نتایج جستجو برای: silica fume
تعداد نتایج: 38428 فیلتر نتایج به سال:
Conventional glass fiber-reinforced concrete (GFRC) has wide applications in high-rise buildings, bridges, and renovation works. In this study, ultra-high-strength fiber reinforced (UHS-GFRC) mixtures were developed to minimize the size of structural members. The percentage was varied as 0%, 0.03%, 0.06%, 0.09%, 0.12%. investigation, ten beams cast tested, with two span-to-effective-depth (a/d)...
This paper investigates the potential benefits of Ternary blended High-performance concrete containing Silica fume (SF) and Alccofine (AL) as partial cement replacements. The experimental program contains a total 14 mixes with water to binder ratio 0.4 varying percentages (0-20%) both binary ternary blended. Fresh hardened properties were evaluated based on slump, compressive strength, flexural...
Various papers based on high performance concrete (HPC) and their behaviour were studied. HPC’s containing different mineral as well as chemical admixtures exhibits different properties in fresh as well as hardened states. Several factors determine these properties like: type of mineral as well as chemical admixture, type of aggregates, water-cement ratio, curing method etc. Each paper takes in...
This research investigates changes in the nanostructure and the nanoscale local mechanical properties of cement paste with microand nano-modifiers. Silica fume and multiwall carbon nanotubes (MWCNTs) were used as microand nano-modifiers. An effective method of dispersing CNTs in cement matrix was developed. A detailed study on the effects of CNTs concentration and aspect ratio on the fracture p...
To study the effect of fly ash, mineral powder, and silica fume on working performance mechanical properties C70 high-performance concrete by adding same amount granulated blast furnace slag as a composite admixture to replace cement. Influencing law, at time, optimal dosage ratio various admixtures is determined through orthogonal experiment. The results show that: when 6% fume, it can improve...
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