The alkali–silica reaction (ASR), also commonly known as concrete cancer, is a deleterious internal swelling reaction that occurs over time in concrete...

Alkali–aggregate reaction is a term mainly referring to a reaction which occurs over time in concrete between the highly alkaline cement paste and non-crystalline...

de-dolomitisation of the aggregates, due to absorption of water. The alkali–carbonate reaction is also catalyzed by the soluble NaOH produced by the reaction of Na 2CO...

Siliceous limestones can be very prone to the Alkali Silica Reaction (ASR) and their use as aggregate is often the cause of premature concrete degradation...

recycled aggregates. Aggregate (composite), Aggregate base Aggregate industry in the United States Alkali-aggregate reaction Alkali–silica reaction Concrete...

under oil to prevent reaction with air, and are found naturally only in salts and never as the free elements. Caesium, the fifth alkali metal, is the most...

reinforcements. Alkali–silica reaction (ASR), also known as alkali-aggregate reaction (AAR), when reactive amorphous silica aggregates exposed to alkaline...

Mg(OH)2 + Na2CO3 This reaction, one of the two main alkali–aggregate reaction (AAR) is also known as alkali–carbonate reaction. Portlandite – calcium...

dissolution of the aggregate aluminosilicates. Alkali–aggregate reaction – Expansive chemical reaction damaging concrete (AAR) Alkali–silica reaction – Chemical...

category. Aerated autoclaved concrete Alkali-aggregate reaction Alkali-carbonate reaction Alkali-silica reaction Calcium silicate hydrate (C-S-H) Calthemite...

acids "At any rate", see List of SMS abbreviations Alkali–aggregate reaction, a chemical reaction leading to expansion in concrete Ahr, a river in Germany...

locally quarried greywacke was used as the aggregate and is responsible for an alkali-aggregate reaction expansion. The dam is being monitored and extra...

have resulted in toxic environmental conditions. Alkali–silica reaction (ASR) Alkali–aggregate reaction Cement Cenosphere – a CCP, often recycled Coal waste...

of C-S-H phases: Alkali–silica reaction – Chemical reaction damaging concrete Alkali–aggregate reaction – Expansive chemical reaction damaging concrete...

useful in the detection of the type of cation in a salt. To do this, an alkali first reacts with the unknown salt to produce a precipitate that is the...

to aggregate particle size. A quite similar reaction (alkali-silicate reaction) can occur when clay minerals are present in some impure aggregates, and...

generator and structural problems within the dam were due to Alkali–aggregate reaction. The power station's concrete was cracking and deteriorating while...

hydroxide, is the alkali–silica reaction, a slow degradation process causing the swelling and the cracking of concrete containing aggregates rich in reactive...

chloride and alkali silica reaction due to pore refinement. Also, they are generally cost effective in comparison to other aggregates, good for semi...

he diversified his research focus into the study of pavements, alkali-aggregate reaction in concrete, solid waste disposal, pressures in silos and underground...

of dam from thermal expansion. The cracking was exacerbated by alkali-aggregate reaction, which causes the concrete volume to increase and develop additional...

plant has been a concern for some time due to a phenomenon called alkali-aggregate reaction, causing the dam to expand and crack. The problem has been known...

alkali silicates were made by Basil Valentine in 1520, and by Agricola in 1550. Around 1640, Jan Baptist van Helmont reported the formation of alkali...

composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools...

waste products as aggregate than Portland cement as it is less alkaline. This reduces the incidence of alkali-aggregate reactions which cause damage...

be used as a solvent in the reaction. Thus, an alcoholic solution of the alkali alkoxide is used. Another similar reaction occurs when an alcohol is reacted...

due to concrete swelling. Alkali Aggregate Reaction, or AAR, is a chemical reaction in concrete created where the aggregate has a high silicon dioxide...

cracking. The conditions required for alkali silica reaction are threefold: (1) aggregate containing an alkali-reactive constituent (amorphous silica), (2) sufficient...

"Introducing a Hydrogen-Bond Donor into a Weakly Nucleophilic Brønsted Base: Alkali Metal Hexamethyldisilazides (MHMDS, M = Li, Na, K, Rb and Cs) with Ammonia"...

through the reaction of aluminosilicate materials with an alkaline or acidic solution. Many geopolymers may also be classified as alkali-activated cements...