H.M. Jonkers
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View article: Perspectives on the incorporation of self‐healing in the design practice of reinforced concrete structures
Perspectives on the incorporation of self‐healing in the design practice of reinforced concrete structures Open
Self‐healing concrete, with its ability to autonomously repair damages, holds promise in enhancing its structural durability and resilience. Research on self‐healing concrete in the past decade has advanced in understanding the mechanisms …
Downstream processing of End-of-Life concrete for the recovery of high-quality cementitious fractions Open
The clinker in cement largely determines the environmental footprint of concrete. Therefore, concrete recycling should focus on retrieving high-quality cementitious fractions to replace clinker. This requires a shift from current tradition…
Early-stage analysis of a novel insulation material based on MPCM-doped cementitious foam: Modelling of properties, identification of production process hotspots and exploration of performance trade-offs Open
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Microstructural characterization of crack-healing enabled by bacteria-embedded polylactic acid (PLA) capsules Open
The current study investigates short-term and long-term crack-healing behaviour of mortars embedded with bacteria-based poly-lactic acid (PLA) capsules under both ideal and realistic environmental conditions. Two sets of specimens were pre…
Structural performance of reinforced concrete beams with self-healing cover zone Open
In the current study, experiments were carried out to investigate the structural performance of reinforced concrete (RC) beams with a self-healing cover zone. The cover zone consists of a 1.5-cm-thick layer of bacteria-embedded strain hard…
P68 - Characterization of Electrical Properties of Direct Ink Written Silver Ink Open
ilver-ink traces on top of thermoplastic polyurethane substrates produced by Fused- Filament-Fabrication were characterized in terms of electrical - and piezo resistivity. Low resistivity in the order of 52.8 μΩ cm was achieved with piezor…
Pyrolysis of Reclaimed Asphalt Aggregates in Mortar Open
Asphalt pavement consists of aggregates resulting in a waste material at end of its life. The aggregates can be reused as basic material for asphalt or cementitious binding agents. In both scenarios, the recycled aggregates should provide …
Assessment of Functional Performance, Self-Healing Properties and Degradation Resistance of Poly-Lactic Acid and Polyhydroxyalkanoates Composites Open
In this study, the applicability of two bacteria-based healing agents (e.g., poly-lactic acid and polyhydroxyalkanoate) in blast furnace slag cement (BFSC) mortar has been assessed. An experimental campaign on the functional properties, se…
What Makes Cow-Dung Stabilised Earthen Block Water-Resistant Open
The water-resistance of cow-dung has made it a widely used stabiliser in traditional earthen structures in several Asian and African countries. Multiple studies have shown an improvement in water-resistance with the addition of cow-dung, b…
Biological Stabilisers in Earthen Construction: A Mechanistic Understanding of their Response to Water-Ingress Open
Earthen construction is re-gaining popularity as an ecological and economical alternative to contemporary building materials. While building with earth offers several benefits, its performance due to water ingress is a concern for its wide…
Gas chromatography to detect bacteria-based self-healing agents in concrete Open
In the concrete industry, legal disputes might occur when a built structure performs worse than it was supposed to during the design phase. When dealing with underperformance of self-healing concrete (e.g., no regain of water tightness aft…
Assessment of the self‐healing capacity of cementitious materials through active thin sections Open
Since self‐healing of cementitious materials can theoretically improve the service‐life of concrete structures, it has gathered significant attention from both researchers and industry during the last two decades. Many researchers have pro…
Design to market thinking: exploring the merits of strategic niche management in design thinking Open
Sustainability transitions require that sustainable innovations develop and scale-up. Two promising approaches contribute to this purpose. Design thinking (DT) focuses on the creative development of sustainable innovations to achieve desir…
Self-healing capacity of mortars with added-in bio-plastic bacteria-based agents: Characterization and quantification through micro-scale techniques Open
In this study, a novel non-toxic, biodegradable bacteria-based healing agent known as alkanoate derivatives (AKD) derived from wastewater was investigated for its self-healing efficiency of the mortar specimens in comparison to the already…
On the Applicability of a Precursor Derived from Organic Waste Streams for Bacteria-Based Self-Healing Concrete Open
Bacteria-based self-healing concrete has the ability to heal cracks due to the bacterial conversion of incorporated organic compounds into calcium carbonate. Precipitates seal the cracks, theoretically increasing the service life of constr…