نتایج جستجو برای: silica fume
تعداد نتایج: 38428 فیلتر نتایج به سال:
The misuse of waste material has developed into another draw because the significance consciousness and unpleasant feelings. A by-product refinement silicon ferrosilicon is silica fume (SF). design production reinforced concrete seen remarkable success with fume. One most crucial elements commercial viability modern work been short-term usage Silica Rage (SR), as well manufacturing SF-regulated...
There are many demands of concrete in construction leading to the use industrial waste as mineral additive or supplementary filler improve performance and lower production cost. Silica fume is a distinct waste. The making silica made by case basis based on specific needs especially for prescribed High Performance Concretes. In this study, low/medium grade general investigated [1]. It an attempt...
Geopolymer concrete mixes were cast using fly ash, kaolin, sodium hydroxide, potassium hydroxide, sodium silicate and aggregates. Portland cement concrete (M30) was used as a reference sample. The effect of silica fume, temperature (40 °C, 60 °C, 80 °C, 100 °C and 120 °C), sodium and potassium hydroxides and different superplasticizers on the compressive strength are reported [1]. Maximum stren...
It is well known that the characteristics of concrete components greatly affect the durability of high strength/high performance (HS/HP) concrete against frost action. Undoubtedly, precise recognition of this relationship leads 
to appropriate selection of the type and proportions of concrete components in any particular project. In the current study, the aim is to investigate the possibilit...
It is well known that the characteristics of concrete components greatly affect the durability of high strength/high performance (HS/HP) concrete against frost action. Undoubtedly, precise recognition of this relationship leads to appropriate selection of the type and proportions of concrete components in any particular project. In the current study, the aim is to investigate the possibility ...
A self-compacting concrete (SCC) is the one that can be placed in the form and can go through obstructions by its own weight and without the need of vibration. Since its first development in Japan in 1988, SCC has gained wider acceptance in Japan, Europe and USA due to its inherent distinct advantages. Although there are visible signs of its gradual acceptance in the North Africa through its li...
Self-Compacting Concrete Originally developed in Japan, SCC technology was made possible by the much earlier development of Superplasticisers for concrete. To compare the performance of SCC with Fly Ash 20%, Silica Fume 10%, Rice Husk Ash (5%, 10%, and 15%) as a partial replacement of cement, due to the high increase in construction which has brought a heavy demand for ingredients of concrete s...
Calcium carbide residue (CCR) is a waste by-product from acetylene gas production. The main component of CCR is Ca(OH)₂, which can react with siliceous materials through pozzolanic reactions, resulting in a product similar to those obtained from the cement hydration process. Thus, it is possible to use CCR as a substitute for Portland cement in concrete. In this research, we synthesized CCR and...
Abstract The effects of fly ash, Air Cooled Blast Furnace Slag (ACBFS), and silica fume on cement compressive strength are examined. concrete is studied by the addition air-cooled blast furnace slag fume. effect ACBFS, was investigated. content reduced 25%, 22.50%, 20%, 17.50%, respectively; ash used to replace 40%, 60% coarse aggregate; partially replaced 2.5%, 5%, 7.50% content. Contrarily, l...
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