Development of an auxetic embedded concrete block for resilient masonry

Project Description:

Concrete block masonry walls play a significant role in building construction due to compressive strength, fire resistance as well as their cost-effective nature. However, low tensile strength and strain capacities, poor resistance to cracking, fracture against impact loads, blast and seismic pressures are considered as major limitations of the masonry structures made of concrete blocks. These drawbacks make masonry structures vulnerable to failure and can cause severe structural damages and life losses. The concrete blocks can be made more resilient to disasters.

To accomplish this task, sustainable and high-energy absorbing auxetic materials can be employed to make composite concrete blocks. Auxetic materials which possess a negative Poisson’s ratio (NPR) behaviour which enable them to exhibit exceptional unique characteristics compared to conventional materials, such as high energy absorption, high shear modulus, and better bonding characteristics. In this research, additively manufactures auxetic meshes are embedded in the concrete blocks to increase their earthquake resistance which is being investigated through lab testing and computer simulations.

Project Details:

Duration: June 2023-Ongoing

Research Methods:

  • 3D printing of shock absorbing auxetics
  • Data collection and analysing using DIC technique
  • Finite Element Simulations
Team:

QUT :

  • Dineth Edmund
  • Dr Mohammad Asad
  • Dr Tatheer Zahra
  • Prof Cheng Yan