You need JavaScript to view this

Moisture profile measurements of concrete samples in vertical flow by gamma ray attenuation method. Medidas do perfil de umidade de amostras de concreto em infiltracao vertical, atraves da atenuacao de raios gama

Journal Article:

Abstract

This work deals with the study of the water diffusion in concrete by the gamma ray attenuation method. The moisture profiles, [theta] (z,t), of the vertical water flow were determined in concrete samples of different trace and porosity. The data were taken with a vertical and horizontal measurement table, a [sup 60] Co gamma ray source, a NaI (T) scintillation detector and the standard gamma ray spectrometry electronic. The [theta] (z,t) data analysis is presented using a phenomenological model of the moisture profile temporal evolution in heterogeneous materials. Two other models, Cell and Sandwich, were also applied to determine the attenuation coefficient of a non-homogeneous media from the attenuation coefficients of the components, taking into account particles-size effects. (author).
Authors:
Appoloni, C R; Nardocci, A C; Obuti, M M [1] 
  1. Universidade Estadual de Londrina, PR (Brazil). Dept. de Fisica
Publication Date:
Apr 01, 1988
Product Type:
Journal Article
Reference Number:
AIX-25-028763; EDB-94-056093
Resource Relation:
Journal Name: Ciencia e Cultura (Sao Paulo); (Brazil); Journal Volume: 40:4
Subject:
42 ENGINEERING; WATER INFLUX; CONCRETES; GAMMA RADIOGRAPHY; RADIATION ATTENUATION TESTING; COBALT 60; DIFFUSION; EXPERIMENTAL DATA; FUNCTIONS; GAMMA RADIATION; GAMMA SPECTROSCOPY; HUMIDITY; NAI DETECTORS; PARTICLE SIZE; POROSITY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BUILDING MATERIALS; COBALT ISOTOPES; DATA; ELECTROMAGNETIC RADIATION; INDUSTRIAL RADIOGRAPHY; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATERIALS; MATERIALS TESTING; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; NONDESTRUCTIVE TESTING; NUCLEI; NUMERICAL DATA; ODD-ODD NUCLEI; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SCINTILLATION COUNTERS; SIZE; SOLID SCINTILLATION DETECTORS; SPECTROSCOPY; TESTING; YEARS LIVING RADIOISOT; 420500* - Engineering- Materials Testing
OSTI ID:
5341074
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Journal ID: ISSN 0009-6725; CODEN: CCUPAD
Submitting Site:
INIS
Size:
Pages: 387-391
Announcement Date:

Journal Article:

Citation Formats

Appoloni, C R, Nardocci, A C, and Obuti, M M. Moisture profile measurements of concrete samples in vertical flow by gamma ray attenuation method. Medidas do perfil de umidade de amostras de concreto em infiltracao vertical, atraves da atenuacao de raios gama. Brazil: N. p., 1988. Web.
Appoloni, C R, Nardocci, A C, & Obuti, M M. Moisture profile measurements of concrete samples in vertical flow by gamma ray attenuation method. Medidas do perfil de umidade de amostras de concreto em infiltracao vertical, atraves da atenuacao de raios gama. Brazil.
Appoloni, C R, Nardocci, A C, and Obuti, M M. 1988. "Moisture profile measurements of concrete samples in vertical flow by gamma ray attenuation method. Medidas do perfil de umidade de amostras de concreto em infiltracao vertical, atraves da atenuacao de raios gama." Brazil.
@misc{etde_5341074,
title = {Moisture profile measurements of concrete samples in vertical flow by gamma ray attenuation method. Medidas do perfil de umidade de amostras de concreto em infiltracao vertical, atraves da atenuacao de raios gama}
author = {Appoloni, C R, Nardocci, A C, and Obuti, M M}
abstractNote = {This work deals with the study of the water diffusion in concrete by the gamma ray attenuation method. The moisture profiles, [theta] (z,t), of the vertical water flow were determined in concrete samples of different trace and porosity. The data were taken with a vertical and horizontal measurement table, a [sup 60] Co gamma ray source, a NaI (T) scintillation detector and the standard gamma ray spectrometry electronic. The [theta] (z,t) data analysis is presented using a phenomenological model of the moisture profile temporal evolution in heterogeneous materials. Two other models, Cell and Sandwich, were also applied to determine the attenuation coefficient of a non-homogeneous media from the attenuation coefficients of the components, taking into account particles-size effects. (author).}
journal = {Ciencia e Cultura (Sao Paulo); (Brazil)}
volume = {40:4}
journal type = {AC}
place = {Brazil}
year = {1988}
month = {Apr}
}