Publicaties
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Influence of strain rate on tensile behavior of cementitious composites: increasing speed in a static test Vrije Universiteit Brussel
The present paper investigates the tensile stress-strain behaviour of a cementitious composite at different strain rates ranging from 10-4 s-1 up to 0.05 s-1. The cementitious composite exists of an inorganic phosphate cement (IPC) matrix reinforced with 20 vol% of different unidirectional fibre types. The results indicate that the use of statically determined material data for dynamic or impact loading on structural components can not be ...
Applicability of composite Charpy impact method for strain hardening textile reinforced cementitious composites Vrije Universiteit Brussel
Since most test methods, used for strain hardening cementitious composites, are adopted from polymer composites test standards, this paper investigates the applicability of a standard impact test (ISO 179-1:2000), which is used in the polymer composites world, on a specific textile reinforced cementitious composite using an inorganic phosphate cement (IPC) as a matrix material. The aim is to provide a test method to investigate the local impact ...
An application oriented state-of-art and research-need perspective on self-healing fibre-reinforced cementitious composites Universiteit Gent
The design of building structures and infrastructures is mainly based on four concepts: safety, serviceability, durability and sustainability. The latter is becoming increasingly relevant in the field of civil engineering. Reinforced concrete structures are subjected to conditions that produce cracks which, if not repaired, can lead to a rapid deterioration and would result in increasing maintenance costs to guarantee the anticipated level of ...
Understanding the carbonation of concrete with supplementary cementitious materials : a critical review by RILEM TC 281-CCC Universiteit Gent KU Leuven
Blended cements, where Portland cement clinker is partially replaced by supplementary cementitious materials (SCMs), provide the most feasible route for reducing carbon dioxide emissions associated with concrete production. However, lowering the clinker content can lead to an increasing risk of neutralisation of the concrete pore solution and potential reinforcement corrosion due to carbonation. carbonation of concrete with SCMs differs from ...
Effect of matrix modification on the durability of cementitious composites reinforced with aligned Ensete fibre Vrije Universiteit Brussel
Researchers are looking for new eco-friendly products to preserve non-renewable and non-biodegradable resources. Fibres obtained from natural sources offer indisputable advantages over synthetic reinforcement materials,
including low density, low cost, abundance, comparable strength, non-toxicity and minimum environmental impact. However, when using natural fibres in a pure Portland cement matrix, the mechanical strength is significantly ...
including low density, low cost, abundance, comparable strength, non-toxicity and minimum environmental impact. However, when using natural fibres in a pure Portland cement matrix, the mechanical strength is significantly ...
The synergy of ultrasonic experiments, numerical analyses of wave propagation and scattering theories in cementitious materials Vrije Universiteit Brussel
The final properties of cementitious materials (strength and durability) strongly depend on the mix proportions and the
fresh state of the latter. It is therefore imperative to investigate the early stages, assess the quality of the mixes as well as
monitor their time evolution. In this direction, ultrasonic measurements, since many decades, have been proposed as the
most efficient tool for quality control and condition ...
fresh state of the latter. It is therefore imperative to investigate the early stages, assess the quality of the mixes as well as
monitor their time evolution. In this direction, ultrasonic measurements, since many decades, have been proposed as the
most efficient tool for quality control and condition ...
Monitoring the hydration of cementitious material by acoustic emission Vrije Universiteit Brussel
Studying the mechanisms affecting the very early age hydration as well as the microstructure of cementitious materials is essential to improve concrete performance. Consequently, it is ncccssary to monitor and understand the early age hydration process. In this work, continuous acoustic emission (AE), ultrasonic pulse velocity (UPV), and capillary pressure monitoring has been applied on consolidated and non-consolidated cement paste to study ...
Dynamic loading performance of fibre engineered cementitious materials with self-healing capacity (SH-FECM) Universiteit Gent
Structural performance under dynamic actions, apart from geometric characteristics, supports loading conditions, design methods, etc., is mainly related to the intrinsic material properties of the structural elements. Earthquake events, as typical examples of accidental dynamic loading, involve strong stress waves, induced in the structure in very short time intervals. Increased loading rates, difficult to withstand, are generated. Therefore, ...
Finite element modelling of the material behaviour of glass fibre textile reinforced cementitious composite Vrije Universiteit Brussel
The application of glass fibre textile reinforced cementitious composites (GTRC) in doubly-curved shells has numerous advantages over other widely-used materials for free form shapes. In this paper, the suitability of different material models - available in the finite element programs Ansys and Abaqus - for the modelling of glass textile reinforced cementitious composites is evaluated. The use of the concrete smeared crack model in Abaqus for ...