Alkali-silica reaction products: Comparison between samples from concrete structures and laboratory test specimens

Alkali–silica reactions (ASR): Literature review on parameters influencing laboratory performance testing

“…Regarding properties of ASR gel, it was found that products obtained in laboratory tests are similar to those identified in field concretes (amorphous and crystalline) ( [195], [196], [197]). If so, this fact is important as it means that temperature is probably not as important to the morphology of the alkalisilica gel as it is for the reactivity, rate and amount of gel produced [197].…”

Alkali–silica reaction: Kinetics of chemistry of pore solution and calcium hydroxide content in cementitious system

“…Several researchers [22,23,25] reported on the essential role of calcium (Ca) in forming stable (non-dissolvable) variety of ASR gel by suggesting that in the absence of calcium, the silica minerals just dissolved and remained in the solution. Generally, the content of Ca in ASR gel increases with age [27] and the ASR gels found in paste have higher content of Ca than those found within reactive aggregate particles [13,15,[28][29][30].…”

Interfacial Transition Zone in Mature Fiber-Reinforced Concretes

“…In UHPC, this durability concern is considered negligible [5]. Some studies [7] have highlighted the importance of these boundaries by detecting Alkali-Silica gels filling not only microcracks and pore voids, but also the cement paste/aggregate boundary. This is a concern regarding the long-term properties of the material.…”