Early Age Acoustic Emission Behaviour of Concrete Hydration

Scriptie/Masterproef: Master's Thesis

Samenvatting

The long term mechanical properties of cement-based materials are highly dependent on the mix composition and the hydration process at the early age. A quick but robust control of concrete before it becomes a permanent part of the structure is essential to ensure its long term mechanical properties. The objective of the thesis is to use the acoustic emission technique (AE) to monitor acoustic activity during the hydration process (0-5 days) as well as during the compression test at 28 days. Correlations are investigated to assess the possibility of predicting the concrete's compressive strength from the AE activity at an age much earlier than the typical compression test. In order to reach this goal, the influence of two parameters is examined: water-to-cement ratio (w/c) and aggregate-to-cement ratio (a/c). The results show that AE technique reliably characterises the early age hydration process as well as the emissions during the compression testing. Correlations are also found between parameters from the early age and others from the compression testing.
Datum prijs2015
Originele taalEnglish
Prijsuitreikende instantie
  • VUB - MEMC
BegeleiderDimitrios Angelis (Promotor) & Danny Van Hemelrijck (Co-promotor)

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