by U.S. Army Engineer Waterways Experiment Station, Available from National Technical Information Service in Vicksburg, Miss, [Springfield, Va .
Written in English
|Statement||by Alan D. Buck, J.P. Burkes ; prepared for Office, Chief of Engineers, U.S. Army, under civil works investigation work units 31294, 31295, 31345.|
|Series||Miscellaneous paper -- SL-81-13., Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) -- SL-81-13.|
|Contributions||Burkes, J. P., United States. Army. Corps of Engineers., Structures Laboratory (U.S.).|
|The Physical Object|
|Pagination||5,  p. :|
Silica fume or microsilica is very fine non-crystalline silica produced in electric arc furnaces as a by-product of the production of elemental silicon or alloys containing silicon. Characterization and Reactivity of Silica Fume, in Proceedings of the 3rd International T. Parhizkar, Influence of Silica Fume on Alkali-Silica Reaction. The influence of silica fume (SF) addition on properties of geopolymer materials produced from alkaline activation of alumino-silicates metakaolin and waste concrete produced from demolition works has been studied through the measurement of compressive strength, Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy (SEM) by: Silica fume C caused significant expansion with both non-reactive and reactive aggregates under ASTM C conditions. This behavior is so dramatically different from that of silica fumes A, B, and D, it suggests that the alkali silica reactivity of silica fume may have to Cited by: About Silica Fume; Introduction; Characterization of Silica Fume; Physico-chemical characterization; Composition; Properties of Silica Fume related to its applications; Health, Safety, Environment; Key facts & .
Silica fume is a micro silica by-product derives from the production of silicon and ferrosilicon alloys through the reduction of high pure quartz with coal in electric furnace .This technique. A Review for Characterization of Silica Fume and Its Effects on Concrete shrinkage, perm eability, chem ical attack resistance, alkali-silica reactivity Silica fume is. Silica fume concrete is composed of cement, silica fume, fine aggregate, coarse aggregate, and water. Fresh and hardened properties of silica fume concrete is superior to conventional concrete. For instance, it has higher compressive and flexural strength. The durability of this type of concrete is superior to conventional : Madeh Izat Hamakareem. This study investigates the improved reactivity of a geopolymer based on a combination of fly ash and blast furnace slag (BFS) by the addition of silica fume. The geopolymer was synthesized by activating a mixture of fly ash, BFS, and three different types of silica fume with alkali activator. X-ray diffraction (XRD) and inductively coupled plasma-optical emission spectroscopy (ICP-OES) were Cited by:
Silica fume, also known as microsilica, (CAS number , EINECS number ) is an amorphous (non-crystalline) polymorph of silicon dioxide, is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of nm. Alkali-silica reactivity in five dams in southwestern United States / (Denver, Colo.: Concrete and Structural Branch, Division of Research and Laboratory Services, Engineering and Research Center, U.S. Dept. of the Interior, Bureau of Reclamation Springfield, Va.: Available from National Technical Information Service, ), by D. Stark and. Mineralogical characterization of the raw materials was done using X-ray diffraction analysis as represented in Fig.(2), where coarse aggregate included waste concrete has a major content of quartz and little calcite content. Kaolin on the other hand is composed mainly of kaolinite and quartz, while silica fume is completely amorphous Size: 1MB. Title: Influence of Silica Fume Replacement of Cement on Physical Properties and Resistance to Sulfate Attack, Freezing and Thawing, and Alkali-Silica Reactivity Author(s): R. D. Hooton Publication: Materials Journal Volume: 90 Issue: 2 Appears on pages(s): Keywords: alkali-aggregate reactions; durability; freeze-thaw durability; permeability; silica fume; sulfate attack; .