Modeling of expansion behavior due to alkali-silica reaction under complicated stress
نویسندگان
چکیده
منابع مشابه
Modeling Time-Dependent Behavior of Concrete Affected by Alkali Silica Reaction in Variable Environmental Conditions
Alkali Silica Reaction (ASR) is known to be a serious problem for concrete worldwide, especially in high humidity and high temperature regions. ASR is a slow process that develops over years to decades and it is influenced by changes in environmental and loading conditions of the structure. The problem becomes even more complicated if one recognizes that other phenomena like creep and shrinkage...
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The microstructural development of mortar bars with silica glass aggregate undergoing alkali-silica reaction (ASR) under the conditions of American Society for Testing and Materials (ASTM) Standard Test C1260 was analyzed using scanning electron microscopy and qualitative X-ray microanalysis. Cracking in the aggregate, the hydrated paste, and the paste-aggregate interface was important in the d...
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The alkali-silica reaction (ASR) is an expansive chemical reaction that occurs between certain reactive aggregates and the alkaline pore solution surrounding them. In the presence of water, the volume of ASR products greatly exceeds that of the reactants, resulting in the generation of internal pressures that can cause substantial damage to civil engineering structures. This thesis aims to deve...
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A comparative study of amorphous and crystalline forms of commercial aluminum hydroxides as inhibitors of alkalisilica reactions in Portland cement mortars has been performed. It was found that at dosages of 1% to 3%, amorphous aluminum hydroxide can efficiently inhibit alkali-silica expansion of Portland cement compositions. High inhibiting activity of amorphous Al(OH)3 additives may be explai...
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Alkali silica reaction (ASR) occurs due to chemical reaction between hydroxyl ions in the pore water within the concrete matrix and certain forms of silica. This reaction could lead to strength loss, cracking, volume expansion and potentially failure of the structure. This manuscript reports findings of an experimental investigation of the inter-particle bonding between the reactive aggregates ...
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ژورنال
عنوان ژورنال: Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))
سال: 2013
ISSN: 2185-4661
DOI: 10.2208/jscejam.69.i_279