干旱区生态环境知识资源中心(Arid): Monitoring, Modeling, and Diagnosis of Alkali-Silica Reaction in Small Concrete Samples

Arid

DOI	10.2172/1245691
报告编号	INL/EXT--15-36683
来源ID	OSTI_ID: 1245691
	Monitoring, Modeling, and Diagnosis of Alkali-Silica Reaction in Small Concrete Samples
	Agarwal, Vivek [Idaho National Lab. (INL), Idaho Falls, ID (United States)]; Cai, Guowei [Idaho National Lab. (INL), Idaho Falls, ID (United States)]; Gribok, Andrei V. [Idaho National Lab. (INL), Idaho Falls, ID (United States)]; Mahadevan, Sankaran [Idaho National Lab. (INL), Idaho Falls, ID (United States)]
英文摘要	Assessment and management of aging concrete structures in nuclear power plants require a more systematic approach than simple reliance on existing code margins of safety. Structural health monitoring of concrete structures aims to understand the current health condition of a structure based on heterogeneous measurements to produce high-confidence actionable information regarding structural integrity that supports operational and maintenance decisions. This report describes alkali-silica reaction (ASR) degradation mechanisms and factors influencing the ASR. A fully coupled thermo-hydro-mechanical-chemical model developed by Saouma and Perotti by taking into consideration the effects of stress on the reaction kinetics and anisotropic volumetric expansion is presented in this report. This model is implemented in the GRIZZLY code based on the Multiphysics Object Oriented Simulation Environment. The implemented model in the GRIZZLY code is randomly used to initiate ASR in a 2D and 3D lattice to study the percolation aspects of concrete. The percolation aspects help determine the transport properties of the material and therefore the durability and service life of concrete. This report summarizes the effort to develop small-size concrete samples with embedded glass to mimic ASR. The concrete samples were treated in water and sodium hydroxide solution at elevated temperature to study how ingress of sodium ions and hydroxide ions at elevated temperature impacts concrete samples embedded with glass. Thermal camera was used to monitor the changes in the concrete sample and results are summarized.
出版年	2015
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	36 MATERIALS SCIENCE ; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS ; CONCRETES ; SODIUM HYDROXIDES ; SODIUM IONS ; SILICA ; NUCLEAR POWER PLANTS ; SOLUTIONS ; COMPUTERIZED SIMULATION ; CHEMICAL REACTION KINETICS ; GLASS ; HARDNESS ; WATER ; ANISOTROPY ; EXPANSION ; DECOMPOSITION ; RANDOMNESS ; STRESSES ; TEMPERATURE RANGE 0273-0400 K ; TIME DEPENDENCE Alkali Silica Reaction ; Concrete Sample with Embedded Glass ; Concrete Structural Health Monitoring ; MOOSE Modeling ; Percolation Theory
URL	http://www.osti.gov/scitech/servlets/purl/1245691
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/271201
推荐引用方式 GB/T 7714	Agarwal, Vivek [Idaho National Lab. ,Cai, Guowei [Idaho National Lab. ,Gribok, Andrei V. [Idaho National Lab. ,et al. Monitoring, Modeling, and Diagnosis of Alkali-Silica Reaction in Small Concrete Samples,2015.