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SUMMARY:Production of microcapsules using microfluidics for self-healing i
 n construction materials. - L.R.D. Souza\, CUED
DTSTART:20161117T160000Z
DTEND:20161117T164500Z
UID:TALK67714@talks.cam.ac.uk
CONTACT:Magdalena Charytoniuk
DESCRIPTION:The generation of cracks in cementitious materials can lead to
  the shortening of a structures service life whilst requiring costly inspe
 ction\, repair and maintenance. Although all cementitious materials posses
 s some inherent autogenous self-healing capability\, the addition of engin
 eered materials for autonomic self-healing has been proposed. \nHere\, mic
 rocapsules can be added into the cementitious mixture and disperse through
 out the hardened material.  Upon crack formation\, microcapsules are mecha
 nically ruptured and subsequently release their encapsulated healing agent
  into the crack volume.\n\nIn this talk\, I will discuss the development\,
  manufacture and optimisation of microcapsules for self-healing cementitio
 us materials using microfluidics. This involves the establishment of a pro
 duction protocol and the study of the materials to be used as shell and as
  healing agent. Features of the design of these microcapsules\, their addi
 tion into the cementitious matrix and their physical triggering will be co
 nsidered. Chemical and mechanical properties of the selected acrylate shel
 l were finely tuned to propose an optimum microcapsule for this given appl
 ication.
LOCATION: Cambridge University Engineering Department\, JDB Seminar Room
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