skip to content

Concrete Infrastructure Research Group (CIRG)




Interface properties of multi-mix elements

Multi-mix elements result in varying interface zones within the element where concretes with different fresh state and hardening properties meet. At these zones, intermixing or reduced bond strength can occur if the concrete mixtures are not compatible and/or the casting processes are not chosen carefully.

The aim of our research group is to identify properties and casting processes that promote interlayer bond strength and control any intermixing.    Acceptable thresholds to maintain the mechanical and durability properties of multi-mix elements are being evaluated. 



Brault A, Lees JM. (2020) Wet casting of multiple mix horizontally layered concrete elements. Construction and Building Materials, 247, 118514.

Torelli G, Giménez Fernández M, Lees JM. (2020) Functionally graded concrete: Design objectives, production techniques and analysis methods for layered and continuously graded elements. Construction and Building Materials, 242, 118040.

Torelli G, Lees JM. (2019) Fresh state stability of vertical layers of concrete. Cement and Concrete Research, 120, 227-243.