COMPUTATIONAL APPROACH FOR ESTIMATING HYGRIC PROPERTIES OF HETEROGENEOUS MATERIALS IN LONG-TERM ASSESSMENT OF MOISTURE-INDUCED DAMAGE

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312385" target="_blank" >RIV/68407700:21110/17:00312385 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.14455/ISEC.res.2017.109" target="_blank" >http://dx.doi.org/10.14455/ISEC.res.2017.109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14455/ISEC.res.2017.109" target="_blank" >10.14455/ISEC.res.2017.109</a>

Result language

angličtina

Original language name

COMPUTATIONAL APPROACH FOR ESTIMATING HYGRIC PROPERTIES OF HETEROGENEOUS MATERIALS IN LONG-TERM ASSESSMENT OF MOISTURE-INDUCED DAMAGE

Original language description

Long-term assessment of degradation processes is a very useful tool for an analysis of building materials performance. Since computational techniques are mostly used for this purpose, hygric properties of involved materials are required as substantial input data. Unfortunately, some construction details or heterogeneous materials have to be solved by means of multi-dimensional modelling which is demanding on computing power and thus the calculations may take a lot of time. The presented paper aims at determination of effective hygric properties of heterogeneous materials which would allow one-dimensional transformation. The parameter identification process is carried out on the basis of results of multi-dimensional modeling, using genetic algorithms. The main objective is to find such effective global moisture transport and accumulation functions that provide in one-dimensional modeling as similar results to multi-dimensional modeling as possible. The obtained functions give a very good agreement; the investigated relative humidity profiles differ only by 1.48 percentage points in average. The correctness of obtained results is also verified using the Lichtenecker’s mixing rule as homogenization technique. The transformation of the original multi-dimensional problem into one-dimensional is found to substantially contribute to minimization of computational time, which is reduced from weeks to minutes.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Resilient Structures and Sustainable Constructions

ISBN

978-0-9960437-4-8

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

ISEC Press

Place of publication

Fargo

Event location

Valencia

Event date

Jul 24, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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