Hanyar Magance Ingantacciyar Simintin Zuba Jari

Abstract: Ƙofa ɗaya, simintin gyare-gyare na saman allura, yin amfani da maimaita amfani da kayan gyare-gyare na matsakaici, ta amfani da dewaxing na biyu, don tabbatar da cewa an cire duk kakin zuma a cikin harsashi, don hana samar da iskar gas mai kutse a cikin simintin.

Mahimman kalmomi: Matsakaicin kayan ƙira, lalata na biyu, ramukan iska

An raba porosity na simintin simintin gyare-gyare zuwa nau'in porosity, daɗaɗɗen porosity da porosity na kutsawa. Hazo porosity yana samuwa ta hanyar nadawa karfen ruwa daga cikin iskar; da hannu a cikin porosity ne simintin gyare-gyare da kuma zub da tsarin a cikin yanayi kafin zuba sana'a, zuba ba santsi na karfe kwarara iya zama kogon gas da hannu a samuwar porosity; invasive porosity ne kwarara allura, simintin gyaran kafa saboda ruwa karfe thermal sakamako na ruwa evaporation, kwayoyin halitta (mould abu) konewa samar da babban adadin iskar gas, lokacin da iskar gas matsa lamba ne mafi girma daga ruwa karfe matsa lamba, da gas zai mamaye da ruwa karfe da samuwar porosity. Lokacin da matsin iskar gas ya fi ƙarfin ƙarfe na ruwa, gas ɗin zai mamaye ƙarfen ruwa da samuwar porosity. A cikin wannan takarda, simintin gyare-gyare na narke saboda matsakaicin matsakaicin ƙira na kayan da ya rage kuma yana haifar da abubuwan da ke haifar da rashin ƙarfi da matakan kariya don tantancewa.

I. Dalilai da bincike na porosity

1. Abubuwan da ke haifar da porosity

Wasu daga cikin simintin gyaran gyare-gyaren mu ta amfani da kofa ɗaya, tsarin simintin gyare-gyare na sama, sau da yawa suna bayyana a cikin tsarin simintin gyare-gyare na lahani na porosity (duba Hoto 1), matsalar ta faru, da farko mun yi la'akari da narkakken karfe da iskar gas ba shi da kyau don samar da porosity, da kuma ɗaukar matakan da suka biyo baya: tabbatar da cewa kayan dawowa yana da tsabta, babu mai, babu tsatsa; ② don inganta yawan zafin jiki da kuma lokacin ƙonawa don tabbatar da cewa harsashi gas permeability; ③ don rage saurin zubewa da kyau za a jefar da harsashi karkatar da ruwa don tabbatar da cewa iskar gas a cikin karfe don yin iyo: ④ rage lokacin narkewar zafin jiki mai zafi kuma cikakke deoxidise karfe don guje wa iskar oxygen da kyau rage abun ciki na gas a cikin karfe. Bayan gwajin simintin gyare-gyaren porosity har yanzu yana wanzu, babu wani ci gaba a fili, kuma a ƙarshe a cikin gasasshen harsashi don gano matsalar, lalata harsashin gasasshen ya gano cewa akwai ƙura mai yawa a cikin harsashi (duba hoto 2).

2. Dalilin bincike

Manufar babban simintin gyare-gyaren shine ya fi dacewa don tabbatar da cewa ƙarfin cikawar simintin, rage matsalar raguwar simintin gyare-gyare, biye da harsashi a cikin matsakaicin zafin jiki mold kayan ba zai sami saura sabon abu ba, ko da akwai ɗan gaban gasa ba zai bayyana ba kamar yadda aka nuna a cikin Hoto 2 babban yanki na carbon launin toka, simintin ta amfani da kofa ɗaya, babban simintin simintin gyare-gyare ta amfani da babban simintin simintin. Wax saura ne m tare da tsawo na ciki bakin harsashi a cikin wani karamin adadin mold abu ba za a iya cire kamar yadda aka nuna a cikin Figure 3 (sakamakon da yawan kungiyoyin ba m), da harsashi bayan gasa da harsashi a cikin bayyanar carbon ash (hydrogen mahadi), a lokacin da high-zazzabi karfe zuba a cikin harsashi da carbon ash lamba a cikin babban adadin samuwar gases.