OasisLMS

This is a recorded webinar from April 5, 2016.

Concrete, the most ubiquitous material, is a nano-structured, multi-phase, composite material that ages over time. It is composed of an amorphous phase, nanometer to micrometer size crystals, bound water and wide range of porosity. The properties of concrete exist in, and the degradation mechanisms occur across, multiple length scales (nano to micro to macro) where the properties of each scale derive from those of the next smaller scale. The amorphous phase, calcium-silicate-hydrate (C–S–H) is the “glue” that holds concrete together and is itself a nanomaterial. Viewed from the bottom-up, at the nanoscale concrete is a composite of molecular assemblages, surfaces (aggregates, fibers), and chemical bonds that interact through local chemical reactions, intermolecular forces, and intraphase diffusion. There is strong evidence that the processes occurring at the nanoscale ultimately affect the engineering properties and performance of the bulk material.

Nano-engineering employs the manipulation of the structure at the nanometer scale to develop a new generation of tailored, multifunctional, cementitious composites with superior mechanical performance and durability potentially having a range of novel properties such as: low electrical resistivity, self-sensing capabilities, self-cleaning, self-healing, high ductility, and self-control of cracks. Concrete can be nano-engineered by the incorporation of nano-sized building blocks or objects (e.g., nanoparticles and nanotubes) to

1. Recognize the opportunities with new nano-engineered concrete.2. Identify appropriate production methods and suitable applications for concrete with nanoparticles / nanofibers.3. Compare the performance of nanoparticles /nanofibers in concrete.4. Analyze the assumptions and common misconceptions related to nanotechnology of concrete.5. Recognize the environmental issues related to application of nanomaterials in concrete.

View the recorded webinar. Complete 10-question quiz with a score of 80% or higher to receive a certificate for 0.1 CEU (1.0 PDH).
Continuing Education Credit: 0.1 CEU (1.0 PDH)
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