Is alkali–carbonate reaction just a variant of alkali–silica reaction ACR=ASR?

Observations on dedolomitization of carbonate concrete aggregates, implications for ACR and expansion

“…In spite of the fact that ACR appears to be rare, it has been observed and reported by many researchers [2][3][4][5]. ACR is usually divided into two types of reaction: (1) the reaction of carbonate minerals (dolomite) in an alkaline environment, developing dedolomitization, and (2) the reaction of silica associated minerals in carbonate rocks, i.e.…”

Rietveld Quantitative Phase Analysis of OPC Clinkers, Cements and Hydration Products

“…Some aggregates, mainly silica but also carbonate, may provoke the expansion with failure of OPC concretes. RQPA has been employed to study the aggregates with the final aim to understand these reactions (Grattan-Bellew et al 2010). Furthermore, this technique has also been employed, plus other characterization tools, to study the alkali-aggregate reaction in OPC and waterglass-alkaliactivated slag mortars (Puertas et al 2009).…”

Assessment Gravel Aggregate Reactivity With Alkalis In Relation To Methods Of Test

“…The reactive forms of silica include opal, acidic volcanic glass, tridymite, cristobalite, chalcedony, and cryptocristalline quartz and moganite as common chalcedony constituents [3,4]. In addition to the alkali-silica reaction, the alkali-dolomite reaction is recognized and currently regarded as a variant of the ASR by some researchers [5,6,7]. Alkalis enter the concrete with the cement, in which they occur as soluble sulphates of sodium and potassium.…”