Thermo-hydro-mechanical properties of repair mortars designed for the restoration of historical buildings in the Loire valley-France

Author(s): Marwen Bouasker, Omar Abdulkareem, Amor Ben Fraj, Muzahim Al-Mukhtar, Kévin Beck
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference
Materials, Systems and Structures in Civil Engineering 2016 segment on
Historical Masonry
Editor(s): Inge Rörig-Dalgaard and Ioannis Ioannou
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 112-121
Total Pages: 10
Language : English

Abstract: Repair mortars used for restoration need to be highly compatible with historical materials in
terms of physical, chemical and mechanical properties in order to preserve existing materials
and to prevent early deterioration. In order to obtain the same physical, chemical and
mechanical properties as Tuffeau stone (the historical stone from the Loire Valley Region of
France), two mortars based on Tuffeau powder (waste from cutting operations) and on lime
and fine silica sand were made (named F1 and F2 respectively). A third commercial mortar
(V) was used as a reference material. The thermo-hydro-mechanical properties of these three
mortars were studied and compared to that of Tuffeau stone. The results show that the
porosity, the water absorption behavior and the thermal conductivity of the mortar (F2) were
similar to those obtained with Tuffeau stone. The compressive strength, the tensile strength
and the shearing strength of the two mortars were significantly lower than those obtained with
Tuffeau stone, generally not exceeding 25%, showing that the mortar (F2) is softer than the
original stone.
Recommendations are offered for using the Formula (F2) as a more compatible mortar that
can be used in the restoration of monuments built of Tuffeau stone.

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