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

This 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...

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Autores principales: Giaccio, Graciela Marta, Torrijos, María Celeste, Milanesi, Carlos Alberto, Zerbino, Raúl Luis
Formato: Articulo
Lenguaje:Español
Publicado: 2019
Materias:
Ingeniería
Alkali–aggregate reaction
concrete
degradation
fibre reinforcement
mechanical properties
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80821
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80821
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ingeniería
Alkali–aggregate reaction
concrete
degradation
fibre reinforcement
mechanical properties
spellingShingle Ingeniería
Alkali–aggregate reaction
concrete
degradation
fibre reinforcement
mechanical properties
Giaccio, Graciela Marta
Torrijos, María Celeste
Milanesi, Carlos Alberto
Zerbino, Raúl Luis
Alkali–silica reaction in plain and fibre concretes in field conditions
topic_facet Ingeniería
Alkali–aggregate reaction
concrete
degradation
fibre reinforcement
mechanical properties
description This 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.
format Articulo
Articulo
author Giaccio, Graciela Marta
Torrijos, María Celeste
Milanesi, Carlos Alberto
Zerbino, Raúl Luis
author_facet Giaccio, Graciela Marta
Torrijos, María Celeste
Milanesi, Carlos Alberto
Zerbino, Raúl Luis
author_sort Giaccio, Graciela Marta
title Alkali–silica reaction in plain and fibre concretes in field conditions
title_short Alkali–silica reaction in plain and fibre concretes in field conditions
title_full Alkali–silica reaction in plain and fibre concretes in field conditions
title_fullStr Alkali–silica reaction in plain and fibre concretes in field conditions
title_full_unstemmed Alkali–silica reaction in plain and fibre concretes in field conditions
title_sort alkali–silica reaction in plain and fibre concretes in field conditions
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/80821
work_keys_str_mv AT giacciogracielamarta alkalisilicareactioninplainandfibreconcretesinfieldconditions
AT torrijosmariaceleste alkalisilicareactioninplainandfibreconcretesinfieldconditions
AT milanesicarlosalberto alkalisilicareactioninplainandfibreconcretesinfieldconditions
AT zerbinoraulluis alkalisilicareactioninplainandfibreconcretesinfieldconditions
bdutipo_str Repositorios
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