3D Concrete Printing: The influence of printing process parameters on the mechanical properties, numerical modelling, and the exploration of sustainable printable solutions for humanitarian problems

Concrete is one of the most widely applied construction materials worldwide. Although traditional construction processes are optimized in terms of efficiency, costs and material use, the main disadvantages are still related to the use of formwork, labour and limited freedom of shapes in architectural design. The future of concrete structures...

Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixture

In 3D concrete printing (3DCP), it is necessary to meet contradicting rheological requirements: high fluidity during pumping and extrusion, and high stability and viscosity at rest to build the layered structure. In this paper, the impact of the hydroxypropyl methylcellulose (HPMC)-based viscosity-modifying admixture (VMA) on the 3D printability...

Effect of printing parameters on interlayer bond strength of 3D printed limestone-calcined clay-based cementitious materials: An experimental and numerical study

For a single batch material, time intervals and nozzle standoff distances between two subsequent layers are two critical printing parameters that influence the mechanical performance of the printed concrete. This paper presents an experimental and numerical study to investigate the impacts of these printing parameters on the interlayer bond...

The Bridge, (a) community building

The societal issue that this project tries to address is the increasing anonymity in residential urban neighborhoods. The increasing anonymity is caused by a decrease of social interaction between citizens that share the same living environment. The government used to subsidize community facilities like sports clubs and cultural institutions to...

Reuse of construction and demolition waste in the Netherlands for road constructions