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Two different stochastic approaches modelling the decay process of masonry surfaces over time



Title: Two different stochastic approaches modelling the decay process of masonry surfaces over time
Author(s): E. Garavaglia, B. Lubelli, L. Binda
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 35
Issue: 248
Issue date: 2002-05-01
Publication year: 2002
Pages: 246 - 256
Total Pages: 11
Nb references: 17
Language: English


Abstract: Masonry structures subjected to aggressive environment may suffer degradation during their service life;the decay strongly depends on type of the component materials and the technique of construction.
This can lead th structure to high states of damage even if not failure.
The great randomness connected with the occurrence of critical attacks suggests approaching the deterioration process of masonry under a probabilistic point of view.
Following this way,the deterioration process L(t)of stone masonries has been carried out.
It has been approached as: 1)L(t)time dependent stochastic process of the random variable (r.
v.
) L.
2)L(t)time dependent stochastic process of the r.
v.
(tau).
The approaches 1)and 2)are able to model the reliability of masonry materials over time and predict,in probabilistic terms,the occurrence time of the expected damage.
The procedures have been applied to full-scale models built in Milan in 1990.
To measure the masonry decay in time a non-destructive technique has been adopted and the data collected hav been elaborated using th approaches 1)and 2).
The r sults obtained allow the good conv rgence of both the procedures as well as their diff rent possible applications.
On the base of these results a discussion on the possible use of these procedures in the maintenance strategies planning is introduced


Online publication: 2002-03-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13708


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