EXPERIMENTAL AND NUMERICAL ANALYSIS OF DRYING SHRINKAGE ON CEMENT-BASED MATERIALS

Author(s): Marie Malbois, Adrien Socie, Aveline Darquennes, Caroline De Sa, Farid Benboudjema
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-170-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 342-351
Total Pages: 10
Language : English

Abstract: The drying of concrete induces surface microcracking due to hydric gradients, and internal
microcracking due to drying shrinkage incompatibilities between cement paste and
aggregates. The difficulty of separating each phenomena on concrete cracking makes it hard
to quantify aggregates effects with classical experiments. An ongoing parametrical
experimental study aims at quantifying the impact of drying and of inclusions by using
morphologically controlled materials. In these materials, the aggregates size and volume
fraction is controlled. The samples are then submitted to drying and their mechanical and
transport properties are regularly characterized. The first results indicate noticeable impacts of
both parameters. The study is to be enhanced of several results: different formulations and
tests to assess the evolution of mechanical and transport properties at several ages are
currently undertaken, and comparisons are made with results from numerical modelling.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00