Alkali-aggregate reaction is a reaction which occurs over time in
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Alkali Silica Reaction — (ASR) is a reaction between reactive silica (in the concrete aggregates) and an alkali (usually present in the cement), which results in the formation of a gel. This gel increases in volume with water and exerts expansive pressure on the concrete … Wikipedia
Construction aggregate — Limestone quarry … Wikipedia
Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… … Wikipedia
Magnesium hydroxide — IUPAC name Magnesium hydroxide … Wikipedia
Mactaquac Dam — The Mactaquac Dam is a hydroelectric dam built on the Saint John River in the Canadian province of New Brunswick and operated by NB Power corporation. Its power house has a capacity of 672 megawatts with its 6 turbines. The 6 turbines generate 20 … Wikipedia
NB Power — Énergie NB Power Type Government owned corporation Industry Electricity generation, transmission and distribution Founded Ap … Wikipedia
Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… … Wikipedia
Concrete degradation — may have various causes. Concrete can be damaged by fire, aggregate expansion, sea water effects, bacterial corrosion, calcium leaching, physical damage and chemical damage (from carbonation, chlorides, sulfates and distilled water). This process … Wikipedia
Protection of exposed concrete — is necessary to prolong its service life. A 120 year design life for concrete infrastructure has become increasingly common. Without early preventive maintenance this design life target may be optimistic. The design service life of reinforced… … Wikipedia
Metakaolin — is a dehydroxylated form of the clay mineral kaolinite. Rocks that are rich in kaolinite are known as china clay or kaolin, traditionally used in the manufacture of porcelain. The particle size of metakaolin is smaller than cement particles, but… … Wikipedia
