Portfolio Thomas Bernard

1

Preparation of cement paste scale sample for the development of the test methods.

Sample preparation

Cement paste prism of 150x200x15mm³

2

The objective of curing is to ensure a complete, reproducible hydration of the microstructure.

Curing solution

Curing in a low amount of distilled water

Comparison of curing methods for bulk electrical conductivity testing of cement pastes

Curing duration

Adapted to each system to reach microstructure stabilisation

Predicting the microstructure stabilization time from electrical resistivity measurements

3

The exposure must closely resemble real-life conditions while maintaining a simple protocol.

Exposure solution

Exposure in NaCl solution without renewing

4

The objective is to develop a method that can rapidly and simply measure the chloride profile.

Chloride profile measurement

Method using VP-SEM EDS at 0.1Pa

Simplified chloride ingress quantification using SEM-EDS and the square root law in cement pastes

5

The objective is to develop an alternative method for characterizing durability that does not rely on the diffusion coefficient.

Profile analysys

The square root law of the 0.3% wt. concentration

Square-Root Law Prediction of Chloride Penetration Rates in Stabilized Cement Pastes