Hi, my name is Niels Haond and I am an exchange student at UiT in Narvik.
My country of origin is Belgium, where I studied for 5 years to get a degree of
industrial engineering in construction. Here in Narvik I had the opportunity to
complete my master's degree by writing my master's thesis in collaboration
with concrete specialists Boy-Arne Buyle and Iveta Novakova.
During the entire four-month period, I was able to carry out this work in the
concrete laboratory, where I was given my own desk to carry out my work
thoroughly. Apart from the good atmosphere and warm welcome, I received
an enormously interesting subject with which I could fill my time at the UiT.
My research focused on the sustainability aspect of concrete, namely its
recycling. The aim of my research was to make a detailed analysis of recycled
concrete aggregates produced by three different crushing technologies that
had not yet been extensively researched. The research on these recycled
concrete aggregates extracted from various locations was carried out by
determining the properties such as particle size distribution, shape, density,
water absorption, residual mortar content, etc. After obtaining these results,
correlations were made between these different characteristics, and some
conclusions were drawn .
My work has provided insight into which of the three crushers, namely the jaw
crusher, the impact crusher or the cone crusher, produces the most optimal
shape, produces the least amount of fines, removes the most mortar and
produces the highest yield in terms of the most preferred fractions.