A5073540497- Concrete and Cement Materials Research
- Innovative concrete reinforcement materials
- Concrete Properties and Behavior
- Structural Behavior of Reinforced Concrete
- Innovations in Concrete and Construction Materials
- Concrete Corrosion and Durability
- Structural Engineering and Vibration Analysis
- Structural Load-Bearing Analysis
- Railway Engineering and Dynamics
- Geophysical Methods and Applications
- Fire effects on concrete materials
- Ultrasonics and Acoustic Wave Propagation
- Recycled Aggregate Concrete Performance
- Structural Engineering and Materials Analysis
- Magnesium Oxide Properties and Applications
- BIM and Construction Integration
- Building materials and conservation
- Smart Materials for Construction
- Recycling and utilization of industrial and municipal waste in materials production
- Advanced ceramic materials synthesis
- Rock Mechanics and Modeling
- Non-Destructive Testing Techniques
- Microbial Applications in Construction Materials
- Structural Health Monitoring Techniques
- Materials Engineering and Processing
Université Libre de Bruxelles
2016-2025
This note deals with the use of embedded piezoelectric transducers to monitor ultrasonic P-wave velocity evolution during setting and hardening phases concrete subsequent casting time. The main advantage technique is possibility overcoming limitations traditional methods which prevent application specific mechanical boundary conditions measurement. are based on 'smart aggregates' concept previously developed at University Houston, Texas. Two in a prismatic mold recorded for first 24 h after...
This study aims to compare the developments of mechanical properties and autogenous shrinkage related alkali-activated materials-based concrete (AC) ordinary Portland cement-based (OC) against curing age degree reaction. Temperature Stress Testing Machines are utilized monitor evolution internal tensile stress cracking occurrence in restrained concrete. It is found that AC shows lower strength-to-compressive strength ratios than OC. The both OC can be modelled by a power law higher...
Abstract The design of concrete structures is based on calculation rules, which often do not take into account the very early age behaviour material. However, during this period, structural subjected to strains due hydration process cement. If these are restrained by itself or surrounding boundaries, stresses start build up that can lead formation cracks. Among parameters involved in stress up, stiffness evolution major importance. This paper reports use eight different techniques aimed at...
This study investigates the influence of curing temperature (explored at 10 °C, 20 and 30 °C) on volume changes alkali-activated slag (AAS) pastes with aim expanding existing knowledge materials (AAMs). The focus was autogenous thermal strains, internal relative humidity (IRH), heat flow cumulative heat, setting times, workability. results indicate that increasing to °C reduces shrinkage, likely due in elastic modulus viscoelastic properties, while promoting swelling, especially for higher...
ABSTRACT The aim of this study is the determination time-zero, a reference time from which autogenous deformation expressed, and effect choice on evolution autogeneous concretes with different slag proportions (0 71%). time-zero based setting measured by means several experimental methods (mechanical, electrical ultrasonic). Autogenous also new shrinkage testing set-up developed at Université Libre de Bruxelles. Following results it appears that equal to final most adequate for classic...
This study investigates the development of elastic and creep properties sodium hydroxide-activated blast furnace slag mortar, utilizing three different molarities activator solution two solution-to-binder ratio a reference OPC-based mixture, since earliest age. The experimental phase involves series hourly-repeated 5-min long tests on aging material. approach enables continuous monitoring, facilitating characterization early-age stiffness properties. Linear regression is employed to...
The study of alkali-activated slag (AAS) is motivated by the need for more sustainable alternatives to Portland cement (PC) within construction industry. Specifically, AAS offers good mechanical and chemical properties. However, influence activator on its pore structure hydraulic conductivity remains unclear. Both are key parameters in understanding drying process could potentially explain high shrinkage observed so far. present aims investigate size distribution six distinct AAS/sodium...
This paper aims at identifying the effect of substitution natural coarse gravel and sand by recycled on early age development volume change mechanical properties since setting. For this purpose, a new experimental testing protocol for characterization cementitious materials is used. approach based repeated application thermal variation loading using newly developed device. The high porosity absorption aggregate induce strong reduction autogenous deformations, modulus elasticity strength...