Microsilica fume li cov khoom siv cement sib xyaw
May 24, 2024Tso lus
Some countries use microsilica fume as an admixture in the production of cement. Canada requires that in cement mixed with microsilica fume, the silicon content in the microsilica fume should be >85%, thaum qhov kub hnyiab yuav tsum yog<6%. In addition, Russia, the United States, Japan and other countries also use microsilica fume as a blending material for the production of special cement. Special cement mixed with microsilica fume can be made into dense concrete with a strength 2 to 3 times that of ordinary concrete. It has good wear resistance, corrosion resistance, impermeability, insulation, frost resistance and resistance to chloride ions. Blocking performance, etc.
BHZAD et al. tau kawm txog qhov cuam tshuam ntawm cov cement thiab microsilica fume precast panels ntawm kev ua haujlwm engineering ntawm peat block pem teb. Lawv siv cov txheej txheem finite los txheeb xyuas qhov kev ntxhov siab ntawm cov vaj huam sib luag precast thiab peat pem teb. Cov txiaj ntsig tau pom tias cov vaj huam sib luag precast tuaj yeem txhim kho lub zog ntawm cov av peat. thiab nqa peev xwm. Microsilica fume thiab polypropylene fiber ntau sib xyaw rau hauv cov cement. Cov txiaj ntsig tau pom tias kev sib xyaw ua ke tuaj yeem ua rau muaj zog, tawg tsis kam, compactness thiab durability ntawm cov cement, tab sis cov dej nqus thiab volumetric zoo ntawm cov cement yuav raug txo. OZCAN et al. kawm txog cov teebmeem ntawm bentonite, ya tshauv thiab microsilica fume cement slurry ntawm uniaxial compressive zog ntawm matrix ntawm 7, 14 thiab 28 hnub raws li. Txoj kev tshawb nrhiav pom tias microsilica fume yog qhov zoo tshaj plaws hauv kev txhim kho lub zog uniaxial compressive ntawm matrix. parameter ntsuas.
Lub zog ntawm cov cement nce ntxiv vim cov ntsiab lus ntawm microsilica fume ntxiv. Microsilica fume tuaj yeem txhim kho lub compactness thiab secant elastic modulus ntawm cov cement, thiab txhim kho corrosion kuj thiab creep zog ntawm cov cement. Txawm li cas los xij, qhov nqus dej ntawm cov cement Rate thiab volumetric zoo yuav raug txo. Yog li ntawd, thaum koom nrog microsilica fume rau hauv cov cement, kev saib xyuas yuav tsum tau them rau qhov txo qis ntawm cov dej nqus thiab ntim ntim.
