نتایج جستجو برای: silica fume lsf mixture

تعداد نتایج: 131523  

Journal: :International Journal of Concrete Structures and Materials 2010

Journal: :International Journal of Research in Engineering and Technology 2014

Journal: : 2022

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)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1392

abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

2014
Nidhi Murali Nivin Philip

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...

2009
S. P. Shah

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...

Journal: :E3S web of conferences 2021

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...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2020

Journal: :International Journal of Research in Engineering and Technology 2015

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