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Concrete Testing

Alkali-Aggregate Reaction

For alkali aggregate reaction to occur, it is necessary to have a source of moisture, a reactive aggregate and a source of alkalis. Many of the aggregates in use in the UK are potentially reactive with alkalis in cement paste...

Assessing Condition

Concrete undergoes long-term chemical, and micro-structural changes and these processes begin as soon as the concrete is placed. Some aspects of these processes may be beneficial such as long-term curing in a damp environment whilst others are damaging...

Chemical Attack

chemical attack A very wide range of chemical compounds that are used in industry are potentially deleterious to concrete and Geomaterials has extensive experience in the application of petrographic techniques and electron microscopy to investigate mechanisms of deterioration...

Delayed Ettringite Formation (DEF)

Delayed Ettringite Formation (DEF) Pre-cast concrete cured at temperatures sufficient to destroy ettringite and mass concrete where the volumes of concrete are sufficient for high temperatures to be reached during curing can be susceptible to damage as a result of delayed ettringite formation...