نتایج جستجو برای: silica fume lsf mixture

تعداد نتایج: 131523  

Journal: :American Journal of Applied Sciences 2017

Journal: :IOP Conference Series: Materials Science and Engineering 2020

Journal: :Nihon Hotetsu Shika Gakkai Zasshi 1968

Journal: :Indian Scientific Journal Of Research In Engineering And Management 2023

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...

Journal: :The Annals of occupational hygiene 1998
A E Johnson R C Brown

A number of commercially available air cleaners designed for use against solder fume have been examined. The fume capture efficiencies have been measured with a tracer gas comprising a neutrally buoyant mixture of sulphur hexafluoride and helium, and the filtration efficiencies have been measured using solder fume produced at a constant concentration, laboratory-generated monodisperse aerosols,...

Journal: :Cerâmica 2023

Adhesion and homogeneity of the coating-substrate were analyzed on basis establishment coating mineralogy. Substrate raw materials used kaolin clay a calcined alumina 4 µm; series higher density ceramic coatings deposited using aluminas 0.5 µm µm, silica fume, talc. The dip technique was applied to all substrates later sintered at 1300 ºC. Shrinkage mixtures substrate separately evaluated. X-ra...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

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...

2015
F.N. Okoye J. Durgaprasad N.B. Singh

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...

2004
Marie Oger Stéphane Ragot Roch Lefebvre

Source coding based on Gaussian Mixture Models (GMM) has been recently proposed for LPC quantization. We address in this paper the related problem of designing efficient codebooks for Gaussian vector sources. A new technique of ellipsoidal lattice vector quantization (VQ) is described, based on 1) scalar companding optimized for Gaussian random variables and 2) rectangular lattice codebooks wit...

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