Detection Of Concrete Deterioration By Staining
Abstract
A method using concentrated aqueous solutions of sodium cobaltinitrite and a rhodamine dye is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR), and to identify degraded concrete which results in a porous or semi-permeable paste due to carbonation or leaching. These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na--K--Ca--Si gels are identified by yellow staining, and alkali-poor, Ca--Si gels are identified by pink staining.
- Inventors:
-
- (Santa Fe, NM)
- Santa Fe, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 879514
- Patent Number(s):
- 5955372
- Application Number:
- 09/060513
- Assignee:
- The Regents of the University of California (Los Alamos, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Guthrie, Jr., George D., and Carey, J William. Detection Of Concrete Deterioration By Staining. United States: N. p., 1999.
Web.
Guthrie, Jr., George D., & Carey, J William. Detection Of Concrete Deterioration By Staining. United States.
Guthrie, Jr., George D., and Carey, J William. Tue .
"Detection Of Concrete Deterioration By Staining". United States. https://www.osti.gov/servlets/purl/879514.
@article{osti_879514,
title = {Detection Of Concrete Deterioration By Staining},
author = {Guthrie, Jr., George D. and Carey, J William},
abstractNote = {A method using concentrated aqueous solutions of sodium cobaltinitrite and a rhodamine dye is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR), and to identify degraded concrete which results in a porous or semi-permeable paste due to carbonation or leaching. These solutions present little health or environmental risk, are readily applied, and rapidly discriminate between two chemically distinct gels; K-rich, Na--K--Ca--Si gels are identified by yellow staining, and alkali-poor, Ca--Si gels are identified by pink staining.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}
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Works referenced in this record:
Insitu identification of ASR products in concrete
journal, May 1988
- Natesaiyer, K.; Hover, K. C.
- Cement and Concrete Research, Vol. 18, Issue 3
A staining technique for the identification of sulphates in aggregates and concretes
journal, September 1975
- Poole, A. B.; Thomas, A.
- Mineralogical Magazine, Vol. 40, Issue 311
Further study of an in-situ identification method for alkali-silica reaction products in concrete
journal, September 1989
- Natesaiyer, Kumar C.; Hover, Kenneth C.
- Cement and Concrete Research, Vol. 19, Issue 5