Tasirin Tashin Kura, MgO Mai Faɗaɗawa da kuma Rage Rage Ragewa akan Juriyar Tsagewar Fuska ta Siminti

Juriyar Tsagaita Faifan siminti yana da matuƙar muhimmanci ga rayuwar madatsar ruwa ta dutse (CFRD) da ke fuskantar siminti. Tasirin tokar kwari,Agent mai faɗaɗa MgO, da kuma admixture mai rage raguwar raguwa (SRA) akan halayen injiniya, raguwar bushewa da juriyar tsagewa na simintin fuska an yi nazari kuma an kwatanta su da simintin da aka yi amfani da shi. Sakamakon ya nuna cewa ƙara tokar tashi 20% (ta hanyar nauyin ɗaurewa) yana ƙara ƙarfin siminti a ƙarshen zamani. Sabanin haka, ƙara wakili mai faɗaɗa 6%MgO ko 1%SRA yana rage ƙarfin matsi, yana raba ƙarfin tsagewa da juriya na ƙarshe zuwa wasu matakai a shekaru daban-daban. Haɗa tokar tashi 20%, wakili mai faɗaɗa 6%MgO, da 1%SRA na iya rage raguwar bushewa a shekaru daban-daban da kuma inganta juriyar tsagewa na farko na siminti, yayin da haɗa wakili mai faɗaɗa 6%MgO ya fi dacewa don hana ci gaban raguwa da inganta juriyar tsagewa na siminti fiye da ƙara tokar tashi 20% ko 1%SRA.

Madatsar ruwan siminti (CFRD) madatsar ruwan siminti ce mai cike da duwatsu tare da wurin zubar da duwatsu a matsayin babban ƙarfi, sannan kuma fuskar siminti a sama a matsayin babban jikin da ke hana zubewa. Saboda halayensa na aminci mai kyau, ƙarfin daidaitawa, ɗan gajeren lokacin gini da ƙarancin farashi, madatsar ruwan siminti ta zama ɗaya daga cikin nau'ikan madatsun ruwa da aka fi amfani da su a cikin ƙirar madatsun ruwa. Fale-falen siminti sune sirara kuma masu kama da tsiri waɗanda ke iya fashewa saboda canjin yanayin zafi, nakasa girma da kuma daidaita tushen madatsun ruwa. Ga jikin madatsun ruwa, idan akwai tsagewa a fuskar siminti, zai lalata mutunci da dorewar tsarin jikin madatsun ruwa, kuma gibin da fashewar farantin fuska ke haifarwa na iya ba da damar ruwan waje ya shiga cikin simintin, wanda ke haifar da zubewar jikin madatsun kai tsaye. Saboda haka, inganta juriyar tsagewar fale-falen siminti muhimmin batu ne da ya shafi aikin madatsun ruwa masu cike da duwatsu masu cike da siminti lafiya. Aikin injiniya da bincike na yanzu sun nuna cewa manyan matakan fasaha don inganta juriyar fasa simintin fuska sun haɗa da sarrafa ingancin kayan albarkatun siminti, inganta rabon cakuda siminti, ƙara tokar tashi da ƙara adadin zare masu dacewa. Babban abubuwan da ke cikin na'urar rage raguwar siminti wani nau'in polyalcohol ko polyether organic mahadi ne na halitta da abubuwan da suka samo asali. Bincike ya nuna cewa ƙara wakili mai rage raguwa na iya rage matsin lamba a saman ruwan ramin siminti, ta haka rage matsin lamba na raguwa da ake samu lokacin da ramukan capillary suka rasa ruwa, da kuma inganta juriyar tsagewa na siminti zuwa wani mataki. Ƙara wakili mai faɗaɗa MgO yayin shirye-shiryen siminti hanya ce ta gama gari don sarrafa tsagewa. Tunda wakilin faɗaɗa MgO zai samar da wani faɗaɗa girma yayin saita siminti da taurarewa, zai iya rama raguwar siminti, gami da raguwar zafin jiki, raguwar bushewa da raguwar kai, ta haka rage faruwar fasa siminti. A halin yanzu, an yi amfani da wakilin faɗaɗa MgO cikin nasara a kan simintin da ke cikin tashar wutar lantarki ta ruwa kuma an sami kyakkyawan tasirin hana fashewa. Duk da haka, akwai ƙananan bincike kan tasirin na'urar rage raguwar raguwa da kuma maganin faɗaɗa MgO akan juriyar tsagewar simintin fuska.