| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Lura, Pietro
Swiss Federal Laboratories for Materials Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (43/43 displayed)
- 2024Mesostructural evolution of fine-aggregate bitumen emulsion–cement composites by X-ray tomographycitations
- 2023A neutron radiography study on the drying of cement mortars: effect of mixture composition and crack lengthcitations
- 2022Experimental assessment and modelling of effective tensile elastic modulus in high performance concrete at early agecitations
- 2021Alkali-silica reaction – a multidisciplinary approachcitations
- 2020Visco-elastic behavior of blended cement pastes at early agescitations
- 2020Microstructure development and autogenous shrinkage of mortars with C-S-H seeding and internal curingcitations
- 2020A laboratory investigation of cutting damage to the steel-concrete interfacecitations
- 2020Chemical prestressing of high-performance concrete reinforced with CFRP tendonscitations
- 2019Intrinsic viscoelasticity of C-S-H assessed from basic creep of cement pastescitations
- 2019Study of physical properties and microstructure of aerogel-cement mortars for improving the fire safety of high-performance concrete linings in tunnelscitations
- 2019On the mechanism of plastic shrinkage cracking in fresh cementitious materialscitations
- 2018A novel method to predict internal relative humidity in cementitious materials by 1 H NMRcitations
- 2018A poromechanics model for plastic shrinkage of fresh cementitious materialscitations
- 2018Susceptibility of Portland cement and blended cement concretes to plastic shrinkage crackingcitations
- 2017Elastic and visco-elastic behavior of cementitious materials at early agescitations
- 2017Evaluation of the ultimate drying shrinkage of cement-based mortars with poroelastic modelscitations
- 2017Corrugated tube protocol for autogenous shrinkage measurements: review and statistical assessmentcitations
- 2016The bleeding test: a simple method for obtaining the permeability and bulk modulus of fresh concretecitations
- 2016Influence of cement on rheology and stability of rosin emulsified anionic bitumen emulsioncitations
- 2016Overview on cold cement bitumen emulsion asphaltcitations
- 2016Using neutron radiography to assess water absorption in air entrained mortarcitations
- 2014Internal curing with lightweight aggregate produced from biomass-derived wastecitations
- 2014Reduction of fire spalling in high-performance concrete by means of superabsorbent polymers and polypropylene fibers small scale fire tests of carbon fiber reinforced plastic-prestressed self-compacting concretecitations
- 2014Effect of self-desiccation and internal curing with superabsorbent polymers on the thermal expansion coefficient of HPC
- 2014Pore structure of mortars with cellulose ether additions – Mercury intrusion porosimetry studycitations
- 2013Controlling the coefficient of thermal expansion of cementitious materials - a new application for superabsorbent polymerscitations
- 2013An investigation on the use of zeolite aggregates for internal curing of concretecitations
- 2013Prediction of self-desiccation in low water-to-cement ratio pastes based on pore structure evolutioncitations
- 2013Influence of cement content and environmental humidity on asphalt emulsion and cement composites performancecitations
- 2012Influence of different conditioning regimes on the oxygen diffusion and oxygen permeability of concrete
- 2012Modeling of water migration during internal curing with superabsorbent polymerscitations
- 2012Ethyl silicate for surface treatment of concrete – part II: characteristics and performancecitations
- 2012Hardening process of binder paste and microstructure developmentcitations
- 2012A numerical and experimental study of aggregate-induced shrinkage cracking in cementitious compositescitations
- 2011Modeling of internal curing in maturing mortarcitations
- 2009A critical examination of statistical nanoindentation on model materials and hardened cement pastes based on virtual experimentscitations
- 2007Standard Test Method for Autogenous Strain of Cement Paste and Mortar
- 2007Influence of Shrinkage-Reducing Admixtures on the Development of Plastic Shrinkage Cracks
- 2006Measurement of volume change in cementitious materials at early ages - Review of testing protocols and interpretation of results
- 2006Modelling of water permeability in cementitious materialscitations
- 2005Micro-crack detection in high-performance cementitious materials
- 2005Internal water curing with Liapor aggregates
- 2003Autogenous shrinkage in high-performance cement paste: An evaluation of basic mechanisms
Places of action
| Organizations | Location | People |
|---|
article
A laboratory investigation of cutting damage to the steel-concrete interface
Abstract
he microstructure of the steel-concrete interface (SCI) in reinforced concrete is closely related to corrosion of reinforcing steel bars. Accordingly, characterization of the SCI is receiving increasing research attention. For microscopical observations of the SCI, a cutting process is needed to create a flat cross-section. Cutting carries the risk of damaging the SCI because of the considerable difference of hardness between concrete and steel. However, studies on characterizing the microstructure of the SCI rarely consider the damage induced by the potentially inappropriate cutting process. This study investigated the damage created by three cutting methods, namely, mechanical sawing, laser cutting, and combined laser-water cutting by the Laser MicroJet technology (LMJ). The SCI of the cut sections was imaged by scanning electron microscopy equipped with a backscattered electron detector. Additionally, the specimens were non-invasively studied by X-ray microtomography before and after cutting, to compare the impact of various cutting techniques on inducing damage to the SCI beneath the cutting surface. The results showed that if a bleed water zone (BWZ) is present, the cutting technique and protocol can significantly influence the morphology of this zone and adjacent regions. This study recommends an optimized mechanical sawing protocol with low feed speed as this led to considerably less SCI damage than laser and LMJ cutting. Moreover, it was found that adjusting the cutting direction can further significantly reduce the damage created during cutting. The least damage was found when the saw blade cut through the steel before cutting the BWZ. The main problem with laser cutting was heat generated even for a relatively low laser power; therefore, a heat-affected zone was created which significantly altered the microstructural features of the SCI not only on the cutting surface but also a certain depth below the surface. In LMJ cutting, this thermal effect was significantly reduced, however, the high-pressure water eroded the porous SCI and caused cracks. These effects can penetrate along the BWZ into the interior material. To complete this study, two applications demonstrate that the optimized mechanical sawing protocol is applicable to concrete specimens with rebars of actual size and corroded rebars.