Alkali–silica reaction in plain and fibre concretes in field conditions

dc.creatorGiaccio, Graciela Marta
dc.creatorTorrijos, María Celeste
dc.creatorMilanesi, Carlos Alberto
dc.creatorZerbino, Raúl Luis
dc.date2019
dc.date2019-09-10T12:23:36Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/80821
dc.descriptionThis paper presents an experimental study on the effects of alkali–silica reaction (ASR) in concrete blocks placed outdoors, exposed to weather conditions. To promote different reaction kinetics and damage levels, the size of the reactive aggregates, the alkali content and incorporation of different fibre types (steel, polymer) were the variables considered. Expansions, crack patterns and air permeability were monitored for more than 3 years. In addition, standard expansion, compression and flexion tests were performed. The volume of concrete involved in ASR enhances the development of expansions and cracking; in the blocks different expansions were measured in vertical or horizontal directions and important cracks were observed. While the prisms expansions were attenuated after the first 12 months, in the blocks the damage by ASR continues growing for more than 3 years. Although the incorporation of macrofibers does not inhibit the development of ASR, it led to benefits such as reduction in cracking and deformations.
dc.descriptionLaboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica (LEMIT)
dc.formatapplication/pdf
dc.languagees
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectIngeniería
dc.subjectAlkali–aggregate reaction
dc.subjectconcrete
dc.subjectdegradation
dc.subjectfibre reinforcement
dc.subjectmechanical properties
dc.titleAlkali–silica reaction in plain and fibre concretes in field conditions
dc.typeArticulo
dc.typeArticulo


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