News bulletin-42:
News bulletin-42: 23 Oct 2018

Perth-based concrete-maker Eden Innovations has had to answer queries from the ASX three times this month as the company’s shares continue to surge. The company also has a couple of jobs open: a concrete technician and an engineering technician.

AECOM, whose Queensland office is an Institute Member, has signed a contract with the Victorian Government as design partner for the Melbourne Metro Tunnel Project. The company is part of the Rail Infrastructure Alliance that also includes CPB Contractors and John Holland.

Researchers at Purdue University, Illinois, have 3D-printed cement paste that gets tougher under pressure like the shells of arthropods such as lobsters and beetles. The technique could eventually contribute to more resilient structures during natural disasters, the team says.

Contract employment in the engineering sector appears to be on the rise, according to two recruitment firms. Around a quarter of all engineering hires done under contract and half of all managers expect to grow their employee numbers on this basis.

Micron-sized calcium silicate spheres could help create stronger, more environmentally-friendly concrete, according to researchers at Rice University in Texas. The team formed the spheres in a solution around nanoscale seeds of a common detergent-like surfactant, with the spheres able to be prompted to self-assemble into strong solids.

The first world-wide, large-scale casting using recycled tyre polymer fibres has taken place at Sheffield University’s Civil Engineering Department to research the recycling of tyre steel and polymer fibres for use in the concrete construction industry. Special machines have been developed to ensure they are dispersed uniformly in concrete, which is now being tested for strength, durability and fire resistance.

Image: Packed, micron-scale calcium silicate spheres are a promising material that could lead to stronger and more environmentally-friendly concrete, according to researchers at Rice University. Source: RU Multiscale Materials Laboratory.