Analysis and design of FRP externally-reinforced concrete beams against debonding-type failures

Title: Analysis and design of FRP externally-reinforced concrete beams against debonding-type failures
Author(s): M. Maalej, W. H. Goh, P. Paramasivam
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 34
Issue: 241
Issue date: 2001-08-01
Publication year: 2001
Pages: 418 - 425
Total Pages: 8
Nb references: 20
Language: English

Abstract: This study presents a numerical simulation of the performance of an NMR spectrometer in which the influence of equipment with both low and high spatial resolutions is investigated.
The results indicate that a low resolution NMR with a wide sensitivity curve may be unable to provide an accurate estimation of the moisture profile along the whole length of a test sample where the moisture gradient changes abruptly.
It cannot provide accurate moisture information over a distance measured from each end of the test sample equivalent to the effective width of the sensitivity curve.
However,a low-resolution spectrometer does not show any significant errors when calculating liquid diffusion coefficients, although the range of moisture contents over which they can be measured is limited.
This study suggests that to avoid errors and practical difficulties,NMR spectrometers for moisture measurement should be selected carefully by matching the effective width of the sensitivity curve to the moisture properties of the material to be measured.

Online publication: 2001-06-17
Classification: Technical Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13626