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Title: Automated Detection of Alkali-silica Reaction in Concrete using Linear Array Ultrasound Data

Abstract

Alkali-silica reaction (ASR) is a chemical reaction in either concrete or mortar between hydroxyl ions of the alkalis (sodium and potassium) from hydraulic cement (or other sources), and certain siliceous minerals present in some aggregates. The reaction product, an alkali-silica gel, is hygroscopic having a tendency to absorb water and swell, which under certain circumstances, leads to abnormal expansion and cracking of the concrete. This phenomenon affects the durability and performance of concrete structures severely since it can cause significant loss of mechanical properties. Developing reliable methods and tools that can evaluate the degree of the ASR damage in existing structures, so that informed decisions can be made toward mitigating ASR progression and damage, is important to the long term operation of nuclear power plants especially if licenses are extended beyond 60 years. This paper examines an automated method of determining the extent of ASR damage in fabricated concrete specimens.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1356937
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, Portland, OR, USA, 20170813, 20170817
Country of Publication:
United States
Language:
English

Citation Formats

Santos-Villalobos, Hector J, Clayton, Dwight A, Ezell, N Dianne Bull, Clayton, Joseph A, and Baba, Justin S. Automated Detection of Alkali-silica Reaction in Concrete using Linear Array Ultrasound Data. United States: N. p., 2017. Web.
Santos-Villalobos, Hector J, Clayton, Dwight A, Ezell, N Dianne Bull, Clayton, Joseph A, & Baba, Justin S. Automated Detection of Alkali-silica Reaction in Concrete using Linear Array Ultrasound Data. United States.
Santos-Villalobos, Hector J, Clayton, Dwight A, Ezell, N Dianne Bull, Clayton, Joseph A, and Baba, Justin S. Sun . "Automated Detection of Alkali-silica Reaction in Concrete using Linear Array Ultrasound Data". United States. doi:.
@article{osti_1356937,
title = {Automated Detection of Alkali-silica Reaction in Concrete using Linear Array Ultrasound Data},
author = {Santos-Villalobos, Hector J and Clayton, Dwight A and Ezell, N Dianne Bull and Clayton, Joseph A and Baba, Justin S},
abstractNote = {Alkali-silica reaction (ASR) is a chemical reaction in either concrete or mortar between hydroxyl ions of the alkalis (sodium and potassium) from hydraulic cement (or other sources), and certain siliceous minerals present in some aggregates. The reaction product, an alkali-silica gel, is hygroscopic having a tendency to absorb water and swell, which under certain circumstances, leads to abnormal expansion and cracking of the concrete. This phenomenon affects the durability and performance of concrete structures severely since it can cause significant loss of mechanical properties. Developing reliable methods and tools that can evaluate the degree of the ASR damage in existing structures, so that informed decisions can be made toward mitigating ASR progression and damage, is important to the long term operation of nuclear power plants especially if licenses are extended beyond 60 years. This paper examines an automated method of determining the extent of ASR damage in fabricated concrete specimens.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2017},
month = {Sun Jan 01 00:00:00 EST 2017}
}

Conference:
Other availability
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