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Green concrete: optimization of high-strength concrete based on LCA Universiteit Gent
The construction industry is accountable for about 50 percent of the global resource consumption. Within this, traditional concrete is one of the products with a manufacturing process that has a relatively large impact on the environment. As a result of the rising awareness regarding sustainability, concrete suppliers, product manufacturers, and building contractors are concerned about which environmental impact their product has. Based on a ...
Vibrated concrete vs. self-compacting concrete: comparison of fracture mechanics properties Universiteit Gent
This study focuses on the fracture mechanics aspect of self-compacting concrete, compared to vibrated concrete. The most commonly used experiments to investigate the toughness and cracking behaviour of concrete are the three-point bending test (3PBT) on small, notched beams, and the wedge-splitting test (WST) on cubic samples with guiding groove and starter notch. From the resulting P-CMOD curves (applied load versus crack mouth opening ...
Application of microorganisms in concrete: a promising sustainable strategy to improve concrete durability Universiteit Gent
Aging of standard concretes and their effect on concrete cone failure Universiteit Gent
The safe design of infrastructure demands accurate long-term predictions of load carrying mechanisms associated with different physical mechanisms of all structural elements and materials that might lead to changes in structural response throughout time. In particular, those phenomena that lead to deterioration and/or failure have to be understood and captured by suitable prediction models. However, also the accurate prediction of time-variant ...
Influence of air entraining agents (AEAs) on deicing salt scaling resistance of high-volume fly ash concrete (HVFA concrete) Universiteit Gent
It is usually concluded from laboratory tests that deicing salt scaling resistance of High-Volume Fly Ash concrete (HVFA concrete) is less than satisfactory. This is mainly attributed to the partial adsorption of the applied air entraining agent (AEA) by the unburnt carbon present in the fly ash. As a consequence, the presence of an adequate air void system in HVFA concrete can not always be garantueed. This explains why the use of HVFA concrete ...
Feasibility of using recycled concrete aggregates to produce ultra high performance concrete: A preliminary study KU Leuven
This paper presents a preliminary feasibility study on the utilisation of a high quality recycled concrete aggregates (RCA) to manufacture ultra high performance concrete (UHPC), which represents a new type of cementitious material having superior workability, mechanical performance and durability properties in comparison to conventional concrete. The particle size of the RCA used in this paper ranges from 4 to 8 mm. A total of 4 mixtures are ...
Addressing the need for standardization of test methods for self-healing concrete: an inter-laboratory study on concrete with macrocapsules KU Leuven Universiteit Gent
Development and commercialization of self-healing concrete is hampered due to a lack of standardized test methods. Six inter-laboratory testing programs are being executed by the EU COST action SARCOS, each focusing on test methods for a specific self-healing technique. This paper reports on the comparison of tests for mortar and concrete specimens with polyurethane encapsulated in glass macrocapsules. First, the pre-cracking method was ...
Life cycle assessment of a column supported isostatic beam in high-volume fly ash concrete (HVFA concrete) Universiteit Gent
Nowadays, a lot of research is being conducted on high-volume fly ash (HVFA) concrete. However, a precise quantification of the environmental benefit is almost never provided. To do this correctly, we adopted a life cycle (LCA) approach. By considering a simple structure and an environment for the material, differences between traditional and HVFA concrete regarding durability and strength were taken into account. This paper presents the LCA ...