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Title: Detection of alkali-silica reaction swelling in concrete by staining

Abstract

A method using concentrated aqueous solutions of sodium cobalt nitrite and rhodamine B is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR). 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:
;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
645964
Patent Number(s):
5,739,035
Application Number:
PAN: 8-745,118
Assignee:
Univ. of California, Los Alamos, NM (United States) PTO; SCA: 360604; 420500; PA: EDB-98:101262; SN: 98001993301
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 14 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; CONCRETES; LIQUID PENETRANT INSPECTION; RHODAMINES; SODIUM COMPOUNDS; COBALT COMPOUNDS; NITRITES; GELS; DETECTION; SWELLING

Citation Formats

Guthrie, G.D. Jr., and Carey, J.W. Detection of alkali-silica reaction swelling in concrete by staining. United States: N. p., 1998. Web.
Guthrie, G.D. Jr., & Carey, J.W. Detection of alkali-silica reaction swelling in concrete by staining. United States.
Guthrie, G.D. Jr., and Carey, J.W. Tue . "Detection of alkali-silica reaction swelling in concrete by staining". United States.
@article{osti_645964,
title = {Detection of alkali-silica reaction swelling in concrete by staining},
author = {Guthrie, G.D. Jr. and Carey, J.W.},
abstractNote = {A method using concentrated aqueous solutions of sodium cobalt nitrite and rhodamine B is described which can be used to identify concrete that contains gels formed by the alkali-silica reaction (ASR). 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 = {1998},
month = {4}
}