Yanayin da ake ciki a yanzu na Binciken Amfani da Tashin Kura a Injiniyan Hanya

Amfani da tokar tashi a cikin tushen shimfidar ƙasa galibi yana da yawa a fannoni biyu: kayan da aka daidaita da tokar tashi (lime da fly tosh) da kayan da aka daidaita da tokar tashi a siminti. An tattara waɗannan kayan guda biyu zuwa ƙa'idodin ƙasa, fasahar ta yi kyau sosai, kuma akwai aikace-aikace da yawa masu amfani. Aiwatar da tokar tashi a saman shimfidar ƙasa galibi shine saman cakuda kwalta da saman siminti na siminti. Binciken da Jiao Hua na Jami'ar Chang'an ya yi a cikin takardar digirinsa ta biyu ya nuna cewa lokacin da tokar tashi ta maye gurbin duk foda na ma'adinai a cikin cakuda kwalta AC-16, yana da ƙarancin juriya ga fashewar ƙasa da kuma kwanciyar hankali mai zafi fiye da wanda aka haɗa da foda na ma'adinai. An inganta daidaiton ruwa amma tasirin bai yi fice ba. Xie Jun, Wu Shaopeng, da sauransu sun yi nazarin tasirin maganin saman ash da wakilin haɗawa akan lalacewar danshi na cakuda kwalta. Haɗa cikawa da wakilin haɗawa da tokar tashi ana kiransa mai gyara tokar tashi mai haɗaka. Abubuwan da ke cikin gyaran tokar tashi mai haɗaka galibi an siffanta su ne ta hanyar amfani da na'urar duba electron microscopy da kuma na'urar duba infrared ta Fourier transform. A matsayin abin cikawa, an kimanta tasirinsa akan ƙarfin danshi na gaurayen kwalta ta hanyar gwaje-gwajen ƙarfin danshi na asfalt, gwajin tsinken tsaye, da gwaje-gwajen gajiyar danshi ta hanyar kai tsaye. Sakamakon ya nuna cewa gaurayen kwalta tare da mai gyara tokar tashi mai haɗaka yana da ƙarfin danshi mai yawa da kuma ƙarfin danshi a lokacin sanyi kuma yana da kyakkyawan yanayin danshi. Bugu da ƙari, gaurayen kwalta mai gyara tokar tashi mai haɗaka ya nuna mafi kyawun yanayin tauri, juriya ga nakasa mai ɗorewa, da kuma tsawon lokacin gajiya bayan takamaiman maganin lalacewar danshi. Kammalawa: Mai gyara tokar tashi mai haɗaka zai iya inganta yanayin danshi na gaurayen kwalta yadda ya kamata.

Ana kuma amfani da ramukan tokar kwari sosai a fannin injiniyan hanya, musamman a sassan hanyoyi na tushe mai laushi na ƙasa. Yana iya amfani da nauyin tokar kwari sosai don rage nauyin da ke kan bangon da kuma ƙarin matsin lamba na tushe mai laushi na ƙasa, ta haka ne rage cikakken daidaito da inganta daidaiton gefen. Hakazalika, cike tokar kwari da ƙasa mai cike da ruwa a kan gadar zai iya inganta matsalar tsalle-tsallen saman gadar da wurin da aka gina sakamakon nauyin da ke kan saman gadar da ke kan saman gadar ya haifar. Liu Tiejun ya yi nazarin halayen injinan tokar kwari da ake amfani da su a matsayin cika bakin kuma ya kai ga ƙarshe kamar haka: bushewar tokar kwari ta nuna yanayin ƙaruwa da farko sannan raguwa tare da ƙaruwar danshi, kuma matsakaicin yawan danshi busasshe shine 19%; Matsakaicin yawan tokar kwal yana raguwa sosai tare da ƙaruwar yawan busasshe. Lokacin da busasshen tokar kwari ya ƙasa da 1.35g/cm3, yawan busasshe ba shi da wani tasiri a kan yawan shigarsa; Haɗin tokar kwari yana ƙaruwa tare da yawan ruwa Lokacin da danshi na tokar kwari yana ƙaruwa da raguwa, kuma raguwar ta yi jinkiri lokacin da danshi ya ƙasa da kashi 26%, in ba haka ba yana raguwa da sauri; lokacin da danshi na tokar kwari ya ƙaru da kashi 1%, kusurwar gogayya ta ciki tana raguwa da kusan kashi 0.25°; Haɗin tokar kwal yana ƙaruwa a layi tare da ƙaruwar matakin matsewa, yayin da kusurwar gogayya ta ciki na tokar kwari yana ƙaruwa sosai tare da ƙaruwar matakin matsewa; danshi na tokar kwari Kusa da mafi kyawun abun ciki na danshi ko kusa da matsewa 100%, ƙaramar raguwar haɗin kai da kusurwar gogayya ta ciki tare da ƙaruwar lokutan girgiza, kuma yana da sauƙi a isa ga yanayin kwanciyar hankali a farkon matakin girgiza. Chen Yunyong da Gao Liang sun kuma gudanar da gwaje-gwajen ƙirar cikin gida akan tarkacen tokar kwari masu ƙarfi. Bisa ga ka'idar kamanceceniya, mutanen biyu sun rage ainihin ma'aunin a rabo na 1:8 kuma sun yi amfani da geogrid mai kusurwa biyu a matsayin kayan ƙarfafawa, kuma sun gudanar da bincike na gwaji kan damuwa da matsin lamba na ma'aunin ƙarfafawa na tokar tashi. Sakamakon ya nuna cewa rashin daidaiton ma'aunin ma'aunin tokar tashi za a iya rage shi sosai ta hanyar ƙarfafa geogrid, kuma ana iya inganta ƙarfin ɗaukar nauyin ma'aunin sosai.

Tushen abun ciki: Fly Ash Industry Alliance