ya kai. fiye da 93%. Mafi girman adadin ajiyar ruwa na turmi, ƙananan yuwuwar turmi zai zubar da jini. A lokacin gwajin feshin na'urar feshin turmi, an gano cewa idan yawan ruwa na cellulose ether ya ragu da kashi 92%, turmin yana saurin zubar jini bayan an sanya shi na wani lokaci, kuma, a farkon feshin. , yana da sauƙi musamman don toshe bututu. Sabili da haka, lokacin shirya turmi mai laushi wanda ya dace da ginin injiniyoyi, ya kamata mu zaɓi ether cellulose tare da ƙimar riƙe ruwa mafi girma.
Tumi plastering 2h asarar daidaito
Dangane da buƙatun GB/T25181-2010 “Tabbatar Haɗaɗɗen Turmi”, ƙimar daidaiton sa'o'i biyu na buƙatun turmi plastering na yau da kullun bai wuce 30%. An yi amfani da danko na 50,000, 100,000, 150,000, da 200,000 don gwaje-gwajen asarar daidaito na 2h. Ana iya ganin cewa yayin da danko na cellulose ether ya karu, ƙimar hasarar daidaituwa ta 2h na turmi za ta ragu sannu a hankali, wanda kuma ya nuna cewa danko na ether cellulose Mafi girman darajar, mafi kyawun daidaito na turmi kuma mafi kyau. aikin anti-delamination na turmi. Duk da haka, a lokacin ainihin spraying, an gano cewa a lokacin gyaran gyaran fuska na baya, saboda danko na ether cellulose ya yi yawa, haɗin kai tsakanin turmi da trowel zai fi girma, wanda ba shi da amfani ga ginawa. Sabili da haka, a cikin yanayin tabbatar da cewa turmi ba ya daidaita kuma baya lalatawa, ƙananan ƙimar danko na ether cellulose, mafi kyau.
Sa'o'in buɗe turmi plastering
Bayan da aka fesa turmi a bango, saboda shayar da ruwa na bangon bangon da kuma fitar da danshi a saman turmi, turmin zai samar da wani ƙarfi a cikin ɗan gajeren lokaci, wanda zai yi tasiri ga ginin matakin da ya biyo baya. . An yi nazarin lokacin zubar jini. Matsakaicin darajar cellulose ether yana cikin kewayon 100,000 zuwa 200,000, lokacin saitawa ba ya canzawa sosai, kuma yana da ƙayyadaddun alaƙa tare da ƙimar riƙewar ruwa, wato, mafi girman adadin ajiyar ruwa, mafi tsayi. lokacin saita turmi.
Ruwan ruwa na plastering turmi
Asarar kayan aikin fesa yana da alaƙa da ruwa mai yawa na plastering turmi. A ƙarƙashin wannan rabo na ruwa-material rabo, mafi girma da danko na cellulose ether, da ƙananan fluidity darajar turmi. , wanda ke nufin cewa mafi girma danko na cellulose ether, mafi girma juriya na turmi da kuma mafi girma lalacewa a kan kayan aiki. Sabili da haka, don aikin injiniya na plastering turmi, ƙananan danko na ether cellulose ya fi kyau.
Sag juriya na plastering turmi
Bayan an fesa turmin da ake yi a bango, idan juriyar turmin ba ta yi kyau ba, turmin zai yi kasala ko ma ya zube, wanda hakan zai yi matukar tasiri ga shimfidar turmin, wanda zai haifar da babbar matsala ga ginin daga baya. Don haka, turmi mai kyau dole ne ya sami kyakkyawan juriya na thixotropy da sag. Gwajin ya gano cewa bayan da aka gina eter cellulose mai danko 50,000 da 100,000 a tsaye, tiles din sun zame kai tsaye, yayin da ether din cellulose mai danko 150,000 da 200,000 bai zame ba. Har yanzu kusurwa yana tsaye a tsaye, kuma babu zamewa da zai faru.
Ƙarfin plastering turmi
Yin amfani da 50,000, 100,000, 150,000, 200,000, da 250,000 cellulose ethers don shirya plastering turmi samfurori don aikin injiniya, an gano cewa tare da karuwar cellulose ether danko, ƙarfin darajar plastering turmi ƙasa. Wannan shi ne saboda cellulose ether yana samar da wani babban bayani mai zurfi a cikin ruwa, kuma za a gabatar da adadi mai yawa na kumfa na iska yayin da ake hadawa da turmi. Bayan da siminti ya taurare, waɗannan kumfa na iska za su samar da ɓangarorin da yawa, ta yadda za su rage ƙarfin ƙarfin turmi. Sabili da haka, turmi mai laushi wanda ya dace da ginin injiniyoyi dole ne ya dace da ƙimar ƙarfin da ake buƙata ta ƙira, kuma dole ne a zaɓi ether cellulose mai dacewa.
Lokacin aikawa: Maris 15-2023