Pumice is a volcanic aggregate that has been used to produce lightweight concrete for many years. In New Zealand there are large deposits of pumice in the central North Island. Self-consolidating concrete was introduced into Japan in the late 1980s due to a shortage of skilled workers. This paper reports the outcomes of a project to develop a lightweight self-consolidating concrete mix using two types of pumice densities. J-ring, L-box, V-funnel and slump flow tests have been utilised to evaluate the fresh properties of the mix, in addition to testing the strength and the length change.
Wilco Precast Ltd
66 Boundary Road
Papakura 2110, Auckland, New Zealand