Publications associées à Coulis (maçonnerie)

Shear behavior of single- and triple-thickness masonry panels strengthened by bed-joint structural repointing

Bed-joint structural repointing is a widely used strengthening technique in historic masonry constructions, particularly in applications where the material appearance needs to be preserved. Despite its wide use, limited research is available on the effecti ...

ELSEVIER SCI LTD2021

Multi-scale modelling of concrete structures affected by alkali-silica reaction: Coupling the mesoscopic damage evolution and the macroscopic concrete deterioration

Jean-François Molinari, Emil Gallyamov, Mauro Corrado, Roozbeh Rezakhani, Aurelia Isabel Cuba Ramos

A finite-element approach based on the first-order FE2 homogenisation technique is formulated to analyse the alkali-silica reaction-induced damage in concrete structures, by linking the concrete degradation at the macro-scale to the reaction extent at the ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Characterization of interfacial transition zone in concrete prepared with carbonated modeled recycled concrete aggregates

Karen Scrivener

Treatment by accelerated carbonation has been widely studied to enhance the quality of recycled concrete aggregates (RCA) and hence the performance of new concrete produced with the RCA. This is often ascribed to the densification of RCA. This study invest ...

Pergamon-Elsevier Science Ltd2020

Hydration reactions and stages of clinker composed mainly of stoichiometric ye'elimite

Karen Scrivener, Emmanuelle Boehm Courjault, Mohsen Ben Haha, Frank Bullerjahn

Ye'climitc (Ca4Al6O12SO4 or C(4)A(3)(S) over bar) is the main hydraulic mineral present in calcium sulfoaluminate cement (CSA). The hydration of ye'elimite is responsible for the early age cement properties. We identify 5 stages in the hydration of neat st ...

Pergamon-Elsevier Science Ltd2019

Simplified micro-modelling of shear-compression stone masonry walls and their interaction with plaster

Katrin Beyer, Bastian Valentin Wilding, Michele Godio, Dionysia Michalogianni

The performance of shear-compression stone masonry walls with regard to their interaction with plaster is investigated by means of numerical simulations. A 3D finite element model based on the simplified micro-modelling technique is developed for the mason ...

2018

Evaluation of grout materials for CFRP ground anchors with strap ends

Thomas Keller, Anastasios Vassilopoulos, Haifeng Fan

An evaluation of cement- and resin-based grout materials for applications in carbon fiber-reinforced polymer (CFRP) ground anchor heads composed of high-strength grout and a CFRP strap was conducted. Uniaxial compression experiments were performed on cylin ...

Elsevier2017

Structural performance of permanent post-tensioned CFRP ground anchors with strap ends

Haifeng Fan

Permanent post-tensioned ground anchors are widely used for the stabilization of different structures in civil engineering. Carbon fiber-reinforced polymer (CFRP) tendons have been proposed to replace steel tendons in ground anchors to solve the durability ...

EPFL2017

Recycling of hydrated cement pastes by synthesis of alpha'(H)-C2S

Franco Alberto Zunino Sommariva, Ricardo Javier Serpell Carriquiry

Hardened cement paste in concrete wastes can be a valuable precursor material for the production of recycled cements. In the reported study, X-ray diffraction data of cementitious materials obtained by thermal processing of hardened pastes were quantitativ ...

Pergamon-Elsevier Science Ltd2017

Hydration of multi-component cements containing cement clinker, slag, calcareous fly ash and limestone

Pawel Tadeusz Durdzinski

Calcareous fly ashes are high-potential reactive supplementary cementitious materials, which present an interesting alternative to slowly reacting siliceous fly ashes and to slags, which availability is more and more limited. Themain factor against an accu ...

EPFL2016

Cyclic test data of six unreinforced masonry walls with different boundary conditions

Katrin Beyer, Sarah Petry

Previous test data on unreinforced masonry walls focused on the global response of the wall. A new data set (Petry and Beyer 2014a; D01:10.5281/zenodo.8443) on six wall tests, which is publicly available, allows for linking global to local deformations of ...

2015

Force-displacement response of unreinforced masonry walls for seismic design

Sarah Petry

In regions with low to moderate seismicity, unreinforced masonry (URM) is commonly used for the construction of low to mid-rise buildings. When these structures are subjected to seismic loading, the stiff URM walls attract considerable part of the lateral ...

EPFL2015

Experimental investigation and modelling of the structural behaviour of confined grouted interfaces for a new steel–concrete connection

Jean-Paul Lebet, Dimitrios Papastergiou

Confined interfaces between cement grout and other materials such as embossed steel or rough concrete are formed in an innovative new steel-concrete connection for composite bridges. This article presents the experimental study of such interfaces and inves ...

Elsevier2014

EPB tunneling challenges in bouldery ground: a new experience on the Tabriz metro line 1, Iran

Jian Zhao

Underground construction of the Tabriz metro line 1 involved boring twin tunnels with two earth pressure balance machines in alluvial deposits. Although this type of machine is recommended for excavation in fine soils, its performance was evaluated in this ...

Springer Verlag2014

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the meso-structure and inﬂuence of the loading rate

Jean-François Molinari, Leonardo Snozzi, Fabrice Gatuingt

At the mesoscopic scale, concrete can be considered as a mix of coarse aggregates with a mortar paste matrix. In this paper, we investigate numerically the influence of aggregates arrangements and loading rate on the tensile response of concrete. Each coar ...

Wiley-Blackwell2013

Densification of C-S-H Measured by H-1 NMR Relaxometry

Karen Scrivener, Arnaud Charles Albert Muller

The nanoscale morphology of, and pore water interactions in, calcium silicate hydrate (C-S-H), the active component of cement, remain uncertain. H-1 nuclear magnetic resonance (NMR) can fully characterize the nanoporosity of C-S-H in as-prepared material w ...

Amer Chemical Soc2013